Hawaiian Volcano Observatory

1963 Quarterly Administrative reports

Introductory Note By Thomas L. Wright and Jennifer S. Nakata

Compiled By Jennifer S. Nakata

Summary 29

January, February, and March 1963

By Robert Y. Koyanagi, Arnold T. Okamura,

 Harold L. Krivoy, and Akira Yamamoto

Summary 30

April, May, and June 1963

By Harold L. Krivoy, Willie T. Kinoshita,

Arnold T. Okamura, and Robert Y. Koyanagi

Summary 31

July, August, and September 1963

By Robert Y. Koyanagi, Arnold T. Okamura,

Willie T. Kinoshita, James G. Moore, and Howard A. Powers

Summary 32

October, November, and December 1963

By Arnold T. Okamura, Robert Y. Koyanagi, Willie T. Kinoshita, 

James G. Moore, Dallas L. Peck, and Howard A. Powers

Open-File Report 2007-1323

U.S. Department of the Interior

U.S. Geological Survey
U.S. Department of the Interior

DIRK KEMPTHORNE, Secretary

U.S. Geological Survey

Mark D. Myers, Director

U.S. Geological Survey, Reston, Virginia 2007

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INTRODUCTORY NOTE

The Hawaiian Volcano Observatory Summaries have been published in the current format since 1956. The Quarterly 

Summaries (1956 through 1973) and the Annual Summaries (1974 through 1985) were originally published as Administrative Reports. These reports have been compiled and published as U.S. Geological Survey Open-File Reports. 

The quarterly reports have been combined and published as one annual summary. All the summaries from 1956 to 

the present are now available as .pdf files at http://www.usgs.gov/pubprod.

The earthquake summary data are presented as a listing of origin time, depth, magnitude, and other location parameters. Network instrumentation, field station sites, and location algorithms are described. Tilt and other deformation 

data are included until Summary 77, January to December 1977. From 1978, the seismic and deformation data are 

published separately, due to differing schedules of data reduction. 

There are eight quarters—from the fourth quarter of 1959 to the third quarter of 1961—that were never published. 

Two of these (4th quarter 1959, 1st quarter 1960) have now been published, using handwritten notes of Jerry Eaton 

(HVO seismologist at the time) and his colleagues. The seismic records for the remaining six summaries went back to 

California in 1961 with Jerry Eaton. Other responsibilities intervened, and the seismic summaries were never prepared.

Chronology

The following Kïlauea eruption chronology covers the two recent reports and the six missing quarters:

Location Beginning Date Ending Date Comment

Kïlauea Iki crater (Kïlauea’s summit) 11/14/1959 12/20/1959 19 eruptive episodes

Kapoho (lower east rift zone) 1/13/1960 2/18/1960 4 eruption stages

Halemaumau (Kïlauea’s summit) 2/24/1961 2/24/1961 Intermittent activity during 

uninterrupted inflation following the 1960 eruption

Halemaumau (Kïlauea’s summit) 3/22/1961 3/25/1961 Same as above.

Halemaumau (Kïlauea’s summit) 7/10/1961 7/17/1961 Same as above.

Heiheiahulu (middle east rift zone) 9/22/1961 9/25/1961 First historical east rift eruption at this location

The 1959-1960 eruptions were among two of the most spectacular Kïlauea eruptions. The HVO staff was kept busy 

with acquisition of unusually high quantities of instrumental data and observations of the two sequences, which 

were separated by less than one month. Even with a year’s interval before the beginning of the summit-east rift sequence in 1961, the staff never caught up, and the seismic records were set aside for later study. 

A total of 1,672 earthquakes—1,106 for 1960 and 566 for 1961—are part of HVO’s cataloged database. The annual 

listings have been appended to the 1st Quarter Report of 1960 and to the 4th Quarter Report for 1961. The number of 

earthquakes is probably low, biased toward the larger magnitudes. The entire HVO catalog, including 1960 and 1961, 

is accessible from the ANSS CATALOG SEARCH site at http://www.ncedc.org/anss/catalog-search.

 Thomas L. Wright and Jennifer S. Nakata 
,

,

UNITED STATES

DEPARTMENT OF THE INTERIOR

GEOLOGICAL SURVEY

HAWAIIAN VOLCANO OBSERVATORY

SUM:MA.RY 29

January, February, and March, 1963

By

Robert Y. Koyanagi) Arnold T. Okamura,

Harold L. Krivoy, and Akira Yamamoto

Issued September 1964

Observatory Staff

Geology:

J. G. Moore (Scientist-in-Charge)

C. K. Wentworth

Geophysics:

G. Kojima

R. Y. Koyanagi

H. L. Krivoy

A. T. Okamura

A. S~ Ryall

Japan-U.S. Cooperative Program

E. T. Endo

Geochemistry:

R. T. Okamura

Support:

J. C. Forbes

W. H. Francis

B. J. Loucks

N. Sherrill

A. Yamamoto
1

Contents

Page

Chronological summary----------------------------------_____________ 1

Tilting of the ground around Kilauea caldera------------------------ 4

Seismic summary--------------------------------------------- ----- 8

Persons or agencies reporting felt earthquakes during the quarter--- 36

Illustrations

Figure 1. Map of the island of Hawaii showing seismograph stations

and localities mentioned in the text------------------- 3

2. Tilting of the ground around Kilauea caldera------------- 7

Tables

Table 1. Tilt coordinates at Uwekahuna vault---------------------- 5

2. Tilt coordinates and changes at bases around Kilauea

caldera------------------------------------------------ 6

3. Numbers of earthquakes and minutes of tremor recorded

on seismographs around Kilauea caldera----------------- 9

4. Local earthquakes-----------------------------------~---- 14

5. Distant earthquakes-------------------------------------- 21

6. u.s. Geological Survey seismograph stations in Hawaii---- 33
Chronological summary

Following its small, sharp subsidence during the December 1962

Aloi eruption, the summit region of Kilauea promptly resumed the

cycle of swelling that began in the sunnneI',of 1960. A moderate rate

of inflation during the first quarter of 1963 is indicated by the

average rate of outward tilting at the inner ring of tilt bases

(Uwe, 'I'M, Kea, and Kam), which was 11 microradians per month between

December 18, 1962, and March 18, 1963. As was true throughout 1962,

tilting at Kamokukolau was more rapid than at any other base during this'

interval.

The average daily count of shallow Kilauea' caldera earthquakes

diminished from 113 during the first half of Janu~ry, to 62 during

the second half, and to 50 during the first half of February. A

moderate resurgence of these earthquakes during the second half of

February sent the average daily count to 138. The level of this

activity remained moderately high throughout March, with an average of

92 per day~

The frequency of earthquakes from the southwest rift zone of

Kilauea and the nearby Kaoiki fault system rose from an average of 6

per d~ during January to 15 per day during February and March.

The number of earthquakes from the upper part of the east rift

zone of Kilauea (near Alai crater) also increased during the quarter,

from a -total of 20 in January, to 49 in February, and to 92 in March.

These quakes were particularly frequent late in March, when 83 occurred

between the 19th and 27th 0

Deep tremor was' quite prominent during the quarter with totals of

82 minutes during January, 75 minutes during February, and 119 minutes

during March.

Excluding January 8 and 9, the frequency of earthquakes from the

source about 30 kIn beneath Ha1emaumau was about 5 per day during the

entire quarter. A flurry of activity from this source on January 8

and 9, however, produced 154 earthquakes. Four of these were felt

(table 4, p. 14 and 15).

The first of these earthquakes--which occurred on January 8,

at 09h39m44. 98 , magnitude 4.3, was the largest earthquake in Hawaii

during January and was felt -throughout Hawaii and on Maui and Oahu.

The lower part of Kilauea's east rift zone near Pahoa was the

source of occasional earthquakes throughout the quarter and of a

mild swarm of 55 earthquakes during the first week in March. Five

earthquakes from this region were felt in Pahoa (table 4, p. 16) 17) and 18).

The largest earthquake in the Hawaiian region during February was

not felt. It originated 83 kIn west of Keahole Point at 09hOsm on the

17th and had a magnitude of 4.1.
During March, 6 earthquakes in the Hawaiian Islands had. magnitudes

of 3.5 or greater (t~ble 4, p. 18 and 19).

The largest earthquake in March, with a magnitude of 4.5, originated

14 km southeast of Waikii at a depth of about 13 km at 22h3~ on the 24th.

It was felt over all of the island of Hawaii and on Maui.

A very interesting earthquake was felt throughout Maui at 07hl~

on March 25. It had. a magnitude of 3.9 and originated 35 km beneath

Haleakala National Park headquarters. There were neither foreshocks

nor aftershocks~

other earthquakes felt during the quarter are listed in table 4.

2
EXPLANATION

.. 5.1''''00''''' 5to"oft

• To... 01 loeonl,

-----+------- 10·

'<..., ....

10 ,. ....

-~-~

Co"'our 1"'.'"11' '.000 t••t

0'1".. It N' ...

' 11,., UI 1 ..,

'-

t..-..L-::'

------+-------I.·

Figure l.--Map of the island of Hawaii showing seismograph stations

operated by the Geological Survey and localities mentioned in

the text. Epicenters of local ,earthqtmkes are given in terms

of geographic coordinates, which are indicated at the edges of

the map.

3
Tilting of the ground around Kilauea caldera.-.-Tilting of the

ground around the summit of Kilaue~ is monitored daily by a short~base

water-tube tiltmeter in Uwekahuna Vault (table 1), and at irregular

intervals ~.t is measured on a regional scale by means of a network of

field. tilt bases and a portable water...tube tiltmeter (table 2) 0 The

attitude of the grotmd surface at each tilt base is reported in terms

of north-south and east-west tilt coordinates. Both coordinates at

each station were arbitrarily set equal to 500 when measurements at

that station were begun~ Increasing tilt coordinates correspond to

northward anCi eastward tilting of the earth's surface, i. eo, to a

relative subsidence toward the north and east 0 A one....unit change

in coordinate cooresponds to a tilting of 1 microradian (1 :mm. per kIn)

in the direction indicated 0

4
Table l.--Tilt coordinates Uwekahuna Vault, January,

February, and March, 1963

vDate N-S E-W Date N-S E-W

Jan. 6 4·60 492 Mar~ 3 470 486

13 465 492 10 476 482

20 467 490 17 485 482

27 467 490 24 488 482

Feb. 3 467 . 490 31 489 483

10 468 491

17 470 487

24 469 488

5
Table 2.--Tilt coordinates and changes at bases around Kilauea caldera,

1st Quarter, 1963 (see fig. 2)

Rate (10-6 rad/ma)

Tilt base Date Tilt coordinates and direction of 

(location) (1963 ) tilting since 

N-S last reading 

,

Uwekahuna Mar. 20 471.2 481.2 11.6 N. 28.5° 

N., 155°17.4' w.)

Tree Molds Mar. 19 44807 511.0 4.0 N. 6.90 w

(19°26 3 'N., 155°17.3' w. )

Sand Spit Mar. 21 938.5 7Cf7 G 5 13-9 N. 6.00 E

(19°24.1' N., 1550 16 .8 f W.)

Kalihipaa Mar. 18 56805 428.3 2 .. 6 Sqt 33.0° E

(19°21.4' N., We)

Keamoku Mar. 18 49405 577.6 N. 54$10 W

(19°25.1' N., 155°19·0' w )

Ahua Kamokukolau Mar. 19 599·3 539·3 l8c5 70 E

(19 0 22&7' N., 155°16.6' w.)

Kipuka Nene Mar. 15 507·1 496·7 1.1 s. 5° E8 

(19°19.4'

Hilina Pali Mar. 13 509.6 497.4 0.6 So 27.6° E

(19°18.2' N., We)

Kapapala Ranch Mar. 14 49704 505.0 0.1 Se 27°' Ee 

(19°20.5' N., 155°23.8' w.)
(

\

'""I

I

Cl

o

o

5 KM

,J" ,pr.: r'

t---I

T1LTtNG RATE 2.~ X 10-6 RADIANS I MONTH

DEC 12, 1962 - MAR

"

18, 1963

Kea

2000

o

o

/' 0° j

ty-O ~.-

,,----

I

,/

0° ~o Q

Kap

•

Figure 2.--Tilting of the ground around Kilauea caldera. The vector

depicting tilting at a given base points in the direction of

maximum relative subsidence and has a length proportional to the

rate of tilting during the measurement interval.

7
Seismic summary.--Events recorded by the U.S. Geological Survey

seismograph network in Hawaii fall into two categories: local earthquakes

and tremor originating in the region of the Hawaiian Islands, usually

within 100 kIn of at least one seismograph, and distant earthquakes

orig~nating more than 3,000 km from Hawaii. As an index of seismic activity

at Hawaiian volcanoes, daily counts of earthquakes and minutes of tremor

recorded by seismograp'hsin Hawaii are listed in table 3. The earthquakes

are separated into groups on the basis of region of origin as determined

primarily by analysis of records obtained daily at the Observatory

(U, M, A, D, N). Earthquakes of magnitude 205 or greater are generally

sufficiently well recorded to ~e located with greater precision; they are

listed individually in table 4. Data on identifiable phases from distant

earthquakes are listed in table 5.

Locations of the seismograph stations are shown on figure 1.

Essential data on the stations are given in table 6..

8
Table of earthquakes and minutes of tremor recorded on

. seismographs UJ MJ AJ DJ and N around Kilauea caldera

Tremor is separated into three categories: deep, intermediate, and shallow, on the basi

amplitudes on seismographs in the Unless otherwise stated, tremor is 

be associated with movement of magma within the central complex of Kilauea.

Earthquake categories are: Halemaumau rock slides, which are detected by the character

they produce on the North Pit seismograph; shallow earthquakes in the Kilauea caldera 

shallow earthquakes along the SW. rift zone of Kilauea and the adjacent portion of' th

fault system; earthquakes along the eastern half of Kilauea's east rift zone (rrom th

seismograph); earthquakes from a source about 30 kIn beneath Halemaumau; earthquakes fr

upper east rift zone and the adjacent fault on Kilauea's south flank, and ear

from other regions: Kana, Mauna Kea, etc.

Tremor

Date (in Earthquakes

(1963 ) .\

I

Hale- SW. rift Eastern Hale- KalaInter- maumau Kilauea and East maumau pana 

Deep mediate Shallow slides Caldera Kaoiki rift 30 kIn Trail

Jan. 1 .._.. ---.._-- -----_.- ----"..- 105 9 -... 2 3 1 

2 Zl .. __.. _w.- .. _ .... ec ... __ 110 12 _ .. tIID ___ 1 1 -

3 ..._-.... ..------ -_....--- _...--..- 115 3 ------ 3 ...._--- -_

4 ---..- - ..-..-..... ___ -.c ____ --.....-- 110 3 ----.._- 2 ----...., 1 

5 _.._-- ..------- -------- .._----- 110 4 ------- 5 .._---- 1 

6 3 ..----.. .., ...._--- ..-..-.... 127 7 ...._--- 4 ------- --

7 _____

.-r-

.._----..- 7 ----.... 75 3 .._-.., 6 ..----...-

8 -..,-_.-> ., ... _--_..- .. ..-.. .. ...- 82 6 ..._- 112 2 1 

9 _... ..- .... _---..- .._...-_..- 1 160 4 .. .... 42 1 1 

10 --_..- eD .. ,.. .. ____ -_..--- 115 5 __ -.:t_ 5 ------- .._

11 24 8) _______ ..---_..... ............- 80 ·5 1 2 1 1 

12 _..--- -.. .. ..------ -_.._-- 110 8 --_ ..._..- ·5 1 1 

13 ....--- --------- _..---_.. -----.. 107 5 _.. .. 2 ...._-- 1 

14 _.._-..-- _...---.... ......--- 170 5 .. ..- 4 10 -.tIIII
Table 3 e --Nwnbers of earthquakes and minutes of tremor recorded on

seismographs U, M, A, D, and N around Kilauea caldera-=-Continued

Tremor

(in minutes) Earthquakes

Date

(1963 )

Hale- SW. rift Eastern Hale- KalaInter- maumau Kilauea and East maumau pana 

Deep mediate Shallow slides caldera Kaoiki rift 30 kIn Trail

Jan. 15 _ ..__ .m -..,.._--.. .._- 1 89 5 _tm __ .... 2 ------ -

16 Instruments turned off--extreme weather

17 --_...- .. .._- ..-- ----_...... 66 5 ....,..,--- 2 -------

18 ----- ..--- .e ____ .. -------- 50 5 --_...... 4 --_..._- 1 

.- 1 

19 --_.-- ..-----.., _.-_....- .. 40 6 .. 5 -----_.. -.c. _

20 ----- 4 ..--- -...--_....- 61 6 -------.. 5 ----_... 2 

21 ----- 1 .._- ------- 50 5 .. 4 1 

22 10 ------- .....- .m __ .. 75 14 ------ 2 _ ... .-m ___

23 ---..- -.. -.:. __ ... 3 66 7 1 6 -:11_---- -=

24 -._--- .. _ar>_ ....... 1 52 7 ------- 3 ..

25 28 40 ... -=a...,wm .. '" 3 60 4 .. 1

26 ..---- ..- ...-..- 2 90 10 .. 5 --

Z7 -----...- _-.t ___ .. __ 7 100 13 .. -=- 10 ---_.. ... _

28 .. ..- 1 47 9 4 ------- 1 

29 ...._-- ----....- --_ ..--- 2 49 6 ------ 3 ... ____ -..-=a ..._

30 ... .-..__ ____ e.t __ ..-.....-..- 45 7 ------ 7 1. 1 

31 Poor records--extreme weather

Feb. 1 .. .._-.. ------- 30 15 __ 3 ------ --

2 .._....- ----.-.. --_.._--- 58 17 -----.. 6 3 

3 ----- ..__ ... .. .a -._-----... 69 27 - ___ 4lID __ 5 1 2 

4 c=- .... .. _..--... _-.., ___ -.D" ________ tIID 26 31 .. c.I 6 .._--.... 1 

5 _ .... IE)_ __ .. _ .. e- _ 40 23 __ -=- __ 8110 3 _.-::t-m_-=t _ 1 

1 

6 ------- 4 __ ..,_ __ ., 28 18 10 1 5 

7 "''''__ 1 35 25 9 13

8 --_..., ... _..c., ... CG __ -=-_ I-t---_..- 55 22 1I8:I __ 11 __ 2 

9 .._ 1 60 36 a»e- ___ ca., 7 5 
Table of earthquakes and minutes of tremor recorded on

seismographs U, M, A, D, and N around Kilauea caldera--Continued

Tremor

(in minutes) Earthquakes

Date

(1963)

Hale- rift Eastern Hale- KalaInter- maumau Kilauea and East maumau pana 

Deep mediate Shallow slides caldera Kaoiki rift 30 km Trail

Feb. 10 .. .... ------- ----_.. 50 18 -_.... 4 ..- ...._-

11 4 ..------ .. -:t ______ ------ 53 13 _.c ____ 2 ---....- 3 

12 ___ ... .-P ________ .a _.. ---_..- 74 7 .. --..--- ------ 1 

13 ----- ----._-- ..... _-.,..- ..-------- 34 7 ------ 2 .. _--=--- 1 

14 ---_.. _ .._.a .... _ ..-------- ------- 40 6 -..---- 2 -

15 29 .._- ------- 1 80 10 1 3 ------ -

16 29 _..------- .. -------- 240 11 --..._-- 3 1 1 

17 ----- --_..-...- ------- ..--=-_-. 350 10 ------ 3 -----.. 1 

18 -..._-- ------_..- __ .m..- __ -" ----_.. 300 12 1 13 __ .. .m. __ 4 

19 _........ ....

4ID

_____

------ 60 15 ------ 12 _.. 1 

20 13 ... ____ ..,,_.:a ..-_.. ..- ------.. 100 16 7 1 1 

21 ----.. ------- 100 8 ------ 3 .._----- --

22 -..- ..... -.------ .. - .. 45 5 5 ___ .c. __ --

23 ----- .. 3 --... 70 15 --_.._- 7 1 --

24 ..._--- ----..,--- _....--- 120 20 ------ 5 ---.,---

25 ,-.---- 4 ------- ------ 115 14 ------- 1 1 1 

26 ----- -_.. .. _.._---- ------- 150 15 1 2 ___ aIIE' ___ --

'27 _..._...- -=- ..----- .. - ..- .....- 80 15 .._---- 3 18 1 

28 __ ....---_.. _.a ______ _.._--- 65 17 1 1 7 1 
Table of of recorded on

seismo.graphs Uj & .D, and N around Kilauea caldera==Contin

--...:

Tremor

(in minutes) Earthquakes

Date

(1963 ) t

Hale- SW, rift Eastern KalaInter- maumau Kilauea and East maumau pana 

Deep. mediate Shallow, slides caldera Kaoiki rift 30 kIn Trail

1 ..- ___ _ ------ 50 12 --'_ .... __ CIIIIt" 2 c=lC>l= ___ 

2 .......... _.-.a .. .. ------ 70 17 2 2 QGco __ - 

3 ..... .._.. '-:t:Ila".a-._ ------ 65 11 9 .... .. Clc::8e:;, ... __ 

4 _..........- ___ a:a .. _ ---.. 166 12 8 3 1 

5 _....--- -----......- 100 13 12 3

_c:a ____

6 ... " __ -_..---- 80 14 21 1 e::tc:::lc:a ___ 

7 .... .. c.- __ _..... .. ------ 120 20 3 2 .-E:a .. __ 

8 .. _C8D ..... ___ ..-,-.em .. ...- _-e-.. _ .. _ 100 7 ---_.... e:-aa ___ __ 

9 .... __ ... _tI& 3 ----.... 70 16 ---........ 2 1'. ... __ ... _ 

10 25 .. ------- 60 15 4 6 .. 

11 ... -,...--...- 2 ...--- 80 30 _e.-..-_,-_ 2 3 

12 -... ...------ ------ ..- 80 22 1 ------- .... .-__ .. 

13 40 ------ -- ...._-- .. 90 Zl .. _-= 3

c.r

_______

14 _ ... .... aa: ________ .. a. ____ ..- 75 6 RI' ....__ 9 __ c:e_":'- 

15 "8';l!=t::8_ ..___ .... ..,- _... 100 17 1 3 1 

16 15 ... _.. _..... :.t_ ... 90 20 1 7 1 

17 ..._s::»_..,. --=------- 1 75 20 ..- 1 ___ 

18 59 .... "ce ... .. W)ar. ... -. 79 32 6 1 

19 ___ .... _ -.c..,\lK.c;c: ...... 76 18 c:::J cr:.- CZ't =- #".ac 5 5 

20 .. c::a_e-DCIE'1-"C:::W 96 15 C3t CZt ae c:- 12 40 

21 __ «:" cc e.-, __ CillDc:::Il--'''", _CG .. 90 15 CS'c=c:ae=_-=- 10 1 

22 .. -= 8111C ...... a;_C!:I 90 10 c:. e:t c= SIt c;.-= 7 3 
Table of earthquakes and minutes of tremor recorded on

seismographs U, M1 A, D, and N around Kilauea calderaG:l-Continu

Tremor

(in minutes) Earthquakes

Date

(1963)

HaJ-e- sw. rift Eastern Hale- KalaInterc:> maumau Kilauea and East pana 

Deep mediate Shallow slides caldera Kaoiki rift 30 km Trail

Mar. 23 C::Oc:c_c:la:o .... ""'a.JaDClCCD_ 80 16 ____ e:::tc:::> 10 c::::r CDi DD c=- CD c::I

24 3· ... COCID_"'cmCD c:aCD ..... CD GIl "'.K:I 115 11 .. a. 6 10 

25 .. c= ..... CDGI'cgC'CCics:::aca a:;J _.,c..ca2c-. .. _tlDc:Da::Ic::. 176 28 1 9 16

26 _ec"'c:DCDC:::> 19 CD ... eatCD .. 120 8 2 5 c:=,;:::><D __....

zr 12 __ e::-c::aa. .. cza_ ...... 5 153 19 ...._-_.. 5 9 

28

ca

_____

_

.. a--=a .. a:::tCD

........ a=-

__ c.

__

...

_

...

_ 100 9 .. .. 4 c=tcecst_ca_ 

29 _c:::J ..... .. -=:tCD" _., .. ------- 120 8 ------- 1 1

30 .. ca-.a_caGD _c:-. __ .... _ 2 100 7 "CD __ c.C. e-asa_-=-r::.-.:t C2cm ___

31 ., .. c::.-=tc.._ "'e-Dl ... -.a.alCll .. ------- 3 3 2 4 c..CEte- ____ 
Table 40

_

....Local earthquakes recorded by seismographs of the U0 S Geological Survey,

January, February, and March, 1963

[Except for smaller earthquakes of special interest, only earthquakes with magnitudes 

greater are listedc> Origin time is Hawaiian standard 0

In the folloWing list some origin times are followed only by "KM 30" and a statement 

These are all members of a continuing family of quakes noted also in other Summarie

mean focus for this group is beneath Halemaumau at a depth of 30 kIn (19°24,,1' No, 1

Origin times of members of a second persistent sequence of earthquakes are followed b

(Kalapana Trail) 0 These earthquakes originate at very shallow depths in a remote r

the Kalapana Trail west of Kalapana, and they generally are not felt Seismograms 

earthquakes are poorly recorded and difficult to interpret; so only an approximate 

19°20' No, 155°05' Wo, can be assigned to them0

The mean focus of the magnitude 6.1 Kaoiki fault system earthquake of June 27 and its 

is 19°24' No, 155°25' W., at a depth of 3 to 8 kIno This focus has been abbreviated 

Since the flank eruption near Alai Crater (SUImllary 28) numerous earthquakes have been 

from the Aloi region and the Koae fault system southwest of Alo-i 0 These are descri

f-J "upper east riftIf earthquakes in this table]

+:-

Date Time Magni co Depth_ Epicenter 

(1963 ) tude 

h m s Lat. N. Long. W" \ Description - - -

Jan 0 2 03 41 54.4 2·5 8 19°11.2' 155°3709 t 15 kIn NNW of NaalehuIl::>C02....--

2 08 03 0004 2·9 3 19°13.8' 155°35.2' 19 kIn north of Naalehuc.--

5 17 33 57.2 202 --- .. a._ .. _ ..-_ _*=' __

5 22 27 59.4 2,,2 3 19°4808' 155°20.2' 28 kIn WNW of

8 ar 56 205 ectCD_ __ C'!IlIc=t ....... c:=-..-ac:4-c::::. KM

8 09 39 4409 _coo a::> CO-=-a.cao ... c:aCIDCi:Jc:.;:, EM F

8 09 46 2503 2.4 CD r;-. .. ... lIIQ __= .... KM ....

8 09 48 44eO 202 CD_ ..... .. c.-c.- ....__ e;, ., .. t:.t .. _ .... ce::tc::::a KM

8 09 49 2501 2·3 .... ..._...... .._- ca.c .. ___ KM

8 CY9 50 49.2 2.4 ...... __ C::OCl»aa_ ... .. KM ..

8 10 02 201 -..... .. _e::t KM ..-
Table 4o ....-Local earthquakes recorded by seismographs of the U.S. Geological Survey,

" January, FebruaryI and March, 1963 --Continued

Date Time Magni- Depth Epicenter 

tude (kIn) 

(1963 ) h', r m s Lat. N. Long. w. Description - - -

8 08 :2.4

i

Jan. 10 37·2 c:::a ___ --------- -..... ..- KM .. 

8 10 57 14.8 2.8 _c::a .... _ --------- ________ KM _ ..

I

8 11 14 2·3 ---- _......---.. _.._---_...._- KM .._

8 12 gO 40.1 300 ___CIt ______ c:::. .... ------...._-- KM __ 8 15 41 0602 4.2 c::a .. Ci» ...-C::»,,«DCD ____ ..__ a..-c:aG8J KM Fe

8 15 45 304 __ e-.- ____."c:a ....=- _ _CIDlID_:oaCDc:::.ca_G11 KM 

8 18 06 2309 2,,3 s=t __ .-:a c..aDc:m .. czt .... _ .... c;;at::a .. _ .. _ .......... KM

__

8 18 18 23<99 c::aGae::::tCli:l cg ___C:lt_ .. ... _ ......... __ KM C3., 8 19 21 06ct9 2.1 .-CSc:::8CZ'tCDI!"::tt::3 ..Clc::a KM c=:aaa 

8 20 do 5905 2·5 5 19°200_8' 155°0408' 21 kIn SW of Palloa-.... =:acgc:a..,.c:a- 

9 00 39 4800 2c2 ... • .a:ac::a .. C2 _

9 04 36 206

I

.....-....

cac:a

__

c=- ..... KM _=-C

9 04 36 c=a .. gar... _c:-._ ........... KM Fe

9 05 19 2909 208 C=-_""4ID a.a- ... o:a ... KM .. _G

9 05 24 <3 19°21.5 i 28 kIn SE of Kealakekua. ....

9 06 45 203" ",.o;nG;)E:I ... .. C!S' KM __ __ ......

9 08 57 45.4 2:>4 C81Ct _____ ew_c:ac:::» KM 

9 09 0809 3Ql C3t::1c::ac:::a __ .... .. a- c::2e:t ... KM Fe

...J

9 10 54 3·2 e»c-.. ..,ca .... c;:;II __ .. c:.c:crC3c::::a .. KM

..

_

10 04 05 2Q4 8 19°57·7 t 155°21..,5' 13 kIn WSW of Laupalloehoe ....

10 Cf7 37 28'.t4 C8CDa;ac::::l CSCD ......... ,...,maCllJ .._aaCO .. ClC3c::» ..el:'CDC>.,._c::Ic= .... _·___ ...C::J_e:;, ...___ .. 

10 15 31 3500 201 e;, ....=- ... caca'-c::z:;IiaDe- .. e::tc;;::ll c=- ____.. a:.caC:OCD KM 

11 01 i:O 2:37 caca=ac::a __ c::a_

....

_____

&2

___

KM ,1"- --

11 14 06 44.3 "'CD .. _..____cac.c:ac::a KM --

12 01 49 "5803 2.4 8 18°56.0' 155°19.8' 32 kIn SE of Naalehu------ --

12 23 44 0194 3·5 c::IGDCOll_ __"'CD __ ---------- --

13 20 54 55.0 3·1 8 19°32.2' 156°12.3' 32 kIn l-.'NW of Kealakekua- cza --
Table 4.--Local earth uakes recorded by seismogra hs of the U.S Geological Survey

January,February, and March, 19 3--Continued

Date Time" Depth Epicenter 

(1963) tude (km) 

h"

m s Lat. No Long. w. Description - -

-

Jane> 14 13 50 21.0 205

3 19°21.9' 155°08.2' 14 km east of Ahua seismome

15 03 21 20.0 302 __ .. .. KM

18 05 58 50.2 2.2 ...._ell _"_ .. ...,.... KM 

18 10 51 06 If 0 2·3

5 19°1105' 155°3705' 15 km NNW of Naalehu-------

18 20 59 5700 207 13 20°04.9' 155°48.9' 12 km WNW of Kamuela 

seismograph 0 20 10 26 35·0 3·1 13 20°13' 156°15' 40 km WSW of Upolu .. 20 17 42 32.8 2.2 KJ'caca_

_

......_---- C8_ ..___ KM 

23 06 12 41.0 2.8

8 19°27.0' 154°52.8' 1'\' 10 km SE of 

26 22 12 0404 2.2

3 19°24.8' 155°1507' SE edge of Kilauea Caldera-

26 23 14 01.8 203

3 19°2408' 155°15·7' SE edge of Kilauea Caldera-

26 23 29 5903 2Q2 _aac::a_ CID .... e-a.C*ai .._c:I C3 ____ a.c. .. c.a 

27 13 58 05.5 3.4 c:a ____ .... KM 

28 02 08 18.7 205

8 155°3460' 14 km NNE of 

29 12 53 1900 2Ct3 ----- ... " c::::a_c-. __ e:::::t_-.a __ KM 

29 14 08 02.9 3·2 "c:::I.-J"

_

..... _-_ .. 

30 23 08 10.8 202

5 19°1303' 155°42.6' 23 km NW of 

31 14 25 05.6 208

8 19°1805' 155°0905' 13 km SE of Ahua seismomete

Feb 0 2 03 24 23-3 2.1

8 19°1407' 155°02.0' 14 km SSW of 

4 12 48 44.0 201 13 20°19' 1550 30' 34 km NE of Kamuela 

seismograph 0"

5 13 36 4788 2·3 -..,.-- c.-_ .. aac:.'CDOJD«=.- __ ""-=t" 

5 20 '39 44.3 207 13 19°57.1 ' 155"°44.8 ' 10 km SW of Kamuela 

seismograph 0

5 22 47" 25·5 202

5 19°13.9' 1.55°38.2' 19 km NNW of 

7 19 05 10<)9 2·3 ----- _CD-=:J ........ _ ..__ -."cm-CS_c:;:lIc::. 

9 94 25 53·5 2.5 8" 19°35.7' 156°0008' 13 km NW of 

9 10 19 53.4 2.0 ---- ..__ .. _w:;,_ .. _"__ c:l __ 

9 04 24 5300

8 19°35.7' 156°00.8' 13 km NW of 

10 18 49 48.5 2.7 --=-.., .. --------

-

.. .. .,_.. 

12 02 28 2805

8 19°29.0' 155°5802'

7 km WSW of 
Table 4o--Local earthquakes by seismo a hs of the U.S. Geological Survey,

January, February, and March, 19 3--Continued

Date Time Magni- Depth Epicenter

(1963 ) tude (kIn) °h m s Lat. N. Long. w. Description - - -

Feb" 12 16 58 02·5 2.4 ..-=t ____ .. ... _ Kaoiki------------------------- 13 08 47 48.5 2·7 8 19°32.8' 155°55.7' 3 kIn NNW of Kealakekua--------

14 09 17 30·.0 3·1 8 156°12.5' 35 kIn WSW of

15 02 36 43.8 2.1 'aBC:O ..... .... - .. _--=aG;;l c-.-= .. _a=t-=t_ .... KM 30-------------------------

16 07 01 13·5 2·5 8 19°16.2' 155°04.2 1 23 kIn ESE of Ahua seismometer-

16 09 31 22.6 204 -«;11I--- c:I", _____ .aGID-==- Upper east

16 13 56 2001 2·5 30 19°29.4' 155°0905' 10 kIn SW of Mountain

17 01 32 23e7 2·5 13 18°57.3' 155°0801' 50 kIn ESE of

17 09 ()( 4405 401 13 19°43' 156°52' 83 kIn west of Keahole Point---

17 11 47 2606 2·3 5 19°30.0' 155°41.8' 25 kIn east of Kealakekua------17 23 10 3507 2·3 10 19°19.5' 155°21&2' 6 kIn SW of Uwekahuna

seismometer.

19 01 52 4303 2·3 __ .. ca _Gaca __ ca __ " ___ CEt __ ca..aS':l' KM

19 04 00 13·4 2.4 8 19°30.1' 155°46.7' 15 kIn east of

19 21 25 51.1 2.2 3 19°10.8' 155°35.0' 13 kIn north of Naa1ehu--------

21 05 41 28.2 2.8 13 19°03' 156°16' 65 kIn SW of Kealakekua=-------

22 21 24 33·5 2·3 8 19°21.9' 155°56.6' 5 kIn SW of

23 21 - 59 24.4 2·3 3 19°21.8' 155.°05.6' 40 kIn south of Hi1o-----------

24 19 24 26.5 3·1 13 21°30' 156°40' 38 kIn north of' Halawa Cape,

Mo1okai.

