DATE OBSERVING JUPITER IIN~ |BURSTI- | FREQ. JUPITER IO RANGE
PERIOD OBSER- TEN- | NESS RANGE | LONGITUDE
1974 VATIONS SITY MHZ

4 26 0859 1307
4 27 1146 1250
4 28 0855 1250 t
4 29 | 0855 1250 |
4 30 | 0855 1249
1 0644 1250 |
2 0739 1245
3 0805 1250 i
4 | 0905 1254 |
5 | 1016 1200
6 | 0900 1250
7 0910 1252 f
8 0901 1250 j
9 0845 1250
10 | 0920 1235
ii 0855 1200) 1041 1028) 2 [WEAK 13-25 | 26205-25208 | 252.7-25501

12 0855 1200
13 0855 1200
14 0257 1200 | 0420 0553) 2 |STRONG 18-39 [12204-17826 93.9-107.0
0905 1200
16 0651 1200
17 0845 1200
19 1006 1200
20 0900 1150
aL 0358 1145 | 0535 0654) 2 |STRONG 19-36 | 14224-19002
22 0845 1145
23 0855 1200 i
ran 0343 0800
25 0344 0758
26 0344 0800
27 0337 0800
28 0349 0850
29 0404 0802
30 0346 0800
34 0338 0730

PRU RukueU UR RUnU RU RU nUsU RU RU RU RUEU RC RUC EC RC EC RC RURCEUEG]
a

6 1 | 0344 o8co
6 2 | 0339 0929 | 0752 0838] 1 [MODERATE |19-22 |233.2-26101 | 32.7- 392
6 3 | 0344 0930 | 0357 0425) 2 |MODERATE|16-24 |241.9-258.8 | 203. 0-20760 |

0642 0653/ 1 |WEAK 14-21 |341.6-34863 | 226.4-227.9

08619 0925) 1 |MODERATE |11-18 | 40.3- 80-2 | 240.1-249.4"*
6 4 | 0344 0930 | 0700 0807! 1 |MODERATE |18-28 |143.2-183.7 | 72.5- 82.0
6 5 | 0357 0800 | 0545 0645) 2 |WEAK 17-29 |248.5-28467 | 26525-274.0
6 6 | 0402 9800
6 7 | 0354 0934 |
6 8 | 0346 0800 |
6 9 | 0354 0918 |
6 10 | 0255 0652 }
6 12 | 0304 o700 |
6 143 | 0254 o700 |
6 144 | 0331 0848
615 | 0257 03842 |
6 16 | 0254 0900
6 17 | 0255 0900 | 05417 0619] 1 |WEAK 18-30 |239.1-276.6 | 184.8-193.6 |
6 18 | 0255 0657 I
6 19 | 0259 0902 | 0635 0735) 1 |WEAK 18-26 |227.5-26308 | 243.0-251.4
6 20 | 0318 0908 |
6 21 |-0003 a7o4 |

|

* DENOTES SPECIAL OBSERVING PERIOD WHEN IO-RELATED EMISSIONS WERE POSSIBLE.
** EMISSION OCCURRED WHEN ANTENNAS WERE TRACKING SUNe JUPITER WAS ABOUT 40 DEGe
FROM SUN AND OUTSIDE THE NOMINAL BEAMWIDTH OF THE ANTENNASs

16



Io

EMISSION PLOT FOR THE APPARITION OF 1971

360 [OT Try
330 af ! a
= 1
300 --}-- a - a
Cy 1
270k —-! oo
ae - 5
c \ =_ ——
—— Lee
240 -— aa |
_ 4
210 = 7
- | tq
180 L
5 4 7
150 4
120
oot a 4
[ aT ;
60 - --+— po
r | _ q
on ne [ q
[ | |
ee ae a a 1 oon re ee
0 30 60 90 120 150 180 210 240 270 300 330 360

LCM (DEGREES)
Fig. 14.