25 11 38 28.5 2.4 3 19°20e9' 155°47.1' 13 kIn SE of Hookena-----------

25 13 11 21·9 2.8 5 19°30.7' 155°2602' 5 kIn WNW of Maillla Loa

seismometer 0

26 01 21 42.0 2.0 8 19°2404' 154°52.2' 13 km SE of Pahoa-------------

2:7 15 44 28.5 2·9 13 20°08.4' 155Q 50.6' 18 kIn NW of Kamue1a...----------

27 21 42 1903 2.6 o:a_ ...... .. .. .._... ......... Upper east

zr 22 22 10.1 3·0 __

C!>I

_______

._-------- Upper east 28 11 03 20·3 204 8 155°3104' 5 kIn north of Pohaku1oa-------

28 11 10 20.6 204 8 190 47 .4' 155°31.4' 5 kIn north of

28 11 21 5008 201 8 190 26.8' 8 kIn SW of 
Table earth uakes recorded by seismo a; hs of the U.S.-··Geolo ical Survey,

February, and March, 19 3--Continued

Date Time Magni- Depth Epicenter

(1963 ) tude (km) m s Lat. N•. Longo W. Description - -

--

."

Mar. 1 01 48 2606 3·2 3 19°19.8' 155°45.0' 17 km SE of Hookena--------

1 02 43 00.,7 2·7 13 18°5703' 155°38.3' 5 kID NE of Ka1ae Point------

06 14 3800 

3 203 --- ____ t=t_ICI"c:a _ .. _c:a-=- ____ 

5 17 11 16.4 2.5 5 19°28.5' 154°54.9' 5 km SE of 

5 20 04 19.8 204 5 19°28ct5' 154°54.9' 5 kID SE of 

5 20 44 02·3 206 8 19°59.0' 155°24.1' 14 km SE of Honokaa--------

6 02 23 55·1 2.8 5 19°2805' 154°54.9' 5 km SE of 

6 05 46 J.4.3 2·9 5 19°2805' 154°54.9' 5 km SE of Pahoa------------

7 16 08 2.4 8 19°30.. 8' 156°04e8' 18 km west of 

8 14 25 2303 203 8 19°1709' 155°11.8' 11 km SE of Ahua seismomete

8 15 45 27 .0 2·3 8 19°1709' 155°1108' 11 km SE of Ahua seismomete

8 ·17 22 1708 2·7 8 19°53.0' 155°3108' 23 km SE of 

9 12 47 50.5 2.4 3 19°3801 9 156°0402' 21 km NW of Kealakekua-----

10 11 51 5220 203 8 19°1409' 155°04Ql' 54 km south of Hilo---------

11 10 06 25·.0 2v6 8 19°5700& 155°21.9' 15 km WSW of Laupahoehoe---

17 45 28·3 3·0 21°08' 156007 t 43 km NNE of Ha1eakala 

seismometer (Maui).

11 21 33 22.6 204 8 19°0505' 155°2109' 39 km south of 

12 22 08 05·2 2·7 3 19°53·1' 155°2208' 6 km SW of 

13 01 37 3305 300 8 19°40«11' 155°50tt4' 19 km NE of 

13 03 22 203 3 Igo51.0 a 155°23·3' 10 km SW of 

13 10 57 2609 305 5 19°2402' 155°3000' 15 km SW of Mauna Loa 

seismometer 0 

13 22 28 1809 2Q5 3 19°5100' 10 km SW of 14 00 18 35c7 303 13 19°29 i 157°14' 138 km west of Kealakekua--14 . 01 23 2600 8lDC2c=rc;:!>C3_ ... _ KM 

14 08 23 2005 300 8 20°12.7' 155°5508 v 31 km NW of 15 18 10 WoO 207 8 19°31.0' 155°0303' 11 km NW of 
Table 4.--Local recorded by seismographs of the U.S. Geological Survey,

January, February, and March, 1963--Continued

Date Time Depth Epicenter 

(1963 ) tude (kIn) 

h m s Lato No Long. w. Description - - -

\

17 23 32 5708 2·5 <3 19°2900' 155°44.6' 20 kIn ESE of Kealakekua------

1'-' 23 44 52.0 2·5 '<.3 19°29.0' 155°44.6' 20 kIn ESE of 

18 14 44 13·2 209 --- 8It_CD_a.ca-=-_ ....... KM

18 15 50 43$7 203 3 19°53.1' 155°4600' 13 kIn WNW of Waikii-----------

18 22 02 3609 2.4 8 19°49.2' 155°32.6' 8 km NNW of 

19 02 35 01·5 2.4 5 19°24.2' 155°4606' 20 kIn SE of Kea1akekua-------

19, 17 56 36.6 2·7 8 19°41.9' 156°06&2' 5 kIn SWof 

20 14 17 03·0 2e2 8 19°18.6' 155°05.5' 45 kIn south of 

20 20 42 15-7 2.6 ---., ____ .. _ KM 

20 21 15 3802 2.2 --- -=:t .. ___ .. K:II ___ ........ I:S Upper east rift---------------

21 19 57 31.4 2·3 <3 19°26.8' 155°46.0' 18 kIn SE of Kealakekua-------

22 10 59 40.5 3·8 13 19°32.6' 155°49.9' 10 kIn ENE of Kealakekua------

22 17 38 16·3 3·0 3 19°53·8' 155°16.3' 28 kIn NW of Hilo--------------

22 18 01 16.9 208 8 155°45.6' 30 kIn NE of Kealakekua-------

22 20 59 43.0 2.4 __ c::a ..__ ... __ CI 1CI1K:I.:a __ .. ., Upper east rift---------------22 21 07 56.0 2·7 --- __ .. Upper east rift---------------

22 21 09 02·3 2.6 --- _____ c:a"'GD CJCD-=-_c.l., .._e::t Upper east rift---------------

22 21 _11 2.8 8 19°48.5' 156°01.4' 35 kIn NNW of Kea1akekua------

23 04 48 13.4 3·5 13 19°53.2-' 155°20.8' 5 kIn SW of 

24 10 03 34.-5 2.9 --- .. CIIIt __ ClGc::..o _m. .. KM 

24 11 31 08.2 202 --- _ .. __ .. .. -=--=-ca .. KM 

24- 20 30 35·9 206 --- -------_... ....-_..---.. Kaoiki------------------------

24 22 31 51.8 4.5 13 19°47.0' 155°33.8' 14 kIn SE of Waikii------------

24 23 43 06·3 200 --- _.. ..- .-a=-_ca.a-. ___ KM 

25 06 41 50.2 2.5 <3 19°2082' 155°42ct3' 22 km ESE of Hookena----------25 06 57 05.6 2·7 <3 19°2807' 155°4805' 13 kIn ESE of Kealakekua-------

25 (JJ 18 35.0 3·9 35 20°47' 156°14' 3 kInNE of Haleaka1a 

seismometer (Maui) (I 
f\)

o

Table 4.--Loca1 earthquakes recorded by setsmographs of the U.S.- Geologic-al Surve

January, February, and March, 1963--Continued

Date Time Magni- '.iDepth Epicenter 

(1963 ) tude (km) 

h m s Lat. N. Long. w. Description - - -

Mar. 25 23 30 20.0 2·5 13 19°05.4' 155°25.2' 18 kIn ENE Naa1ehu-------

26 20 56 19.2 2·5 ca .. _CII ......- _ClZt _______ Kaoiki---------------------

Z7 04 55 50.6 c=a-.-=t .. _......_--- -=t_ .... _.... .. KM 30----------------------

zr 11 12 57·0 2.9 8 19°55.7' 155°32.1' 20 kIn SE of Kamue1a--------

Z7 17 24 25.9 204 8 19°21.4' 155°45.4' 16 kIn ESE of Hookena-------

28 00 26 22.9 2·3 8 155°36.8' 5 kIn SW of Mokuaweoweo Calde

28 02 37 45.2 2.1 ----- _____ .,_-=- .. -------_..- KM 

28 13 08 27.1 206 8 19°4709' 155°34.6' 8 kIn NW of Pohakuloa-------

28 19 47 02·5 2.8 _"C:=-«a ----_.._.. ___ __ '8ICI Kaoiki----------------------

29 08 50 08.8 2.1 ----- ..-.._- .._-- Upper east r1ft-------------

30 20 49 01.9 2.8 35 19°09.5' 155°30.0' 14 kIn NE of Naalehu--------

31 16 35 57 ·5 3·7 8 20°01.0' 155°52.9' 6 kIn SW of Kawaihae--------
Table 5. --Distant earthquakes

[Times are reported in Greenwich Civil Time which is 10 hours faster than

Hawaiian Standard Time. A "e tt folloWing the time of P indicates

compressional first motion; a rid" indicates dilatational first motion.

Station symbols, locations, and instrumentation are presented in table 6.

Magnitudes calculated from the Hawaii seismograms are followed by (lIVO).

Location of epicenter, origin times, and focal depths, and magnitudes

reported by other institutions are taken from "Preliminary Determination

of Epicenterslt published by the U.. S. Coast and Geodetic Survey]

Jan. I, 1963 Jan. l--Continued

M Z iP 12:26:51.6 d Pa Z Tmax 00:24:43

A Z eP 12:26:50.1 d C&GS card 1-63: D Z iP 12:26:49.8 d 23:39:05.6 N Z eP 12: 26: 5,1.2 d 56.6° N., 157 .7° Ttl. \~ Z iP 12:26:51~1 d

Na Z iP 12:26:48.0 Alaska Peninsula

h about 50 kIn Pa Z iP 12:26:52~0 c !~agnitude 6. 5 (Pas) Hi Z eP 12:26:53,.3 d 5.75 (Pal) Ka Z eP 12:26:54.5 d 6.5 (lIVO)

C&GS card 1-63: Jan" 2 12:17:38.6

6.8 0s., 155.9° E. M Z iP 15:07:35.8 c

Solomon Islands N Z eP 15:07:35-5 c

h about 165 kIn.

Jan. 1 C&GS card 4-63:

14:56:05.4

M Z eP 23:46:13.6 d 4.10

S., 132.2° E.

A Z eP 23:46:14.4 d Near south coast of western New

D Z iP 23:46:14.5 d Guinea.

N Z eP 23:46:13~9 d h about 33 kIn.

\\1P Z eP 23:46:13~9 d Jan. 2 U Z iP 23:46:13~7 d

Ha Z iP 23:46:03~4 c U FEZ eR 16:32:21

epP 23:46:191D7 C&GS card 3-63: Ka Z eP 23:46:08.6 d 15:55:47~9 Hi Z iP 23 :4·6: 11.4 d 52.9° S .. , 118.2° w~ Pa Z iP 23:46:13-5 d

Na Z iP 23 : 46: .16 .8 d South Pacific Ocean

U FEZ iP 23:46:14 d h about 33 kIn~

is 23:51:57 Jan~ 3

iSS 23:55:03 U FEZ eR 10:06:20 U PEE isS 23:52:27

eL 23:54:41 e&Gs card 3-63:

U PEN i 23:52:52 09:39:46.8

i 23:56:16 5.3 0

B., 151.5° E.

M Z TInax 00:24:45 New Britain

A Z Tmax 00:24:48 h about 74 kIn

D Z Tmax 00:24:40 l~agnitude 5 3 (Pal).

N Z Tmax 00:24:48

\\1P Z Tmax 00:24:44

U Z Tmax 00:24:45

Ha Z Tma,x 00:23:07

Ka Z Tmax 00:24:01

Hi Z Tmax 00:24:11

21
Table 5.--Distant earthquakes~-Continued

J'an. 4, 1963 Jan. 7--Continued

Jan. 7

C&GL card 1-63:

00:20:11.6

3.20 N., 127~Oo E~

Halmahera region

h about 33 km.

C&GS card 2-63:

13:16:38.0

10.0° S., 124.0° E.

Timor

h ~bout 33 km4'

C&GS card 2-63:

12:16:38.0

4.70S., 154.0° E.

Solomon Islands region

h about 69 kIn.

12:16=32.5 c

12:16:40 d

02:42:23.2 d

02:42:23.7 d

02:42:23.7 d

02:42:23.3 d

eP 03:22:47.9 c

eP

eP

eP

eP

iP

eP

z

z

Z

z

z

z

z

Na

Hi

Pa

M

A

N

WP

Jan. 9

C&GS card 9-63:

12:09:01.2

15.20S., 173.6° w.

Tonga Islands region

Felt: Apia

h about 33 kIn~

C&GS card 4-63:

02:32:39.9

13.4° N., 145.3° E.

Mariana Islands

h about 38 km.

Jan. 24

COOS card 4-63:

03:13:26.4

18.60N., 145.11-° E.

Mariana Islands

h about 192 kIn.

Jan. 15

C&GS card--Continued

Magnitude 5.5-5.8 (Pal)

6.0 (HVO).

12:33:51

12:41:46

13:29:19.1 d

13:29:18.5 d

13:29:18.1 d

iP

eP

eP

z

z

z

FEZ is

PEZ iR

u

u

M

A

D

J·an. 5

M Z iP 00:31:16.7 c

Z ipP 00:32:08.2 c

A Z eP 00:31:15.7 c

Z epP 00:32:07.3 c

D Z eP 00:31:15.6 c

Z epP 00:32:07.2 c

Jan. 5

C&GS card 7-63: 12:49:42~O

21.8° N., 143~8° Ee

Mariarla Islands region

h about 190 km.

M Z eP 12:00:27.6 d

WP Z eP 12:00:27.0 d

U Z eP 12:00:27~2 d

Ka Z eP 12:00:28.8 d

IU PEZ eR 12:25:12

C&GS card 3~63:

11:48:22.7

0.60N., 126.7° E.

Halmahera region

h about 42 km

Jan. 25

A z eP 12:59:54.1 c

22
Table 5. --Distant earthquakes--Continued

Jan. 28, 1963 Jan. 28--continued

M Z eP 12:22:12.8 d C&GS card 7-63:

A Z eP 12:22:11.9 d 13:00:50·7

D Z eP 12:22:11.9 d 54.7° N., 161.60

E.

u Z eP 12:22:12.7 d Alaska Peninsula

Na Z eP 12:22:11.5 c h about 33 kIn

Fa Z eP 12:22:13.7 c Magnitude 6.0-6.5 (Pas)

Hi Z iP 12:22:16.2 c 6.7 (HVO).

Ha Z iP 12:22:16.5 c

U PEE is 22:30:25 Jan. 29

U FEZ eSS 22:34:10

iR 22~38:37 M Z iP 09:29:54.6 d

A Z eP 09:29:55.4 d

C&GS card 10-63: D Z eP 09:29:54.8 d

12:12:19.8 N Z eP 09:29:55.0 d

2.60S~, 149.90 E. u Z eP 09:29:55.1 d

New Britain Ka Z iP 09:29:49.4 d

h'about 33 kIn Hi Z iP 09:29:54.0 d

Magnitude 6.5 (Pas) Pa Z iP 09:29:55.6 d

6.7 (HVO). Na Z iP 09:29:56.7 d

Jan. 28 C&GS card 8-63:

09:21:14·3

M Z iF 13:07:44.8 d 49.7° N., 154.9° E.

A Z eP 13:07:45.7 d Kurile Islands

D Z iP 13:07:45-9 d h about 126 kIn.

i 13:08:54.1 c

N Z eP 13:07:45.5 d Jan. 30

WP Z eP 13:07:45.4 d

U Z eP 13:07:45.6 d 111 Z eP 10:29:10.9 c

ePP 13:09:10.7 c U PEN eSKSP 10:41:26

iPcP 13:10:06.9 c iSS 10:48:36

Ha Z eP 13:07:40.5 c iG 11:02:36

Hi Z eP 13:07:43.7 c

Pa Z eP 13:07:44.1 d COOS card 10-63:

Na Z eP 13:07:49.1 c 10:10:04.1

U FEZ is 13:13:21 55.6° S., 28.3° w.

iR 13:16:49 Sandwich Islands region

M Z Tmax 13:45:33 h about 33 kIn

A Z Tmax 13:45:28 Magnitude 6. 5 (Pas)

D Z rnnax 13:45:30 7· 5 (HVO).

N Z Tmax 13:45:11

WP Z Tmax 13: 45:24 Jan. 31

U Z Tmax 13:45:21

HA Z Tmax 13:43:33 Hi Z eP 05:18:03.6 d

Hi Z Tmax 13:44:55 Pa Z eP 05:18:04.3 d

Pa Z Tmax 13:45:08

Na Z Tmax 13:45:15 C&GS card 9-63:

05:06:46.0

z{.9°N., 126.3° E.

23
Table 5.--Distant earthquakes--Continued

Jan. 31, 1963--Continued

C&GS card--Continued

Ryukyu Islands

h about 33 kIn.

Feb. 4

M Z iP 23:29:50.5 d

A Z eP 23:29:5105 d

D Z eP 23:29:51.0 d

N Z eP 23:29:51.3 c

WP Z eP 23:29:51.4 d

Hi Z iP 23:29:49.5 d

U Z eP 23:29:50.8 d

Pa Z iP 23:29:52.0 d

C&GS card 10-63:

23:21:09.0

48.5° N., 154.9° E.

Kuri1e Islands

h about 85 kIn.

Feb. 5

U FEZ eSS 21:10:35

eR 21:22:35

C&GS card 10-63:

20:39:21.6

38.40 S., 73.2° w.

Near coast of central Chile

h about 41 kIn

Magnitude 6.3-6.5 (Pas)

6.0-6.3 (Brk)

5.8-6.0 (Pal)

Feb. 12

M Z iP 23:14:45.2 d

A Z iP 23:14:44.3 d

D Z iP 23:14:43.6 d

N Z iP 23:14:44.5 d

WP Z iP 23:14:4403 d

U Z iP 23:14:44.4 d

Na Z iP 23:14:40.5 d

Pa Z eP 23:14:45.4 d

Hi Z iP 23:14:50.0 d

Ha Z iP 23:14:54.3 d

2

Feb. 12--Continued

C&GS card 13-63:

23:07:28.9

17.8° S., 178.6° w.

Fiji Islands

h about 583 kIn

Magnitude 5.5 (CGS)

Feb. 13

M Z eP 09:01:47.8 c

A Z iP 09:01:48.4 c

D Z iP 09:01:47.5 c

N Z iP 09:01:48.1 c

WP Z iP 09:01:48.0 c

U Z eP 09:01:48.3 c

Ha Z iP 09:01:46.3 c

Ka Z eP 09:01:44.2 c

Hi Z iP 09:01:48.7 c

Fa Z eP 09:01:49.4 c

Na Z iP 09:01:47.0 c

U FEZ iP 09:01:48.0 c

eR 09:25:34

U FEE is 09:11:32

iSS 09:16:41

U PEN eSSS 09:19:46

C&GS card 13-63:

08:50:02.2

24050N., 121.8° E.

Northern Fo~osa

3 deaths and Widespread damage

h about 33 lml

Magni~ude 7.3 (Pas)

7.3 (Brk)

700-7.3 (Pal)

7.5 (lIVO)

Feb. 13

M Z iP 18:23:05.5 c

A Z iP 18:23:04.8 d

D Z iF 18:23:03.9 d

N Z iP 18:23:05.0 d

wP Z iP 18:23:04.9 d

Na Z iP 18:23:02.8 d

Pa Z iP 18:23:06.3 d
Table 5.--Distant earthquakes--Continued

Feb. 21

M Z iP 02:43:22.'T c

A Z eP 02:43:2306 c

D Z eP 02:43:23.0 c

WI> Z iP 02:43:23.4 c

U Z eP 02:43:23.3 c

Ha Z eP 02:43:13.3 c

Na Z iF 02:43:22.3 c

C&GS card 16-63:

22:07:54·3

5.00S., 14406° E.

Eastern New Guinea

h about 80 kIn

Magnitude 6.5 (Pas)

6.0 (Pal)

6.2 (HVO) 6.0 (CGS)

Feb. 14--continued

u PEZ iR 22:37:14

C&GS card 16-63:

18:13:5501

9.90 S., 160.8° E.

Solomon Islands

h about 29 kIn

Magnitude 6.0-6.3 (Pal)

6.5 (Pa~)

6.5 (Brk)

5.8 (eGs)

6.6 (lIVO).

Feb. 13, 1963--Continued

Hi Z eP 18:23:07.5 d

Ka Z eP 18:23:06.8 c

Ha Z iP 18:23:05.8 c

U FEZ iP 18:23:06 c

eR 18:37:34

U PEE is 18:30:42

U PEN eG 18:35:00

Feb. 14

C&GS card 14-63:

02:33:35·9

33.4° N., 139.2° E.

South of Honshu, Japan

h about 168 kIn

Magnitude 4.4 (CGS)

M Z iP 07:16:32.8 c

D Z eP 07:16:31.3 c

N Z eP 07:16:32.3 c

WP Z eP 07:16:32.1 c

U Z iP 07:16:32.0 c

Na Z iP 07:16:30.4 c

Pa Z iF 07:16:33.9 d

Hi Z iP 07:16:34.6 c

Ka Z iP 07:16:3400 c

Ha Z iP 07:16:34.2 c

Feb. 21

Ha Tmax 12:42:14

C&GS card 15-63:

07:04:40.8

7.2- S., 128.2° E.

Banda Sea

h about 197 kIn

Magnitude 6.5 (Pas) 5.8 (CGS)

Felt: Darwin, Australia.

Feb. 14

M Z iP 22:18:22.3 c

D Z eP 22:18:21.5 d

N Z eP 22:18:21.8 d

U Z eP 22:18:21.8 d

Hi Z eP 22:18:2403 c

U PEN eG 22:34:28

C&GS card 17-63:

12:01:19.4

40.4° N., 125.0° w.

Near coast of northern California

h about 33 kIn.

Feb. 21

M Z eP 13:24:14.6 d

A Z eP 13:24:14.0 d

N Z eP 13:24:14.5 d

WP Z iP 13:24:14.4 d

U ·z eP 13:24:14.0 d

Hi Z iP 13:24:15.8 c

Ka Z eP 13:24:16.6 c

Ha Z eP 13:24:18.9 d

5
Table 5.--Distant earthquakes--Continued

Feb. 21, 1963--Continued Feb. 26

C&GS card 15-63: M Z iP 20:24:22.2 d

13:16:05.6 A Z eP 20:24:20.7 d

20.6° S., 175.1° w. U Z iP 20~24:22.0 d

Tonga Islands region Na Z iP 20:24:20.4 d

h about 33 kIn isP 20:25:2005 c

Magnitude 5.2 (CGS). Pa Z iP 20:24:24.3 d

Hi Z iP 20:24:24.8 d

Feb. 22 ipP 20:25:03.0 d

Ka Z iP 20:24:25.6 d

M Z eP 08:06:14.2 c Ha Z iP 20:24:26.5 d

A Z eP 08:06:13.5 c isP 20:25:17.9 c

N Z iP 08:06:14.1 c U PEZ iP 20:24:22 d

WP Z iP 08:06:14.1 c ipP 20:25:05 d

U Z eP 08:06:13.9 c isP 20:25:25 c

Na Z iP 08:06:10.7 c U PEZ ipPP 20:27:31 an

Pa Z iP 08:06:15.8 c ipPPP 20:28:46 an

Hi Z iP 08:06:16.8 c iPKKP 20:42:41

Ka Z iP 08:06:17.1 c U PEE iPP 20:26:47

Ha Z iP 08:06:19.8 c is ,20:32: 46

iScS 20:33:21

isS 20:34:00

C&GS card 16-63: U PEN iG 20:40:05

01:58:57.0 M Z Tmax 21:32:24

17.8° S., 178.8° w. A Z Tmax 21:32:16

Fiji Islands region WP Z Tmax 21:32:16

h about 550 kIn Ha Z Tmax. 21:32:11

Magnitude 5.0 (CGS).

Feb'. 24 C&GS card 16-63:

20:14:08.7

M Z eP 13:44:18.2 d 7.5° s., 146.2° E.

A Z eP 13:44:17.4 d Eastern New Guinea

D Z eP 13:44:17.9 d h about 171 km

N Z eP 13 :44: 17 •5 d Magnitude 7.3-7.5 (Pas)

WP Z eP 13: 44: 17 · 5 d- 7.0-7.3 (Brk)

U Z eP 13:44:17.4 d 6.8-7.0 (Pal)

Hi Z iP 13:44:15.5 d 7.1 (CGS)

Pa Z iP 13:44:14.8 d 7.0 (liVO).

Ka Z eP 13:44:20.9 d

Feb. zr

C&GS card 17-63: M Z eP 04:40:17 d 13:34:15.7

14.6° N., 91.40w. u PEZ eP 04:40:15 d

is 04:48;27 Central Guatemala iSS 04:52:39 h about 135 kIn

Magnitude 5.7 (CGS). eR 04:57:55

U PEE iG 04:55:15

26
Table 5.--Distant earthquakes--Continued
Table 5.--Distant earthquakes--Continued

Mar. 7, 1963--Continued Mar. 10--Continued

C&GS card--Continued

Near coast of southern Chile

h' about 45 kIn

Magnitude 5.6 (eGs).

Mar. 8

u PEZ eR 03:08:0'7

C&GS card 20-63:

10:51:48.1

29.9° B., 71.2° w.

Near coast of central Chile

h about 70 km

Magnitude 6.0-6.3 (Pas)

5· 5 (eGs).

Mar. 10

14:03:01.9

14:03:01.7

14:03:01.4

14:03:01.,3

14:03:01.4

C&GS card 22-63:

02:44:31.5

1902° S., 169.7° E.

New Hebrides Islands

h about 33 kIn

Magnitude 5.3 (eGs).

Mar. 8

U PEZ eR 03:48:27

C&GS card 22-63:

03:24:57.2

19.2° S., 169.6° E.

New Hebrides Islands

h about 49 kIn

Magnitude 4.8 (CGS).

Mar. 10

M Z Tmax 02:12:18

A Z Tmax 02:12:26

D Z Tmax 02:12:08

N Z Tmax 02:12:20

WP Z Tmax 02:12:18

U Z Tmax 02:12:23

Pa Z Tmax 02:11:56

Hi Z Tmax 02:11:40

Ka Z Tmax 02:12:35

Ha Z Tmax 02: 10: 50

C&GS card 20-63:

01:26:04.1

56.2° N., 153.8° w.

Kodiak Island, Alaska

h about 33 km

Magnitude 501 (eGs).

Mar. 10

M Z Tmax 12:50:12

A Z Tmax 12:50:02

D Z Tmax 12:50:07

N Z Tmax 12:50:06

Na Z Tmax 12:50:06

C&GS card 20~63:

28

M Z iP

A Z eP

N Z eP

WP Z eP

U Z iP

C&GS card 20-63:

13:51:04.3

2.40N., 126.6° E.

Celebes Sea

h about 41 kIn.

Mar. 15

M Z iP 00:27:41.0 c

iPcP 00:27:54.1 d

A Z iP 00:27:4207 c

iPcP 00:27:54.4 d

D Z iP 00:27:41.7 c

ePcP 00:27:54.8 d

N Z eP 00:27:42.2 c

iPcP 00:27:55.0 d

WP Z iP 00:27:42.0 c

ePcP 00:27:53.9 d

U PEZ iP 00: 27': 42·.3 c

U PEZ iPcP 00:27:53.2 d

C&GS card 21-63:

00:16:01.3

8.4° N., 126.40E.

Mindanao, Philippine Islands

h about 117 kIn

Magnitude 5.0 CGS).
Table 5.--Distant earthquakes--Continued

Mar. 16, 1963

M z

A Z

D Z

N Z

U Z

Pa Z

Na Z

Hi Z

Ka Z

Ha Z

U PEZ

U PEZ

U

Ha

PEE

Z

iP

iF

iP

iP

eP

eP

iP

iP

iF

iP

iP

i

i

iPP

is

iSS

eR

iG

Tmax

08:53:36.1 c

08:53:37.0 c

08:53:3607 c

08:53:36.5 c

08:53:36.4 c

08:-53:37.0 d

08:53:38.2 d

08:53:3600 d

08:53:34.1 c

08:53:26.7 c

08:53:37.2 c

08:53:57 d

08:54:13 c

08:55:45 d

09:00:'39

09:04:14

09:07:51

09:05:13

09:45:44

Mar. 20

M Z eP 04:53:12.0 d

D Z eP 04:53:10.9 d

N Z eP 04:53:11.6 d

WP Z iP 04:53:11.6 d

U Z eP 04:53:11~8 c

Pa Z iF 04:53:13.0 c

Na Z iP 04:53:09.5 c

Hi Z eP 04:53:14.8 c

Ka Z iP 04:53:14.9 c

Ha Z iP 04:53:17.5 c

C&GS card 24-63:

04:45:49.5

19.6° 8.,179.3° w.

Fiji Islands region

h about 680 kIn

Magnitude 5.2 (eGs).

Mar. 20

Mar. 24

C&GS card 23-63:

16:38:55.8

2.4° s., 138.40

E.

Western New Guinea

Magnitude 5.5 (CGS)

h about 40 kIn.

. -

C&GS card 21- 63 :

08:44:48.3

46.50

N., 154.7° E.

Kuri1e Islands region

11 about.26 kIn

Magnitude 7.0 (Pas)

7.8 (Brk)

6.8 (Pal)

6.2 (CGS)

7.3 (HVO).

M z iP 16:49:57.1 d

02:20:03.5 c

02:20:03.0 c

02:20:02.4 c

02:20:01.9 c

02:20:08.6 c

02:43:22

Mar. 20

M Z eP 04:50:37.6 d

A Z eP 04:50:3602 d

D Z eP 04:50:36.5 d

N Z iP 04:50:37.2 d

Pa Z iF 04:50:38.1 c

Hi Z eP 04:50:3904 d

Ka Z iP 04:50:39.6 c

Ha Z iP 04:50:42.2 c

C&GS card 24-63:

04:43:13.5

19.90

S., 179.1° w.

Fiji Islands region

n about 680 kIn

Magnitude 5.2 (eGs).

29

M Z iP

A Z iP

D Z eP

Na Z iP

Ha Z iP

U PEN iL

C&GS card 26-63:

02:07:12.8

9.70s., 120~4° E.

Sumba Island region

Magnitude 6.3 (Pas)

6.0 (Pal)

5.4 (CG·S)

h about 57 kIn.
Table 5.--Distant earthquakes--Continued

Mar. 24, 1963 Mar. 26--continued

M Z iP 09:55:10.7 c Pa Z iP 09:57:40.8 c

A Z iP 09:55:11.2 c Na Z eP 09: 57: 34.7 d

D Z iP 09:55:1003 c Hi Z eP 09 : 57 :41. 5 d

Pa Z iP 09:55:12.8 c Ka Z eP 09:57:43.6 c

Ha Z eP 09:57:46.4 c

C&GS card 25-63: U PEZ iP 09:57:38 c

09:43:20.2 is 10:05:15

9.00N., 125.6° E. iSS 10:08:51

Mindanao region, PEE iG 10:09:49

Philippine Islands iR 10:12:23

Magnitude 5.2 (eGs)

h about 51 kIn. COOS card 26-63:

Mar. 24 09:48:19.7

29.7° S., 177.80w.

M Z iP 21:42:38.1 d Kermadec Islands

A Z eP 21:42:39.8 d h about 45 kIn

D Z iP 21:42:40.5 d Magnitude 6.8-7.0 (Pas)

N Z eP 21:42:39.7 d 7.0 (Brk)

WP Z eP 21:42:39.7 d 7.0 (Pal)

U Z eP 21:42:40.0 c 7.1 (RYO).

Pa Z iP 21:42:40.1 c,

Ha Z eP 21:42:28.8 c Mar. 26

U PEZ eR 21:52:03

M Z Tmax 22:21:23 M Z iP 13:34:24.2 d

D Z Tmax 22:22:05 A Z iP 13:34:22.9 d

N Z Tmax 22:21:34 D Z eP 13:34:22.6 d

WP Z Tmax: 22:21:24 N Z eP 13:34:23&2 d

U Z Tmax 22:21:34 WP eP 13:34:23.2 d

Pa Z Tmax: 22:21:32 U Z eP 13:34:22.8 c

Ha Z Tmax 22:19:37 Pa Z eP 13:34:24.9 d

Na Z eP 13:34:21.4 d

COOS card 24-63: Hi Z eP 13:34:26.4 d

21:35:24.4 Ka Z eP 13:34:28.2 d

51.8° N., 178.1° w. Ha Z eP 13:34:31.5 c

Andreanoi' Islands, U PEZ iP 13:34:23

Aleutian Islands iSS 13:45:33

h about 57 kIn iR 13:49:23

Magnitude 6.0 (Pas) U PEN is 13:41:55

5.0 (Pal)

5.5 (CGS) coos card 27-63:

5.4 (RYO). 13:25:02.6

29.8° S., 177.9° W.

Mar. 26 Kermadec Islands

h about 42 kIn

M Z iP 09:57:39.4 d Magnitude 7.3 (Pas)

A Z iP 09:57:38.0 d 6.5 (Pal)

D Z iP 09:57:37.2 c 5.9 (CGS)

N Z eP 09:57:37-7 d 6.4 (RYO).

WP Z eP 09:57:37.6 d

U Z eP 09:57:37.3 d

30
Table 5.--Distant earthquakes--Continued

Mar. 26, 1963

M z iP 19:56:56.2 c

A Z eP 19: 56: 57.0 c

D Z iP 19:56:56.4 c

N Z iP 19:56:56.7 c

WP Z iP 19:56:56.6 c

U Z iP 19:56:56.5 c

Pa Z eP 19:56:5102 c

Na Z eP 19=56:57.3 c

M Z iP 21:45:00.9 d

A Z iP 21:45:01.7 d

D Z iP 21.:45:01.1 d

N Z iP 21:45:01.4 d

WP Z iP 21:45:01.4 d

U ·z iP 21:45:01.2 d

Pa Z iP 21:45:03.1 d

Na Z iP 21:45:01.4 d

Hi Z eP 21:45:00.5 c

Ha Z iP 21:44:52.3 d

U PEZ iP 21:45:01

iG 22:03:05

U PEE is 21:53:55

U PEN eSSS 22:00:31

C&GS card 25-63:

19:47:46.0

44.4° N., 146.7° E.

Kuri1e Islands

h about. 110 kIn

Magnitude 5.6 (CGS)

Mar. 26

C&GS card 24-63:

.21:34:41.1

36.00N., 135.7° E.

Near east coast of Honshu,

Magnitude 6.0-6.3 (Pal)

6.5 (Pas)

6.5 (Brk)

509 (CGS)

605 (HVO)

17:01:11.4 d

11:21:52.9 c

11:21:52.5 c

11:21:52.3 c

11:21:55.2 c

iP

eP

eP

eP

eP

z

z

z

z

z

M

M

A

WP

Hi

Mar. 30

M Z iP 02:02:21.9 c

A Z eP 02:02:21.6 c

D Z eP 02:02:20.5 c

N Z eP 02:02:21.6 c

WP Z eP 02:02:21.6 c

U Z iP 02:02:21.4 c

Na Z eP 02:02:18.5 c

Hi Z iP 02:02:24.1 d

Ka Z eP 02:02:24.8 c

Ha Z iP 02:02:25.1 c

C&GS card 29-63:

01:53:28.8

19.10S., 169.1° E.

New Hebrides Islands

Magpitude66.1 (CGS).

h about 1°kIn.

Mar. 30

C&GS card 27-63:

11:12:31·3

30.2° S., 17708° w.

Kermadec Islands

h about 38 kIn.

Mar. 28--continued

U FEZ iSS 00:45:33

iSSS 00:49:15

iR 00: 56: 59

C&GS card 27-63 :

00:15:47.5

66.3° N., 19.6° w.