DATE OBSERVING | JUPITER IN- | BURSTI- | FREQ. | JUPITER IO RANGE
PERIOD OBSER- TEN=| NESS RANGE | LONGITUDE

1969 VATIONS SITY MHZ
6 31 0200 0315
9 4 0204 0314
9 4 1428 1700
9 2 0200 0314
9 3 0151 O344
9 4 0200 0307
9°05 0200 0304
9 6 0115 0220
9 6 1433 2615
9 7 1429 2608
9 8 1427 2145
9°93 4721 «2156
910 1522 1534
9 10 1627 2158
911 1617 2157
9 12 1617 2200
913 1619 2200
9 14 1622 2300
9 15 1615 2204
9 16 1615 2159
917 1702 2257
9 18 1619 2304
919 1615 2257
9 20 1614 2306
9 24 1509 1700
9 21 1734 2303
9 22 1615 2305
9 23 1616 2300
9 24 1615 2303
9 25 1620 2300
9 26 1615 1718
9 26 1822 2304
9 27 1614 2308
9 28 i502 1800
9 28 1834 2301
9 29 1615 2303
9 30 1615 1956
3 30 2019 2300
10 61 1617 2301
10 3 1615 2304
10 4 1650 2300
10 5 1548 2301
10 6 1615 2305
10 7 1617 2302
10 8 1615 2305
1069 1615 2230
40 10 1609 2305
10 411 1548 23114
10 12 1555 2258
10 13 1556 2306
10 14 1612 2259
10 15 1701 «2232
10 17 1615 2303
10 18 1614 2302
10 19 1626 2258
10 20 4615 2215
10 21 1605 2258

10

|
}
|
|
|
|



\

ab

\

+04 )-

03

By —
o °o

NOISSIWA 40 ALIIISVOud

120 160 200 240 280 320 360
YEAR 1969

80

40

LCM (DEGREES)

1.

Fig.

20


+

Observations of Jupiter's Sporadic Radio Emission in the Range 7.6-41 MHz
9 September 1968 through 9 December 1971

by

James W. Warwick, George A. Dulk and David G. Swann
Department of Astro-Geophysics
University of Colorado
Boulder, Colorado 80302

This report extends the list of Jupiter's decametric emissions observed at Boulder through the

dupiter apparition of 1971, The data were recorded on the University of Colorado's radio spectrograph.

Previous reports which covered the period from 1960 through September 1968 are found in Warwick and

Kreiss [1964] and Warwick and Dulk [1965, 1966, 1968]. These reports cover the apparitions of 1960-63,

1964, 1965 and 1967-68, respectively.

We described the observing equipment and the data format in the previous reports. The present
report uses the same scheme. Observing periods + 30 days from conjunctions represent times when the
antennas were tracking the sun; Jupiter was within 30° of the sun and therefore in the antenna beam.
Observing periods and emission intervals which spanned 0000 UT are recorded with negative times and
the later date or with times greater than 2400 UT and the earlier date.

During the period of 1 July 1970 through 28 October 1970, no observations were made because the
observatory was being moved from a point 5 miles north of Boulder to a new and better site about 20
miles west of Boulder, Operation was sporadic during the first few months at the new site. These
factors are reflected in the decreased observing times.

The overall emission probability was 0.016 for 1969, 0.002 for 1970 and 0.023 for 1971; these
compare to an overall average emission probability of 0.077 for all apparitions from 1961 through
1968. Figure 1 is a histogram of emission probability vs. longitude of the central meridian (LCM)
(System ITI (1957.0)) for the 1969 apparition. Figure 2 is a histogram of emission probability vs.
Io's angle from superior geocentric conjunction %19. These curves resemble curves of previous years,
but the overall emission probability is much lower in 1969 than it was in 1968. Figure 3 shows the
joint probability distribution as a function of the LCM and zg. Note that the emission probability
was greater than 40% near coordinate (LCM, #7) = (150°, 90°).

Figure 4 is a plot of the (LCM, 19) relation for the emissions recorded by us in 1969. Each
sloped line represents one Jupiter event and is the path of the coordinate S19 from beginning to
end of the emission. The line slope is equal to P. /Pt9 where Jupiter's rotational period Py &% 413
days and Io's period Pig % 1.77 days. The uneven distribution of lines is due partly to Io's in-
fluence, partly to the near commensurabilities of the periods of Jupiter and Io, and partly to the
24 hour period of a single observer on the earth.

Figure 5 shows the (LCM, 41) path from beginning to end of each observation interval (time
when Jupiter was in the antenna Beam). The uneven distribution of observations is evident, despite

the fact that Jupiter was observed for 2417 hours (corresponding to an average of 239 rotations of
Jupiter or 42 of Io).

Figures 6 through 10 and 11 through 15 are similar plots for the 1970 and 1971 apparitions ,
respectively. Figures 6 through 9 reflect the decreased emission probability in 1970 during which
only 3 emissions were recorded.

Low emission probability is also evident in 1969 and 1971, compared with the previous years,
1961 through 1968.

_,, Figure 16 shows the combined histograms of emission probability vs. longitude of central me-
ridian LCM (System III (1957.0)) for all apparitions 1960 through 1971, a total of 11 curves. It
shows the basic information from which the need for revision of Pr (1957.0) = 9 hr 55 min 29.37
sec is derived. The main peak of emission, after LCM (System III t4987.0)} = 200°, more or less
steadily shifts towards later longitudes. It also shows some of the hazards in so doing, inasmuch
as the early peak of emission, before LCM (System III (1957.0)) = 200°, appears currently to be
shifting steadily towards earlier longitudes. A modification of Pyzq_ to 9 hr 55 min 29.72 sec
would make the main peak fit on a vertical line on Figure 16, but would exaggerate the backwards
motion of the early peak.

It will be of great interest to see the nature of these curves for the current and subsequent
years, 1972 and later, as the earth's view of Jupiter essentially returns to the geometry of the
years 1960 and later, shown in Figure 16.

;


PROBABILITY OF EMISSION

-50;

-40

30

-20

10

0.00£

Wl

80

120 160 200 240

To (DEGREES) YEAR 1971
Fig. 12.

31

280

Saveeereveves|
320 360



DATE OBSERVING JUPITER IN- | BURSTI- | FREQs. | JUPITER TO RANGE
PERIOD OBSER- TEN-| NESS RANGE | LONGITUDE

1974 VATIONS SITY MHZ

6 22 0000 0800) 0154 0302) 1 |STRONG 22-36 | 14924-19005 94. 0-103.6**

6 23 0250 0908

6 24 0255 0701

6 25 0245 0800

6 26 0304 0932] 0725 0809 1 | MODERATE! 17-33 | 23129-25805 | 235.1-241.3

6 27 0428 0700

6 28 0155 0804

6 29 0055 0818

6 30 0200 0810

7 4 0155 0810) 0630 0745} 41 | STRONG 23-29 | 23405-27608 | 16501-17507

7 2 0201 0800

7 3 0234 0930

7 4 0234 0930

7 5 0148 0900

7 it 0232 0830

7 12 0200 0730

7 14 o200 0730

7 415 0200 0730

7 16 0200 90730

7 17 0200 0730

7 18 0200 0730

7 20 0200 0730

7 21 0200 0730) 0203 0322) 4 | WEAK 20-29 | 20007-24804 | 23707-248.9%*

? 22 0230 0730

7 24 0230 0700

7 25 0230 0700

7 26 0230 0700

7 27 0230 0700

7 30 0230 0700

7 30 2200 2400) 2318 2350| 2 |MODERATE| 28-31 | 165.7-185.0 89e2- 9307¥*

6 1 0230 0630

8 2 0230 0630 | 0300 0326) 41 |MODERATE| 22-27 | 240.7-25604% | 167.4~17401

6 4 0230 0630

85 0230 0630

8 6 0230 0630

8 7 0230 0630

8 8 0230 0600

8 9 0200 0600

8 10 0200 0600

6 11 0200 0600

8 12 0200 0600

8 13 0200 0600

8 14 0200 0600

8 15 0200 0600

8 16 0200 0530

8 17 0200 0530

8 18 G200 0530

8 19 0200 0530

8 20 a200 0530

8 21 0200 0530

8 22 0200 0530

8 23 0200 0530

8 24 0200 0500

8 25 a200 0500

8 26 0200 0500

8 27 0200 0500

8 28 0200 0500

7

|


To

360 |-r

EMISSION PLOT FOR THE APPARITION OF 1969

-_ ak BL EAA GAL RU LG acon ee
330k apracfenpent
Ft —
|. | 4
300. — aan ies oF
fF - -T- J
270k a Fs a one re
ro | S|
a i =a |
24h SS
210r =]
180k
[ — J
150 —
120b =
. | ——— 4
CT op = |] 1
ook ea a -
5 4 4. 4
80f pe —_ 7
L | 4
30L fet J
. i J — 4
—— pein a fo tt. ‘oe oo 1 po n i ee Oe ca ae | n
0 30 60 90 120 150 180 210 240 270 300 330 360
LCM (DEGREES)
Fig. 4.