Iceland

Magnitude 7.0-7.3 (Pas)

6.5 (Bks)

6.5-6.8 (Pal)

7.0 (HVO) , h about 15 kIn.

Mar. 28

Japan

00:39:31

00:52:23

00:40:36

PEE is

iL

PEN iPS

u

u

Mar~ 28

31
Table 5o--Distant earthquakes--Continued

Mar. 30, 1963--Continued

D Z iP 17:01:11.7 d

N Z eP 17:01:11.7 d

WP Z eP 17:01:11.9 d

U Z eP 17:01:11.6 c

Pa Z iP 17:01:13.6 d

Na Z eP 17:01:12.5 d

Hi Z iP 17:01:11$2 d

Mar. 31--Continued

C&GS card~-Continued

Magnitude 6.3-6.5 (Pas)

6~5 (Bks)

600-603.' (Pal)

507 (eGs) 6.3 (liVC)

C&GS card 27-63 :

07:07:36·3

6.10S., 149.00E.~ New Britain

Magnitude 6-3 (Pas)

6.0 (Pal)

5-7 (CGS).

C&GS card 27-63:

19:22:53·3

30.0° S., 178.0° w.

Kermadec Islands

h about 50 kIn

Magnitude 6.3-6.5 (Pas)

6.5 (Bks)

5.8 (CGS).

Mar. 31

M Z iF 19:32:13-9 d

A Z eP 19:32:12.9 d

D Z eP 19:32:12.2 d

N Z iP 19:32:13.4 d

WP Z iP 19:32:13.4 d

U Z iP 19:32:13.4 d

Hi Z eP 19:32:14.9 d

C&GS card 27-·63:

16:51:56.6

44.20 N., 148.0° E.

Kurile Islands

b about. 33 kIn

Magnitude 5.3-5.5 (Pal)

6.3 (CGS)

Mar. 30

M Z Tmax 22:20:44

A Z Tmax: 22:20:33

D Z Troax 22:20:32

N Z Tmax 22:20:30

U Z Tmax 22:20:31

Pa Z Tmax. 22:20:01

Na Z Troax 22:20:29

C&GS card 28-63:

21:13:5401

8070So, 109.2° w.

About 2,000' kIn southwest of

Galapagos Islands

h about 33 kIn

Magnitude 406 (CGS).

Mar. 31

M Z iP 05:40:05.6 d

A Z eP 05:40:02.2 d

N Z eP 05:40:02.7 d

U Z eP 05:40:03.4 d

Pa Z eP 05:40:07.3 c

U PEN is 05:47:36

U PEZ eR 05:54:44

C&GS card 27-63:

05:30:49.3

.29.9° S., 177.7° w.

Kermadec Islands

h. about 48 kIn.

32

Mar. 31

D

U

U

Z iP

PEN iG

PEE eR

07:18:13.7 d

07:32:48

07:35:32
Table 6.--u.s. Geological Survey seismograph stations in Hawaii

station Symbol

Location

Latitude Longitude

N. W.

Altitude

(M)

above sea

level

Equip

(Z, vertical; N, 

E, east-we

----------

......----+-----......-----+-----------------

Uwekahuna

(Hawaiian Volcano

Observatory) G

Mauna Loa------------

Ahua-----------------

Desert---------------

North Pit------------

WestWhitney Vault--------

u

M

A

D

N

WP

w

19°24.9'

19°24.7'

155°23·3'155°15.9'

155°23·3'

1,240

2,010

1,070

815

1,115

l,llO

. 1,210

Press-E

(Seismometer and 

periods are 15 a

respectivelyo)

Short-period Spren

HVO-l: .zJJ.

Short-base liquid-

April 9, 1963 to M

Wood..Anderson (N

on an experiment

basis.

Operated by John F

Yamamoto and oth

members.

Remote recording H

Remote recording 

Do.

Do.

Do.

Installed October 

Bosch-Omori: N, E. 

period 9 seconds

February 1, 1963
Table 6.--u.s. Geological Survey seismograph stations in Hawaii--Contin

Location

Symbol -t-----....----.........-.. station

Hi10---------------

Pahoa--------------

Kamuela------------

HaleakaJ.a, Maui----

Hi

Na·

Pa

Ka

Ko

Ha

Latitude

N.

Longitude

) VI.

155°5501'

156°15.0'

Altitude

(M)

above sea

level

20

205

205

140

495

2,090

Equipm

(Z, vertical; N, 

E, east-w

HVO-l: Z

Wood-Anderson: N, 

by Sister Thec

School.

HVO-l: ZO

Operated by Rev. 

September 1, 19

operator, Rev. 

took over dutie

HVO-I, buried Jul

HVO-l: z.

Operated by Mr. K

Pahoa School.

HVO-l: Zo

Operated by Mr. E

Preparatory Aca

Not operated in 1

HVO-I: z.

N, 

by the staff' of

Park at Haleaka

See footnotes at end of table, po 35.
Table 6.--u.s. Geological Survey seismograph stations in Hawaii--Continued

HVO-l is a hinged, vertical-component seismograph with seismomet

galvBJlometer periods of 0 CI 5 second It Over-damping of both seismometer and galvanometer 

to control the strong galvanometer reactiono This seismograph has a peak magnificatio

about 20,000 at a period of 0025 secondo Recording is optica.l, on photographic paper 

2/ HVO-2 is a moving-coil, vertical-component seismograph with a seismometer peri

oC/8 secondo Its signal is transmitted over telephone wires to the Hawaiian Volcano O

where it is recorded on smoked paper. The response of this seismograph is similar to 

HVO-lo Records from these seismographs at the _M, A, and D stations are recorded on a 

drum to permit an accurate comparison of arrival times at these stations.
TIle following persons or agencies reported "felt" earthquakes during

the first quarter, 1963. Their assistance is gratefully acknowledged.

•

North Hawaii

Honokaa School

Mrs. Hunter

Mr. Van Gorder

Mrs. Lindsey

Miss Tulley

Mrs. Thwine

Mrs. Richards, Jr.

Mrs. Christensen

Mrs. Walker

Hawaii Preparatory Academy

Mr. McCabe

Mrs. Weight

Mrs. Eklund

Miss Wallace

Mr. stewart

Kilauea summit region

Mrs. Loucks

Keakelani School

Mrs. Hansen

National Park Headquarters

Volcano House Hotel

Mrs. Mist

Mr. Koyanagi

Shipman Ranch (Keaau)

Mrs. Wentworth

Mrs. Duncan

Kilauea Military Camp

Miss English

Mrs. Fraser

Mrs. Yamamoto

Kona coast

Mr. Johnson, Jr.

Mr. Sutherland

Miss Greenwell

Mr. Paris

Mrs • Mitchell

Mr. S. Greenwell

Mrs. Rice

Mr. Sleightholm

Mr. Yeoman

Mrs. Higashihara

Mrs. Cherry

Mrs. Miyatake

Mrs. Hayashi

Mrs. Yamasaki

Mrs. Korenaga

Puna

Mr. Edwards

Mr. HB3

Miss'Takemoto

Mrs. Isbell

M:r. Warner

Mrs. Walker

Hila region

Mr 0 Sadamoto

Mr. McMurray

Mr. Pierce

Miss Perriera

Mrs. Schaeffer

Mrs 0 Duncan

Mr. Elliot

Mrs. Ingledue

Mr. Okamura

Mr. Warner

Mrs. Baldwin

Mr. Ho

Mr. Onuma

Mrs. Veriato

Mrs. Breyton

Kau region

Mr. Godfrey

Mrs 0 Schattauer

Mrs. Billings

Mrs 0 Yamamoto

Kau Police Dept.

Mr. Manierre

Mr. Edwards

Central Hawaii

Kulani Honor Camp

Lt. Carvalho

Mr. Kamiko

Puu Analiulu School

Mau! Island

Mrs. Boyum

Mr. Griffiths

Mr. Ching

Dr. Leekrick

Ulupalakua Ranch

Hana-Maui Hotel

Haleakala National Park

Mr. Hupp

Mr.a. L~nQ.eay Kan,'.llu1 Airport .';-.; "

Oahu Island

Mr. Johnson
UNITED STATES

DEPARTMENT OF THE INTERIOR

GEOLOGICAL SURVEY

HAWPtIIAN VOLCANO OBSERVATORY

SUMMARY 30

April, May, and June 1963

By

Harold L. Krivoy, Willie T. Kinoshita,

Arnold T. Okamura and Robert Y. Koyanagi

Issued March 1965

Observatory Staff

I

l

Geology

J. G. Moore ~Scientist-in-Charge)

Cu K. Wentwortll

W. T. Kinoshita (Arrived from Menlo

Pa.rk in June)

G. Kojima

R. Y. Koyanagi

H. L. Kri'voy

A.. T. Okamura

A. S. Ryall

N. Sherrill

Geochemistry

R. T. Okamura

Support

E. T4 Endo

J. C. Forbes

w. H. Francis

B. J. Loucks

A. Yamamoto
•

Contents

Page

Chronological summary---------------------------------------------- 1

Tilting of the ground around Kilauea caldera----------------------- 5

Seismic summary-- - --.-- - - - - - - - - - - - - - - --- - --- - - - - - - - - - - - - - - --- - - - ---- 9

Persons or agencies reporting felt earthquakes during the quarter--34

Illustrations

Figure 1. Map of the island of Hawaii showing seismograph stations

and localities mentioned in the text------------------ 4

2. Tilting of the ground around Kilauea caldera------------ 8

Tables

Table A. Tilt coordinates and cumulative changes at Uwekahuna

Vault, May 8-13--------------------------------------- 2

1. Tilt coordinates at Uwekahuna Vault---------------------- 6

2. Tilt coordinates and changes at bases around Kilauea

caldera------------------------------------------------ 7

3. Number of earthquakes and minutes of tremor recorded

on seismographs around Kilauea caldera--------------~--lO

4. Local earthquakes recorded by seismographs of the U.S.

Geological Survey--------------------------------------14

5. Distant earthquakes--------------------------------------22
•

Chronological summary

Slight inflation of Kilauea volcano during early April was indicated by

northwestward tilting at Uwekahuna. Very heavy rainfall (26 inches in one

week) was followed by moderate but persistent southward tilting between

April 17-30. Part of the apparent collapse may have been caused by cooling

and shrinking of near-surface lava storage, but most of it is best attributed

to rainfall-induced deformation in the immediate vicinity of Uwekahuna Vault.

April was not an unusual month seismically: shallow caldera quakes were

slightly more numerous but activity elsewhere was similar to that during

March (table 3). Three earthquakes were felt in Hawaii during the month

~table 4).

Strong northward tilting at Uwekahuna characterized the first 8 days

of May. Except for slightly increased activity along the Kaoiki fault,

including a magnitude 3.4 "felt" earthquake on March 4, the statistics of

shallow and deep seismic activity continued unchanged from April.

h m

At 21 50 on May 9, an episode of unusual seismic activity consisting

of frequent earthquakes in a background of continuous harmonic tremor

began. Early in this crisis, which lasted 4 days, about a dozen earthquakes

were felt lightly in the Kilauea summit region. Only two of these could be

identified individually {table 4). Otherwise, earthquakes were not felt,

although they occurred at rates as high as five per minute. The appearance

of harmonic tremor on instruments of the Kilauea summit network suggested

that lava was moving at a shallow depth beneath the summit region. Earthquakes that could be read through the tremor background originated along the

Koae fault system in the vicinity of Puu Koae on Kilauea's southwest flank

(fig. 2)~ Fresh cracks up to 2 feet in width were eventually found in this

region in a zone several miles long. The cracks were all tensional. The

tilt diagram for March 18 to May 12 (fig 2) very clearly shows tumescence of

an elongate zone along the southwest rift zone. Movement of lava into this

region from the summit reservoir is believed to have caused the seismic

activity and extensive cracking.

While the southwest rift zone was swelling and cracking, a remarkable

collapse of the Kilauea summit region was recorded by the short-base

tiltmeter at Uwekahuna. Although the summit collapse is shown in a gross

manner (7-day averages) in table 1, a more detailed record of this event is

provided by the unaveraged tilt coordinates at Uwekahuna Vault derived from

a stepped-up reading schedule during the collapse (table A). On May 12

summit collapse ceased and rapid reinflation began, as indicated by rapid

northwestward tilting at Uwekahuna. A remarkably similar episode of summit

collapse accompanied by earthquakes and ground cracking south of the

caldera occurred in December 1950 (Volcano Letter 510).

The frequency of earthquakes in and near Kilauea caldera decreased

sharply after the May 9-12 crisis. Three additional earthquakes were felt

on Hawaii during the rest of the month.

During June, seismic activity in the vicinity of Kilauea caldera and

along the upper part of Kilauea's east rift zone increased slightly.

Tilting at Uwekahuna declined about the end of May and showed little change

during June.
•

Four earthquakes were felt on Hawaii during June. The largest was of

magnitude 4.2 and occurred beneath the south flank of Mauna Loa on June 6 e

Note on instrumentation.--Early in April an HVO-2 seismometer was

installed at Makaopuhl Crater. Its signal is transmitted over a telephone

line to the Observatory, where recording of data from the new station (MP)

was begun on April 18.

Table A.--Tilt coordinates and cumulative changes at Uwekahuna Vault

during the May 9-12 summit collapse

Date Time

Tilt coordinates and cumulative changes

N-S S(N-S) E-W S(E-W)

urad urad

•

May 8

9

10

10

10

10

10

10

10

11

12

12

13

08h30m

08h30m

OOh15m

03h 1Sm

06h30m

08h30Tn

11h30m

14h30m

lSh30m

08h OOm

09h30m

12h30m

08h30m

505

505

509

503

496

493

494

493

490

491

484

489

486

2

o

o

+4

-2

-9

-12

-11

-12

-15

-14

-21

-16

-19

482

482

494

499

505

506

505

508

508

505

510

508

510

o

o

+12

+17

+23

+24

+23

+26

+26

+23

+28

+26

+28
, , ... , , '0 It ........

A S••IMO.,"'-' Station

• Town Of Joe.litr

C...'out in"tval 1,000 'H' D.hllll il ...

T....,.,.., h u, 11If'"

EXPLANATION

. I J

'" "

t" - ......------, ,--------------------+------_-.::'-.,.

-- 10· Lou'a"oetto. --+ 10.

IL

E-

•

Figure l.--Map of the island of H~waii showing se~smograph stations

operated by the Geological Survey and localities mentioned in the

text. Epicenters of earthquakes are given in terms of geographic

coordinates, which are indicated at the edges of the map.

3
Tiltin of the round around Kilauea calderao~~Tilt~ng of the ground

around t e summ~t of K~lauea ~s mon~tored da~ly by a short-base water-tube

tiltmeter in Uwekahuna Vault. and at irregular. intervals it is measured on

a regional scale by means -'of a network of field tiltc:.bases and a portable

water-tube'tiltrneter'o The attitude of the ground surface at each tilt base

is reported in terms of"northlE>south-and east-west tilt'coordinateso Both

coordinates at each station were arbitrarily set equal to 500 when measurements at that station were beguno Increasing tilt coordinates correspond

to northward and eastward tilting of the'earthUs surface; ioeo J to a relative subsidence toward' the north and easto A one-unit change in coordinate

corresponds to a tilting of 1 microradian (1 mm per km) in the direction

indicated o

Table 'lo~-Tilt coordinates at Uwekahuna Vault,

April, May, and Jun€ 1963

Date N..,8 E-W Date N-S E-W

April 7 495 482 June 2 504 496

14 496 481 9 507 494

21 490 483 16 507 493

28 491 483 23 507 493

May 5 501 483 30 505 497

12 491 504

19 494 502

26 501 497

4
·' ••

Table 2c - --Tilt coordinates and changes a.t bases arouIld Kilauea ca.lder

(J1

( -6 Tilt Base Date Tilt coordinates Rate 10- rad/mo) 

. (location) (1963) and direction of 

N-S E-W tilting since 

last reading

Uwekahuna May 10 471 .. 6 8.0 East 

(19°25.5' N. , 155°17.4' We)

Tree Molds 14 512.4 2.8\ N. 15.9° E

(19°26.3' N. , 155°17.3' W.)

Sand Spit 14 829.9 709·9 4.2 S. 15.4° E

(19°24.1' N. , 155°16.8 1 w.)

Ka1ihipaa 11 559·5 451.0 s. 68.5° E

(19°21.4' N. , 155°15.3' W.)

Keamoku 10 519·1 564.1 15·9 N. 28.9° w

(19°25.1' N. , 155°19.0' W.)

Ahua Kamokuko1au 10 607.9 583.2 26.0 N. 79.0° E

(19°2207' N., 155°16.6' w.)

Kipuka Nene 13 497£9 507.7 7.4 S. 51.1° E

(19°19.4' N. , 155 0 7' W.)

Hilina Pali 13 501.4 501.9 4.7 S. 28.80 E

{19° 18.2' N.. , W.)

Kapapa1a Ranch 11 503.1 1.0 N. 78° w. 

(19°20r 5' N... 155°23.,8' w.
\

CJ

o

I

\

I

)

I

t4- .. ..

\

\ \

\ 1

(~/ (

./

Kia

/ /

J

.,/

I

o

o

o

Cb

•

t

5 KM

........ 2.5 )( 10-6 RADIANS I MONTH

MAR. 'S, 1963 - MAY 12, 1963

A PUU koae

Q

2000

Kap

...

Figure 2.--Tilting of the ground around Kilauea caldera, March 18 to

May 12, 1963. The vector depicting. tilting at a given tilt-base

points in the direction of maximum relative subsidence and has a

length proportional to the rate of tilting during the measurement

interval. Closed circles represent field tilt-bases; open circles,

short-base water-tube tiltmeters.

6
•

Seismic summary.--Events recorded by the U.S. Geological Survey

seismograph network in Hawaii fall into two categories: local earthquakes

and tremor originating in the region of the Hawaiian Islands, usually

within 100 km of at least one seismograph, and distant earthquakes

originating more than 3,000 km from Hawaii. As an index of seismic

activity at Hawaiian volcanoes, daily counts of earthquakes and minutes

of tremor recorded by seismographs in Hawaii are listed in table 3. The

earthquakes are separated into groups on the basis of region of origin

as determined by analysis of records obtained daily at the Observatory

(U, M, A, D, N, MP). Earthquakes of magnitude 2.5 or greater are

generally sufficiently well recorded to be located with greater precision;

they are listed individually in table 4. Data on identifiable phases from

distant earthquakes are listed in table 5.

Locations of the seismograph stations are shown on figure 1, and

essential data on the stations were given in Summary 29.

7
CD

•

Table 3.--Number of earthquakes and minutes of tremor recorded on seismograp

U, M, A, D, N, and MP arolmd Kilauea caldera

Tremor is separated into three categories: deep, intermediate, and shallow) on the b

amplitudes on seismographs in the summit regiona Unless otherwise stated, tremor 

be associated with movement of magma within the central complex of Kilauea.

Earthquake categories are: Halemaumau rock slides, which are detected by the charac

they produce on the North Pit seismograph; shallow earthquakes in the Kilauea cald

shallow ea,rthquakes along the SW, rift zone of Kilauea and the adjacent portion of 

system; earthquakes along the eastern half of Kilauea's east rift zone (from the P

earthquakes from a source about 30 km beneath Halemaumauj from the upp

and the adjacent fault systems of Kilauea's south flank, and earthquakes from othe

Mauna Kea, etc. ?=Obscured by the swarm of earthquakes near Puu Koae.

Tremor

(in minutes) Earthquakes

Date

(1963) Inter- Halee- . Kilauea SW. rift Eastern Upper

Deep mediate Shallow maumau caldera and East maumau East 

slides Kaoiki rift 30 km rift

rApril 1 3 8 ... 2 170 11 ------- 4 13

2 11 -_ ... __ c=-_ 90 5 5 10 

3 34 90 13 __ 4 2

4 _c. ___ .. c.- ____ ------ 137 11 .m_=_ ____ 2 -------

5 c= __ 150 15 3 s::- ______

6 _ 3 _-='_r=oII __ __ 130 10 ____ 1 ------- 

7 c:. em- ------ 2 160 13 e::- ___ t=II'_ 3 6

8 ------ ...----- ___ 197 25 -------- 5 l l 

9 ----- 6 ------- 195 10 1 ____ 5 -

10 ____ c. ------ ------ _.. 179 10 _-=-_c-. __ 6 3

11 ----=-- _"' __ -==- __ c::::l_ 196 18 ---_ ... - 2 6 1 

12 ----- c=- _____ 150 16 -=------ 2 __ c:::::. __ ea:t

13 32 e- ___ 2 1 115 5 ------ 2 2 2 

14 --=:-=_-- .. 102 27 --=----- 4 6 1 

15 .. r-a _____ .. 70 29 1 3 __ r::_II::2_

16 6 2 100 12 __ __ e:::3 2
•

Table 3.--Number of earthquakes and minutes of tremor recorded on seismograp

U, M, A; D, N, and MP around Kilauea caldera--Continued

Tremor

(in minute s ) Earthquakes

Deep

Intermediate Hale - Kilauea Shallow maumau caldera

slides

SW. rift

and

Kaoiki

Eastern

East

rift

Halemaumau

30 km

Upper

East

rift

lO

Apr. ·17

18

19

20

21

22

23

24

25

26

27

28

29

30

May 1

2

3

4

5

6

7

8

9

10

11

12

13

5

18

2

4

?

?

?

?

5

?

?

?

?

5

3

190

1440

960

5

1

1

??

??

100

55

90

80

59

70

120110

110

100

110

130

113

120

100

95

120160

130

75

80

100

?

?

?

?

7

7

9

9

20

12

6

5

11

9

12

20

5

12

16

12

7

27

16

8

20

17

?

?

?

?

?

3

?

?

??

2

5

6

1

3

3

6

3

5

5

4

1

7

2

4

4

9

2

1

1

1

?

?

?

?

3

9

2

3

10

15

10

6

2

2

1

2

1

?

?

??
•

Table 3.--Number of earthquakes and minutes of tremor recorded on seismograph

U, M, AJ D; N, and MP around Kilauea caldera--Continued

Tremor

(in minutes) Earthquakes

Date

(1963) Inter- Hale- Kilauea SW. rift Eastern Hale- .Upper

Deep mediate Shallow maumau caldera and East maumau East 

slides Kaoiki rift 30 km rift

May 14 45 ------ ------ 43 12 ------ 4 ____ t=:II_ 1 

15 ---- ----- ------ ------- 40 6 ------ 3 1 -

16 ---- ----- ------ ------ 36 15 ------ 3 2 1 

J-7 ---- ----- ------ ------ 33 9 ------ 1 2 1 

18 ---- ----- ------ ------ 36 18 ------ 6 3 

19 12 ----- ------ ------ 80 14 ------ ----- 3 2 

1 

20 ---- ----- ------ ------ 70 25 ------ 1 1 1 

21 ---- ----- ------ ------ 45 7 ------ 2 3 1 

1 

22 ---- ----- ------ ------ 25 10 ------ 5 1 1 

23 10 ------- ------ 16 8 ------ 2 ----- 24 15 ----- ------ ------ 40 36 ------ 3 2 

25 ---- ____ c.- ------ ------ 37 26 ------ 1 ----- 

26 ---- ----- 5 ------ 42 16 1 4 2 

27 ---- ----- ------ ------ 61 12 ------ 2 3 1 

28 ---- 5 ------- ------ 43 10 ------ 3 1 1 

29 ---- ----- ------ 1 47 15 ------ 3 1

30 ---- ----- ------- 52 8 ------ 2 1 1 

31 ---- ------ 30 20 ------ 5 ------ 

June 1 ---- ----- ------ 37 16 1 11 3 1 

2 --=--- ----- ------ 35 10 1 3 2 1 

3 ---- ------ 29 8 ------ ------ 4 

4 c-. ____ ____ ------- ------ 42 9 ------ ____ e. 3 1 

5 .... ------- 47 12 8 7

6 _..., __ c::. c-.c.= ------ ------ 45 18 ------ 3 6 1 
, ,

Table 3. --Number of earthquakes and minutes of tremor recorded on seismographs

U, M, A, D, N, and MP around Kilauea caldera--Continued

Tremor

(in minutes) Earthquakes

Date

(1963) Inter- Hale- Kilauea SW. rift -Eastern lHale- Upper

Deep mediate Shallow maumau caldera and East maumau East 

slides Kaoiki rift 30 km rift

June 7 10· 60 12 ------ 9 5

8 4 65 13 ------ 3 10

9 ------ 65 10 1 3 10 1 Ko

10 ------ 75 21 1 3 15· -----

11 4 51 8 ------ 2 21 -----

12 3 2 65 15 ------ 12 20 1 Ko

13 ------ 68 18 ------ 8 27 -----14 6 11 48 12 ------ 20 17 -----

15 6 ------ 66 15 3 2 18

16 5 68 10 ------ 7 11 1 Ko

17 ------ 40 10 ------ 5 15 1 Ko

18 ------ 31 8 ------ 3 8 -----

19 43 ------ 42 3 ------ 1 18

20 ------ 35 7 ------ 2 11 -----

21 34 8 ------ 6 9 1 Mau

22 ------ 43 8 ------ 8 7 -----

23 3 ------ 48 11 ------ 15 6 1 Ma..u

24 ------ 60 14 ------ 7 6

25 ------ 46 9 ------ 6 9 -----

26 ------ 43 10 ------ 4 25 -----

27 ------ 26 3 ------ 2 2

28 ------ 52 6 ------ 1 1 Kam

1 Mo

29 ------ 87 8 ------ 3 45 1 Kon

30 10 -------- 77, 8 ------ 3 21 1 Kam
Table 4. --Local earthql.1akes recorded by seismographs of the U. S. Geological Surve

April, May, and June 1963

[Entries for a given quake are: date, origin time {Hawaiian Standard Time), magnitude

and felt reportse All earthq1.lakes of magnitude 2.5 and larger, as well as many fav

smaller ones, occurring on or near the island of Hawaii are included in the list.

In the following list, some origin times are followed only by "KM 30" and a statement 

These are all members of a continuing family of quakes noted also in other Summarie

mean focus for this group is beneath Halemaumau at a depth of 30 .{19°24

w. ).

In Summary 29, a persistent earthquake sequence was codified by the initials KT which 

a "poor" location along the Kalapana Trail. This designation is retained for the p

Summary but will be discontinued in the future unless Kalapana Trail quakes resume. 

epicenter for these quakes is 19°20' N., and 155°05' W., and shallow depth is assum

In Summary 24, "Kaoiki" was introduced as a symbol for listing any of a family of qua

focus 19°24' N., 155°25' w., h=3 to 8 km. This symbol is used in the following lis

Date Time Magni- Depth Epicenter 

(1963) tude (km) 

h m s Lat. N. Long. w. Description

- - -

Aprc 2 09 12 06.0 3.1 ------ ______ wa,_ e- __ ca.-. ____ KT----------------------- 

2 10 00 Ilt7 2e5 .. e-a ___ __ e- __"'c._ _... -----_.. l(III- - - - - - - - - - - - - - - - - - _. - ...... 

2 15 37 14.2 2.8 ____ c:._ --------- KM 30-------------------- 

3 06 10 09·5 2.0 3 19°17.8' 155°12c7' 12 km southeast of Ahua 

seismometero

7 06 00 5507 2.0 8 19°26.2' 155°25.0' 7 km south-southwest of 

Mauna Loa seismometer, 

7 07 38 39.8 2.1 3 19°27.9' 155°23e2' 2 km south of Mauna Loa 

seismometer.

7 08 24 8 3.3 _..,.alll:!!' _____ -------- 7 23 04 47.7 2.2 10 19°21.1' 155°16.5' 5 km south-southwest of 

Ahua seismometer.
Table earthquakes recorded seismographs of the U.Se Geological Surve

April, May, and June 1963--Continued

Date Time JY1agni coo Depth Epicenter 

(1963) tude (km) 

h m s Lat. N. Long. W. Description -

Apr 5 8 09 02 51·5 8 19°26.5' 155°27.4' 10 km southwest of Maill1a 

Loa seismometer.

8 19 58 21.3 3.7 13 19°13' 156°27' 60 km southwest of 

Kealakekua.

10 21 28 13c2 2.2 -----=- __ -=-_ .. c:::::. __ --------- KM 30------------------- 11 07 11 30.9 2.0 -------- -=--------- KM 30------------------- 

11 07 31 23c-5 2.5 8 19°11.7' 155°39.8' 16 km north=-northwest of 

Naalehu.

11 13 01 40.5 2.7 ----- 

11 22 01 19.8 2 .. 0 15 19°19.3' 155°12.1' 9 km southeast of Ahua 

seismometer.

12 00 19 06.0 2.6 25 19°23.7' 155°20.4' 6 km southwest of 

Uwekahuna seismometer.

13 19 19 02.9 2.5 5 19°14.3' 155°14.6' 6 km west-southwest of 

Apua Point.

13 19 20 2.2 3 155°13.3' 3 km west-southwest of 

Apua Point.

13 22 52 16.0 3.2 _ e- __ .... __ -w _____ --------- Kaoiki----------------- 

14 05 22 18. ·8 3·3 13 19°29' 156°17' 37 km west of Kealakekua 

17 17 23 40.1 2.3 - ... _-- _ca_eaJl __ c::a-=- .. _-- KM 

18 07 12 40.6 2.0 10 19°20.1' 4 km south of Ahua 

seismometer.

19 07 19 14.7 2.2 10 19°19.5' 155°16.1' 5 km south of Ahua 

seismometer.

19 17 24 10.. 8 2.1 35 19°21.4' 155°10.5' 2 km south of Makaopuhi 

20 03 12 2.0 .. __ .. KM 

22 04 01 29·2 3.2 C""' __ __ -.r:J-=:S_ __ KM 
rio

rrab1e 4. ...Loca1 earthquakes rFcorded by seismographs of the U. S. Geological Surve

April, May: and June 1963--Continued

Date Time Magn.i- Depth Epicenter 

(1963) t'ude (km) 

h m s Lat" N. Long. w. Description

- - -

Apr. 23 03 44 35.6 3.0 13 19°4l! 156°17' 25 km wsw of Keahole Poin

25 07 18 33.3 2·9 8 19°21.8' 155°14.9' 2 km BE of Ahua seismomet26 23 46 33.2 2.3 -., ..... c::a .... .. __ ___ c:::= .... KM

27 01 49 38.4 3.4 15 19°32.8' 155°14.8' 15 km NNE of Uwekahuna 

seismometer. 

27 01 53 43.0 2.6 3 19°26.8' 155°41.3' 27 km ESE of Kealakekua

28 20 20 46.9 2.0 < 3 19°21.2' 155°16.0' 3 km S of Ahua seismomete

28 13 43 56.4 3.0 ... ____ --=-------- Kaoiki-------------------29 02 43 03.7 2.7 10 19°20.9' 155°2402' 2 km NW of Desert

seismometer.

29 02 52 47.1 2.2 .... ..-_- _____ Kaoiki-=-----------------

29 19 15 40.0 2.7 5 19°51.2' 155°30.2' 12 km NNW of Pohakuloa

30 01 25 29·0 2.7 8 19°47.5' 155°35.8' 10 km ENE of Pohaku1oa 

May 1 17 30 40e7 2·9 ---- ______ -------_ ... Kaoiki-------------------

4 15 22 55.0 2.2 38 19°19.6' 155° 05.5 43 km S of Hi1o---------=4 16 11 25 .. 0 3·,4 --.:0-- ________ ----------. Kaoiki-------------------

4 18 22 59·0 3.0 8 19°10.3' 155°30.6' 5 km SW of Pahala--------

9 20 51 43.5 2.9 3 19°22.3' 155°17.4' Koae fault system near Puu 

Koae ..

9 20 54 07.1 3.1 3 19°22.9' 155°1900' 

9 20 54 51.1 2.7 < 3 19°21.9' 155°18.9'9 20 56 0207 2.7 < 3 19°21.3' 155°19.1'9 20 58 50$1 2·5 < 3 19°22,,0' 9 21 00 42.6 2.0 < 3 19°22.3' 155°18.4' 
.....

U1

Table 4. earthquakes recorded by seismographs of the U.S. Geological Surve

April, May, and June 1963--Continued

Date Time Magni- Depth Epicenter 

{1963 ) tU.de -{km) 

h m s Lat" Net Long. w. Description

- - -

May 9 21 02 17.0 < 3 19°20.5' 155°19.8' Koae fault system near Pu

9 21 04 38.3 < 3 19°20.5' 155°19.8' 

9 21 08 06.1 2·3 < 3 19°22.3' 155°18.6' 

9 21 38 01$6 2.4 < 3 19°21.1 1 155°19.2' 9 22 48 37.4 < 3 19°22.0'

9 22 56 13 .. 6 204 < 3 19°20.6' 155° 18.2' 

10 00 16 50.2 2.4 < 3 19°22.5' 155°16.8' 

10 00 42 2.1 < 3 19°21.2' 155°17.8' 

10 03 59 2.1 < 3 19°20.9' 155°19.3'

10 04 05 200 < 3 19°22.0' 155°19.1' ----do-------------------

10 04 31 2.2 < 3 19°21.1' 155°19.3' 10 04 57 < 3 19°2085' 155°16,,0' 

10 05 22 1307 2.0 < 3 155° 18.9' 

10 07 01 17·9 2e1 < 3 19°21.5' 155°1900' 10 07 28 29·3 2.5 < 3 19°21.6' 155°18.9' 

10 08 12 2e3 < 3 19°19.8' 155°21.2' 

10 09 05 04.9 2.3 < 3 19°20.7'

10 09 30 2.4 < 3 19°20.9' 155°18.4' 

10 14 14 36p1 2·5 < 3 

10 14 20 30·9 2,2 < 3 19°21.8' 155°18.6' 

10 19 10 4100 2·9 10 19°16.5' 5 km WNW of Apua Point.,.- 

11 06 15 42.1 2.1 < 3 19°22 .. 2' 155°19.0' Koae fault system near Pu

12 09 01 07.7 2.2 < 3 19°201'3' 155°19.2' 

14 06 48 2.6 8 19°31.2' 155°55.0' 1 km of Kealakekua----

14 09 31 8 2.0 8 155°17.2' 3 km SSE of Uwekahuna 

seismometer.

14 16 20 19.2 2r,7 :a: ___ t::=:=I KM 30--------------------

16 08 37 2.1 8 19°19.0' 155°15.0' 6 km. SSE of Ahua seismom

16 15 24 4203 8 19°21,,2' 155°17.2' 3 km SW of Ahua seismomet
Table earthquakes recorded by seismographs of the UoSo Geological Surve

April, May, and June 1963-o=ContinuAd

Date Time Magnic=> Depth Epicenter 

(1963) tu.de 

h m s Lat .. No Longe w. Description ..-.. - -

16 21 22 41e5 5 10 km WNW of Pohak'uloa = =0 

17 01 31 2c,8 8 19°36 Y 156°26' 57 km WNW of Kealakekua ,.., = 

17 09 19 07,,0 205 20 19°2305' 3 km NW of Ahua seismomet

17 04 54 16e9 2,2 25 19°12.3' 155°3202' 4 km west ef 

19 01 54 59,4 304 5 1204! 155°2103' 14 km ea,st of Paha1ac= "'_=:.o_

19 02 21 25:5 3v9 8 155°3101' 6 km NW of 

19 03 01 37.7 2$2

19 17 20 o8c6 

19 19 37 2.0 

19 19 56 1IIC2 __ ___ 

19 22 06 23.9 2,4 8 19°41' 156c, 08' 10 km SW of Keaho1e Point

20 03 09 52cl 2,2 Kaoiki =0 "'"' I!OC = .... <roo ....... =- =_.." __ "". ""'.,. _20 04 11 2.,8 8 191; 3 i 155°3106' 7 km NW of 

20 10 31 27,3

20 10 31 54c6 :3l1E::lt.2t.-:l::::Ic.ae=e:t

20 10 39 28.7 201 G:I em r= c:::::a a:::a -=:I c:::::=I

20 12 15 01,,0

21 06 19 2604 2.4 3 155°06,,1' 12 km BE of l'-1akacpuhi

seismometer.

2J_ 09 25 5902 2,,0

21 14 26 5503 2<l6 8 155°29.0 1 18 km S of 

21 19 27 0907 2·3 3 155°1608' 16 km BE of Desert

seismometer"

21 20 15 2·5 13 19'='39' 42 km WSW of Keahole Poin

22 06 07 57. 7 208 45 19°16.9' 155°01*5' 25 km SW of Pahoa=--.... 

I

22 23 01 20,5 3 3 km NW of 

23 10 34 32r5 5 19°14.2' 12 km SSE of Desert 

seismometer"
Table 4.--Local earthquakes recorded by seismographs of the U.S. Geological Surve

April, May, and June 1963--Continued

Date Time Magni- Depth Epicenter 

(1963) tllde \km) 

h m s Late 1'J • Long. W. Description - -

May 25 01 49 00.2 m::IE:IClIe-I.-» __ 

25 04 32 56eO 2.4 10 19°17.1' 155°13.1' 10 km SW of Makaopu-hi 

seismometer.

27 02 23 09.8 e-:::3 C31C_ ____ c=__ 

27 16 19 52·5 2e6 13 18°56.2' 155°14e9' 50 km S of Ahua seismome

28 09 52 05·0 2.1 3 19°15.6' 155°18.1' 18 km S of Uweka.huna 

seismometer.

28 23 56 53.2 202 13 18°5609' 155°16.0' 48 km S of seismome

30 18 54 2e2 10 19°31eO' 155°03.4' 23 km SSE of Hilo.".---=--

30 19 55 04.8 KM 

30 23 32 14.5 2.9 8 19°58c5 t 155°37.8' 10 km SE of KamllelEt ... -..., .... 

31 00 09 40.. 2 8 19°26.5' 155°26.5 1 9 km SW of Mauna Loa 

seismometer. 

31 22 19 05.7 290 8 19°21,,8' 155°14e9' 3 km SE of Ah:.la seismome

June 1 02 45 3 19°33R6' 155°55.7' 5 km N of 

1 12 07 2 2.3 eo- ... _ c:::;o:-=- KM 30--------------------

2 01 30 4405 3 19°37e6' 159°03r-4' 20 km NW of 

3 03 53 48.6 3,.0 CII:l ___ CllE __ a8 

3 09 18 6 19°2308' 4 km SSE of lTwekahuna 

seismometero

4 07 28 42e4 8 19° 13,· 9' 20 km NNW of

4 19 59 2007 2.3 10 9 km SSE of Al1ua 

seismometerG

6 09 01 23.3 2'14 __ e- __ ___ ....... 

6 19 19 40.8 ___ __ 

6 22 25 38e8 3 19°11·9' 155°33.1' 15 km NNE of Naalehu.." .... 
Table earthquakes recorded by seismographs of the U.S. Geological Surve

April, May, and June 1963--Continued

Date Time Magni- Depth Epicenter 

tude (km) 

h m s Lat., N. Long. w. Description -=-

Jtli'1.e 7 12 52 25.6 15 19°23.4' 13 km SW of 

7 22 04 05·7 40 19°18.8' 155°08.4' 7 km SW of Makaopuhi

seismometer.

8 03 49 06rl 2·9 .. .-E"_--=" ____ c=.- 

9 05 03 28.7 < 3 155°45.5' 15 km EN"E of ... 

10 20 49 51,,8 8 19° 22.,8 1 155(\15.1' 1 km NE of Ahua seismonlet

10 21 O() 6 8 3 km ENE of Ahua 

seismometerr

12 03 50 01.. 7 8 19°2041 w 155°09,0' 4 km SE of' Makaopuhi

seismometer"

12 07 58 32.0 2 .. 4 <3 19"28.7' 155°46.8' 15 km ESE of Kealakekua--...

12 11 49 56,6 2,,0 8 1550 08.3' 5 km SE of 

seismometer.

13 07 28 15·· 7 2,4 ..... __ =-- __ c.-"''''' KM 30--------------------

13 07 32 50,,3 2,.4 ==-1"2 .. __ KM 

14 11 17 57.· 0 30 2 km NE of TJwekahlLY1a 

seismometer.. 

14 11 43 57.8 25 1 km of Uwekahuna 

seismometer ..

14 11 45 37.0 25 155°17.. 1' 1 km NE of UwekahuIla 

seismometer.

14 12 46 2,4 25 19°25.9' 155°16.4' 2 km NE of Uwekahuna 

seismometer.

16 06 31 2.2 3 10 km SE of Hookena 

17 04 14 3542 < 3 19°34.2' 155°53.3' 7 km NNE of Kealakekua 

17 04 36 19·0 2.4 13 19°21.7' 155°06.2' 9 km E of Makaopuhi 

seismometer.

1'7 14 48 42-9 2.0 5 19°18.6' 155°14.4' 8 km SSE of Ahua 

seismometer..
Table earthquakes recorded by seismographs of the U.S. Geological Surve

April, May, and June 1963--Continued

Date Time Magni- Dept};1 Epicenter 

\1963 ) tade r(km) 

h m s Lat. N. Long. w. Description

-

June 17 22 42 42·9 2.7 5 19°22.0' 3 km SE of Ahua seismomet

20 21 30 16e4 2r6 c. a;z .. ... __ 

21 17 54 33.9 2_6 3 19°5007' 155°22.1' 8 km SW of 

23 03 35 3.2 13 20°48' 155° 58' 30 km ENE of Ha1eaka1a 

seismometere

24 04 39 2,,1 =z ... ____ c::. ____ --------- KM 30--------------------

24 08 36 33.8 2.3 _c._ .... -=- _ __ C2_=_ _____ _ KM 

24 13 20 42.8 2.2 -==- ... KM 30--------------------26 11 42 05.3 2112 40 19°15.8' 155° OS. 8' 12 km SSE of Makaopuhi 

seismometer.

28 00 13 04.3 2.8 40 19°13.1' 155° 06.8' 19 km SSE of Makaopuhi 

seismometer.

28 03 56 30.3 2.3 3 19°53.2' 155°44.8' 16 km SSE of Kamuela 

28 22 50 50.1 3.4 13 21°20' 157°05' 19 km NW of Kalaupapa, 

Molokai.

29 05 14 47.7 2$5 3 19°24.3' 155°52.5' 5 km NE of Hookena 

29 18 43 26.5 2.1 8 19°22.0' 155°14.7' 3 km SE of Ahua 

seismometer..

30 04 59 59.6 2.1 10 19°22.0' 155°15.0' 3 km SE of Ahua

seismometer.

30 11 13 22.7 3.. 1 8 19°51.2' 155°42.1' 20 km S of Kamuela 
Table 5.--Distant earthquakes

[Times are reported in Greenwich Civil Time which is 10 hours faster than

Hawaiian Standard Time. A "c" following the time of P indicates

compressional first- motion; a "dn indicates dilatational first motion.

Station symbols, locations, and instrumentation were presented in

summary 29~ Magnitudes calculated from the Hawaii seismograms are

followed by (HVO). Location of epicenters, origin times, focal

depths) and magnitudes reported by other institutions are taken from

"Preliminary Determination of Epicenters" published by the U.S. Coast

and Geodetic Survey]

April 9

April 6--Continued

C&GS card 27-63:

11:19:23.3

63.4° No, 149.5° w.

Central Alaska

h about 39 km

Magnitude 5~5 (cas).

C&GS card 30-63:

07:03:06.5

17.5° S., 178~9° w.

Fiji Islands region

h about 526 km

Magnitude 5.1 (CGS).

iP 11:27:28.7 d

iP 29.0 d

iP 29.3 d

eP 28.5 c

Z

Z

Z

Z

M Z iP 02:09:43.3 d

A Z eP 42.8 d

U Z iP 43.0 d

Na Z iP 39.0 c

Pa Z eP 43.3 c

Hi Z iP 44.1 c

Ha Z iP 47.8 c

M

A

D

U

April 6

C&GS card 35-63:

14:47:5505

5504° S., 128.2° We

South Pacific Ocean

h about 33 km

Magnitude 5.8 (CGS).

April 6

April 3

U PEZ eR 15 :23 :49

Pa Z Tmax 16:32:32

C&GS card 25-63:

16:18:55.6

53.2° No, l71~7° W.

Andreanof Islands, Aleutian Islands

h about 142 km

Magnitude 6~25-6.5 (Pas)

5.5 (Brk)

5.7 (CGS).

April 2, 1963

M z iP 16:25:43.5 d

A Z iP 44~5 d

u Z iP 43.8 d

Ha Z iP 31.1 c

Ka Z iP 35.8 d

Hi Z iP 42.7 d

Na Z iF 46.7 c

M Z iP 07:10:24.9 d

A Z iP 24.3 d

D Z eP 23.2 d

U Z iP 24.7 d

Pa Z iP 25.3 c

Hi Z iP 26.7 c

Ka Z iF 27.2 c

Ha Z iP 29·5 d

C&GS card 30-63:

02:02~25.l

17.7° S., 178.7° w.

Fiji Islands region

h about 538 km

Magnitude 4.9 (cas).

20
Table 5.--Distant earthquakes--Continued

C&GS card 31-63:

07:50:30.2

9.2°S~, 125.0° Eo

Timor

h about 33 km

Magnitude 5.2 (CGS).

C&GS card 31-63:

02:20:57.5

6.20S., 76.50w.

Central Peru

h about 125 km

Magnitude 6.75-7 (Pas),

6.3 (CGS).

April 10, 1963

M z iP 08:02:57.6 c

A Z iP 57.4 d

D Z eP 56.1 c

U Z iP 57.3 d

Na Z eP 55.4 c

Ha Z iP 08:03:00.6 c

Z iP

April 13--Continued

Hi

C&GS card 30-63:

14:31:21.0

3.40

S., 135.4° E.

Near north coast of New Guinea

h about 31 km

Magnitude 5.6 (cGS).

April 16

April 16

M Z eP 01:41:19.5 d

A Z iP 18.7 d

D Z iF 18.0 d

u Z iP 19.4 c

Pa Z eP 20.6 d

Ha Z eP 23.4 d

U PEZ iP 19 d

u FEZ iSS 01:56:15

U PEZ iR 02:04:51

U PEE is 01:51:17

U PEE iPPS 01:52:00

U PEN iSSS 01:59:24

iG 02:01:21

C&GS card 31-63:

01:29:19.4

0.80S., 128.0° E.

Ha1mahera region

h about 33 km

Magnitude 7 (Pas), 6.1 {CGS),

7.5 (HVO).

M Z iF 01:48:55.2 c

A Z iP 54.6 c

D Z iP 53.5 c

Pa Z eP 56.1 d

Ha Z eP 59.1 c

U PEZ is 01:59:01

U PEZ iR 02:12:29

U PEN iSS 02:04:17

C&GS card 31~63:

01:36:59.4

1.2088' 128.4° E.

Ha1mahera region

h about 33 km

21 Magnitl1de 6.3 (CGS), 7.5 (HVO).

02:33:04.3 d

03.7 d

33.9 c

03.9 d

03.8 d

33.9 c

04.6 d

02.1 d

03.2 d

05.9 d

10.8 c

04 d

36 c

02:44:26

02:43:08

02:48:40

02:54:54

14:42:43.0 d

43.2 d

42.1 d

4249 d

40.8 d

45.0 d

iP

iP

eP

eP

iP

eP

Z eP

Z iP

Z ipP

Z eP

Z eP

Z epP

Z eP

Z eP

Z iP

Z eP

Z iP

PEZ iP

PEZ ipP

PEZ iPS

PEN is

iSS

iG

April 13

M

A

A

D

U

U

Na

Pa

Hi

Ka

Ha

U

U

U

U

April 13

M Z

A Z

D Z

U Z

Na Z

Pa Z
April 16, 1963

Table 5.--Distant earthquakes--Continued

April 19

A Z iP 02:07:13.9 c

D Z eP 12.6 c

U Z iP 14.3 c

Ha Z eP 18.0 c

u PEE iSS 02:22:01

U PEN iSSS 02 :25:28

U PEN iG 02:27:11

U PEZ iR 02:31:04

C&GS card 31-63:

01:55:10·9

0.70S., 128.00E.

Halmahera region

h about 32 km

Magnitude 6.0 (CGS),

7.25 (HVO).

U PEl\I is 07:59:22

U PEN iG 08:14:16

U PEZ iPS 08:00:53

U PEZ iSS 08:05:44

U PEZ iL 08:13:16

U PEZ iR 08:18:06

C&GS card 32-63:

07:35:23.7

35.8° N., 96.9° E.

Tsinghai Provinc~ China

h about 33 km

Magnitude 7 (Pas), 6.75-7 (Brk),

6. 1 (CGS), 7 -~HVO).

April 24

April 16

C&GS card. 31-63:

02 :05 :,42

1.30S., 126.9° E.

Halmahera region

Magnitude 5.8 (cas).

M

A

D

U

Z

Z

Z

Z

iP

eP

eP

eP

02:17:51.0 c

50.3 c

49.3 c

51.1 c

M Z iP 21:50:23.7 c

A Z eP 23.1 c

N Z iP 23.2 c

1Y1P Z iP 23.0 c

Ha Z iP 28.3 c

C&GS card 33-63:

21:42:49.0

20.80S., 179.1° w.

Fiji Islands region

h about 603 km

Magnitude 5.1 (CGS).

April 17

Pa Z iP 02:19:58.0 d

A Z iP 57.0 d

N Z iP 57.5 d

u PEZ is 02.:26 :43

U PEZ iR 02:32:53

U PEl'J iG 02:30:27

C&GS card 31-63=

02:11:26.1

19.6° S., 178.6° E.

Fiji Islands

h about 33 km

Magnitude 6.5-6.75 (Pas),

6.0 (Brk) ,

5.9 (cGS),

5.9 (HVO).

22

April 25

M Z iP 08:24:14.1 d

A Z iP 14.3 d

D Z iP 13.6 d

1Y1P Z iP 14.5 d

u Z iP 13.9 d

Ha Z iP 09.3 d

Coos card 33-63:

08:12:57.2

4.7 0N., 122.4° E.

Celebes Sea

h about 610 km

Magnitude 5.5 (CGS).
Table 5. --Distant earthquakes--Continued

C&GS card 34-63:

16:35:56_2

1.3° S., 128.7° E.

Halmahera region

h about 33 km.

April 25, 1963

M z eP 16:47:52.4

May l--Continued

Ka Z iP 19.0 d

Ha Z iP 20.3 c

u PEZ iP 16 c

u PEZ • ? 10:13:05 d 1 __

U PEZ isS 10:20:10

U PEE is 10:19:25

U PE:N i ? 10:20:29

U PEN iG 10:24:06

April 30

C&GS card 34-63:

21:44:17.1

51.4° N., 178.6° E.

Andreanof Islands,

Aleutian Islands

h about 60 km.

April 29

C&GS card 36-63:

10:03:20.0

19.00S., 169~0° E.

New Hebrides Islands

h about 140 km

Felt.

Magnitude 7 (Pas), 6.75-7 (Brk),

6.2 (CGS).

eP 06:02:58.7 d

iP 06:03:01.0 d

iP 59.2 d

eP 57.9 c

z

Z

Z

Z

May 4

M

A

U

Hi

21:51:43.0 d

21:57:25

22:01:25

22:29:33

Z eP

PEN is

PEZ iR

Z Tmax

Hi

U

U

Ha

C&GS card 35-63:

05:56:04.1

51.8° N., 175.4° w.

Andreanof Islands, Aleutian

Islands

h about 69 km

Magnitude 5.5 (cas).

C&GS card 37-63:

15:17:01·9

24.7° s., 69.5° w.

Northern Chile

Felt: Antafagasta

h about 50 km

Magnitude 5.1 (CGS).

M Z iP 01:10:17.4 c

Hi Z eP 23.6 c

U PEE is 01:20:41

U PEN iG 01:29:59

U PEZ iR 01:33:13

C&GS card 36-63:

00:58:18.3

0~7° S., 129.0° E.

Ha1mahera region

h about 33 km

Magnitude 6.75 (Pas),

6.5 (Pal), 5. 6 ,.,(CGS),

7.0 '{HVO).

May 1

M Z iP 10:12:15.8 d

A Z iP 15.7 d

D Z eP 14.6 d

MP Z eP 15.8 d

U Z eP 15.9 d

Na Z iP 13~1 c

Pa Z eP 17.2 c

Hi Z iP 18.0 d

May 5

Na z Tmax 17:14:18
Table 5.--Distant earthquakes--Continued

May 12

C&GS card 42-63:

15:08:46.1

5.6° So, 127q8° E.

Banda Sea

h about 405 km

Magnitude 5.3 (CGS).

C&GS card 40-63:

15:24:00.3

5.3° N., 125.7° E.

Off coast of Mindanao,

Philippine Islands

h about 70 km

Magnitude 5.6 (CGS).

A Z iP 20:15:53.5 d

D Z iP 53.7 d

MP Z iP 53.7 d

U Z iP 53.4 d

Ha Z iF 47.6 d

Hi Z iF 51.2 d

Na Z iP 57.1 c

U PEZ iP 54 d

U PEZ eS 20:21:43

U PEZ iR 20:25:52

Ha Z Tmax 20:53:44

C&GS card 37-63:

20:08:43.0

57.4° N., 153.9° w.

Kodiak Island, Alaska

h about 80 km

Magnitude 5.9 (CGS),

5~ 8 {HVO)8

iP 15:20:13.2 c

eP 13.0 c

eP 13.1 c

iP 13.5 c

iP 15:35:55.4 d

iP 55.5 d

iP 55.6 d

Z

Z

Z

Z

Z

Z

Z

May 14

M

A

N

MP

May 8

M

A

N

C&GS card 35-63:

10:22:11.2

36.6° N., 141.0c E.

Honshu, Japan

h about 53 km

Magnitude 6.1 '\CGS).

May 8., 1963

M Z iF 08:57:48.6 c

M Z iFF 08:59:16.2 c

A Z iP 08:57:49.4 c

A Z ePP 08:59:17.5 c

D Z iP 08:57:50.4 c

D Z iPP 08:59:17.2 c

MP Z iP 08:57:49.7 c

MP Z ePP 08:59:17.8 d

U Z iP 08:57:49.1 c

U Z iFP 08:59:16.7 c

Hi Z iF 08:57:47-5 c

Hi Z iPF 08:59:13.8 c

Pa Z iP 08:57:49.0 c

Pa Z ePP 08:59:16.0 c

Ha Z iPP 08:58:56.0 d

M Z Tmax 09:35:41

A Z Tmax 33

D Z Tmax 28

MP Z Tmax 26

U Z Tmax 24

Pa Z Tmax 28

Ka Z Tmax 09:34:36

Ha Z Tmax 09:33:46

C&G-S card 35-63:

08:50:56.0

54.9° N., 163.9° w.

Unimak Island,

Aleutian Islands region

h about 89 km

Magnitude 5.6 (CGS).

May 8

M Z eP 10:31:54.6 c

U PEE is 10:40:00

U PEE iG 10:46:34

U PEZ eR 10:49:20

24
Table 5.--Distant earthquakes--Continued

May 17, 1963 May 19--Continued

C&GS card 40-63:

07:33:17.5

31.0° S., 179.8° w.

Kermadec Islands region

h about 358 km

Magnitude 4.7 {CGS).

C&GS card 41-63:

22:40:06.7

24.4° S., 177.2° w.

Tonga Islands region

h about 70 km

Magnitude 5.9 (CGS).

May 19

May 17

PEZ ePP

PEZ iSS

PEZ iR

PEE iPS

PEE iPPS

PEN is

PEN eL

PEN eG

Z Tmax

Z Tmax

Z Tmax

Z Tmax

Z Tmax

Z Tmax

Z Tmax

Z Tmax

11:47:27.8 d

27.4 d

27.3 d

27.5 d

24.7 d

28.7 d

29.4 d

30.2 d

33.8 d

27.6 C

11:55:09

11:58:48

12:02:41

12:00:21

17:46:48

17:53:22

17: 50: 58

PEZ is

PEZ iR

PEN iL

C&GS card 40-63:

11:38:00.9

30.7° S., 178.3° w.

Kermadec Islands region

h about 34 km

Magnitude 6.75-7 (Pas),

6.5 (Brk), 6.2 (eGS'),

6.5 (INO).

C&GS card 45-63:

00:58:07.4

56.0° S., 123.9° W.

South Pacific Ocean

h about 33 km.

May 21

U PEZ eR 01:34:22

May 21

May 20

M Z iP

A Z iP

MP Z iP

U Z iP

Na Z eP

Pa Z iP

Hi Z eP

Ka Z iP

Ha Z iP

U PEZ iP

U PEZ is

U PEZ iSS

U PEZ iR

U PEE iG

C&GS card 39-63:

01:03:04.1

46.5° S., 75.1° w.

Coast of southern Chile

h about 33 km

Magnitude 6.75 (Pas), 6.5 (eGs),

7 (INO).

u

U

5 U

22:48:46.3 c

45.7 c

44.8 c

45- 9 c

47.3 c

48.8 c

51.8 c

01:20:37

01:35:01

01:47:57

01:29:31

01:30:07

01:27:26

01:42:29

01:43:30

03:04:35

31

33

26

34

15

23

27

07:42:18.2 c

18.0 c

17.0 c

17.6 c

18.1 c

20.8 c

iP

eP

eP

iP

iP

iP

iP

iP

iP

eP

eP

iP

eP

Z

Z

Z

Z

Z

Z

Z

z

z

Z

Z

Z

Z

M

A

D

U

Hi

Ka

Ha

M

A

D

MP

U

Ka

u

u

u

u

u

u

u

U

M

A

D

MP

U

Pa

Na

Hi
Table 5.--Distant earthquakes--Continued

May 21--Continued May 22--Continued

C&GS card 45-63:

17:30:15.4

11.1° S., 163.3° E.

Solomon Islands region

h about 33 km

Magnitude 5.75-6 (Pal),

5.4 (CGS).

C&GS card 39-63:

16 :25: 36. 8

52.2° N., 165.3° w.

Fox Islands, Aleutian Islands

h about 33 km

Magnitude 4.2 (cas).

May 22

C&GS card 41-63:

21:53:02.5

882° S., 115.7° E.

Java Sea

h about 33 km

Magnitude 5.6 (CGS).

May 22

fvr Z eP 14:05:31.6 c

A Z eP 32.8 c

MP Z eP 32.6 c

U Z eP 32.1 c

Ka Z eP 28.4 c

Hi Z iP 31.3 c

Na Z iP 35.3 c

u PEE is 14:12:40

U PEZ iSS 14:16:04

U PEZ iR 14:18:56

Ha Z Tmax 14:56:51

M

:May 23

M

z

Z

iP 22:06:09.3 c

eP 01:03:40.7 d

C&GS card 42-63:

15:42:4806

4.3° N., 127.9° E.

Molucca Passage

h about 58 km

Magnitude 5.0 (CGS).

May 22

M Z eP 15:54:33.6 c

A Z eP 34.1 c

N Z iP 33.9 c

MP Z eP 34.3 c

C&GS card 39-63:

13:56:43.0

48.6° N., 15407° E.

Kurile Islands region

h about 22 km

Magnitude 6.5 (Pas),

6 (Brk),

603 (CGS), 6.3 (HVO).

May 22

PEZ is 03:52:06

PEZ iR 03:58:32

C&GS card 42-63:

00:51:40.3

1.6° N., 12604° E.

h about 33 km

Molueca Passage

Magnitude 4.8 (cas).

May 23

M z iP 03:40:30.6 c

MP Z eP 29.9 c

U Z eP 30.1 c

Na Z iP 27.9 d

Hi Z iP 31.6 d

Ka Z eP 32.1 d

Ha Z iP 35.3 d

C&GS card 40-63:

03:33:1901

15.0° S., 176.7° w.

Fiji Islands region

h about 279 km

Magnitude 5.4 (CGS).

May 23

u

26 u

M z iP 16:32:15.1 c
Table 5.--Distant earthquakes--Continued

May 23 J 1963--Continued May 27--Continued

C&GS card 48-63:

03:35:34.7

10.9° S., 163.3° E.

Solomon Islands region

h about 33 km

Ma.gnitude; 505 (CGS).

C&GS card--Continued

Near east coast of Kamchatka

h about 54 km

Magnitude 5.25 (Pal), 5.7 (CGS).

May 29

M Z iP 23:15:38.4 c

A Z eP 40.1 c

N Z iP 39.0 c

Pa Z eP 4000 c

U PEZ iR 23:29:15

May 23

M Z iP 15:23:53.7 c

A Z eP 54.0 c

MP Z iP 54.7 c

u Z eP 53.9 c

C&GS card 41-63=

23:06:55.0

55.2° N., 159.9° E.

Near east coast of Kamchatka

h about 47 km

Magnitude 4.25 (Pal),

5.3 (CGS).

C&GS card 43-63:

15:12:05.7

6.0° N., 126~1° E.

Near east coast of Mindanao,

Philippine Islands.

h about 88 km

Magnitude 5.5 (CGS).

May 26 Tmax 19:42:57

Tmax 52

Tmax 51

Tmax 44

Tmax 19: 39 :4.4

Tmax 50

Tmax 25

Tmax 20

Tmax 34

z

Z

Z

Z

Z

Z

Z

Z

Z

May 29

C&GS card 49-63:

18:30:25

24.4° S., 114.7° w.

Easter Island region

h about 33 km

Magnitude 4.5 (eGs).

May 30

U PEZ iR 07:37:56

C&GS card 46-63:

06:56:09.3

54.2° S., 143.7° E.

South of Australia

h about 33 km

Magnitude 5.25-5.5 (Pal).

M

A

D

MP

C&GS card 46-63:

18:27:19.1

22.6° S., 114.4° w.

Easter Island region

h about 33 km

Magnitude 4~7 (CGS).

M

A

MP

Pa

Na

04:07:30.0 d

30.7 c

32.1 d

04:19:17

04:21:07

May 27

M Z iP

D Z iP

Pa Z eP

U PEE iG

U PEZ iR

C&GS card 42-63:

03:58:47.9

55.3° N., 160.1° E. 2
Table 5.--Distant earthquakes--Continued

June 2, 1963 June 6--Continued

June 4

C&GS card 44-63:

07:35:54.3

34.2° N., 138.7° E.

Honshu, Japan

h about 43 km

Magnitude 5.3 (CGS).

C&GS card 46-63:

21:04:42.3

1.2° S., 127.3° E.

Halmahera region

h about 31 km

Magnitude 5.2 (CGS).

C&GS card 46-63:

21:04:24.2

58.5~ S., 15.6° w.

Sandwich Islands region

h about 50 km

Magnitude 6-6.25 (Pal) I

5.9 (CGS).

U PEE iL 22:53:31

C&GS card 47-63:

04:16:37.7

55.4° s., 146.4° E.

800 km west of Macquarie Islands

h about 33 km

Magnitude 6.25 (Pas), 5.75-6 (Pal),

6.1 (CGS), 6.7 (HVo1.

C&GS card 51-63:

22:37:30.0

15.3° S., 173.2° W.

Samoa Islands region

h about 33 km

Magnitude 5.0 (CGS).

M Z iP 04:29:34.4 d

A Z iP 32.4 d

D Z eP 32.3 c

U Z eP 33.2 d

U PEE eG 04:53:58

U PEZ iR 04:58:14

June 10

June 7

June 7

C&GS card--Continued

Magnitude 5.8 (CGS).

U PEZ is 19:47:15

U PEZ eR 19:53:53

C&GS card 49-63:

19:30:35.6

8.5° N., 103.1° w.

Clipperton Island region

h about 33 km

Magnitude 5.5-5.75 (Brk),

5.25-5.5 (Pal),

4.9 (CGS).

05:30:56.9 d

56.0 d

56.1 d

07:45:56.6 c

08:03:01

22:05:29

iP

eP

eP

Z

Z

Z

Z eP

PEZ eR

PEZ eR

M Z iP 21:16:45.5 d

A Z eP 45.6 d

MP Z iP 45.8 d

u Z eP 45.7 c

Hi Z eP 46.3 c

U PEN eL 21:37:02

U PEZ eR 21:41:10

June 3

June 6

u

M

U

M

A

D

C&GS card 46-63:

05:18:55.1

19.9° N., 120.2° E.

Off north coast of Luzon,

Philippine Islands.

h about 33 km 28
Table 5.--Distant earthquakes~-eontinued

June 10, 1963

M Z iP 06:52:06.5 d

A Z iP 04.9 d

u Z eP 05.3 d

U PEN eSS 07:08:54

U PEN eG 07:16:32

U PEZ iR 07:20:21

June 17--Continued

C&GS card--Continued

Southwestern Yukon

h about 33 km

Magnitude 5.25-5.5 (Pal)

5.1 (eGG).

C&GS card 49-63:

18:22:09.6

3.5° G., 153.4° E.

New Ireland region

Fe1t-: Rabaul

Magnitude 5.1 (CGG).

h about 279 km.

C&GS card 49-63:

09:09:04.0

4.7° N., 126.5° E.

Ta1aud Islands region

h about 83 km

Magnitude '5.25-5.5 (Pal),

6.2 (CGG),

6.0 (HVO).

June 19

June 19

09:20:53.9 d

55.3 d

54.2 d

09:44:06

iP 18:31:19.4 d

iP 15.4 c

eP 17.4 d

Z

Z

Z

Z iP

Z iP

Z eP

PEZ eR

Ha

Na

Hi

M

A

U

U

C&GS card 49-63:

09:19:54.8

50.8° N., 129.5° w.

Vancouver Island region

h about 33 km

Magnitude 4.4 (CGS).

M Z Tmax 10:05:34

A Z Tmax 10:06:02

D Z Tmax 10:05:58

MP Z Tmax 10:05:48

U Z Tmax 10:05:55

Pa Z Tmax 10:05:51

Hi Z Tmax 10:05:23

Ha Z Tmax 10:04:58

C&GS card 48-63:

06:39:04.0

55~jO S&, 146.1° E.

800 km west of Macquarie Islands

h about 18 km

Magnitude" 6.25-6.5 JPas),

6.25-6.5 '(Pal),

6.0 (CGS),

6.6 (HVO).

June 16

June 17

M

D

MP

U

Hi

Ha

U

U

Z iP

Z iP

Z eP

Z eP

Z eP

Z iP

PEE eL

PEZ eR

18:40:05.7 c

06.8 c

08.2 c

06.2 c

04.5 c

18:39:58.7 c

18:49:57

18: 51: 53

C&GS card 49-63:

18:32:14.5

60.4° N., 140.8° w.

29
Table 5.--Distant earthquakes--Continued

June 24, 1963 June 24

M Z iP 04:34:12.0 d M Z iP 15:08:51.9 d

A Z iP 13.5 d A Z iP 51.7 d

• D Z iP 13.8 d N Z iP 52.1 c

MP Z eP 13.6 d MP Z eP 51.0 c

U Z iP 13.1 d Na Z iP 47.8 d

Pa Z eP 10.0 c Hi Z iP 53.9 c

Na Z iP 16.8 c Ha Z iP 56.7 c

Hi Z iP 11.1 c

Ha Z iP 01.6 d C&GS card 53-63:

U FEZ iP 13 d 15:01:44.2

U PEZ iPP 04:35:41 d 15.5° S., 177.5° w.

u PEZ iPPP 04:36~25 d Fiji Islands region

U PEZ iR 04:44~54 h about 412 km

TT PEE is 04:40:20 Magnitude 5.0 (CGS).

U PEE iL 04:43:04

Ha Z Tmax 05:12:41 June 24

C&GS card 46-63~ M Z iP 16:24;08.4 d

04:26:37.9 M Z iPP 16:25:21.0 d

59. 5° N., 151.7° w. A Z eP 16:24:08.7 d

Cook Inlet U Z ePP 22.7 d

h about 52 km U PEZ is 16:29:39

Magnitude 6.75 (Pas), U PEZ iR 16:33:13

5.7 (CGS), Ha Z Tmax 16:59:36

6.5 (HVO).

C&GS card 49-63:

June 24 16:17:15.4

52.3° N., 171.2° w.

M Z Tmax 11:04:19 Fox Islands region

A Z Tmax 10 Aleutian Islands

D Z Tmax 30 h about 33 km

MP Z Tmax 17 Magnitude 5.4 (cGS), 5· 5 (HVO).

U Z Tmax 12

Pa Z Tmax 12 J1ll1e 25

Hi Z Tmax 11:03:53

Ha Z Tmax 11:03:23 Ha Z Tmax 09:06:41

C&GS card 52-63: C&GS card 52-63:

10:17:02.5 08:26:21.9

52.8° N., 131.9° w. 44.3° N., 129.1° w.

Queen Charlotte Islands region off coast of Oregon

h about 38 km h about 31 km

Magnitude 3.9 (cas). Magnitude 405 (cas).

30
June 25, 1963

Table 5.--Distant earthquakes--Continued

June 28--Continued

C&GS card 50-63:

09:39:28.4

44.3° N., 129.1° W.

off coast of Oregon

h about 32 km

Magnitude 4.5 (CGS).

Ha Z Tmax 10:19:36 C&GS card 50-63:

21: 55: 38. 8

46.5° N., 153.2° E.

Kuri1e Islands region

h about 33 km

Magnitude 6.75 (Pas),

6.1 (CGS),

7.0 (HVO).

June 26 June 29

C&GS card 54-63:

12:43:47.5

11.6° N., 142.7° E.

Mariana Islands region

h about 30 km

Magnitude 5.2 (CGS).

A Z eP 17:54:03.2 c

D Z eP 02.2 c

U Z iP 03.7 d

Pa Z eP 05.9 d

U PEN is 18:03:27

U PEN iG 18:12:45

U PEZ iR 18:15:39

C&GS card 50-63:

17:42:40.6

7.1° N., 82.3° w.

near south coast of Panama

h about 20 km

Magnitude 6.25-6.5 (Pas),

5.5-5.75 (Pal),

6.0 (eGs), 6.2 (HVO).

June 27

U PEZ eR 07:28:08

Ha Z Tmax 07:59~00

C&GS card 50-63:

07:08:01.7

60.5° N., 140.7° W.

Yukon territory

h about 29 km

Magnitude 4.6 (CGS).

June 28

u Z eP 22:04:22.6 c

Pa Z iP 2206 c

Hi Z iP 22.7 c

Ha Z eP 21.3 c

U PEZ iP 23 d

u PEZ iPPP 22:06:44

U PEZ iSSS 22:17:56

U PEE is 22:11:44

U PEE isSS 22:16:16

M

U

Pa

Z

Z

Z

iP 12:53:54.5 d

eP 54.6 c

iP 56.7 d
The following persons or agencies reported "felt" earthquakes during

the second quarter, 1963. Their assistance is gratefully acknowledged,.

l

...