23


DATE OBSERVING JUPITER IN- | BURSTI- | FREQ. | JUPITER 10 FANGE
PERIOD OBSER- TEN-| NESS RANGE | LONGITUDE

1971 VATIONS SITY MHZ
10 24 0030 0130
10 25 0030 0130
10 26 0030 0130
10 27 0000 0130
10 28 0000 0130
10 29 1600 2600
10 30 1600 2600
10 34 1600 2600
ii 14 1600 2530
11 2 1610 2530
41° 3 1600 2530
11 4 1600 2530
11065 1530 2530
41 6 1530 2530
41 7 1530 2530
11 8 1530 2530
11 9 1530 2530
11 10 1530 2530
4414 1530 2530
11°12 1530 2500
41°13 1530 2500
11°14 1530 2500
11 415 1500 2500
11 16 1500 2500
41 17 1500 2500
11 18 1500 2500
41°19 1500 2500
11 20 1500 2500
di 2a 1500 2430
41 22 1500 2430
11 23 1500 2430
11 24 1500 2430
41°25 1500 2430
11 26 1430 2430
i1 27 1430 2430
11 28 1430 2430
141 29 1430 2430
11 30 1430 2430
42 4 1430 2400
12 2 1430 2400
12 3 1430 2400
12 4 1430 2400
1205 1430 2400
12 6 14400 2400
12 7 1400 2400
12, 8 1400 2400
12.9 1400 2400

19


To, LCM PROBABILITY CONTOUR MAP, YEAR 1971, CONTOUR INTERVAL .10

360 [Tr am oe en ae —r TT 7 Tr ae TT ne

300

re ae!
i
4
1

ve ee!

woh? | oy

or
reo GL
120
60 ——.-—al
[ b ]
. Th. —_ |
id
1 q
Ob a a a pod 1 freee
0 60 120 180 240 300 360

LCM (DEGREES)
Fig. 13.

32


DATE OBSERVING JUPITER IN= | BURSTI~ | FREQs | JUPITER TO RANGE
PERIOD OBSER- TEN-| NESS RANGE | LONGITUDE
1970 VATIONS SITY MHZ
6 8 0229 0857
6 9 0225 0858
6 10 0225 0939
6 11 0227 0856
6 12 0225 0856
6 13 0224 0857
6 14 0223 0915
6 15 0224 0858
6 16 0244 0849
6 17 0220 0857
6 18 0229 0857
6 19 |-0235 09220
6 19 0220 0828
6 19 0009 0500
6 25 |-0242 0302
6 28 0120 0600
1201 1712 «2200
11 2 1803 2233
11 3 1930 2225
414 4 1634 2400
141i 65 1635 2250
11 6 1643 2230
11 7 1712 «42230
4108 1645 2230
11 9 1648 2237
11 10 1702 2228
44 114 1651 2400
44 12 1637 2400
1113 1732 «2330
41°14 1705 2330
41°15 1701 2330
11 16 1628 2330
11 17 1652 2300
11 18 1642 2300
4119 1630 2300
441 20 1652 2300
141i 24 1710 2230
11 22 1630 2230
41 23 1752 2230
11 24 1631 2158
41 25 1616 2230
11 26 1636 2230
11 27 1734 2228
11 29 1643 2230
441 30 1626 2230
4204 1649 2230
12 2 1606 2230
12. 3 1634 2230
1204 1644 2230
12.5 1643 2230
12 6 1700 2230
12 7 1247) 1636
12 8 1716 «2230
1974
213 1115 1300

14

|
|



DATE OBSERVING JUPITER JIN- |BURSTI= | FREQ. | JUPITER TO RANGE
PERIOO OBSER= TEN= | NESS RANGE | LONGITUDE

1969 VATIONS SITY MHZ

2 8 0458 1342] 1139 1225) 3 |STRONG 12-18 84.5-112.3 B4o7-10102

29 0553 1330] 0600 0631) 3 |MODERATE| 11-19 300 2- 4900 | 25004-25408

2 10 0447 1330/ 0520 0550) 1 |STRONG 18-29 | 15607-17408 8823- 9206

244 0513 1330

212 0506 1330

2 13 0453 1330

214 0458 1330] 1024 41415) 1 |MODERATE) 14-34 | 223.1-254.0 | 225.6-232.8
1201 1300) 3 |STRONG 13-18 | 28108-31704 | 23903-24706

245 0457 0612

215 0708 1200

215 1200 1504] 1316 1458) 3 |STRONG 26-36 | 117. 8-179.5 93.5-107-9

2 16 0457 1330] 0707 0734 1 | WEAK 15-18 45 o3- Glo? | 24409-24807

2 417 0458 1330] 0808 0905) 3 | STRONG 11-24 | 23209-267 o& 97 e1-10502

2 18 0457 0504

2 18 0520 0532

2 18 0602 1330) 0616 0625) 2 | MODERATE) 15-20 | 315.9-32103 | 284.8-286.1

219 0503 1330) 1025 1104 3 | STRONG 12-19 | 25701-28007 | 16306-16901

220 0456 1330

221 0523 1330

2 22 0458 1459

2 23 0458 1330

2 24 0458 1330) 1001 1019 i | WEAK 16-22 | 276 0-286.9 9602-10008

2 25 0509 1330] 0616 0633) 2 |MODERATE| 16-20 | 290.7-301-0 | 270-0-272.4

2 26 0457 1330

2 27 0457 1340

2 28 0458 1330

34 0458 1330

3.2 0749 1330

3.3 0548 1330

3.4 0503 1330) 0509 0535 2 |MODERATE| 20-28 | 225.0-24007 | 245. 8-249.4

3.5 0916 1330

3.6 0507 1330

3.7 0458 0658

3.7 0612 1315

3.8 0525 1332

3.9 0458 1330

3.10 0458 1330

344 0457 1330) 0608 0645, 2 | MODERATE) 18-30 | 235.5-25708 | 23904-24406

3 12 0515 1330

3.13 0438 1330

3 14 0457 1300

3.45 0458 1300

3°16 0458 1300

317 0432 1300

318 0458 1300] 0516 0534 2 | MODERATE! 20-34 | 1787-18906 | 21723-21909
0704 0728 4 | STRONG 13-26 | 244.0-25865 | 23206-23600
0912 0933 2 | STRONG 13-23 | 32164-33401 | 25007-25327

3:19 0457 1300] 0850 1034 3 | STRONG 18-38 98.8-162.9 Q1o2-10602

3 20 0457 1300

3 24 0458 1300

3 22 0458 1300

3 23 0458 1300

3 24 0458 1300

3 25 0454 1300] 0958 1107) 2 |STRONG 19-24 | 324-0- Ge? | 24226-25224

3 26 0459 1300) 1025 1136 2 | STRONG 18-37 | 13029-17329 9001-10001

3 27 0457 1300

3 28 0458 0806

3 28 0912 1300



OBSERVATION PLOT FOR THE APPARITION OF 1970

360

8
1 %
‘i Ss
S
8
\\\ .
" ~
\ N
\\ <4
T N
on
Soa
f= 2.
2a
a - a
8 aD a
Mt ss
=
oO
Wt Bo
Oo
N
Ss
i=}
4
Oo
wo
2
8
°



-10

-08

fre) + nN
oS fo) co)

NOISSIWA 40 ALITIaVa0Ud

0.00

160

240 280 320 360

200

80 120

40

YEAR 1970

To (DEGREES)