North Hawaii

Mrs. Eklund

Mrs. Lindsey

Puuanahulu School

Miss Wallace

Kilauea summit region

Mrs. Hansen

Mrs. Mist

Mrs. Wentworth

Mrs. Cuskel.ly

KMC residents

Mr. Ryall

Mrs. Yong

Mrs. Hirano

Miss English

Kona coast

Mr. B. Berman

Mr. Ladd

Puna

Mr. Edwards

Central Hawaii

Kulani Honor Camp

Hilo region

Mrs. Shoemaker

Mr. S. Ho

Mr. Baldwin

:tv'fJ.ss Patten

Mrs. Carter

Kau region

Mr. Mizuba

Kau Police station

Kahuku Ranch

Lt. C. Araujo

Mr. Godfrey

Kapapala Ranch residents

Mrs. Billings

Mrs. Walters

Mr. Meinecke

Mrs. Schattauer

32
UNITED STATES

DEPARTmlT OF THE INTERIOR

GEOLOGICAL SURVEY

HAWAIIAN VOLCA11"O OBSERVATORY

SUMMARY 31

July, August, and September, 1963

By

Robert Y. Koyanagi, Arnold T. Okamura,

Willie T. Kinoshita, J,e G. Moore, and Howard A. Powers

Issued December 1964

Observatory Staff

Geology

J. G. Moore (Scientist-in-charge)

D~ L. Peck, geologist, arrived 7-5-63

C. K" Wentworth

Geophysics:

W~ T. Ki.noshita, geophysicist,

arrived 6-17-63

G. Kojima

R. Y. Koyanagi

H" L. Krivoy A~ T.. Okamura

A. S. Ryall

N. Sherrill

Geochemistry:

R. T. Okamura

Support:

E. T. Endo

J. G. Forbes

W. H. Francis

B. J. Loucks

A. Yamamoto

Visiting Japanese scientists

(Arrived 6-29-63 for 6 months'cooperative program)

T. Minakami (Group leader), D. Shimozuru, S. Aramaki, T. Miyazaki,

C. Kurihara, and S. Hiraga
•

Contents

Page

U.S.-Japan cooperative study of Kilauea Volcano------------------- 1

Chronological summary--------------------------------------------- 3"

Tilting of the ground around Kilauea caldera---------------------- 8

Seismic summary--------------------------------------------------- 14

Persons or agencies reporting felt earthquakes during the quarter- 40

Illustrations

Figure A. Map of the Kilauea caldera region at the summit of

Kilauea Volcano-------------------------------------- 2

B. 1963 faults and cracks along the Koae fault system of

Kilauea's south flank mapped by James G. Moore------- 4

c. Hourly frequency plot of Kilauea seismic events

during August 3-5, 1963------------------------------ 5

1. Map of the island of Hawaii showing seismograph

stations operated by the Geological Survey and

localities mentioned in the text--------------------- 7

2a. Tilting of the ground around Kilauea caldera May 12

to July 4, 1963-------------------------------------- 11

2b. Tilting of the ground around Kilauea caldera,

July 6 to August 6, 1963----------------------------- 13

Tables

Table 1. Tilt coordinates at Uwekahuna Vault, July, August, and

September, 1963-------------------------------------- 9

2a. Tilt coordinates and changes at bases around Kilauea

caldera---------------------------------------------- 10

2b. Tilt coordinates and changes at bases around

Kilauea caldera-------------------------------------- 12

3. Numbers of earthquakes and minutes of tremor recorded on

seismographs around Kilauea caldera------------------ 15

4. Local earthquakes recorded by seismographs of the

U.S. Geological Survey------------------------------- 20

5. Distant earthquakes------------------------------------- 30
U.S.-Japan cooperative study of Kilauea Volcano

For 6 months, beginning in the summer of 1963, a team of ~apanese

scientists lived and worked at Kilauea Volcano in close cooperation with

the staff of the Volcano Observatory. This study was part of a program

of scientific cooperation between the United States and Japan; the program

originated in talks between President Kennedy and Prime Minister Ikeda in

June 1961. The United States' participation is financed by the National

Science Foundation and Japan's participation by the Japanese Ministry of

Education.

The main group of Japanese scientists which arrived in Hawaii June 29,

included Takeshi Minakami, Professor of Geophysics, University of Tokyo,

leader; Daisuke Shimozuru, Assistant Professor of Geophysics, University

of Kyushu; and Shigeo Aramaki, Assistant in Geology, University of Tokyo.

Kosuke Kamo, Geophysicist, University of Kyoto, joined the team later.

Several technicians accompanied the group.

The principal program of the Japanese scientists was the monitoring

of seismic activity in the Kilauea summit area. To do this, a net of

about 16 short-period seismometers (mainly vertical instruments) was

placed in and near Kilauea caldera in the summit region of the volcano

(fig. A). The instruments telerecorded at the Observatory. Six

instruments recorded continuously on smoked paper drums and the others

recorded a few hours per day (or longer during periods of exceptional

activity) on photographic paper.

While the team was in Hawaii, seismic recordings were made of several

noteworthy events: earthquakes and tremors associated with the eruptions

of August and October; the collapses of July and August; several other

large earthquakes and earthquake swarms; and explosions set off as part

of the Geological Survey's program of refraction seismology.

The Observatory staff joined with the Japanese team in an offshore

investigation of the south flank of Kilauea Volcano. The Kagoshima Maru,

a 1,OOO-ton fisheries research vessel from Kagoshima University, which

was on a training voyage in Hawaiian waters, was utilized in a 4-day

echo-sounding program in August. The ship made about 400 km of depthprofiling traverses over a submarine part of Kilauea Volcano directly south

of the summit region. Observatory members sailed on the ship and aided

in the operation of the echo-sounder, and members of the Japanese team

joined the Observatory staff in fixing the position of the ship from

three transit stations on land.

The first data-gathering stage of the U.S. -Japan cooperative program

was completed in early 1964 when the Japanese team left Hawaii. The

second stage--analysis of the data--will continue for 2 years. Results

will be compared and data integrated at future meetings, terminating in

the fall of 1965.

J. G. M.
1t

/' ././

/'

/

/

/

/

/

/

/

/

/

/

/

./'

©) //

/

/

/

/

2 4 MILES I

Figure A.--Map of the Kilauea caldera region at the summit of

Kilauea Volcano. Locations of seismometers operated by

visiting Japanese team are shown by double circles.

2
Chronological summary

The month preceding the opening of this quarter was exceedingly

quiet in terms of any kind of seismic activity, and no clear trend of

tilting was indicated by the short-base tiltmeter. However, during

this quarter there were two episodes of su~mit collapse, two swarms

of Kaoiki quakes, and two surface eruptions of lava (if we include the

first week of October in the period of generalization).

A shar~ spasm of seismic activity that began at 9:50 p.m. July 1,

1963, included a great many felt earthquakes, a countless swarm of

small quakes, and probably intermittent tremor. Rapid collapse tilting

began at Uwekahuna shortly before midnight, and at about the same time

cracks opened and pavement buckled in the road at Devil's Throat

(fig. B). This structural crisis was over by July 5 and no lava had

appeared at the surface. However, the Kilauea summit showed about the

same amount of tilt collapse as it had shown during the December 1962

eruption along the upper Puna rift. Also upward swelling in part of this

rift, as determined by precise leveling of the bench marks along the

Chain of Craters road, was as much as 3 feet in the center of the disturbed

zone. From these observations it is inferred that strong structural

disturbance along the Puna rift and its junction with the Koae fault system

permitted the movement of perhaps 10 million cubic yards of magma from under

the summit region into the Puna rift system.

During the rest of July, tilting at Uwekahuna was moderately strong

westerly, a direction associated with tumescence, but there was no

noteworthy seismic activity.

On August 3, shallow tremor began at 9:25 p.m. and continued,

accompanied by a swarm of shallow earthquakes centered near Aloi that

began 15 minutes later. The quakes were felt only feebly in the

Kilauea summit area 6 miles northwest, but their intensity caused

concern at Ainahou Ranch 2 miles south of Aloi. The seismic crisis

lasted only about 2 hours, but several new cracks intersected the

Chain of Craters road, and leveling revealed surface subsidence of a

2-mile section of the road) greatest (.4 ft) in the zone of cracking.

A swarm of 30-km-deep quakes under the Kilauea summit followed the

surface crisis by a few hours (fig. C ).

There was comparative inactivity, both seismically and tiltwise,

until August 21. On that day lava appeared, at about 6:00 p.m., from

fissures across the floor and up the northeast wall of Alae Crater. The

eruption lasted about 38 hours and formed a lake in the crater bottom

containing almost a million cubic yards of tholeiitic basalt. Careful

study of this lava lake was started immediately for the purpose of

observing all aspects of the cooling history of the lava.

On August 26 at 8:49 a.m., an earthquake of magnitude 4.9 took

place in the Kaoiki fault zone. The shock was felt strongly throughout

the island of Hawaii. Aftershocks numbered about 50 per day for

several weeks to follow. Two of the earliest of these were felt in the

Kilauea summit area: one of magnitude 3.1 at 09:48, August 26, and one

of magnitude 3.3 at 21:35, August 26.

3
t

Historic eruptive vent showing y

Prehistoric eruptive vln t.

Crocka ond foults of 1963. Tho

werl formed on Moy 9-11; thos. e

Crocks and fault.. Boll denot.. 

normal faults. Circular faults ar

not shown.

1

Contour int.nal 100 fttt

005

,

o

I

--- ...,...--

\"jJoo .

....... ; ...-

Figure B. --1963 faults and cracks along the Koae fault system on Kilauea's south flank m

by James G. Moore (see also Summary 30).
..

30

. J KILAUEA SEISMIC

for AUGUST 3- 5,

FREQUENCY

1963

I!O

10C

90

<I) 80

§ 70

()

..... ·60

<:)

30

20

10

o

30- Km. Deep quakes

Upper East Rift - East Koae

Fault quakes

Figure C.--Hourly frequency plot of Kilauea seismic

events during August 3-5, 1963.

5
A second swarm of Kaoiki quakes was initiated by an earthquake

of magnitude 4.8 that took place at 6:24 a.m. on September 21. This

quake also was felt throughout the island. Two of the many aftershocks

were felt throughout the southern half of the island: one of magnitude

3.5 at 06:26, Septo 22, and a second of the same magnitude one minute

later at 06:27_

Large numbers of small quakes centered under Kilauea summit

accompanied the numerous aftershocks from the Kaoiki fault zone until the

end of the quarter, in fact lmtil the beginning of a flank eruption at

Napau Crater on October 4, which will be reported in the next quarterly

summary_

6
20' --+------I

EXPLANATION

6 S.'.movraph Station

• Town or locality

to II ......

10 16 10 II lC......t."

Contour int.rval 1,000 f••t

D.tull'l i '

To'o....'... b. us G le., Sun.,

Laupaho.ho.-----t-------- 10'

,----------------------t-----------I.'

lei!~'

Figure l.--Map of the island of Hawaii showing seismograph stations

operated by the Geological Survey and localities mentioned in

the text. Epicenters of local earthquakes are given in terms

of geographic coordinates, which are indicated at the edges of

the map.

7
•J

Tilting of the ground around Kilauea caldera.--Tilting of the ground

around the summit of Kilauea is monitored daily by a short-base water-tube

tiltmeter in Uwekahuna Vault, and at irregular intervals it is measured on

a regional scale by means of a network of field tilt bases and a portable

water-tube tiltmeter. The attitude of the ground surface at each tilt base

is reported in terms of north-south and east-west tilt coordinates. Both

coordinates at each station were arbitrarily set equal to 500 when measurements at that station were begun. Increasing tilt coordinates correspond

to northward and eastward tilting of the earth's surface, i.e., to a

relative subsidence toward the north and east. A one-unit change in

coordinate corresponds to a tilting of 1 microradian (1 mm per km) in

the direction indicated.

8
Table l.--Tilt coordinates at Uwekahuna, Vault, July, August,

and September, 1963

Date N-S E-W Date N-S E-W

June 30 505 497 Sept. 1 503 491

July 7 498 504 8 504 494

14 499 504 15 505 490

21 502 499 22 505 482

28 502 495 29 505 476

Aug. 4 502 492

11 501 492

18 503 488

25 501 1+94

9
r--

o

Table 2a.--Tilt coordinates and changes at bases around Kilauea caldera (see 

Tilt base Date Tilt coordinates Rate (10-6 rad/mo) 

(location) (1963) and direction of 

N-S E-W tilting since 

last reading 

Uwekahuna July 6 478.6 488.2 5.0 N. 42.5° w. 

(19°25.5' N. , 155°17.4' w.)

Tree Molds 4 452.6 512.9 0.67 s. 24.3° E. 

(19°26.3' N. J 155-17. 3' w )

Sand Spit 6 824.3 725.5 9.6 s. 70.2° E. 

(19°24.1' N., 155°16.8' w.)

Ka1ihipaa 3 349.2 387.5 127.8 s. 18.3° w. 

(19°21.4' N. , 155° 15. 3' w.)

Keamoku 4 531.2 552.4 9.5 N. 44.9° w. 

(19°25.1 ' N. , 155°19.0' W.)

Ahua Kamokukolau 3 521.1 548.3 52:9 N. 22.1° w. 

(19°2?I' B., 155°16.6 1 w.)

Kipuka Nene 5 486.8 510.3 6.5 s. 16.0° E. 

(19°19. 4' N., 155°16.7' W.)

Hi1ina Pa1i not occupied this epoch

(19°18.2' N., 155°18.6' w.

Kapapala Ranch not occupied this epoch

(19°20.5' N., 155°23.8' w. 
Cl

o

• M

MAY 12, 1963 - JUL 4, 1963

/ I I

/ 5KM

Kap

•

i

\

Figure 2a.--Ti1ting of the ground around Kilauea caldera, May 12 to

July 4, 1963. The vector depicting tilting at a given tilt

base points in the direction of maximum relati 1 re subsidence and

has a length proportional to the rate of tilting during the

measurement interval. Closed circles represent field tilt bases;

open circles, short-base water-tube tiltmeters.

11
....

I\)

Table 2b.--Tilt coordinates and changes at bases around Kilauea caldera (see 

-6

Tilt Base Da.te Tilt coordinates Rate (10 rad/mo) 

(location) (1963) and direction of 

N-S E-W tilting since 

last reading 

Uwekahuna Aug. 6 486.8 480.5 .11.3 N. 43° w. 

(19°25.5' N. , 155°17.4' W.)

Tree Molds 6 457.0 515.8 4.8 N. 33° W. 

(19°26.3' N. , 155°17.3' W.)

Sand Spit 12 821.4 727.0 2.6 s. 26° E•. 

(19°24.1' N. , 155°16.8' w.)

Kalihipaa 5 336.1 377.8 14.8 S. 37° w. 

(19°21.4' N. , 155°15.3' W.)

Keamoku 12 536.9 544.7 6.8 N. 54° w. 

(19°25.1' N. , 155°19.0' W.)

Ahua Kamokuko1au 5 528.1 555.7 9·3 N. 47° E. 

(19°22.7' N., 155°16.6' w.)

Kipuka Nene 9 484.8 510.1 1.7 s. 06° w. 

(19° 19. 4' N., 155°16.7' W.)

Hi1ina Pa1i 8 497.5 500.7 1.4 s. 17° w. 

(19° 18. 2' N., 155°18.6' w.)

Kapapa1a Ranch 8 496.9 503.5 0.3 s. 24° E. 

(19°20.5' N., 155°23.8' w.)
cr

o

\

(

(

f

\

\

• M

•

Fi g11re 2b. --Tilting of the ground around Kilauea caldera, July 4 to

August 6, 1963. The vector depicting tilting at a given tilt

base points in the direction of maximum relative subsidence and

has a length proportional to the rate of tilting during the

measurement interval. Closed circles represent field tilt bases;

open circles, short-base water-tube tiltmeters.

13
Seismic sun~ary.--Events recorded by the U.S. Geological Survey

seismograph network in Hawaii fall into two categories: local earthquakes

and tremor originating in the region of the Hawaiian Islands, usually

within 100 km of at least one seismograph, and distant earthquakes

originating more than 3,000 km from Hawaii. As an index of seismic

activity at Hawaiian volcanoes, daily counts of earthquakes and minutes

of tremor recorded by seismographs in Hawaii are listed in table 3.

The earthquakes are separated into groups on the basis of region of

origin as determined by analys~s of records obtained daily at the

Observatory (U, M, A, D, N,MP). Earthquakes of magnitude 2.5 or

greater are generally sufficiently well recorded to be located with

greater precision: they are listed individually in table 4. Data on

identifiable phases from distant earthquakes are listed in table 5.

Locations of the seismograph stations are shown on figure 1,

and essential data on the stations were given in Summaries 25 and 30.

14
Table 3.--Numbers of earthquakes and minutes of tremor recorded on seismographs

U, M, A, D, N, and MP around Kilauea caldera

Tremor is separated into three categories: deep, intermediate, and shallow, on the basis 

a.mplitudes on seismographs in the summit region. Unless otherwise stated, tremor is p

be associated with movement of magma within the central complex of Kilauea.

Earthquake categories are: Halemaumau rock slides, which are detected by the character

produce on the North Pit seismograph; shallow earthquakes in the Kilauea caldera regio

earthquakes along the SW. rift zone of Kilauea and the adjacent portion of the Kaoiki 

earthquakes along the eastern half of Kilauea's east rift zone--detected largely on th

period vertical; earthquakes from a source about 30 km beneath Halemaumauj earthquakes 

east rift zone and the adjacent fault systems of Kilauea's south flank (these are usu

at Ahua or Ma.kaopuhi); and earthquakes from other regions: Kona, Mauna Kea, etc.

"Kalapana Trail" quakes formerly listed as collJ.mn 9, have essentially ceased and are thu

A question mark (?) in the colUlnn indica.tes questionable interpretation of the records d

tration of seismic activity or an instrumental problem.

Tremor

Date (in minutes) Earthquakes \J1

(1963) Inter- Hale- Kilauea SW. rift Eastern Ha1e- Upper

Deep mediate Shallow maumau caldera and East maumau East 

slides Kaoiki rift 30 km rift

July 1 ------ ------ 25 10 6 ?

2 ? ? ? ? ? ? 1 900+ ---

3 ? ? ? ? ? ? ------ 600+ 1 s

4 ------ ------ 34 ? 5 275+ 2 K

5 ------ ------ 30 - ----- 1 2 65+ ---

6 ------- ------ 29 ------ 1 1 38 1 O

7 ------ ------ 31 8 1 33 ---

8 ------ ------ 1 32 11 1 12 ---

9 ------ ------ 3 49 19 6 13

10 ------ ------ 35 3 14 16 1 M

11 ------ ------ 23 20 6 10 ---

12 ------ ------ 32 5 3 5 ---

13 12 ------ ------ 30 9 11 2

14 ------ ------ 60 11 2 6 8

15 ------ ------ 80 8 11

16 ------ ------ 37 30 2 1 ---
•

Table 3.--Numbers of earthquakes and minutes of tremor recorded on seismographs

li, M, A, D, N, and EE around Kilauea caldera--Continued

Tremor Earthquakes

(in minutes)

Date

(1963 ) Inter- Hale- SW. rift Eastern Hale- Upper

Deep mediate Shallow maumau Kilauea and East maumau East 

slides caldera Kaoiki rift 30 km rift

July 17 42 ----- ----- ----- 60 3 -_ .... _- 1 3

18 ---- ----- ----- ----- 50 10 5 7 1 

19 ---- ----- ----- ------ 50 17 ----'- 21 3

20 ---- ----- ----- ----- 45 5 ----- 3 3 1 

1 

21 ---- ----- ----- ----- 60 10 ----- 3 10 1 

22 _... -- ----- ----- 1 41 11 ----- 5 8

23 ---- ----- ----- ----- 46 21 ----- 3 3 1 

1 

24 ---- ----- ----- 1 70 5 ----- 2 6 2 

25 ---- ----- ----- ----- 46 11 ----- 2 3 -

26 ---- ----- ----- ----- 45 6 1 7 4

27 ---- ----- ----- ----- 50 8 .. 4 3 -

28 ---- ----- ----- ----- 64 16 ----- 8 1 1 

29 ---- ----- ----- ----- 90 30 ----- 2 ---....

30 ---- ----- ----- ----- 60 18 ----- 5 ---- 1 

31 ---- ----- ----- ----- 100 25 ----- 11 -

Aug. I ---- ----- 8 -----. 65 9 ----- 9 1 -

2 ---- 37 ----- ----- 70 8 1 9 ---- -

3 50+- ----- 2 50 13 ----- 53 200+ 1 

4 ---- ----- ? ----- 37 12 ----- 71 3 1 

1 

" 5 13 ----- ----- ----- 48 12 ----- 9 5

6 -_ ... - ____ -=:P ----- 44 14 ____ e- 4 2

7 46 ----- ----- ----- 94 18 -_ .... -.- 8 7 1 

8 3 ----- ----- ----- 40 9 ..-_ .. 21 1
•

Table 3.--Numbers of earthquakes and minutes of tremor recorded on seismographs

U, M, A, D, N, and EE around Kilauea caldera--Continued

Tremor

(in minutes) Earthquakes

Date

(1963) Inter- Hale- SW. rift Eastern Hale- Upper

Deep mediate Shallow maumau Kilauea a,nd East maumau East 

slides caldera Ka.oiki rift 30 kIn rift

Augc 9 ---- --.--=--- -------=-- ____ aD_- 50 7 IIIE:S ____ 2 4

10 _-.-- -.. ...--- ... _- 75 5 ---- '-f) 4

11 --- -- -=..., _ ... - ------ 60 11 ... _ 7

12 ---- ----- 3 81 11 5 5

13 ---- ----- ------=-- ----- 73 7 ------ 1 17

14 -_ ... - ----- ------ ----- 85 5 ---- 1 1 

15 ---- ----- ------ ----- 80 6 ---- 2 6 1 

16 ---- ----- ------ 1 80 6 ---- 1 4 -

17 ---- ----- -=------ ------ 88 6 ---- 4 -----

18 ---- _.... _-- ------ ----- 91 6 ---- 4 6 -

19 2 ----- ------ ----- 96 6 ---- 2 8 -

20 3 ----- ------ ----- 105 8 ---- 1 7

21 Eruption starts at 18:00, 50+ 13+ ----- ---- 675+ -

22 continuous Eruption 12+ 5+ _... _- ? ?

23 ends 08:10. 30+ 2+ 1 3 ?

24 ---- ----- ------ ------ 35 5 ---- 2 4 1 

25 ---- ----- ------ ----- 42 14 ---- 5 3 1 

1 

26 ---- ----- .-.----- 1 70 375+ ---- 1 ----- -

27 38 ----- ------ 4 63 85 ---- 5 2 1 

28 ---- ------ 1 92 83 ---- 4 ----- 1 

1 

29 ---- _.. ------ ----- 60 23 ----- 8 -----

30 4 ____ lIS- ------ ------- 50 31 -_ ... - 5 1 -

31 ---- ----- ------ -_ ... _- 75 32 2 15 ------ 1 
.. •

Table 3.--Numbers of earthquakes and minutes of tremor recorded on seismograph

U, M, A, D, N, and EE around Kilauea caldera--Continued

Tremor

(in minutes) Earthquakes

Date

(1963) Inter- Ha.le- SWc rift Eastern Hale- Upper

Deep mediate Shallow maurnau Kilauea an.d East maurnau East 

slides caldera Kaoiki rift 30 km rift

Septe 1 14 ------ ____ ca 70 35 1 9 1 

2 ... ----- 80 35 ---- 5 8

3 ---- .----- _c. ___ ----- 102 77 ---- 3 2

4 -- _.... - ------ ----- ------ 53 20 ---- 9 ------ 

5 ... --- ----- ----- ----- 65 30 ---- 2 1 

6 -- -..- ----- ----- 1 50 30 ---- 2 2 

7 ---- - ------ ----- 1 60 30 ---- 7 2 

8 ----- ------ _-.--- ------ 60 42 ---- I 3 

9 ---- ----- 9 ----- 69 35 ---- 7 2 

10 15 ---_ ... ----- ----- 120 24 1 19 ----- 

11 ---- ----- ----- ----- 71 22 ---- 4 ----- 

12 4 ----- ----- 1 60 24 ---- 2 5 

13 30 ----- ----- ----- 85 8 ---- I 5 

14 ... ----- ----- ----- 110 28 \ 2 1

15 ----- ----- ----- 75 27 ---- 7 2 

16 ... --- ----- ----- ----- 120 32 ----- 4 2 

17 32 ----- ----- 1 150 33 ---- 7 6 

18 ---- ------ ----- ----- 115 44 1 5 4 2 

19 ---- ----- ----- 1 170 48 ----- 7 5 

20 ---- ----- ----- ----- 85+ 75 1 2 ----- 

21 26 _..---- ... ---- 2 155+ J-960 3 --.._- 2 

22 --=-'--- 2 120 1300 2 1 -- -- -=-- c:..
, •

Table 3.--Numbers of earthquakes and minutes of tremor recorded on seismograph

U, M, A, D, N, and EE around Kilauea caldera --Continued

Tremor

(in minutes) Earthquakes

Date

(1963 ) Inter- Hale- SW. rift Eastern Hale- Upper

Deep mediate Shallow maumau Kilauea, and East maumau East 

slides caldera. Kaoiki rift 30 km rift

Sept. : 23 -=-_ .. - ----- _.a __ -== 1 130 740 5 4 4

24 e- ___ ----- ----- ----- 190 580 7 8 12 

25 ---- ... 200 305 ---- 1 9 

26 ---- _&.aI «-. _., __ 200 160 7 3 10

27 20 _e. ___ ----- ------ 170 120 7 4 11

28 ---- ----=-- c= ___ ----- 160 135 4 ----- ----

29 72 ----- 1 185 130 ---- 5 

30 ---- ... _--- --.._- ------ 185 95 _e. __ 2 9
Table 4.--Local earth uakes recorded b

July,

,

ical Su

Entries for a given quake are: date, origin time (Hawaiian Standard Time), epicente

and felt report. Except for smaller earthquakes of special interest, only earthqu

magnitudes of 2.5 or greater are included in the list.

In the following list, some orlgln times are followed only by "KM 30" and a stateme

These are all members of a continuing family of quakes noted also in other Summa

mean focus for this group is beneath Halemaumau at a depth of 30 ki1ometer$ {19°2

w. ).

In the following list a number of quakes are described as "Upper east rift" {see Su

statistical study of this group which occurs in the swarm periods during July 1 to 

gives a mean epicenter 19°21.5' N., 155°14' about 2 km south of Aloi Crater at 

depth.

In Summary 24, "Kaoiki H was introduced as a symbol for listing any of a family of q

focus 19°24' N., 155°25' W., h=3 to 8 km. This symbol is used in the following l

I\)

0

Date Time Magni- Depth Epicenter 

(1963) tude \km) 

h m s Lat. N. Long. w. Description

July 1 08 39 20.7 2.4 ____ c.l ___ --------- Upper east rift------- 

1 08 40 54.4 2.6 ___ a. ____ ---------- ----do---------------- 

2 06 06 54.1 3.0 -----... _- --------- ----do---------------- 

2 06 18 22.9 2.9 -------- ---------- ----do----------------

2 06 41 05.7 3.0 -------- --------- ----do---------------- 2 06 47 43.4 3.2 -------- --------- ----do---------------- 

2 07 15 23.4 2.7 -------- --------- ----do---------------- 

2 07 37 30.1 2.9 -------- --------- ----do---------------- 

2 07 41 23.4 2.8 -------- --------- ----do---------------- 2 07 07.5 2.9 ____ ca_-=-_ 2 08 08 2809 2.7 ___ -=' __ ca_=_ ES ___ E:2 ____ 2 08 22 09.4 2.7 _ lQIIc. _____ E:= _____ e--=- _ 2 08 45 30.6 2.5 ___ ___ 2 09 37 37.1 3.1 -=--------- 
•

Table 4e--Local earthquakes recorded by seismographs of the UoS. Geological Surve

July, August, and September, 1963--Continued

Date Time Magni- Depth Epicenter 

(1963) tude (km) 

h m s Lat. N. r.. Long. w. Description

- - -

July 2 09 46 11.0 3.3 -------- --------- Upper east rift---------

2 10 00 25.3 3. 5 -------- ---do-------------------

2 10 17 10.4 3.0 -------- --------- ---do------------------- 

2 11 18 38.8 2.0 -------- --------- ---do------------------- 

2 11 23 55.8 2.4 -------- --------- ---do------------------- 2 11 36 01.8 2.0 -------- --------- ---do------------------- 

2 11 49 51.7 2.8 -------- --------- ---do------------------- 

2 11 55 51.1 2.0 -------- --------- ---do------------------- 

2 13 16 24. 3 3.0 -------- _____ 1:.» ___ ---do-------------------2 13 19 17.8 2. 9 -------- _______ CIII_ ---do------------------- 2 13 23 51.7 2.7 -------- --------- 2 14 29 42. 3 3.1 -------- --------- ---do-------------------2 15 36 55.7 2.8 -------- ---..,----- ---do------------------- 

2 15 49 32.2 2.8 -------- ---------- ---do------------------- 

2 15 52 32·9 2.6 -------- --------- ---do------------------- 

f\)

\---I 2 15 57 12.8 2. 3 --------- ---_.-.-----

2 16 24 11.4 2. 3 ---------- 

2 17 51 13.4 2.1 5 19°19.0' 155°09' 8 km NE of Apua Point--- 

2 18 16 00.8 2.1 -------- ___ tIIC8 _____ Upper east rift---------2 18 35 34.7 2.4 -------- --------- ---do-------------------2 18 59 18.6 3.0 -------- -_ ..2 19 38 45.7 3. 1 ____ r.-_-=- ____2 19 45 39·7 2.4 _____ ..2 21 55 17.1 2.8 -------- ______

3 00 04 25.7 2. 3 _.- _____ .:3_ ---do-------------------

3 01 06 44.8 2.2 -------- ---do-------------------

3 02 56 19.4 2.7 -------- --------- ---do------------------- 3 03 58 23·2 2.1 --------- --------- ---do------------------- 

3 04 54 55.1 2. 0 -------- --------- ---do------------------- 3 05 41 28.3 2.6 -------- ---------3 06 16 27.2 2.7 -------- ---------
f\)

f\)

Table 4.--Local earthquakes recorded by seismographs of the U.S. Geological Surv

July, August, and September, 1963--Continued

Date Time Magni- Depth Epicenter 

(1963) tude (km) 

h m s Lat. N. Long. w. Description - - -

July 3 06 30 15·7 3.1 --- -------- --------- Upper east rift---------- 

3 06 37 31.7 2.0 --- -------- --------- ---do--------------------

3 10 11 36.4 2.3 --- ____ .a. ___ ---------- ---do--------------------

3 16 01 08.4 2.7 --- --------- ---do-------------------- 

3 16 28 53s4 2.0 --- ------..- --------- ---do--------------------

3 19 30 34.8 2.6 I--- ---do-------------------- ____ -a __ -=- ------... --3 20 31 51·5 2.5 --- -------- --=--------- ---do--------------------

4 00 12 50·9 3.3 --- -------- --------- 

4 05 03 40.4 2.3 --- --------.., __ c:. ___ __

4 06 45 18.0- 2e8 13 19°22.3' 155° 55. 6' 16 km SSW of Kealakekua

4 07 38 31.4 2.9 13 19°2503' 155°59.0' 13 km S"l of Kea1akekua---

4 08 04 11.1 2.9 --- -----=----- Upper east rift...... 

4 08 39 09·9 2.6 --- "'c.- _____ e:::tr..- -----=--..,--

4 10 52 12.7 2.4 --- -------- --------- ---do--------------------4 12 05 04.4 2.8 ---- .. __ _____ ---do--------------------

4 17 01 02.7 2.6 --- ---.,------4 17 55 57.4 2.8 --- --.... .. --------- ---do------=-------------

4 17 58 13.9 2.5 --- .. ___ CllE ___ ---------

4 20 06 26.7 2.0 --- -------- ---------4 20 07 13.0 3.0 --- --------- --------- 

5 03 19 27.2 2.5 --- -------- --------- IQ1 ..---

5 15 14 34.5 2.5 --- ... _-- Upper east rift----------

6 16 34 43.2 2.2 --- --=------

6 17 12 01.1 2.4 3 19°16.8' 13 km SW of Kalapana-----

7 01 42 19·0 208 --- .. _-- KM 

10 16 32 44.0 3.4 13 19°55.5' 155°28.8' 18 km SSW of Honokaa----- 

11 01 39 26.0 3.3 8 19°16.5' 155°16.2' 12 km S of Ahua 

seismometer.

11 02 43 57.5 3.8 3 19°15.2' 155°10.1' 3 km ESE of Apua Point--- 

14.7 

11 03 10 3.5 --- ------- _____ Upper east rift---------- 

11 11 29 19.8 2.5 --.- -------- ICM

12 21 36 1105 2.2 --- -------- -=--------- Upper east
Table 4.--Local earthquakes recorded by seismographs of the U.S. Geological S

July, August, and September, 1963--Continued

Date Time Mag11i- Depth Epicenter 

(1963) tude (km) - 

h m s Lato N. Long. w. Description

- -

July 14 08 10 16.0 2.6 --- -------- -------- Kaoiki----------------

14 22 54 54.7 2.6 --- -------- -------- ---do-----------------

15 22 44 10.3 2.6 --- -------- Upper east rift--------

17 18 43 36.0 2.3 --- -------- -------- KM 

18 11 27 46.0 3.3 8 19°22.0' 155°52.3' 18 km SSE of Kealakeku

18 16 28 51.7 2.4 --- ----- ---------- KM 30-----------------

19 20 12 36.5 2.5 --- -------- .._--- Upper east rift--------

20 00 03 21.2 2.7 13 20°04.0' 155°37.2' 10 km ENE of Kamuela

seismograph station.

20 11 2.6 43.5 203 --- __ .:2"" 

20 12 31 31.5 3.2 13 19°10.8' 155°36.9' 12 km of Naalehu--

21 17 24 02.0. 3.2 13 19°59.0' 2' 13 kIn SE of Honokaa---

23 01 37 01"10 ·2.8 3 18°59.0' 155°13.5' 32 krn SSW of Apu.a Poin

23 03 52 10.8 3.2 ---

____ __

cs

---_.-:------ KM 

23 01 38 12.6 2.7 13 19°50.9' 155°32.1 1 13 km ESE of Waikii---

24 19 18 03.5 2.7 3 19°36.9' 155°25.8' 14 km Nm.[ of l\'Ja1ll1a Loa 

seismometer.

25 16 18 15.5 2.8 13 18°57.5' 154°58.2' 41 km SSE of Apua Poin

25 18 19 36.1 2.7 13 19°45.0' 155°58.9' 27 km N1"'W of Kealakekua 

26 03 21 19.7 2.3 --- -------- --------- Kaoiki----------------28 03 32 1005 2.4 13 19°51.5' 155°38.2 1 2 km ESE of Waikii----

29 08 39 12.5 2.7 --- -------- ... Kaoiki----------------

30 04 32 54.0 2.4 8 19°47.5' 155°26.5' 34 km NNW of Mauna Loa 

seismometer.

Aug. 1 01 10 52.4 2.9 --- -------- KM 30-----------------

2 10 06 29·3 2.1 --- -------- --------- KM 30------------------

2 14 53 03.1 2.8 --- -------- KM 30------------------

2 17 55 00.4 2.0 --- -------- --------- Upper east rift--------
Table 4.--Loca1 earth uakes recorded b seismo ra hs of the u.s. Geo10 ieal Su

July, August, and September, 1 3--Continued

Date Time Magni- Depth Epicenter 

(1963) tude (km) 

£ m s Lat. N. Long. w. Description -

Aug. 3 06 41 22.0 2.6 8 18°44' 154°57' 64 km. SSE of Apua Point

3 23 21 02.5 2.0 --- ---------- -..... Upper east rift--------3 23 47 35.0 2.0 ..._- -..,------ .. ----do----------------- 

4 00 10 49.5 2.7 --- _.._----- .. .. _- ----do-----------------

4 00 54 11.7 2.3 --- -------- ..._-_ ..--- ----do-----------------4 01 13 48.1 2.3 --- --------- .. .._-- 1M 30------------------

4 01 39 54.9 2.0 --- -------- ....._----- Upper east rift-------- 

4 02 57 06.5 2.0 --- -------- -----_...- ----do----------------- 

4 03 45 53.0 2.3 3 19°18.8 1 5' 14 km WSW of Kalapana

4 07 17 40.5 2.0 ..._- ----_.-_- -------..... - Upper east rift--------

4 07 54 58.6 2.3 --- -_-.----- ----..-_... KM 30------------------

4 08 53 35.3 3.4 13 20°02.3' 155°18.8' 9 km NW of Laupahoehoe 

5 08 15 22.1 2.5 --- ---.----- ... Upper east rift--------

·7 07 54 23.0 2.9 13 19°45.9' 156°00.8' 7 km NE of Keahole Point

.8 16 13 55.2 2.2 --- --------- KM 30------------------

8 16 14 20.0 3.3 --- -------- ---_.-.--- KM 30------------------ 

8 22 04 14.1 2.1 --- c.- _______ ------._- Upper east rift-------- 

9 18 41 43.0 2.4 --- -------- -_..----- Kaoiki-----------------

10 04 10 08.0 2.5 --- ----.---- KM 30------------------ 

12 11 09 42.6 2.2 --- --------- Upper east rift--------

14 05 25 38.1 3.5 30 21°28' 158°06' Waianae Mountains near 

Koleko1e Pass, Oahu.

15 10 31 38.4 3.4 shallow 155°58.8' 11 km NW of Kealakekua 

15 11 01 19.0 2.3 --- -------- -------- Upper east rift-------- 18 16 40 41.3 2.2 --- -------- -------- ----do----------------- 

19 02 03 00.1 2.8 --- -------- IQ.1 30------------------ 

24 03 02 20.5 2.9 13 19°40.2' 156°02.9' 8 km SSE of Keahole

Point..

25 06 55 05.0 2.3 13 20°00.7' 155°49.8' SSE of Kawaihae--- 

25 22 41 43.0 3.1 13 21°23' 156°29' NNW of Haleakala, U1. 

25 23 35 45.0 2.3 --- -------- -------- KM 30--------- 

26 08 49 17. 6 4.9 --- -------- -------- Kaoiki----- ------ 
Table 4.--Local earthquakes recorded by seismographs of the U.S. Geological 

July, August, and September, 1963--Continued

Date Time Magni- Depth Epicenter 

(1963) tude (km) 

h m s Lato N. Long. We Description - - -

Aug. 26 09 48 23.3 3.1 ---- ---=------- ---------- 

26 15 24 38.2 2.2 .. __ 

26 18 17 0509 2.0 ---- 26 18 42 2.0 -=_ .... 

26 19 28 2cO --- ... - .-:l.., ... e:- ___ 

26 19 34 .'r"\ r-'7 2.0 ___ 

-!-oc. r

26 19 44 1997 .. _ ... _26 21 35 0000 _.-:_- 

26 22 17 3104 - ..... - __ -=- __ CZ' __ ..

27 02 20 04 0 2 2.2 - ..

27 13 13 2.9 1CK.-s..,_ __ CIIIt" 27 14 10 27.7 203 -=- c::a ___ ___ __ ... a-t_c-.WR

27 19 07 3006 2.9 8 19°2354' 155°36.4' 24 km 

Desert seismometer.

28 05 14 03c8 2.7 <3 19°2908' 155°56.o i 3 klTI s01.1thv.Test of 

Kealakekua. 

28 05 51 59.8 3.6 13 155°18.2 t 31 km east-sou.theast

of Naalehu.

29 01 06 43e4 2,9 ---- ..__ __ '.:' I<:M 30-------=---------29 21 10 40.4 2.7 _e:- __ -------- --------- :K14 30-- - - - - - - - - - - --- -

30 10 58 48.6 2.0 10 19°19.2' 155°12.8' 6 km southwest of

Makaopuhi seismomete

31 20 24 05.5 2.5 8 19°35.1' 155°53.9' 8 k! 

Kea a e ua

ept. 1 01 24 17.7 2.3 ---- -------- ---=----- 101 30----------------

1 11 31 15.1 3.3 3 19°11.9' 155°39.3' 17 km NW of Naalehu--

1 21 43 59g3 2.6 30 19°14.3' 155°21.8 i 11 km south-southeast

of Desert seismomet

2 10 05 38.4 2.2 ---- -=--------- Upper east rift-------

s

I\)

0\
f\)

\.Jl

Table 4.--Local earth uakes recorded b seismo raphs of the U.S. Geological Surve

July, August, and September, 3--Continued

Date Time Magni- Depth Epicenter 

(1963) tude (km) 

h m s Lat. N. Long. w. Description

- - -

3 12 54 30.6 3.6 --- -------- ____ cs _____ -.t 3 13 51 57.2 3·0 --- ______ .:::011_ _ _=:II ___ awc. 

3 17 17 39.7 2.1 --- .-., ..... _ .. c._ .. _..,.-- ..3 18 25 04.5 2·9 --- 

4 21 58 37e4 301 --- ca_.:._-=-_c:.1l-. --------- 

6 00 54 45.4 2.5 8 19°29.0' 155° 5305' 5 km SE of Kealakekua6 02 41 37.6 2.3 10 19°16.0' 13 km SSE of Ahua 

seismometer.

6 03 30 01.6 3.6 3 19°29.1' 156°02.9' 15 km WSW of Kealakeku

6 09 10 48.8 2.1 8 19°17.4' 155° 14.3' 10 km SW of Ahua 

seismometer.

6 22 47 53.0 2.6 5 19°28.3' 155°52.2' 8 km SE of Kealakekua 

7 05 07 40.0 2.2 --- -------- --,..;----- Kaoiki----------------

7 05 32 11.2 2.1 10 19°19.8' 155°11.8' 5 km SW of Makaopuhi 

seismometer.

7 12 01 18.6 2.9 13 20°48' 155° 12' 100 km NE of Kamuela-

7 18 04 17.4 2.1 --- _____ ___ m. ____ Upper east rift--------c

8 04 48 04.9 2.4 8 19°40.2' 156°05.8' 11 km west of Kai1ua-.

8 12 09 36.8 3.0 3 19°12.3' 155°34.8' 16 km north of Naalehu8 12 43 43.9 3.0 3 19°22.6' 155°54.1' 1 km south of Hookena

8 23 37 06.0 2.3 --- --------- --------- Kaoiki----------------

9 01 33 43.4 2.3 J-O 19°17.1' 155°09.3' 9 km SSE of Ahua 

seismometer.
Table 4.--Local earth uakes recorded b seismo raphs of the U.So Geolo ical Surv

July, August, and September, 19 3--Continued

Date Time Magni- Depth Epicenter 

(1963) tude (km) 

h m s Late Long. w. Description

- - -

10 00 21 23.8 2.0 10 19°20,,7' 155°17.0' 4 km SW of seismomet

11 08 00 39.5 ---- KM 

13 23 58 09·5 203 8 155°13.7' 5 km WNW of Apua Point---

15 02 22 58.3 2·9 5 19°1605' 155° 1206' 3 km 1lW of Apua Point-... --

15 02 50 48.6 2.7 ...--:- .... - ca ___ e-_.a-=:l c:;aCDc:.3 __ .m-==-., ... KM 

15 02 53 56.0 203 rw_ _"_ .. __ c:=- __ c._CS_ KM 

16 00 24 07.9 8 155°21.4' 11 km SSW of Desert 

seismometer"

16 20 34 11·5 3.8 13 18°48' 156°39' 100 km SW of 

17 13 25 25.8 5 19°2103' 155°17.2' ':{ km SW of .Allua seismoine

..J

17 14 12 17.4 2.8 13 19°21' 156°34' 73 km WSW of 

18 07 54 43.5 2.1 < 3 19°4802' 155°31.7 f 6 km north of Pohakuloa--

18 08 07 57.5 3.5 13 19°5009' 155°32.2' 11 km 110rth of Pohakllloa -- 

18 21 31 45.2 2e6 -=: _ e-_ 

18 21 33 44.7 2.3 -etwr- .. __ __ ... ,.. __ =-c.- 

18 21 50 33c2 2.2 __ 

19 06 23 23.7 3.4 3 19°28.3' 155° 5' 5 km SSE of Kealakekua---

21 00 17 3.1 13 20°27' 156025 ' 40 km SW of He1eakala 

seismometer.

21 00 19 05,7 2.5 13 19°53.1' 155°24.0' 8 km SW of Keanakolu 21 06 24 26.5 4.8 ---- -------- --------- Kaoiki------------------
Table 4.--Local earthquakes recorded by seismographs of the U.S. Geological Surv

July, August, and September, 1963--Continued

Date Time Magni- Depth Epicenter 

{1963 ) tude -(km) 

h m s , Long. w. Description -

,

-

Sept. 21 06 33 24.0 2.3 -------- -------- Kaoiki---------------

21 06 49 59.4 2."8 ----- -------- .-c _______ 

21 07 04 2.4 ... __ m. --------- -------- 21 07 40 27.4 2.2 ----- 21 08 38 23.3 2.3 ---- -------- -------- 21 08 46 2.4 ---- ---do----------------21 10 02 59.1 2.2 _cz __ -------- --=do----------------

21 18 49 43.7 2.3 ---- --= - ---- .... 

21 20 18 15.0 2.2 --=---- ---do----------------

21 23 19 11.0 2.3 ---- _-=s ______ -------- 22 06 26 17.4 3e5 ---- -------- 

22 06 27 24.4 3.5 --- .. .. ---_ ...--- Kaoiki---------------

22 07 33 23.2 2.3 ---- -. ... _----- Kaoiki---------------

22 17 16 33.4 2.2 ---- --------- --------- ---do----------------22 19 23 34.3 2.3 ---- -------- -------- 

23 21" 44 11.4 2.6 ---- -------- -------- ---do----------------

24 01 48 04.9 3.4 5 19°26c6' 154°57.1' 6 km south-southwest o

Pahoa. 

24 05 58 22.3 2.7 5 19°36.0' 155°2103' 4 km northwest of 

Keanakolu.

24 08 18 02.2 3.3 8 19°16.5' 155°53.3' 13 km south-southeast 

Hookena.

24 09 36 16.0 2.1 25 19°30.1' 155°05.3' 24 km south of Hi10

24 23 54 58.0 2.3 13 19°09.9' 154°59.1' 37 km south-southwest 

of Pahoa.

25 20 02 11.5 2.6 35 18°58.7' 155°25.1' 21 km southeast of 

Naalehu..

26 05 01 27.6 2.1 8 19°26.8' 154°57.0' 5 km south of Pahoa--
Table 4o--Local earth uakes recorded b seismo ra hs of the U.S. Geolo ·cal Su

July, August, and September, 19

Date Time Magni- Depth Epicenter 

(1963) tude (km) 

h in s Lat. N'. Long. Wo Description

- - -

Septl: 27 17 09 24c7 2c9 3 19°251)8' 154°5703' 7 km o

27 20 04 20cO 2.3 0= 0= -= ___ ___ 28 02 45 3309 3.0 3 19°2608 t 6 krn south of 

29 10 18 10.6 204 8 18°5802' 155°18.0\ 51 km south of

Uweka'huna

seiSffionleter c

30 08 28 10.0 2.4 5 19°26.9' 154°54.6' 7 km soutbeast of Paho
Table 5.--Distant earthguakes

[Times are reported in Greenwich Civil Time which is 10 hours faster than

Hawaiian Standard Time. A !tcn follo~wing the tirne of P indicates

compressional first motion.j a ndn indic:ates dilatational first motion.

Station symbols, locations, and instrumentation are presented in Summary

28. Magnitudes calculated from the Hawaii seismograms are followed by

(HVO). Location of epicenter, origin times, and focal depths, and

magnitudes reported by other institutions are taken from" "Preliminary

Determination of Epicenters" p'ublislled by t~he U.Se Coast and Geodetic

Survey]

°

July 10-....Continued

·U PEZ iP 49 d

U PEZ iR 05:45:31

U PEE is 05:39:02

U PF..N iL 05:43:26

C8~GS card 57-63:

17:06:38,,6

39.4° S., 174.9° E.

North Island, New Zealand

h abOll.t 189 km

Magnitude 6vo {cas).

J-u1y 14

M Z on 1..L 17:16:58.6 d

A Z iP 58.1 d

D Z on lJ.. 57.3 d

MP Z iP 58.1 d

U Z iP 58.3 d

Ha z Trnax 07:11:51

July 15

C&GS c8.rd 55-63:

05:22:57.1

46e3° N., 152.9° E.

Kurile Islands region

11 about 33 km

Magnitude 5.6 (cGS)

601 (HVO).

C&C1S card 57-63:

06:28:21.7

51.8° N., 176.8° w.

AndTeanof Islands, Aleutian Islands

h about 33 km

MB.gnitude 4.6 {cGS).

July 4, 1963

M Z eP 11:06:56.7 d

A Z eP 56.4 d

D Z eP 55.4 d

MP Z eP 56Q4 d

U Z iP 56.6 d

Pa Z iP 5801 d

Na Z iP 53113 d

Ka Z iP 5901 d

Hi Z iP 59.1 d

Ha Z iP 11:07:03.1 d

U PEZ iP 11~o6:56 d

U P~J is 11:13:59

C&GS card 54-63:

10:58:13.2

26.3° S., 177.7° We

Tonga Islands region

h about 158 km

Magnitude 6.75 (Pas)

6.75 to 7 (Brk)

6. 5 ~{CGS).

July 9

U PEZ eR °9:57=02

C&GS card 55-63:

09:24:33.3

8.5° N., 83.0° w.

• Costa Rica

Panama Border

h about 31 km

Magnitude 5.1 (CGS) .

July 10

M Z iP 05 : 31 :49 o~· d

N Z eP 5002 d

Pa Z eP 49<»7 d
Table 50--Distant earthquakes-~Continued

(Bks)

20:23:30 d

20:38:20

20:31:00

20:35:56

h abo'ut 33 km

~~gnitude 503 (CGS).

July 29

'U PEZ iP

U FEZ iR

U PEE is

U PEN iG

C&GS card 61-63:

20:14:07.3

30.20S., 177.3° w.

Kerrnadec Islands

h about 39 km

Magnitude 6.5 -6.75

5.7 (CGS)

6.5 (HVO).

July 24--Continued

08:49:4303 d

4500 d

44.3 d

44.1 d

44.3 d

09:39:39

18:56:45

19:16:33

19:22:11

eS

eL

eR

iP

eP

iP

eP

iP

Tmax

PEN

PEI~

PEZ

C&GS card 56-63:

08:41:07.5

55.6° N., 162.0° E.

Kamchatka

h about 60 knl

Magnitude 5.2 (CGS).

July 16

U

u

U

July 15

M Z

A Z

D Z

U Z

Pa Z

Ha Z

Z iF 19:38:19.5 d

July 30

M Z iP 05:55:16.0 d

A Z iP 15.5 d

D r'7

LJ eP 14.9 d

U FEZ iP 16 d

u PEZ iR 06:10:28

U PEN is 06:02:52

U PEN eG 06:07:40

C&GS card 59-63:

05:45=53 .. 3

29.6° So, 177.3° w.

Kermadec Islands region

h about 33 km

Magnitude 5.3 (CGS)

6.1 (HVO).

C&GS card 62-63:

19:26:26.0

6.0° N., 125.1° E.

Mindanao, Philippine Islands

h about 118 km

Magnitude 5.0 (CGS).

Aug. 2

M

12:07:51

Tmax 00:48~23

Tmax 00:49:02

Z

Z

Ha

Pa

July 19

M Z Tmax 13:28:16

A Z Tmax 13:28:00

D Z Tmax 13:28:18

MP Z Trnax 13:27:59

Ha Z Trnax 13:28:05

C&GS card 57-63:

00:04:05.3

4901° N., 128.9° w.

Vancouver Islands region

h about 33 km

Magnitude 4.8 (CGS).

C&GS card 57-63:

18:27:18.4

43.1° N~, 41.5° E.

Georgia SoS.R..

h abO·Llt 33 km

Magnitude 5.8 (CGS).

July 18

No coast and Geodetic Survey

preliminary listing.

July 24

U PEZ eR

•

C&GS card 59-63:

11:32:17.7

24.6° No, 12200° E.

Near east coast of Formosa

31
Table 5. --Distant earthquakes--Co11tinued

August 3

U PEZ ePP 10:41:26

U PEZ iSS 10:56:45

U PEE iPS 10:50:53

U PEE iL 11:07:53

C&GS card 67-63:

01:09:56

8.8° 88' 108.3° w.

Southwest of Galapagos Islands

h about 33 km

Magnitude 4.4 (eGs).

•

August 3

Pa z Tmax 02:17:26

August 4-5--Continued

U Z iP 3'3.7 c

Pa Z eP 34.8 d

Na Z iP 30.5 c

lea z iP 36.0 c

Hi Z iP 35.4 d

I-Ia Z iP 38.5 d

C&GS card 62M>063:

23: 54: 1)+0 0

17.5° So, 179.1° w.

Fiji Islands region

h abo'ut 515 km

Magnitude 5.2 ~CGS).

August 8

C&GS card 61-63:

10:21:36.6

7.7° N., 3508° w.

Mid-Atlantic Ocean

h about 33 km

Magnitude 6.1 (cas)

6.3 (HVO).

M Z eP 02:23:04.6 c

D Z iP 05.2 c

U Z iP 05.0 c

Pa Z iF 06.0 c

Hi r7

LJ eP 03.7 c

U PErr\J eS 02:29:40

U PEE eL 02:33:04

U PEZ iR 02:35:11

C&GS card 62~63:

20:26:0401

30.7° Se, 178.3° w.

Kermadec Islands

h abo'ut 37 km

Magnitude 5. 2 .tcGS).

August 3

M Z iP 20:35:30.5 d

A Z eP 30~3 d

D Z eP 29.0 d

Hi Z eP 33.1 d

August 4-5 •

M

A

D

MP

z

Z

Z

Z

iP

iP

eP

iP

00:01:33.9 c

33.8 c

33.6 c

33.8 c

2

Cg~GS c8,rd 63-63:

02:14:54.4

5402° N., 168.1° E.

Fox Islands, Aleutian Islands

h about 33 km

Magnitllde 5. 5 -( coo )

5.8 (HVO).

August 8

M Z eP 11:26:04.9 d

A Z eP 05.0 d

D Z iP 04.4 d

u Z eP 05.0 c

l'Ja Z eP 02.1 c

1Ii Z iP 07.0 c

Ha Z iP 08.1 d

·u PEZ eP 05 c

U PEZ iR 11:43:04

U Y...EE e8 11:34:09

U PEN eL 11:40:04
Table 5. --Distant earthg,llakes-...Continued

06:21:1702 c

20.0 d ft_ugo 1-7 1~( 0 5 c

19.3 c M n

LJ eP 11:23:20.9 d

18.3 C 14. Z eP 21.8 c

15g0 d D Z eP 21.5 C

18 d Pa Z eP 23.3 C

06:37:54 Hi Z eP 21.0 d

06:29:15 U PEZ iP 21 d

U PEZ iR 11:42:33

3

Aug. 9

U PEZ eP 14~44:14 c

U PEZ is 1·4·~ 50: 34

U PEZ iR 14:54~39

U PEE iL 14~52:56

C&GS card 64~63~

18:43~55u5

3g4° S~, 13504° E~

West Iran

h abou.t 33 krn

Magnitude 66>4 (CGS)o

17:37:14.5 d

14.9 d

15.0 d

12.9 C

14.9 c

15 d

17:39:21 d

17:41:12

17:43:00

17:43:27

17:47:04

17:47:44

17:48:38

17:52:37

17:54:04

17:57:02

18:08:26

17:39:53

17:50:59

18:00:27

18:02:57

18:14:28

iF

eP

iP

eP

eP

eP

ipP

iPF

ipPP

iPPP

iSKS

is

iSP

i

iSS

isSB

i

isP

esB

e

iG

i

z

z

z

z

PEZ

PEZ

FEZ

PEZ

PEZ

FEZ

PEN

PEN"

P~J

PEN

PEl\T

Z

PEZ

PEZ

FEZ

PEZ

PEZ

PEZ

C&G8 card 65-63:

17:25:05.9

13~8° SO) 69.3° w.

Peru-Bolivia border

h about 543 km

MagnitU.de 7075 (Pas)

8 (Bl~s).

C&GS cctrci 61.~-63:

06:11:34.6

3709° N., 141.6° E.

Near east coast of Honshu, Japan

h about 59 l\:m

MaJgnitllde 6. 6 (HVO).

u

u

U

D~

U

U

U

TJ

'U

U

U

U

u·

U

U

U

U

.A.

D

N

Pa

Hi

Allg. 1~

August 15--Continued

18 55 :18g 8 d

18.0 d

19,,6 c

iF

iP

eP

z

z

Z

M

A

Hi

August 8, ~963~~Continued

C&GS cBJrd 65-63

11:16~l.lg2

5g8° Sg, 151g0° E.,

New Britain

h about 48 km

Felt: PalmaInlal, Pornio

Magnit'ude 5 (Bks)

6:8 ~~~~L

Aug. 14

C&GS card 64~63~

14:36~456)9

15.3° Sg, 1rr5o rro wo.

Fiji Islands region

h about 33 km

Magnitude 585 (CGS)

5. 7 (HVO) g

Aug. 15

M Z eP

A Z eP

D Z eP

Pa Z eP

Hi Z iP

Iia Z eP

U FEZ iP

U PEZ iR

U PEE 0Qlu

•
Table 5Q--Distant earthquakes--Continued

August 17, 1963--Continued Aug. 20--Continued

U PEE is 11:32:17 C&GS card 65 uo 63: U PEN iG 11:39:49 15:48:12112

• C&GS card 66-63: 41 Q 2° N., 142.7° E.

11:12:41.2 orr east coast of Honshu, Japan

30.6° N., 130.9° E. h abollt 50 km

Ryukyu Islands region Magnitude 4.5 {CGS).

h about 33 km

Magnitude 5~6 (CGS) Aug. 22

6u5 (HVO) g

Aug. 17 Ha Z Tmax 10:09:25

M Z iP 11:43:48.3 c C&GS card 68-63:

A Z iP 47.4 c °9=27;09g3

D z iF 48.3 c 4200° N., 126.2° w.

U Z iP 4'r.8 c orr coast of Oregon

Pa Z iP 44.8 c 11 about 33 km

C&GS card 67-63: MaV1itude 5.6 (CGS).

11:34:2304 A1.1go 22 17.7° N., 94~3° We

Veracruz, Mexico 1'4 Z iP 20:01:47.4 c h about 163 km D Z iP 46.9 c Magnitude 409 {CGG).

) ·u Z eP 47.2 c

Aug. 18 Pa Z eP 50.2 c

Na Z eP 45.1 c

M Z eP 18:50:1002 c Hi Z iP 50.5 c

A Z iP 12.2 c Ha Z eP 51.1 c

U Z eP 11.3 c U PEZ eP 50 d

Hi Z iP 10.4 c u PEZ iR 20:16:46

U PEE eL 18:58:00 U PEE is 20:09:26

U PEZ eR 18:59:33

C&GS card 65-63:

18:43:1601

50.3° No, 176.9° w.

Andreanof Islands, Alelltian Islands

h about 33 km

.. Magnitude 505 (eGs) .

Aug. 20

u PEZ eR 16:13:59

34

C&GS card 69-63:

19:52:25.0

9g4° S., 158.0° E.

Solo1non Islands

Felt

h about 33 km

Magnitude 6075-7 (Pas)

601 (CGS)

g~g. J~VP~l'k).
Table 5. --Distant earthquakes--Continued

C&GS card 67- 63:

12 :18:12.5

17.5° S~, 178.8° w.

Fiji Islands region

h about 565 km

Magnitude 6.5 (Pas)

6-6.25 (Brk)

6.1 (CGS)

6.5 (RVO).

19:58:28.5 c

28.2 c

28.3 c

28.3 c

29.9 c

31.9 c

31.1 c

33.9 c

21:03:51.9 d

21:41:02

14

12

21:41:15

21:40:53

21:39:27

13:43:19.0 c

19.3 c

19.6 c

20.1 c

19.0 c

16.6 c

13:57:40

14:04:54

14:01:00

14:01:52

eP

eP

eP

iP

iP

iP

iP

iP

eP

Tmax

Tmax

Tmax

Tmax

Tmax

Tmax

Z

Z

z

z

z

Z

Z

IV! Z iF

A Z iP

D Z iP

MP Z eP

U Z eP

Hi Z eP

U PEZ eSS

'U PEZ iR

'U PEN eL

U PEE eG

C&GS card 71-63:

13:32:12.3

71.4° Nn, 73.3° w.

Near east coast of Baffin

Island. Felt: Clyde River.

h about 33 km

Magnitude 6025-6.5 (Pas)

6 (Bks)

5.9 (eGs)

6.2 (RVO).

C&G·8 card 72 -63 :

20:56:59.9

53.9° N., 165.6° w.

Fox Islands, Aleutian Islands

h about 33 km

Magnitude 5. 0 (CGS).

Sept. 8

M Z

A Z

MP Z

U Z

Pa Z

Ka Z

Hi Z

IIa Z

Sept. 6

M

M

MP

U

Pa

Hi

Ha

September 4

35

15:42:27.3 d

26.7 d

26.7 d

26.8 d

25.1 d

23.8 d

27.7 c

3305 d

27 d

15: 52: 58

16:02:50

16:06:02

12 :25 :27. 3 c

27.0 c

25.8 c

2707 c

27.3 c

29.1 c

29.7 c

31.0 c

32.3 c

27 c

12:27:06

12:27:18

12:35:52

12:28:10

12:31:18

12:34:32

Z eP

Z eP

Z eP

Z eP

Z eP

Z eP

Z iP

Z iP

Z iP

PEZ iP

PEZ ipP

PEZ iPP

PEZ iSS

PEE isP

PEE is

PEE isS

M

A

D

MP

U

Pa

Hi

Ka

Ha

U

U

U

U

U

U

U

Aug. 29

M Z iP

A Z eP

D Z eP

U Z iP

Pa Z iF

Na Z iF

Hi Z eP

Ha Z eP

U PEZ iP

U PEZ is

U PEZ iSSB

U PEZ iG

C&GS card 68-63:

15:30:31.4

7.1° B., 81.6° Wo

Off coast of Peru

h about 23 km

Magnitude 6.5 (Pas)

6.1 (CGS)

608 (RVO).

August 25, 1963

•
Table 5Q--Distant earthquake~--Continued

•

September 8, 1963--Continued

C&GS card 72-63:

19:50:29.8

23.~0 S., 179.8° E.

Fiji Islands region

h about 550 kIn

Magnitude 5~7 {CGS).

Sept. 13--Continued

1Y1P Z eP 24.3 c

U Z eP 25.1 c

Pa Z eP 22.4 c

I\fa Z eP 29.6 d

Hi Z eP 21.9 c

Ha Z eP 24.2 d

C&GS card 72-63=

02:45:45015

4e 4° S., 152,Q 7° EQ

New Britain;

felt, Rabau1

h about 3 km

Magnitude 5~6 (eGs)

6Q 3 (HVO)o

C&GS card 'T5 -63 :

08:59:37~6

3.5° So, 131.2° E.

Ceram

h about 33 km

Magnitude 507 (CGS).

Sept. 13

Sept. 9

M Z eP 02:55:29.1 c

Hi Z eP 29.3 c

Ha Z eP 31.2 c

U PEZ iP 28 c

u PEZ eG 03:03:34

U PEl'. eR 03:11:52

U PEE eS 03:03:17

M Z Tmax 03:55:51

A Z Tmax 38

D Z Tlnax 48

U Z Tlnax 48

Ka Z rrmax 03:56:02

Ha Z Tmax 03:56:27

Sept. 11

M

M

A

D

Z

z

Z

Z

eP

eP

eP

eP

09:11:23 .. 4 c

17:07:25oJ4 c

24.8 c

26.3 c

No C&GS preliminary 1isting~

Sept. 14

M Z iP 04·:01: 53il8 d

li. Z eP 53~3 d

MP Z eP 52.9 d

U PEZ iR 04:17:16

C&GS card 77-63:

03:52:161»9

3104° So, 17900° w~

Kerrrladec Islands

11 about 33 km

Magrlit"ude 4. 9 ,( CGG )

5u 9 ~HVO) v

Septa 15

M Z iP 00:55:35.5 d

A Z iP 35.4 d

D Z iP 34w4 d

U Z iF 35.3 d

Pa Z iF 37.3 d

Na Z iP 31.5 d

Ka Z eP 3906 d

Hi Z iP 38.4 d

Ha Z iP 40.8

U PEZ iP 35 d

U PEZ is 01:02:42

U PEZ iR 01:08:57

U PEN iG 01:06:28

M Z Tn~x 01:47:23

A Z Tmax 19

D Z Tmax 22

U Z Tmax 21

Ha Z Tmax 01:47:51

C&GS card 75-63.:

00:46:54.. 1

1003° So, 165,,6° Eo

Santa Cruz Islands 0 Felt, Vanikoro.

h about 33 km

l~~litude 7~25-705 (Pas)

6w 3 (CGS)

6~75-7 (Pal)

6 7 5 (HVO) 0
Table 50 --Distant earthquakes,--Continued

September 16, 1963 Sept" _ 17 -Continued

C&GS card 76-63:

20:05:21.9

13.4° S., 166.5° E.

Santa Cruz Islands

h about 28 km

Magnitude 5~0 (CGS).

C&GS card 75 ..63:

05:54:33.7

10.6° S., 78.2° w.

Central Peru

h about 61 km

Magnitude 6075 (Pas)

5.5 (eGs). 6~0 (liVO).

PEZ eR

03:05:01.7 d

00.6 d

00.. 4 d

02 .. 7 d

03.3 d

05.3 c

01 d

03:18:10

03:12:12

19:30:33.7 c

33.4 c

33.6 c

02:55:5704 c

58.0 c

iF

iP

iP

iP

eP

z

z

z

Z

Z

Z eP

Z eP

Z eP

Z eP

Z eP

Z eP

?EZ iP

FEZ eR

PEN is

C8::,GS card 76-.63:

19:20:08.2

10.1° So, 165.3° E.

Santa Cr'uz Islands

Felt: Eastern Solomon Islands

h about 17 km

M"agnit'ude 7 0 25 (Pas)

7 5 (Brk)

7 (Pal)

601 (eGs)

7. 5 (HVO) 0

C&GS card 82-63:

02:56:2463

19.. 3° S., 175.9° E~

Fiji Islands region

h about 28 knl

Magnitude 5.8 (cGS).

C&GS card 76-.63:

02:49:03.4

5205° N., 17409° w.

A11dreanof Islands, Aleutian

ISJa11dso

11 abou_t 105 km

Nt~grlitu(le 4. 8 (~GS)o

M

A

N

M

A

D

Pa

Hi

Ha

U

TJ

U

Sept. 22

Septu 22

37

20:28:10

19:28:51+~2 d

5304 d

53.1 d

5400 d

5)+.6 c

51.. 5 d

5409 c

56.5 c

54 d

19:36:00

19:42:09

19:39:l~7

20:20:44

23

06:07:08.0 c

08 .. 5 c

06:31:52

07:36:04

34

36

16

22

07:35:43

07:36:23

iP

eP

eP

iP

iP

iP

iP

iP

iP

is

iR

iG

Tmax

Tmax

eP

eP

eP

Tinax

Tmax

Tlnax

Tmax

Tmax

Truax

Tmax

z

Z

Z

z

Z

PEZ

Z

Z

Z

Z

Z

Z

Z

Z

Z

Z

Z

Z

PEZ

PEZ

PEZ

PEN

Z

Z

u

M

A

D

U

Pa

Na

Hi

Ha

U

U

U

U

M

U

D

Pa

U

M

A

D

MP

U

Pa

Na

Sept. 17

Sept. 17

•

..
Table 5u--Distant earthquakes--Continued

September 22, 196::l... -Cont~nl~ed. Sept. 24--Continued

C&GS card 76-63:

19:21: 5'-r.l

19.2° Su; 17509° E.

Tonga Islarlcls region

h about (~4 krh"

C&GS card 76-63:

17:02:36,,6

51.3° N., 179v2° Wv

Andreano£' If31arlc_s, Aleutian

Islands~

h about 33 knl

Magnitucle 5G 2 (eGS) ..

MP Z iF

Pa :-7LJ eP

Na Z eP

Ka Z eP

Hi Z eP

14:59:06.3 d

Tlnax 05: 06: 18

Tmax 05:05:01

eP

z

z

z

C&GS card 76-63:

16:30:16.0

10.6° B., 78.0° w.

Near coast of Peru

h about 80 l{nl

Magnitude 7 (Pas)

6.5 (Brk)

6.0 (CGS)

6. 6 (~vo).

Pa

Ha.

M

Septu 25

C&GS card 77-63:

14:50:18.2

10.1° S., 161+.5° E.

Solo~non Islands region

h about 33 km

Magnitude 5,,1 (cas).

.Septu 26

33.3 c

34.6 d

30.1 d

35.9 c

37.3 c

M z

Sept. 23

Sept. 24

M Z iP J..6: 42 :28. 8 c

A Z j.P 28.2 c

D Z it> 28.3 c

N Z tI) 28.3 c

MP Z i.I' 27 0 1~ c

Pa Z tl-' 29.0 c

N'a Z :.F ~~9. 5 c

Ka Z iP 31.6 c

Ha Z j.l) 32.5 c

u PEZ ~!_.P ~~8 c

u PEZ :LIJP 16:43:04

U PEZ iP}) 16:45~42

... U PEZ I~~P;) 16:53:37 '4. U PEZ eSf3 16:58:13

U PEZ eR 17:07:28

U PEN is 16:52:38

U PEN eSSE> .17:01: 52

U PEN ie· lr"(: 04: 20

U PEE e~)S 16:53:18

U PEE i ~3~f?S /

s~)p 16:54:09

C&GS card 77-63:

04:20:21.5

56.5° N., 153.4° Wo

Kodiak Island region

h about 33 km

Magn:it'.Ide 40 8 (CGS).

Sept. 26

M Z eP 05:35:00.4 c

U FEZ eS 05:40:42

U PEZ eR 05:44:14

U PEE eL 05:42:28

C&GS card 76-63:

05:28:07lJ3

50.4° No~ 176.9° w.

Andreanof Islands, Aleutian

Islands.

11 about 33 km

Magnitude 5.3 (cas).
•

Table 5e--Distant earthquakes--Continued

September 26, 1963

M Z Tmax 07:26:51

A· Z Tmax 07:27:16

D Z Tmax 07:27:20

MP Z Trnax 07:27:20

U Z Tmax 0'""(: 27: 09

Pa Z Tmax 07:27:04

Ha Z Tmax 07:25:31

C&GS card 77-63:

06:40:4305

56.6° N., 15382° Wo

Kodiak Island region

h abou.t 33 kIn

Magnitude 4~8 'CGS).

Sept. 27

U PEN eS 11:41:24

U pEN eG 1l.:44:49

U PEZ eR 11:46:53

C&GS card 7'9-63:

11:25:53.6

17g2° Se, 17407° E.