Fig. 7

26


OATE OBSERVING JUPITER IN- | BURSTI- | FREQ. | JUPITER IO RANGE
PERIOD OBSER- TEN=| NESS RANGE | LONGITUDE
1968 VATIONS ISITY MHZ
9 9 1227 2545
9 10 1224 2237
9 10 2301 2309
9 10 2322 2545
9 14 1326 1407
9 it 1415 2540
9 12 1225 2025
912 2039 2232
9 12 2255 2538
9 13 1221 2535
9 14 12190 2534
9 15 1215 2009
915 2155 2528
9 16 1217 1928
9 16 2114 2525
917 1207 2522
9 18 1143 2436
919 1140 2445
9 20 1137 2512
9 21 1134 2500
9 22 1131 2433
9 23 1128 2435
9 24 1125 2436
9 25 11220 2434
9 26 1119 2026
9 26 2121 2444
9 27 1116 2430
9 28 1118 2446
3 29 1118 2442
9 30 41118 2439
10 4 41131 1450
10 4 1506 2236
10 14 2313 2436
10 2 1116 2432
10 3 4117 1915
10 3 2230 2425
10 4 1055 2423
10 5 1052 1745
1065 1808 2422
10 66 1049 2418
10 7 1046 2415
10 68 1043 1930
10 8 1945 2414
1069 1040 2408
10 10 1038 1230
10 11 1035 1230
10 12 4032 1230
*10 12 1230 1500
10 13 1029 1230
10 14 1026 1230
10 15 1023 1230
10 16 1020 1307
410 17 1017 «1230
10 18 1017 1230
10 19 10142 1225
10 20 1055 1230
10 21 1018 1230
10 22 1017 «1230

*

DENOTES SPECIAL OBSERVING PERIOD WHEN IO-RELATED EMISSIONS WERE POSSIBLE.



WARWICK, J. W.
W. T. KREISS

WARWICK, J. W.
G. A. DULK

WARWICK, J. W.
G. A. DULK

WARWICK, J. W.
G. A. DULK

and

1964

1965

1966

1968

REFERENCES

IGY Solar Activity Report No.

28, 2 November 1964,

National Academy of Sciences,
at High Altitude Observatory,

IGY Solar Activity Report No.

TGY World Data Center A

Boulder, Colorado 80302.

32, 16 August 1965,

National Academy of Sciences,
at High Altitude Observatory,

IGY Solar Activity Report No.

IGY World Data Center A

Boulder, Colorado 80302

34, 1 November 1966,

National Academy of Sciences,
at High Altitude Observatory,

IGY World Data Center A

Boulder, Colorado 80302.

World Data Center A, Upper Atmosphere Geophysics
Report UAG-3, ESSA Research Laboratories, Boulder,

Colorado 80302.