.Fiji Islands region

h about 33 km

Magnitude 5. 0 (eGS).

Sept. 28

M Z iP 07 : orr: 090 4 d

A Z iF 0809 d

D Z iP 08.0 d

MP Z iP 08~9 d

u Z iP 09.2 d

Hi Z eP 10.4 d

Na Z eP 06.1 d

Ka Z iP 11.6 d

C&GS card 79-63:

06:58:12.7

31.5° So, 179.6° Eo

Kermadec 1sJa nds

h about 457 km

Magnitude 5.0 (cas).

39
During the quarter "felt reports" were either phoned or mailed

in by the following people to whom we wish to express our gratitude

for these and other instances of cooperation.

North Hawaii

Mrs. Lindsey

Mrs. Ecklund

Mrs. Van Gorder

Dr. Heather

Mr. Hea

Mrs. Calles

Kau

Mrs. Billings

Mrs. Paiva

~..r. Meinecke

Hila region

Mrs. Shoemaker

Mrs. Ingledue

Mrs. Shaffer

Mre Baldwin

Mrs. Baldwin

Mr. Donahoe

Mr. Ha

Mr. Wessel

Mr. Potlock

Mr. Usagawa

Mr. Kumuhaki

Mr. Reeves

Mr. Guerimo

Pu.:n.a

Mrse Isbell

Mrs. Kimura

Miss Takemoto

Ko~a coast

Mr. Johnston

Mr. Glass I

-- Mrs. Fujino

Mr. Sutherland

Miss Greenwell

Miss Wallace

Mro Apple

Mrs. Apple

Mr. Ladd

40

Kilauea summit area

Mrs. Mist

Mr. Koyanagi

Mrs. Forbes

Dr. Wentworth

Dr. Moore

Mr. Francis

Mr. Young

Mr. Yamamoto

Miss English

Mr. Shipman

Mr. Correa

Mr. Cuskelly

Mrs. Hansen

Central Hawaii

Kulani Honor Camp
,

UNITED STATES

DEPARTMENT OF THE INTERIOR

GEOLOGICAL SURVEY

HAWAIIAN VOLCANO OBSERVATORY

SUMMARY 32

October, November) and December 1963

By

Arnold T. Okamura, Robert Y. Koyanagi, Willie T. Kinoshita,

J. G. Moore, D. L. Peck, and Howard A. Powers

Observatory staff

Geology

J~ G. Moore (Scientist-in-charge)

D. L. Peck

C. K. Wentworth (retired Dec. 1963)

Geophysics

W. T. Kinoshita

G. Kojima

R. Y. Koyanagi

HJ L. Krivoy

A. T. Okamura

A. S. Ryall (left 11-27-63)

N. Sherrill (left 11-19-63)

Geochemistry

R. T. Okamura

Support

E. T. Endo

J. C. Forbes

W. H. Francis

B. J. Loucks

A. Yamamoto

Visiting Japanese scientists

(Cooperative program ended Dec. 31, 1963)

T. Minakami (Group leader) C. Kurihara

D. Shimozuru M. Kurihara

K. Kamo

S. Hiraga
•

Contents

Page

Chronological summary------------------------------------------------ 1

Tilting of the ground around Kilauea caldera------------------------- 4

Seismic summary------------------------~-----------------------------8

Persons or agencies reporting felt earthquakes during the quarter---- 34

Publications of special interest and HVO numbered contributions,

1963--------------------------------------------------------------- 35

Illustrations

Figure 1. Map of the island of Hawaii showing seismograph stations

and localities mentioned in the text-------------------- 3

2. Tilting of the ground around Kilauea caldera-------------- 7

Tables

Table 1. Tilt coordinates at Uwekahuna Vault------------------------ 5

2. Tilt coordinates and changes at bases around Kilauea

caldera-------------------------------------------------- 6

3. Numbers of earthquakes and minutes of tremor recorded

on seismographs around Kilauea caldera------------------- 9

4. Local earthquakes recorded by seismographs of the

U.S. Geological Survey----------------------------------- 14

5. Distant earthquakes---------------------------------------- 23
•

Chronological summary

A flank eruption lasting less than 30 hours occurred on the central

part of the east rift zone of Kilauea Volcano (fig. 4) on October 5 and

6, 1963, just 43 days after the last previous eruption in Alae Crater.

The eruption was preceded by a marked deflation of the summit of

Kilauea, which began at 03h06m October 5, as indicated by a deflection

of the long-period seismographs at Uwekahuna. Ten minutes later

seismographs at the summit and upper east rift zone began to record

strong harmonic tremor and local shallow earthquakes. Harmonic tremor

increased markedly after 05h25m, which may have marked the beginning of

the eruption in Napau Crater.

A pilot who flew over Napau Crater at o6h05m on a flight to Naalehu

observed lava fountaining from a fissure extending across the floor of

the crater. When an Observatory party arrived at Makaopuhi Crater at

06hoSm they observed a billowing fume cloud and heard a faint roar to the

northeast. At Osh50m when they reached the southwest rim of Napau Crater

an active line of lava fountains up to 50 feet high extended across the

floor of the pit crater slightly north of the lS40 spatter ridge, and

So percent of the floor of the crater was flooded with 20 feet of lava.

Spatter and a small pad of lava across the trail northwest of Napau

was still fuming when first seen at OgP05m.

Beginning at Ogh30m regular aerial observation of the eruption

was begun. At that time a line of vents extended from the west side

of Napau Crater 4 miles to the northeast along the rift zone. At

about 14hoom a quarter-mile line of 150-foot-high fountains broke out

farther down the rift zone near Kalalua Crater. These fed two lava

flows that were moving side by side down the rift zone. By 20h30m the

flows had reached slightly more than a mile from the source fountains

and were moving at less than 1/4 mile per hour; by o4hoom the next

morning the glow of fountains had ceased and the flows, now 1 1/2 miles

long, had stopped. The final outbreak of the eruption occurred at

09h4om on a fissure about 3 miles northeast of Napau Crater. Lava

fountained briefly to heights of 25 feet, but by 09h 50m the vent

spattered weakly and presumably it soon died.

The site of the eruption, an inaccessible area of rain forest,

severely hampered observations both during and after the eruption.

However, the upper half of the area was examined on foot in October and

December, and the lower part was sampled and mapped by helicopter in

January. These studies, together with aerial photographs of the area

taken by the Navy in November, show that an almost continuous line of

active vents extended 7-3/4 miles northeastward along the rift zone

from a point 1/3 mile west of Napau Crater. The vents are on the

extreme north side of the rift zone, and a·re arranged in a right offset

en echelon pattern. In addition to the small areas of spatter the

eruption produced a shallow lava lake in Napau Crater and two major flows:

a mile-long flow 2 to 3 miles northeast of Napau, and a double flow
(2~ miles long and as much as mile wide) north of Kalalua Crater. The

flows contain from less than 1 percent to 15 percent olivine, probably

cover about 1-1/3 square miles, and contain about 10 million cubic yards

of lava~ Occupation of the network of long-base tilt stations around the

summit of Kilauea showed a marked deflation of the summit area between

August 6 and October 10, and the short-base tilt instruments at Uwekahuna

indicated that the detumescence associated with the October eruption was

equivalent to the removal of approximately 30 million cubic yards of

magma from the summit reservoir.

J. G. M. and D. L. P.

During the eruption, readings of the short-base tiltmeter (table 1)

showed strong collapse along the direction Eo 28° S., and for a week

following. the eruption showed moderate collapse to the south. For about

a month, from October 15 to November 15, the tilt indicated slow

tumescence along the direction W. 28° N. This was accompanied by a

sporadic, moderate increase in the daily number of local caldera quakes.

From mid-November to the year-end, tilt recovered slightly in a due west

direction. Total recovery of tilt from the end of the eruption to the end

of the year was less than 1/2 to the west and 1/5 to the north of that lost

in the collapse. The daily number of small local quakes again showed

sporadic and moderate increase during the last six weeks, and there was

a slight peak of 30 deep small quakes on December 26.

Mid-October to early November was a period of high earthquake

activity along the Kaoiki fault system. On October 23 a Kaoiki quake

of ~agnitude 5.3 occurred and was followed by several hundred smaller

shocks. Several of these were felt.

Two distant earthquakes originating in the Kurile Islands were

large enough to alert coastal residents of Hawaii of possible sea

wave activity. These occurred on October 12 and 20 (H.S.T.) with

magnitudes of 8.1 and 7.6, respectively. No damaging sea wave occurred in

Hawaii.

H. A. P.

2
Kane Nui 0 Homo

- ----

-

. Napau Crater

Makaopuhi Crater 0 0 a::JEXPLANATION

Lava flows of. October 1963 eruption.

Crocks, faults, and eruptive vents. o I 2 3 Mi

C)Q Cinder cones and pit craters (hachured).

I ,

SCALE (approximate)

Figure A. Preliminary map showing area of lava erupted October 

(East Rl:ft Zone)
•

20' -+------ J

,•. --1-------_........

EXPLANATION

• Seismograph Station

• Town or locality

10 15 WII..

10 1& 20 25 Kllolll.'."

Contour int.rvol 1,000 f••t

Oalum i, m.an ..a 1•••,

Topo,raplly by US G.olo,leat Sur.ey

Laupaho.ho. -+- _

CO,.

Kumukahi

Apua Point

Point

,-----------------------+--------,•.

Figure l.--Map of the island of Hawaii showing seismograph stations

operated by the Geological Survey and localities mentioned in

the text. Epicenters of local earthquakes are given in terms

of geographic coordinates, which are indicated at the edges of

the map_

3
Tilting of the ground around Kilauea caldera.--Tilting of the

ground around the summit of Kilauea is monitored daily by a short-base

water-tube tiltmeter in Uwekahuna Vault, and at irregular intervals

it is measured on a regional scale by means of a network of field

tilt-bases and a portable water-tube tiltmeter. The attitude of the

ground surface at each tilt base is reported in terms of north-south

and east-west tilt coordinates. Both coordinates at each station were

arbitrarily set equal to 500 when measurements at that station were

begun. Increasing tilt coordinates correspond to northward and

eastward tilting of the earth's surface, ioe., to a relative subsidence

toward the north and east. A one unit-change in coordinate corresponds

to a tilting of 1 microradian (l,mm per km) in the direction indicated.

4
Table 1. --Tilt coordinates at Uwekahuna Vault, October,

November, and December, 1963

Date N-S E-W Date N-S E-W

Oct. 6 480 516 Dec. 1 .467 511

13 461 538 8 467 510

20 461 535 15 467 510

27 462 530 22 467 506

Nov. 3 465 522 29 468 505

10 466 519

17 467 514

24 467 513

5
•

Table 2.--Tilt coordinates and changes at bases around Kilauea caldera (see f

Tilt base Date Tilt coordinates Rate (10-6 rad/mo) 

(location) (1963) and direction of 

N-S E-W tilting since 

last reading 

Uwekahuna Oct. 10 420.8 527.5 37.3 S. 36° E. 

(19°25.5' N. , 155°17.4' w.)

Tree Molds 9 422.7 527.3 17.0 s. 19° E. 

(19°26.3' N. , 155°17.3' w. )

Sand Spit 11 860.2 797·9 40.4 N. 61° E. 

(19°24.1' N. , 155°16.8' w.)

Kalihipaa 7 363.8 351.8 18.1 N. 43° w. 

(19°21.4' N. , 155°15.3' w.)

Keamoku 7 501.6 605.9 34.2 S. 57° E. 

(19°25.1' N. , 155° 19. 0' W.)

Ahua Kamokukolau 10 628.2 529.8 47.0 N. 14° W. 

(19°22.7' N., 155°16.6' W.)

Kipuka Nene 14 486.2 5'10.8 0.7 N. 27° E. 

(J-9° 19.4' N., 155°16.7' W.)

Hilina Pali 14 497.4 501.5 0.3 s. 83° E. 

(19° 18. 2' N., 155°18.6' W.)

Kapapala Ranch 11 495.5 501.4 1.2 S. 56° w. 

(19°20.5' N., 155°23.8' Wo)
cr Kom", Kol o

Q

Kap

•

• HP

2000

.. 1--1

TILTING RATE 2.5 X 10-6 RADIANS / MONTH

AUG 6, 1963 - OCT 10, 1963

I I

5 KM

Figure 2. --Tilti.ng of the ground around Kilauea caldera, August 6 to

October 10, 1963. The vector d.epicting tilting a.t a given tilt

ba.se points in the direction of maximum relative subsidence and

has a length proportional to the rate of tilting during the

measurement interval. Closed circles represent field tilt bases;

open circles, short-base water-tube tiltmeters.

7

GPO 846.800
Seismic summary. --Events recorded by the U.S. Geological Survey

seismograph network in Hawaii fall into two categories: Local earthquakes

and tremor originating in the region of the Hawaiian Islands, usually

within 100 km of at least one seismograph, and distant earthquakes

originating more than 3,000 km from Hawaii. As an index of seismic activity

at Hawaiian volcanoes, daily counts of earthquakes and minutes of tremor

recorded by seismographs in Hawaii are listed in table 3. The earthquakes

are separated into groups on the basis of region of origin as determined

by analysis of records obtained daily at the Observatory (U, M, A, D, N, MP).

Earthquakes of magnitude 2.5 or greater are generally sufficiently well

recorded to be located with greater precision; they are listed individually

in table 4. Data on identifiable phases from distant earthquakes are

listed in table 5.

Locations of the seismograph stations are shown in Figure 1, and

essential data on the stations were given in Summaries 25 and 29.

8
.,

Table 3.--Numbers of earthquakes and minutes of tremor recorded on seismographs

U, M, A, D, N, WP, and MP around Kilauea caldera

Tremor is separated into three categories: deep, intermediate, and shallow, on the bas

amplitudes on seismographs in the summit region. Unless otherwise stated, tremor is 

be associated with movement of magma within the central of Kilauea.

Earthquake categories are: Halemaumau rock slides, which are detected by the characte

they produce on the North Pit seismograph; shallow earthquakes in the Kilauea calder

shallow earthquakes along the SW. rift zone of Kilauea and the adjacent portion of t

fault system; earthquakes along the eastern half of Kilauea's east rift zone--detect

on the Pahoa short-period vertical; earthquakes from a source about 30 km beneath Ha

earthquakes from the upper east rift zone ahd the adjacent fault systems of Kilauea

flank (these are usually first arrivals at the Ahua meter or at the new experimental 

Makaopuhi Crater (MP)); and earthquakes from other regions: Kana, Ma,una Kea, etc.

Tremor

(in minutes) Earthquakes

Deep

Intermediate Shallow Hale- maumau

slides

Kilauea

caldera

8W. rift

and

Kaoiki

Eastern

East

rift

Halemaumau

30 km

Upper

East

rift

40+ 11 7 30

------ ------ ------ 145 65 2 5 6

------ ------ ------ 140 59 6 2 5

------ ------ ------ 115 - - 57 5 4 8

Although many hundreds of earthquakes were recorded. during this

period (eruption), their arrival times were obscured by strong

continuous harmonic tremor; therefore, few epicenters were located.

------ ------ ------ 20+ 14+ 2 5 200+ 3 O

------ ------ ------ 40+ 34+ ----- 3+ 165+ ---

------ ------ ------ 40+ 20 ----- 10 50+ 2 O

------ ------ 1 40+ 29 1 3 25 1 O

1 M

4 O

1 O

3

Oct. 1

2

3

4

5

6

7

8

9

10

11
•

Table 3o--Numbers of earthquakes and minutes of tremor recorded on seismographs

U, M, A, D, N, WP, and MP around Kilauea caldera--Continued

Tremor

(in minutes) Earthquakes

Date

(1963) Inter- ". ", Hale- SW. rift Eastern Hale- Upper

Deep mediate Shallow maumau Kilauea and East maumau East 

slides caldera Kaoiki rift 30 km rift

Oct. 12 ---- 6 ------ ----- 25+ 85+ 3 10 1 Of

13 ---- ------- ----- 30+ 40 ----- 9 1 Ko

1 Of

14 _em-_ __e- __ ------ 1 40 21 1 ----- 8 1 Of

1 Ko

15 ---- ----- 2 1 15 14 1 3 7

16 ---- ---=-- 5 ----=-- 30+ 23 1 1 -----

17 e- c=:::I_ c:.;_ __ 1 20 21 ------ 2 17

18 ---- __ _C3It _____ ------ 17 10 5 5 1 Se 

19 &a--=- __ 5 5 25 19 _ -=-e:-:I_-=- CE3 __ .... __ 4 1 Of

20 ----- K2 -== _ -=-_ 3 1 25+ 12 _ c=-_e-._c:a _ 17 2 Of

21 ---- 2 50+ 14 .. E;D-=- ____ 1022 ---- ----- ____ .:3_ 1 30 17 __ 5 1 Of

1 Ko

23 ----- -------- ---=--- 43 425+ __ e- ___ 4

24 _ K» __ _cal_&-. _ ------ 40 76 ------ 5

25 ---- 3 60 115 ----- __ 8

26 ---- ----- -=------=- 1 35 73 ----- 8 l Ma

27 ---- 1 70 64 ------ 4 1 Ma

28 ----- ----- 3 ------ 90 40 ----- --.. 4 1 Ma

29 ---- ----- -----==-- ----- 70 34 ----- ------- 5

30 ---- ___ e-_ ------ ----- 80 98 8 40 1 Of

1 Of

31 ---- ----- ------ ----- 80 70 ----- 6 26 ----
Table 3c--Numbers of earthquakes and minutes of tremor recorded on seismographs

U, M, A, D, N, WP, and MP around Kilauea caldera--Continued

Tremor

(in minutes) Earthquakes

Date

(1963) Inter- Hale- SW. rift Eastern Hale- Upper

Deep mediate Shallow maumau Kilauea and East maumau East 

slides caldera Kaoiki rift 30 km rift

Nov. 1 ------ 80 70 8 23

2 3 ------ 70 80 11 1 Ma

3 ------ 90 123 6 7 1 Ma

1 Ma

4 ------ 60 54 2 6 1 Ma

5 12 ------ 40 27 1 14 ----

f---J 6 ------ 20 18 2 12 1 Off---J 7 ----- ------ 40 26 8 ----

8 1 50 16 2

9 ------ 100 88 9 ----

10 3 ------ 60 50 10 ----

11 ------ 100 49 12 ----

12 ------ 70 58 4 13 1 Ko

13 ------ 35 41 17

14 33 ------ 55 15 6 15 1 Of

1 Ma

15 ------ 50 25 17 2 1 Of

16 ------ 51 34 10 8 ----

17 ------ 45 42 13 1 Of

18 ------ 45 28 5 28 ----

19 ------ 40 42 4 13

20 ------ 20+ 25 4 18 ----

21 ------ 26+ 25 6 ----

22 ------ 47 49 17 ----

23 ------ 34 17 8 7 1 Of

24 ------ 41 19 3 6 ----
•

Table 30--Numbers of earthquakes and minutes of tremor recorded on seismographs

U, M, A, D, N, WP, and MP around Kilauea caldera--Continued

Tremor

(in minutes) Earthquakes

Date

(1963) Inter- Hale- SW. rift Eastern Hale- Upper

Deep mediate Shallow ma·umau Kilauea and East maumau East 

slides caldera Kaoiki rift 30 km rift

Nov. 25 7 ------ 1 26 19 4 10 ----

26 ------ ------ 33 8 1 15 ----27 12 ------ ----'-- 35 13 8 8

28 4 ------ ------ 35 13 5

29 ------ ------ 50 30 18 6 1 M

30 ------ ------ 60 31 9 ----

Dec. 1 ------ ------ 78+ 15+ 3+ 7

f-J 2 ------ ------ 50 1'1 2 9 [\)

3 ------ ------ 57 12 4 15 ----

4 ------ ------ 60 14 11 7 1 So 

5 ------ ------ 52 31 __11 9 ----

6 -----_. ------ 95 36 7 6 ----

7 ------ ------ 100 31 8 6 ----

8 3 ------ 90+ 35+ 1 6 1 Ko

1 Ma

9 ------ ------ 105+ 43 7 11 1 Ma

10 36 2 ------ ------ 120+ 10 2+ 10 ----

11 4 ------ ------ 115 40 3 13

12 64 ------ ------ 55 14 2 13 ----

13 31 ------ ------ 65 36 6 714 ------ ------ 65 25 6 15 1 Ma

1 Ka

15 ------ ------ 78 12 6 ----

16 ------ ------ 75 10 2 6 7 1 Ma

17 ------ 2 83 18 2 3 ----

18 ------ ------ ------ 85 25 14 2 ----
Table 3o--Nurnbers of earthquakes and minutes of tremor on seismographs

U, M, A, D, N, WP, and MP around Kilauea caldera--Continued

Tremor

(in minutes) Earthquakes

Date

(1963) Inter- Ha1e- SW. rift Eastern Ha1e- Upper

Deep mediate Shallow rnaurnau Kilauea and East maurnau Ea,st 

slides caldera Kaoiki rift 30 km rift

Dec. 19 ---- ------ ------ ------ 85+ 14 ----- 2 6 1 M

20 ---- ------ ------ ------ 80 18 ----- 7 8

21 ---- ------ ------ ------ 160 40 ----- 9 20 ----

22 ---- ------ ------ -------- 180+ 34 ----- 6 13 ----

23 ---- ------ ------ ------ 39 7 ----- 2 3 1 Of

24 ---- ------ ------ ------ 90 30 ----- 6 4 ----

25 ---- ------ ------ ------ 190 30 ----- 15 6 ----

26 ---- ------ ------ ------ 170 18 ----- 30 10 ----

27 ---- ------ ------ 150 25 ----- 5 7 1 Ka

28 ---- ------ ------ ------ 170+ 28 ----- 10 10

29 ---- ------ ------ ------ 180+ 35 ----- 1 12 ----

30 ---- ------ 4 ------ 175+ 18 ----- 12 9

31 ---- 3 ------ ------ 69+ 16 ----- 4 6 1 Of
Table 4.--Local earth uakes recorded b seismo raphs of the U.S. Geological Surve ,

October, November, and December, 19 3

[Entries for a given quake are: date, origin time (Hawaiian Standard Time), magnitude, d

and felt report. All earthquakes of magnitude 2.5 and larger, as well as many favora

smaller ones, occurring on or near the island of Hawaii are included in the list.

In the following list, some origin times are followed only by "KM 30" and a statement o

These are all members of a continuing family of quakes noted also in other Summaries. 

mean focus for this group is beneath Halemaumau at a depth of 30 km (19°24.1' N., 155

In the following list a number of quakes are described as "Upper east rift" (see Summar

statistical study of this group which occurrEd in the swarm periods during July 1 to 6 

3 to 4 gives a mean epicenter 19°21.5' N., 155°14' w. about 2 km south of Aloi Crater 

depth.

In Summary 24, "Kaoiki" was introduced as a symbol for listing any of a family of quakes 

focus 19°24' N., 155°24' W., h=3 to 8 km. This symbol is used in the following list]

Date Time Magni- Depth Epicenter 

(1963) tude (km) 

h m s Lat. N. Long. w. Description

- - -

Oct. 1 00 06 04.2 2.4 30 19°08.5' 155°26.6' 7 km SE of Pahala--------- -

1 11 04 04.3 2.2 10 19°17.1' 155°05.4' 48 km S. of Hilo---------- -

4 06 39 04.1 2.0 ---- -------- --------- KM 30--------------------- -

4 07 04 33.3 2.0 ---- -------- --------- KM 30--------------------- -

Although hundreds of eart

were obscured by strong h

These shocks originated m

rift of Kilauea..

km ENE of Makaopuhi

seismometer.

4 km NE of Makaopuhi

seismometer.

03 40 17.0 3.4 3

55

5 Shallow harmonic tremor and earthquakes start at 03:16.

were recorded during the eruption, their wave arrivals

tremor and few epicenters could be located precisely.

or south of the upper and middle sections of the east

03 '32 23.0 3.1 3 19°22.6' 155°08.1' 5
Table 4.--Loca1 earthquakes recorded by seismographs of the U.S. Geological Survey,

October, November, and December, 1963--Continued

Date Time Magni- Depth Epicenter 

(1963) tude (km) 

h m s Lat. N. .,Long. w. Description

- -

Oct. 5 03 56 14.5 2.9 3 19°22.0' 155°08.0' 5 km E of Makaopuhi ----

seismometer.

5 03 58 08.6 3.1 3 19°22.6' 155°08.9' 4 km ENE of Makaopuhi ----

seismometer.

5 04 14 04.. 2 3.3 3 19°22.2' 155°09.0' 3 km ENE of Makaopuhi ----

seismometer.

5 04 20 41.4 2.6 3 19°22.6' 155°08.9' 4 km ENE of Makaopuhi ----

seismometer.

5 04 24 59·5 3.5 3 19°22.0' l55°08.0' 5 km E of Makaopuhi ----

seismometer.

5 04 51 07.5 2.7 3 _19°22.8' 155°08.5' 4 km ENE of Makaopuhi ----

seismometer.

5 05 44 2.6 3 19°22.8' 155°06.2' 8 km ENE of Makaopuhi ----

seismometer.

5 10 25 57.9 3.0 3 19°20.7' 155°15.0' 4 km SEe of Ahua ----

seismometer.

5 10 41 22.5 3.1 <3 19°20.4' 155°17.5' 5 km SW. of Ahua ----

seismometer.
Table 4o--Loca1 earth uakes recorded by seismo raphs of the D.So Geo10 ica1 Survey

October, November, and December, 19

Date Time Magni- Depth Epicenter 

(1963 ) tude (km) 

h m s Lat. N. Long.. W. Description

- - -

Oct. 5 18 10 14.5 2.7 5 19°21.7' 155°15.6' 1 km SEe of Ahua --

seismometer.

5 19 26 51.9 3.1 <3 19°20.9' 155°16.5' 3 km ssw. of Ahua --

seismometer.

5 20 42 35.7 2.8 3 19°20.3' 155°15.2' 4 km SSE. of Ahua --

seismometer.

5 20 54 00.2 3.4 3 19°20.6' 155°14.8' 5 km SEe of Ahua --

seismometer.

5 21 39 53.6 2.9 5 19°21.9' 1 km SW. of Ahua --

seismometer.

5 21 45 25.2 2.4 5 19°21.5' 155°15.8' 1 km S. of Ahua --

seismometer.

6 00 38 28.2 2.6 8 19o17e9' 155°02.6' 17kmSE. of Makaopuhi

seismometer.

6 04 05 43.0 10 19°21.1' 155°05.8' 10 km E. of Makaopuhi --

seismometer.

6 06 19 21.9 3.0 13 19°22.8' 155°07.5' 6 km ENE. of Makaopuhi

seismometer.

6 08 09 49. 6 2.5 10 19°20.2' 155°01.0' 5 km wsw. of Ka1apana --6 09 28 48.4 2.4 10 19°24.2' 155°05_9' 11 km NE. of Makaopuhi --

seismometer.

6 10 07 26.9 2.7 e 1.9°17.1' 155°00.6' 8 km 8W. of Kalapana --

6 12 26 28.8 3.4 10· 19°21.8' 155°09.5' 3 km E. of Makaopuhi Fe

seismometer. 

6 21 04 41.5 2.6 10 19°16.8' 155°03.1' 49 km SSE. of Hila --

7 04 08 07.9 2.7 13 19°20.2' 155°06.7' 8 km ESE. of Makaopuhi --

- seismometer.

7 06 34 11.0 3.0 10 19°12.1' 155°07.5' 10 km SEe of Apua --

Point.
Table 4.--Local earth uakes recorded b seismo raphs of the Geol0 ical Surve 

October, November, and December, 19

Date Time Magni- Depth Epicenter 

(1963 tude (km) 

h m s Lat. N. Longo w. Description

- - -

Oct. 7 17 05 15.3 2.5 8 19°19.8' 155°03.7' 45 km SSE. of Hila

7 20 14 48.8 2.5 10 19°1808' 155°05.8' 45 km S. of Hila -

7 21 40 28.4 2.6 5 19°12.4' 155°10.8' 7 km SSE. of Apua Point7 22 20 33.7 3.7 5 19°12.5' 155°10.5' 7 km SSE. of Apua Point F

8 06 10 52.0 2.0 --- ------- -------- KM 30------------------ -

8 11 44 35.3 3.3 8 19°1806' 155°05.1' 45 km S. of Hi1o------- F

9 03 15 04.1 2.6 10 19°17.9' 155°1303' 5 km NW. of Apua Point -

9 18 45 24.0 200 3 19°06.0' 155°08.2' 18 km SEe of Apua Point -

9 19 05 27.0 202 3 19°06.0' 155° 08.2" 18 km SEe of Apua Point -

10 00 07 0506 2.5 8 19°1507' 155°0102' 5 km SW. of Ka1apana -10 21 34 2906 2.8 8 19°08.1' 155°44.0 18 km NW. of Naalehu---

10 20 02 1802 2.3 35 19°11.2' 155°2801' 2 km SEe of Pahala----- F11 11 04 35.7 2.0 8 19°05.8' 155°2307' 21 km ENE. of Naalehu-- -

11 13 49 11.2 2.4 3 19°15.4' 155°20.1' 11 km SEe of Desert -

seismometer.

11 13 40 48.9 2.6 3 19°15.4' 155°20.1' 11 km SEo of Desert F

-- ----- - seismometer.

11 16 52 47.8 3.8 8 19°08.3' 155°05.0' 64 km S. of Hila F

11 17 37 34.4 2.2 8 19°08.3' 155°05.0' 64 km S. of Hila -

11 17 38 16.3 2.3 10 19°14.8' 155°0707' 7 km ESE. of Apua Point. -11 22 44 22.4 2.2 8 19°12.0 155°2101' 16 km SSE. of Desert -

seismometer.

11 23 46 01.3 3.2 13 21°10' 155°20' 106 km NE. of Ha1eakala

seismometer.

12 16 39 39·2 2.8 8 19°06.6' 155°06.4' 67 km S. of Hilo------- --

12 18 14 25.6 2.8 8 19°14.5' 155°22.0 11 km S. of Desert --

seismometer.

12 21 16 30.3 3.3 8 19°14.5' 155°22.3' 11 km S. of Desert --

seismometer.
Table 4Q--Local earth uakes recorded b seismo raphs of the U.S. Geo10 ical Surve 

October, November, and December, 19

Date Time Magni- Depth Epicenter 

(1963) tude (km) 

h Lat. N. Longo w. Description - m s - - -

Oct. 13 01 45 0 .2 2.2 ---- ------- -------- Kaoiki----------------- -

13 06 37 08.0 2.8 3 19°25.3' 155°46.1' 20 km SEe of Kealakekua -13 09 59 16.2 2.0 8 19°09.9' 155°11.5' 10 km S. of Apua Point -

13 12 06 13.3 2.6 5 19°17.8' 155°27.2' 9 km SW. of Desert -

seismometer.

14 07 58 35·9 2.4 3 19°0500' 155°15.0' 20 km SSW. of Apua Point

14 23 36 03.1 2.7 <3 19°29.0' 155°53.0' 6 km SEe of Kealakekua -

15 13 57 01.2 2.8 --- -------- --------- KM 30------------------- F

17 04 26 10.6 2.5 8 19°17.1' 155°14.9' 11 km SSE. of Ahua -

seismometer.

17 09 27 56.4 2.0 8 19°18.0' 155°21.5' 5 km SEe of Desert

18 14 19 51.0 2.9 8 19°12.5' 155°20.9' 13 km E. of Pahala F

18 17 53 42.7 2.6 10 19°17.2' 155°08.7' 9 km SEe of Makaopuhi -

seismometer.

19 16 34 34.9 2.9 3 19°03.1' 155°17.8' 31 km E. of Naalehu -

20 02 31 42.8 2.7 8 19°0805' 155°15.8' 15 km SW. of Apua Point

20 18 29 55.5 2.4 8 19°05.5' 155°16.3' 35 km E. of Naalehu

20 11 20 36.2 2.4 --- -------- ---------

21 14 49 17.2 2.0 13 19°18.2' 155°14.7' 8 km SSE. of Ahua -

seismometer.

22 03 16 41.6 2.1 8 19°15.0' 155°13.7' 5 km wsw. of Apua Point -

22 03 54 23.6 2.0 10 19°19.5' 155°13.1' 6 km SW. of Makaopuhi -

seismometer.

22 07 35 45.2 3.3 13 20°23' 156°14' 40 km S. of Haleakala

seismometer.

22 19 08 11.7 3.2 --- -------- -------- Kaoiki----------------- F

22 21 01 19.0 2., 3 19°28.0' 155°43.3' 21 km ESE. of Kealakekua -

23 10 24 06.4 5.3 --- -------- -------- Kaoiki------------------ F

23 10 35 58.5 2.7 --- -------- ----=----- -

23 10 48 00.7 2.6 --- -------- -------- Kaoiki------------------ -

23 11 24 47.0 3.8 --- -------- -------- Kaoiki------------------ F
Table 4. --Local earthquakes recorded by seismographs of the U.S. Geological Survey

October, November, and December,

Date Time Magni- Depth Epicenter 

(1963) tude (km) 

h m s Lato N. w. Description

- - -

Oct. 23 11 33 31.4 2.1 --- -------- ------- Kaoiki-------------------- 

23 12 36 16.9 2.9 --- -------- ------- Kaoiki-------------------- 

23 12 53 56.0 2.0 --- -------- ------- 

23 13 02 48.8 2.0 --- -------- ------- Kaoiki-------------------- 

23 13 28 10.1 2.7 --- _____ -=a __ ------- Kaoiki-------------------- 

23 13 37 07.0 2.2 --- -------- ------- Kaoiki-------------------- 

23 17 31 08.3 2.2 --- -------- __ c:. ____ Kaoiki--------------------23 18 25 28.6 3.5 --- -------- -------- Kaoiki-------------------- 

23 20 52 57.6 2.8 --- ------- Kaoiki-------------------- 

24 08 53 57.8 2.3 --- -------24 16 07 53.7 2.7 --- -------- ------- 25 15 29 34.0 3.8 --- -------- ------- Kaoiki-------------------- 

26 00 03 54.7 3.5 --- ------- ------- Kaoiki-------------------- 26 02 29 04.8 3.3 --- ------- ------- Kaoiki-------------------- 

26 06 57 53·9 3.2 --- ------- ------- Kaoiki-------------------- 26 13 09 28.4 2.4 8 19°11.3' 155°38.8' 15 km NW. of Naalehu 

26 22 46 40.6 2.2 --- ------- Kaoiki-------------------- 

27 00 46 59·0 2.1 8 19°14.2' 155°32.3' 8 km NW. of Pahala-------- 

28 01 08 56G9 2.2 --- ------- ------- Kaoiki-------------------- 

28 04 45 33.7 2.1 8 19°17.8' 155°32.6' 13 km NW. of Pahala------- 

29 13 01 45.3 3.3 30 19°17.5' 155°23.3' 6 km S. of Desert 

seismometer.
Table earthquakes recorded by seismographs of the UoSo Geological Surve

October, November, and December, 1963--Continued

Date Time Magn'i'" Depth Epicenter 

(1963) tude (km) 

h !!! s Lat. No Long. Wo Description

Oct. 29 23 53 42.5 2.3 25 ,19°14.7' 155°13.9' 5 km wsw. of Apua Point

30 02 08 46.2 2.2 13 20°31' 155° 53.' 46 km SEe of Ha1eakala -

seismometer.

30 05 40 29.0 2.0 --- __ c.- _____ --------- Kaoiki---------------=---

30 07 15 19·9 2.4 --- -------- -------- Kaoiki-------------------30 07 20 26.2 202 --- --------

30 12 57 04.2 2.7 --- -------- KM 30-------------------- F

30 14 02 22.7 3.0 35 18°56.8' 155°22.8' 26 km SEe of Naa1ehu----- F

Novo 1 13 48 05.2 2.7 --- -------- KM 30--------------------

2 12 46 04.5 206 --- -------- Kaoiki-------------------2 22 09 42.6 2.7 _...- -------- -------- Kaoiki-------------------2 03 22 32.9 2.7 8 19°1204' 155°3405' 17 km NNE. of Naa1ehu----

3 10 35 56.4 304 5 19°1201' 155°34.9' 15 km N. of Naa1ehu------

3 21 23 2504 3.7 13 20°09.3' 155°2700' 8 km NNEo of Honokaa----- F

4 00 25 45.3 203 13 19°52.1' 155°29.6' 13 km NNE. of Pohaku1oa

5 06 45 2700 304 --- --------- _ .. __ c:zi ___ Kaoiki------------------- F

5 22 01 0205 3.1 5 19°12.2' 155°31.3' 5 km WNW. of Paha1a------ -

6 02 38 15.5 2.3 13 19°13.4' 154°58.2' 15 km S. of Ka1apana----- -

7 08 43 03.7 2.2 --- -------- --------- Kaoiki------------------- -

8 22 18 32.5 301 --- -------- --------- Kaoiki------------------- _8 22 36 51.6 2.5 --- -------- ---------

12 01 50 15.0 2 0 6 8 19°16.4' 155°10.2' 3 km NE. of Apua Point-- -12 18 48 15.5 2.3 8 19°13.2' 155°0701' 10 km SEe of Apua Point--12 23 12 27.0 2.0 13 20°11.9' 155°38.2' 21 km NNE. of Kamuela

seismometer.

13 02 42 15.3 2.1 --- ------- --------- KM 30--------------------

14 01 37 12.0 3.2 --- ------- --------- F

14 09 33 31.5 2.6 --- ------- ---------- Kaoiki----- g -------------F

14 21 50 16.0 2·9 13 19°46' 157°01' 120 km WNW. of Kealakekua
r\)

o

Table earthquakes recorded by seismographs of the UQS. Geological Survey

October, November, and December,

Date Time Depth Epicenter 

(1963) tude '(km) 

h m s Lat. N" Long. w. Description - - -

Nov!» 14 23 38 50.5 2.6 3 19°54.0' 155°32.5' 23 km SEe of Kamuela

seismometer.

15 04 02 09.0 3.5 13 19°26' 156°09' 25 wsw. of 

Kealakekua.

15 07 18 34.0 2.1 ---- ------- -------- Kaoiki------------------ 

15 09 01 26.5 3.8 ---- ------- ---=------ KM 30------------------- F

15 10 11 33.2 2.2 ---- ------- -------- KM 30-------------------16 06 55 51.5 203 ---- ------- KM 16 12 26 39.1 209 ---- ------- -------- KM 30------------------- 

16 16 07 0002 2.1 ---- ------- -------- KM 30------------------- , 

17 08 23 2700 204 13 18°56' 155°09' 37 km SSE. of Apua Point 

17 11 16 14.0 205 ---- ------- -------- F

l7 17 07 47.5 203 ---- ___ c:a ___ --------- 

18 19 51 25.7 2.4 ---- ----_ ... - __ c=- _____ Kaoiki------------------

20 14 16 58.7 2.2 ------- --------- K}.1 30-------------------23 02 29 41.3 207 13 19°38' 156°35' 52 km of Keahole

Point.

26 00 13 18.5 2.4 ---- ------- --------- Kaoiki------------------ 26 11 21 1805 3.3 3 19°21.8' 155°07.1' 13 km NE of Apua Point--

27 02 14 52'.5 2.0 ---- ------- --------- Kaoiki------------------ 

29 18 02 58.0 3.6 8 19°20.1' 155°07.8' 12 km NE. of Apua Point F29 19 51 25.3 2.2 13 19°56.2' 155°21.5' 13 km SW. of Laupahoehoe

Dec. 2 03 11 2206 2.3 ---- -------- --------- KM 30------------------- -

3 09 51 26.5 2.9 8· 19°16.2' 155°13.0' 3 km WNW. of Apua Point -

4 14 02 05.7 2.5 8 19°14.8' 155°15.8' 15 km So of Ahua

seismometer.

8 01 34 07.0 2.2 8 19°33.8' 155°54.8' 6 km N. of Kealakekua -8 li 20 49 50.8 2.0 8 19°12.2' 155°41.4' 18 km NW. of Naalehu - 
Table 4o--Local earth uakes recorded b seismo raphs of the U.S. Geol0 ical Surv

October, November, and December,

Date Time Depth Epicenter 

(1963) tude (km) 

h m s Lat. N. Long. w. Description - -

'

..

Dec. 9 18 47 55.5 3.4 8 19°53.1' 155°3103' 26 km SEe of Kamuela- .... - Fe

9 18 50 07.0 2.5 8 19°56.7' 155°30.6' 23 km ESE. of Kamuela--

11 22 22 24.0 206 ---- -------- ---------

12 17 29 1900 2.3 8 19°18.8' 155°1004' 8 km NNE. of Apua Point

13 21 19 24.0 2.4 8 19°17.8' 155°17.5' 12 km ESEo of Desert

seismometer.

14 03 32 34.0 202 --- _____ c::.c:= -=-------- KM

14 22 16 04.7 2.2 8 19°1401' 155°36.7' 19 km NNW 0 of Naa1ehu-.... -

14 23 59 22.1 2.3 13 19°59.2' 155°5902' 18 km WSW 0 of Kawaihae--16 10 57 39.8 2.6 8 19°1301' 155°34.8' 17 km N. of Naa1ehu-----

19 21 17 3000 2.3 13 19°57.0' 155°2202' 15 km wsw. of Laupahoehoe

21 00 30 58.4 2.1 __ -=t_ KM 30--------------------

21 06 06 1101 2.8 ___ c::a ____ KM

23 16 49 19.4 2.2 ----- ______ -=-_23 17 44 55.5 2.6 8 19°19.2' 155°1207' 10 km SEo of Ahua

seismometer.

24 04 33 3700 2.0 3 19°18.1' 155°05.8' 12 km of Apua Point

24 20 04 55.5 2.3 8 19°14.9' 155°11.3' 2 km SSEo of Apua Point

25 04 20 04.0 2.3 8 19°1405' 155°2509' 12 km SSW. of Desert

seismometer.

26 12 11 21.0 2.7 ---- -------- Kaoiki------------------

27 15 39 31.1 2.7 13 20°0102' 155°53.0' 7 km wsw. of Kawaihae---

27 02 12 '30.6 200 ---- ------- -------- KM

27 03 03 23.3 2.0 ---- ______ c.. --------- KM

27 17 33 15,.0 2.4 ---- __ __ -_ __ e- KM 30-------------------

28 11 14 55.5 2.4 .. ------- --------- Kaoiki------------------ --

29 04 02 0201 2.4 25 19°19.8' 155°12.8' 8 km SEo of Ahua

seismometero
f\)

f\)

Table 4.--Local earthquakes recorded by seismographs of the Geological Surve

October, November, and December,

Date Time Magni- Depth Epicenter 

(1963 ) tude (km) 

h m s Lat. N. Long. Wo Description - - -

Dec. 29 16 22 19.0 2.4 ---- -=---------- Kaoiki---------------

29 22 14 50.3 2.7 ---- --------- ---------- Kaoiki--------------- -

31 03 18 07.0 2.3 10 19°12.7' 155°11.0' 6 km SSE. of Apua

Point.

31 09 24 56.3 3.1 ---- --------- KM 30----------------
Table 5.--Distant earthquakes

[Times are reported in Greenwich Civil Time which is 10 hours faster than

Hawaiian Standard Time. A "c" following the time of P indicates

compressional first motion; a "d" indicates dilatational first motion.

Station symbols, locations, and instrumentation are presented in summary, 29.

Magnitudes calculated from the Hawaii seismograms are followed by (HVO).

Location of epicenter, origin times, and focal depths, and magnitudes

reported by other institutions are taken from "Preliminary Determination

of Epicenters" published by the U.S. Coast and Geodetic Survey]

C&GS card 80-63:

15:48:17.2

58.5° S., 25.1° W.

Sandwich Islands

h about 54 km.

C&GS card 83-63:

05:47:05.5

20.8° S., 174.1° w.

Tonga Islands

h about 33 km

Magnitude 5. 3 {CGS)

5.7 (HVO)o

C&GS card 80-63:

23:24:34.7

32.2° No, 131.6° Eo

Kyushu, Japan

h about 33 km

Magnitude 605 (Pas)

6 (Pal)

5. 7 (CGS) 0

Oct. 2, 1963

M Z eP 05:55:15.6 d

U PEE eS 06:02:14

U PEE eSS 06:05:35

U PEE eL 06:06:43

U PEZ eR 06:08:53

00:24:25.3 c

23.9 c

23.2 c

24.8 c

25.2 c

21.0 c

27.6 c

31.1 c

iP

iP

iP

iP

iP

iP

iP

iP

Z

Z

Z

Z

Z

Z

Z

Z

C&GS card 81-63:

00:17:01.1

15.1° S., 173.2° w.

Samoa Islands region

h about 33 km

Magnitude 6 ,Pas)

5. 75 (Bks)

5.7 (CGS).

M

A

D

N

MP

Na

Hi

Ha

C&GS card 81-63:

13:14:24.6

23.6° S., 179.9° E.

Fiji Islands region p

h about 550 km

Magnitude 5.7 (CGS).

Octo 8

Oct. 7

M Z iP 13:22:24.9 d

A Z iP 24.4 d

D Z iP 23.1 d

N Z iP 24.4 d

MP Z iP 24.7 d

Na Z iP 20.9 d

Ka Z iP 27.6 c

Hi Z iP 27.3 d

Ha Z iP 29.1 c

23:35:19.9 c

21 c

23:54:49

23:44:09

PEZ eR 16:48:07

Z eP

PEZ iP

PEZ eR

PEE is

U

M

U

U

U

Octo 3

Octo 3

23
Table 5.--Distant earthquakes--Continued

Oct. 13

C&GS card 84-63:

12:58:21.6

45.0° No, 150.1° E.

Kuri1e Islands

h about 50 km

Magnitude 5.4 (CGS).

M Z iP 16:08:56.7 c

WP Z iP 57.2 c

MP Z iP 57.9 c

Hi Z eP 56.3 c

U P:E:N is 16:16:24

U PEE iL 16:21:14

U PEZ iR 16:23:22

C&GS card-84-63:

15:59:52.9

45.6° N., 150.5° E.

Kurile Islands

h about 35 km

Magnitude 6.1 (CGS).

Oct. 13 (14)

u PEZ eR 00:17:50

Oct. 13

M Z iP 13:07:24.9 d

A Z iP 26.1 d

D Z iP 25.1 d

E Z iP 26.2 d

U Z iP 25.2 d

Hi Z iP 24.8 d

Oct. 12, 1963

M Z iP 11:36:09.4 c

D Z iP 10.1 c

N Z eP 10.3 c

Pa Z eP 10.6 d

Na Z eP 14.7 d

Ka Z eP 05.2 c

Hi Z eP 10.0 c

Ha Z eP 11:35:57.5 c

U PEZ iP 11:36:10 d

U PEZ is 11:43:31

U PEZ iR 11:50:30

C&GS card 85-63:

11:26:57.9

44.8° N., 149.0° E.

Kuri1e Islands

h about 40 km

Magnitude 6.75-7 (Pas)

7 (Bks)

6075-7 (Pal)

705 (HVO).

Octo 13

M Z iP 05:27:03.6 d

A Z eP 04.7 d

D Z eP 04.2 d

U Z eP 03.9 d

Na Z iP 06.0 c

Hi Z eP 01.3 d

Ha Z eP 05:26:52.7 d

U PEZ iP 05:27:04 d

U PEZ is 05:34:26

Ha Z Tmax 06:21:20

C&GS card 84-63:

23:52:22.8

44.5° N., 150.1° E.

Kurile Islands

h about 50 km

Magnitude 5.5 (eGs).

Oct. 14

C&GS card 84-63:

05:17:57.1

44.8° N., 149.5° E.

Kurile Islands

h -a·bout 60 km

Felt: Hokkaido and Honshu,

Japan. Seismic sea waves:

400 ft. Hokkaido; 2.5 ft.

Oahu, Hawaii; 2.2 ft.

Crescent City, California;

1.5 ft. Attu, Aleutians.

Magnitude 8.25 (Pas)

7.75-8 (Pal)

8.1 (HVO)

Small tsunami in Hil0 Bay.

2

D

U

Z eP

PEZ eR

04:20:15.5 d

04:35:06
Table 5.--Distant earthquakes--Continued

Oct. 14

C&GS card 90-63:

06:49:37.8

4282° N., 152.3° E.

Kurile Islands

h about 40 km

Magnitude 4e2 (cas)

5.8 (HVO).

C&GS card 84-63:

13:21:45.2

44.8° N., 151.0° E.

Kurile Islands

h about 60 km

Magnitude 5.75 (Bks)

5.9 JcGS)

6.0 (HVO).

Oct. 14, 1963--Continued

C&GS card 84-63:

04:11:14.0

44v7° N., 150.6° E.

Kurile Islands

h about 45 km

Magnitude 6,3 (cas).:' .0 (HVO).

23:46:09

23:48:23

M Z iP 09:19:48.7·c

A Z iP 49.7 c

D Z iP 49.3 c

MP Z iP 50.1 c

U Z iP 49.3 c

Pa Z iP 50.5 c

Na Z iP 49.4 c

Hi Z iP 48.9 c

C&GS card 85-63:

00:53:07.2

44.7° N., 150.7° E.

Kuri1e Islands

h about 25 km

Seismic sea waves: 1.0 ft.

LaJol1a, California; 0.5 ft. Oahu,

Hawaii.

Magnitude 6.75-7 (Pas)

7.25-7.5 (Pal) 7.6 (HVO).

C&GS card 87-63:

09:10:43.9

44.4° N., 150.0° E.

U PEN iG

U PEZ iR

C&GS card 84-63:

23:24:34.4

44.6° N., 149.0° E.

Kurile Islands

h about 45 km

Magnitude 5.4 (CGS)

6.6 (HVO).

Oct. 20 ---

Oct. 20

M Z iP 01:02:20.6 d

A Z eP 22.0 d

D Z iP 21.3 d

Ha Z eP 14.4 c

Na Z eP 22.8 c

Hi Z eP 20.3 d

U PEZ iP 22 d

U PEZ is 01:09:36

U PEZ iR 01:16:10

U PEN iG 01:14:00

Oct. 17--Continued

u PEZ eR 07:13:23

M Z iP 13:30:41.7 d

A Z eP 43.0 d

D Z iP 42.7 d

MP Z eP 43.7 d

U Z iP 42~8 d

Pa Z iP 44.1 d

Na Z iP 43.0 d

Hi Z iP 42.2 d

Ha Z iP 31.3 d

u PEN iG 13:42:51

U PEZ eR 13:44:51

Oct. 17

M z iP 23:33:57.8 d

A Z iP 59.4 d

D Z iP 58.7 d

Pa Z eP 23:34:00.8 d

U PEN is 23:41:17

25

Oct. 15
Table 5.--Distant earthquakes--Continued

Oct. 20) 1963--Continued Oct. 25~-C9ntinued

C&GS card--Continued:

Kurile Islands

h about 40 km

Magnitude 5.5 (cas).

Oct. 20

C&GS card 89-63:

19:58:58.3

12.3° N., 144.5° E.

Mariana Islands

h about 29 km

Magnitude 5.4 (CGS).

u PEZ eR 12:16:01 Oct.. 29

C&GS card 87-63:

11:52:20.7

44.7° N.) 150.2° E.

Kurile Islands

h about 45 km

Magnitude 4.2 (CGG)

Oct. 31

C&GS card 88-63:

07:01:42.7

40.4° N.) 124.7° w.

Near coast of Humbolt County,

California

h about 38 km

Magnitude 4.7 (CGS)

Oct. 22

Pa

Ha

Z

Z

Tmax 05:16:20

Tmax 05:14:14

Ha z Tmax 07:43:07

Oct. 25

C&GS card 87-63:

03:25:38.8

43.9° N., 150.3° E.

Kurile Islands

h about 50 km

Magnitude 4.9 (cas).

(

C&GS card 85-63:

04:29:11.7

51~O° N.) 179.40E.

h about 55 km

Rat Islands, Aleutian Islands

Magnitude 4.9 (CGG)

M Z iP 20:09:05.2 c

A Z iP 05.4 c

D Z iP 04.8 c

MP Z eP 06.9 c

U Z iP 05.2 c

Ha Z eP 20:08:59.1 c

26

M Z eP 03:26:00.6 c

A Z eP 03:25:58.0 c

NIP Z eP 57.2 c

U Z eP 58.1 c

Pa Z eP 59.7 c

Na Z eP 56.7 d

Ka Z eP 03:26:03.1 c

Ke Z eP 00.1 C

Hi Z eP 02.1 c

U PEE eS 03:32:41

U PEE eG 03:36:00

C&GS card 89-63:

D3:l7:42.0

21.8° S., 175.0° w.

Tonga Islands

h about 33 km

Magnitude 6.25 (Pas)

5.5 (Bks)

6.25-6.5 -(Pal)

5.2 (CGS)

5.9 (HVO).

u PEZ eR 03:49:26

Octo 22
Table 5.--Distant earthquakes--Continued

Nov. 4--Continued

C&GS card 91-63:

01:14:32.8

15.1° B., 167.3° E.

New Hebrides Islands

h about 154 km

Magnitude 6.75-7 (Pas)

5.8 (CGS).

C&GS card 91-63:

01:17:08.9

6.8° B., 129.6° E.

Banda Sea

h about 80 km

Felt throughout Australia,

northern Tasmania, and Papua

Magnitude 7.5 (HVO).

01:29:03.6 d

04.9 d

03.6 d

04.5 d

04.8 d

06.4 d

02.0 d

01.6 d

06.7 d

01:29:05 c

01:29:17

01:29:34

01:29:50

01:32:42

01:35:00

01:38:53

01:44:05

01:47:42

01:49:51

eP

eP

iP

eP

iP

iP

iP

iP

eP

iP

iPcP

ipP

isP

i

i

iB

iSB

iBBB

iG

Z iP

Z

Z

Z

Z

Z

Z

Z

Z

Z

PEZ

PEZ

PEZ

PEZ

PEZ

PEZ

PEE

PEE

PEN

PEN

M

A

D

:MP

U

Pa

Na

Ke

Hi

U

U

U

U

U

U

U

U

U

U

Ha

Nov. 4

Oct. 31, 1963

M Z iP 08:58:53.2 d

D Z eP 52.0 d

U Z iF 52'.1 d

Pa Z iP 54.1 d

Ka Z iP 56.7 c

Ke Z iP 52.7 c

Hi Z iP 55.3 c

Ha Z iP 57.9 c

C&GS card 89-63:

08:51:42

17. 9° S., 178.8° w.

Fiji Islands region

h about 637 km

Magnitude 4.3 (cGSl

Nov. 3

M Z iP 03:22:20.9 d

A Z iP 19.8 d

D Z iP 20.0 d

MP Z iP 19.5 d

u Z iP 20.2 d

Pa Z iP 18.8 d

Na Z iP 20.1 d

Ka Z iP 22.4 d

Ke Z iP 21.7 d

Hi Z iP 20.5 d

Ha Z iP 25.0 d

u PEN is 03:32:32

U PEN" iG 03:42:56

U PEZ iR 03:46:10

C&GS card 90-63:

03:10:12.7

3.5 0B., 77.8° w.

Peru-Ecuador border

h about 33 km

Magnitude 6.75 (Pas)

6-6.25 ("Bks)

6.0 (Pal)

6. 0 (CGS) "

6.3.-(HVO).

Novo 4

M Z iP 01:23:14.1 c

Pa Z eP 15.4 c

Na Z iP 11.9 c

Ke Z iP 12.7 c

7
Table 5.--Distant earthquakes--C~ntinued

Nov. 6, 1963 Nov. 9--Continued

M Z iP 02:24:25.1 c C&GS card 93-63:

U Z eP 24.5 c 21:15:30.4 • U PEE is 02:33:19 9.0° S., 71.5° w.

u PEN eL 02:40:35 Western Brazil

h about 600 km

U PEZ iR 02:44:43 Magnitude 6.75-7 lpas~ 6.75-7 Bks

C&GS card 93-63: 5.9 (CG )

02:13:16.8 7 (HVO ).

138.4° E., 2.6° S. Nov. 10 Western New Guinea

h about 33 km M Z eP 01:12:26.8 c

Magnitude 6.3 (HVO). A Z eP 26.3 c

MP Z eP 25.8 c

Nov. 8 Pa Z iP 25.0 c

Hi Z iP 25.8 c

M Z iP 16:25:05.6 d Ha Z eP 32.0 c

MP Z iP 06.0 d u PEE is 01:22:19

U PEE iSP 01:23:34

C&GS card 91-63: U PEE i 01:26:58

1~13:36.2 C&GS card 93-63: 128.4° E., 2. 7° N. 01:00:38.8 Molucca Passage 9. 2° S., 71. 5° w. h about 216 km

Magnitude 5.7 (cGS). Western Brazil

h about 600 km

Nov. 9 Magnitude 6.5-6.75 (Pas)

6. 25 (BKS)

M Z eP 21:27:17.4 c

5.6 (CGS).

A Z eP 16.5 c Nov. 10 MP Z eP 15.9 c

Pa Z eP 15.0 c M Z eP 17:27:05.0 c

Ka Z eP 18.1 c D Z eP 05.5 c

Hi Z eP 15.9 c U Z eP 05.2 c

Ha Z iP 21.8 c u PEN is 17:34:45

U PEZ iP 17 c u PEN eL 17:39:19

U PEZ ipP 21:29:25 U PEZ iR 17:41:43

U FEZ esP 21:30:31 C&GS card 93-63: U PEZ iPP 21:31:09 17:17:42.7 U PEZ ipPP 21:32:55 44.4° N., 149.0° E. u PEZ iPPP 21:33:43 Kurile Islands U PEZ i 21:39:35 h about 40 km U PEE iSKS 21:36:51 Magnitude 5.5 (cGS) U PEE iSP 21:38:19 6.4 (HVO). U PEE isP 21:41:01

U PEN is 21:37:15 Nov. 15

U PEN i 21:42:19 M Z eP 21:15;40.6 c U PEN iSS 21:43:31 A Z eP 42.7 c U PEN iSSS 21:46:47 D Z iP 42.6 c u PEN i 21:49:55

U PEN eG 21: 52:13 28
Table 5.--Distant earthquakes--Continued

Nov. 15, 1963--Continued

C&GS card 93-63:

14:38:28.9

29.9° N., 113.6° w.

Gulf of California

h about 14 km

Magnitude 6.5 (Pas)

6.5-6.75 (Pal)

5.7 (cGS).

6.5 (HVO).

C&GS card 93-63:

21:06:34.0

44.3° N., 149.0° E.

Kurile Islands

h about 50 km

Magnitude 6.0 (Bks)

6.25-6. 5 -(~al)

6.0 (cas)

6. 5 (HVO).

Z eP

Z iP

Z iP

Z eP

Z iP

PEZ iP

PEZ iR

PEN is

PEN iG

09:59:46.9 d

47.0 d

46.2 d

47.0 d

z Tmax 16:02:06

M Z iP

A Z eP

D Z eP

U Z iP

C&GS card 96-63:

09':47: 59.0

1.6° N., 128.4° E.

Ha

C&GS card 96-63:

07:50:46.3

30.1° N., 114.0° w.

Gulf of California

h about 14 km

Magnitude 6 (Pas)

6 (Bks)

5.1 (CGS)

6.0 (HVO).

C&GS card 96-63:

15:13:11.0

52.2° N., 174.2° E.

Near Islands,

Aleutian Islands

h about 33 km

Magnitude 5.4 -( CGS).

Nov. 30

Nov. 23

M Z Tmax 09:19~16

U Z Tmax 12

Ha Z Tmax 15

C&GS card 102-63:

08:32.31

29.9° N., 114.0° w.

Gulf of California

h about 14 km

Magnitude 5.3 (CGS).

Nov. 28

Nov. 23

M Z iP 07:58:08.6 c

U Z eP 08.2 c

U PEZ eR 08:08:04

M Z Tmax 08:37:41

U Z Tmax 49

14:45:58.7 d

58.3 d

59.3 d

57.9 d

5801 d

56.8 c

14:46:03.1 c

14:45:56 d

14:46:02.7 c

14:46:02.7 c

14:51:56

14:56:06

15:25:50

41

15:26:15

43.3 c

42.. 0 c

44.3 c

44.3 c

21:15:43.0 c

42.4 c

21:30:40

21:23:02

21:27:40

iP

eP

eP

iP

iP

iP

iP

eP

iP

eP

is

iR

Tmax

Tmax

Tmax

z

Z

Z

Z

Z

Z

Z

Z

Z

Z

PEZ

PEZ

Z

Z

Z

W'

U

Pa

Na

Hi

U

U

U

U

Nov. 18

M

A

D

MP

U

Pa

Na

Hi

Ke

Ha

U

U

U

Pa

Ha

•

29
Table 5.--Distant earthguakes--Continued

•

Nov. 30, 1963--Continued

C&GS card--Continued

Halmahera region

h about 61 km

Magnitude 5.5 (cas).

Dec. 2

Dec. 7

M Z iP 04:15:40.9 c

A Z iP 40.1 d

U Z iP 40.4 c

Pa Z iP 41.9 d

Hi Z eP 42.8 d

Ke Z iP 38.6 d

Dec. 7

04:55:36.0 d

36.2 c

36.0 c

38.0 d

38.4 d

C&GS card 99-63:

04:07:52.8

22.1° S., 179.4° w.

Fiji Islands region

h about 546 km

Magnitude 5.5 (CGS).

M Z iP

A Z iP

U Z eP

Pa Z iP

Hi Z eP

C&GS card 102-63:

04:46:52.2

18.8° S., 169.2° E.

New Hebrides Islands

h about 227 km

Magnitude 4.7 (CGS).

Dec. 9

M Z Tmax 06:22:49

A Z Tmax 47

D Z Tmax 43

:rv1P Z Tmax 47

U Z Tmax 43

Pa Z Tmax 48

Hi Z Tmax 19

M Z Tmax 07:40:15

A Z Tmax 20

MP Z Tmax 22

U Z Tmax 21

Pa Z Tmax 17

Hi Z Tmax 02

Ha Z Tmax 07:39:24

M Z Tmax 01:00:14

A Z Tmax 02

D Z Tmax 11

U Z Tmax 07

Pa Z Tmax 00:59:43

Ha Z Tmax 01:02:48

C&:GS card 97-63:

23:03:41.6

22.4° S., 69.3° W.

Northern Chile

h about 18 km

Magnitude 6.25 (Pas)

6.1 {CGS).

C&GS card 97-63:

06:52:20

54.1° N., 134.2° w.

Queen Charlotte Islands

h about 33 km

Magnitude 3.9 (CGS).

Dec. 3 (4)

C&GS card 103-63:

01:35:24.5

45.3° N., 153.4° E.

Kurile Islands

h about 60 km

Magnitude 4.1 (CGS).

Dec. 4

Ha z Tmax 02:43:11

30

C&GS card 99-63:

05:38:29.5

54.9° N., 159.4° w.

Alaska Peninsula

h about 45 km

Magnitude 5.1 (CGSj.
Table 5.--Distant earthquakes--Continued

•

Dec. 10, 1963

M z iP 03:42:52.6 c

A Z iP 52.3 c

MP Z iP 52.6 c

C&GS card 100-63:

03:31:21.1

6.2° S., 128.1° E.

Banda Sea

Felt: Darwin

h about 366 km

Magnitude 5.6 (CGS).

Dec. 11

Dec. 12--Continued

C&GS card 99-E?3:

23:24:36.6

46.3° N., 150.5° E.

Kurile Islands

h about 90 km

Magnitude 5. 2 CCGS).

Dec. 14

M Z iP 07:59:19.8 c

A Z iP 20.4 c

D Z iP 20.7 c

MP Z iP 20.5 c

Ke Z iP 19.4 c

A Z eP 00:55:10.3 d

Na Z iP 09.7 d

Hi Z eP 15.9 c

Ke Z eP 11.2 c

U PEZ eR 01:05:17

C&GS card 103-63:

02:31:19.4

17.8° S., 178.6° w.

Fiji Islands

h about 537 km

Magnitude 4.9 (cGS).

C&GS card 101-63:

00:47:48.3

15.1° S. J 173.6° w.

Tonga Islands region

Magnitude 5.6 (CGS )i.'

h about 33 km.

Dec. 11

Dec. 15

19:47:17.5 d

17.9 d

19:57:58

M Z eP

A Z eP

U PEZ is

C&GS card 102-63:

15:44:22.3

51.0° N., 128.8° w.

Vancouver Island region

h about 33 km

Magnitude 4.0 (cas).

M Z Tmax 16:30:12

A Z Tmax 14

D Z Tmax 15

MP Z Tmax 07

U Z Tmax 12

Pa Z Tmax 18

Hi Z Tmax 00

Ha Z Tmax 16:29: 31

C&GS card 101-63:

07;51:07.9

62.7° N., 149.5° w.

Central Alaska

h about 95 km

Magnitude 5.1 (CGS).

Dec. 15

02:38:3704 c

36.4 c

35.8 c

36.4 c

36.8 c

33.7 c

39.9 c

35.5 c

39.3 c

41.7 c

iP

eP

iP

iP

iP

iP

iP

iP

iP

iP

z

z

z

z

z

z

z

z

z

z

M

A

D

MP

U

Na

Ka

Ke

Hi

Ha

Dec. 12

M Z

D Z

iP

iP

23:33:35.0 d

35.4 d

1

C&GS card 103-63:

19:34:45.5

408° S., 108.0° E.

Java Sea
Table 5.--Distant earthquakes--Continued

•

Dec. 15, 1963--Continued

C&GS card--Continued

h about 650 km

Felt: Djakarta

Magnitude 6.4 (CGS).

Dec. 18

M Z iP 00:38:43Q4 d

Pa Z iP 44.7 c

Na Z iP 40.5 c

Ka Z eP 47.8 d

Hi Z eP 45.7 d

Ha Z iP 50.1 c

U PEZ iP 43 d

u PEZ iR 00:52:12

U PEE is 00:45:47

U PEE iSS 00:49:22

U PEl\I iG 00:50:00

C&GS card 107-63:

00:30:02.6

24.8° s., 176.6° w.

Tonga Islands

Felt: Tonga, Fiji & Kermadec

Islands.

h about 46 km

Magnitude 6. 5 (CGS).

Dec. 21--Continued

C&GS card--Continued:

21.2° S., 175.8° w.

Tonga Islands

h about 90 km

Magnitude 5. 1 /(CGS ).

Dec. 21

M Z iP 13:21:18.4 c

A Z eP 19.1 c

D Z iP 18.4 c

MP Z iP 19.7 c

u Z eP 18.9 c

Pa Z iP 20.4 c

Na Z iP 17.8 c

Ka Z eP 17.8 c

Hi Z iP 20.0 c

C&GS card 105-63:

13:09:09.6

16.1° N., 119.7° E.

Near west coast of Luzon, P.I.

h about 49 km

Felt: Manila

Magnitude 5.6 (CGS).

Dec. 24

C&GS card 103-63:

08:57:17.8

7.0° S., 129.3° E.

Banda Sea

h about 103 km

Magnitude 5.5 (CGS).

C&GS card 105-63:

11:18:15.2

13.1° S., 166.7° E.

Santa Cruz Islands region

h about 61 km

Magnitude 5.5 {eGs).

Dec. 20

M

MP

Hi

Dec. 21

M

Na

Hi

z

Z

Z

Z

Z

Z

iP

eP

eP

eP

iP

eP

09:09:12.4 c

13.1 c

14.0 c

12:42:49 d

47.9 d

53 d

M

U

z

z

eP

iP

11:27:17.6 c

17.2 c

C&GS card 104-63:

12:34:22.7

3.2
•

Table 5.--Distant earthquakes--Continued

Dec. 28, 1963

M Z eP 05:54:53.0 c

D Z eP 51.9 c

Na Z iP . 50.4 d

Hi Z iP 55-7 c

Ha Z eP 57.8 c

C&GB card 105-63:

05:45:20.2

5.1° B., 153.5° E.

New Ireland region

h about 70 km

Magnitude 5.5 (cas).

Dec. 28

M Z iP 09: 13 : 35. 0 c'

A Z iP 34.3 c

D Z iP 33.6 c

MP Z iP 34.6 c

u Z iP 34.5 c

Pa Z iP 35.7 c

Na Z iP 31.2 c

Ka Z iP 37.4 c

Hi Z iP 37.3 c

C&GS card 106-63:

09:03:52.9

32.7° B., 178.9° w.

Kermadec Islands

h about 33 km

Magnitude 5.5-5.75 (Pal)

5.8 (CGS).

33
The following persons or agencies reported "felt" earthquakes during the

fourth quarter, 1963. Their assistance is gratefully acknowledged.

North Kona

Mr. Ready

Dr. Heather

Mr. Sherwood

Dr. Tabrah

Mrs. Tabrah

Mrs. Christensen

Mrs. Van Gorder

Hilo region

Mrs(I Shaffer

Mr" Isherwood

Mrse Lewis

Mrs. Chiquita

Sister Thecla

Mr. Okamura

Mrs. Okamura

Mrs. Potlock

Mr. Shoemaker

Mr. Baldwin

Mr. Blackwood

Kau region

Mrs 0 Paiva

Mrs. Ashton

Mr. Meinecke

Mrs. Billing

Mis s Yamamoto

Mrs. Walters

Puna

Mr. Warner

Mr. Williamson

Miss Takemoto

Kilauea summit region

Mr. Smith

Mr. Bush

Mr. Forbes

Mrs. Yong

Mr. Yong

Mrs. Mist

Mrs. Wentworth

Mrs. Yamamoto

Miss Engliph

Mrs. Hansen

Mrs. Dune-an

Kana coast

Mrs. Glass

Mrs. Higashihara

Mr. Ladd

Miss Greenwell

Mr. Johnston

Mr. Apple

Mr. Yeaman

Mr. Wallace

Mr. Sutherland

Mr. Sleightholm

Mrs. Gray

Central Hawaii

Mrs. Vredenburg

Mrs. Lindsey
Publications of special interest and HVO

numbered contributions, 1963

Kinoshita, W. T., Krivoy, H. L., Mabey, D. R., and McDonald, R. R., 1963,

Gravity survey of the is.land of Hawaii: U.S. Geol. Survey Prof.

Paper 475-C, art. 89, p. 114-116. ~HVO Contr. 182)

Moore, J. G., and Reed, D. K., 1963, Pillow structures of submarine

basalts east of Hawaii: U.S. Geol. Survey Prof. Paper 475-B,

art. 40, p. 153-157. (HVO Contr. 181)

Muir, I. D., and Tilley, C. E., 1963, Contributions to the petrology

of Hawaiian basalts, II, The tholeiitic basalts of Mauna Loa and

Kilauea: Am. Jour. Sci., v. 261, no. 2, p.111-128.

Richter, D. H., 1963, Volcano observations: Am. Geophys. Union Trans.,

v. 44, no. 2, p. 505-507. ~HVO Contr. 180)

35