DATE OBSERVING JUPITER [N= |BURSTI= |FREQ. | JUPITER TO RANGE
PERIOD OBSER- |TEN- |NESS RANGE | LONGITUDE

19714 VATIONS SITY MHZ

* 2 14 1434 1755

2 45 4115 1300

2 16 1044 1300

2 17 1044 1300

218 1049 1300

219 1140 1360

2 20 1202 1259

2 24 0959 1330

2 23 0944 1300

2 24 0944 1300

2 25 1221 1300

2 26 0944 1300 | 0935 1100) 1 |WEAK 14-20 |233-7-28501 | 305.6-317-6

3 4 0944 1300

3.2 1035 1300

3.03 0748 1315 | 1059 1115) 4 |MODERATE|14-16 | 317.2-32609 | 254.6-256.9

gs 4 0954 1315 | 1033 1213) 2 |MODERATE|16-36 9201-15265 9404-10825

3.5 1047 «1300

3.8 0949 1652/1001 1126) 1 [WEAK 16-19 | 315.0- Goh | 183.7-195.8

3°09 0949 1310

3 10 0004 1310/1030 4230/ 2 |MODERATE|13-19 | 27327-34602 | 234.8-25108

3 14 0934 1150/1112 1315) 3 |WEAK 14-37 89.7-164.0 B4e2-10106

3 12 0949 1310

3.13 1024 1259

314 0958 1300

3.415 6949 1300

* 318 1039 1655 | 1340 1418) 2 |WEAK 24-34 1153. 3-176.3 89-5= 9408

3.19 0949 1300

3 20 1029 1330

3 24 1018 1330

3 22 0959 1350

3 23 1002 41354

3 24 0944 1350

3 25 0945 1350

* 3 25 1350 1625

3 26 0949 1350

3 26 0949 1350

3 27 1020 1330

3 28 1030 1330

3 29 0959 1350

3 30 0954 1350

331 0950 1350

G4 0959 1351

4 2 0949 1350

4 3 0933 1258

4 5 0954 1350

4 6 1001 1350

4 7 1003 1350

4 8 0949 13514

4 9 1005 1300

4 10 1004 1230

* 4 14 0502 1200 | 0634 0930) 3 [MODERATE |17-22 |27120- 1704 | 234.1-258.9

* 4 12 0646 1300 | 0834 0914/ 2 [MODERATE |16-37 |134.2-158.4 9406-10003

4 14 1003 1300

& 15 1023) 1301

4 16 0955 1243

4 24 0902 1350

4 25 0953 1230

15


DATE OBSERVING JUPITER IN= | BURSTI= | FREQ. | JUPITER TO RANGE
PERIOD OBSER- TEN-| NESS RANGE | LONGITUDE

1968 VATIONS SITY MHZ

12 16 0718 #1330) 1231 130 a | WEAK 18-27 | 263-8-281.9} 273.8-27861

12 17 0723 1330

12 18 0706 1330

1219 0723 1330

12 20 0654 1330

12 21 0650 1330

12 22 0656 1332

12 23 1017 «#1330

12 24 0640 1330

12 27 0635 1330

12 28 0632 1330

12 29 0627 1330

12 30 0704 1330

12 31 0633 1330

1969

1 2 1019 1330

1 3 0628 1330

1 4 0627 1330

1 4 1330 61500

165 0628 1330) 1044 113 41 | WEAK 11-19 | 330.1-358.5 ToS thet

1 6 0628 1330

1 7 0550 1330

1 10 0539 1330

441 0535 1333

112 0531 1330

143 0527 1330

114 0523 1330

144 1558 1800

4415 0519 1330) 0920 093 2 | MODERATE) 15-21 | 345.2-35103| 230.4-231.8
1408 115 2 | MODERATE 13-19 5005- 8002] 2457-25206

1 16 0518 1500) 0930 994 1 | SMOOTH 13-18 | 141.9-152.8 7503- 7708

117 0517 1330) 1023 112 2 | MODERATE! 12-19 | 324.5- 3.8] 286. 2-295.4

116 0518 1330

119 0518 1330

1 20 0518 1330

124 0517 +1330

1 22 0517 1330) 0902 1029 1 | WEAK 13-20 | 30827-35808) 212.4-224.2

1 23 0458 1330

1 24 0517 1330; 0808 101 1 | STRONG 13-26 | 2172-29208] 251.8-269.4
1103 114 3 | STRONG 13-19] 323.0-350.8| 276.5-283.0

1 25 0458 1337) 0823 104 2 | MODERATE} 12-18 1669-10504 97o 411820

1 26 0458 1330

1 27 0458 1330

1 28 0458 1330

1 29 0426 1330

1 30 0508 1330

431 0509 1330) 0826 101 2 | STRONG 13-28 | 202.6-270.3| 239. 0-254.8

24 0447 1330) 0527 054 1 | WEAK 13-18 | 245.0-255.3 57e2- 596
0740 0826 4 | WEAK 13-18 |} 325.4-353.2 7600- 82.5
1036 112 1 | SMOOTH 13-20 7108-10368) 10069-10804

2.2 0444 1330) 0437 050 3 | STRONG 11-20 5e5~- 2360) 25367-25708

2 3 0458 1330] 0931 100 2 | STRONG 12-20 | 333. 8-356.2| 138.9-144.1

24 0458 1330

2.5 0457 1330

2.6 0445 1330/ 0622 o71 2 | MODERATE] 15-20 | 311.5-346.0 208 10.9

27 0458 1352) 0937 110 1 | MODERATE) 11-30 | 220.0-275.6| 233.9-246.9



H
be
|
i
|
j
5
;--—————_|
a ae
iP) [= 19 [=] rey 2
N NX 4 = o 5
°

NOISSIWS 40 ALITIavd0ud

280

320

80 120 160 200 240

40

YEAR 1969

Io (DEGREES)

Fig. 2.

21


REPORT UAG - 25

WORLD DATA CENTER A
for

Solar-Terrestrial Physics

OBSERVATIONS OF JUPITER’S SPORADIC RADIO
EMISSION IN THE RANGE 7.6-41 MHz
9 SEPTEMBER 1968 THROUGH 9 DECEMBER 1971

Ml,
ZINN

FEBRUARY 1973



DATE OBSERVING IN- TO RANGE
PERIOD TEN- LONGITUDE
1969 SITY
5 18 0305 0856
5 18 2024 2700
519 0300 0858
5 20 0305 0933
5 21 0019 0300
5 21 0300 0858
5 22 0017 0300 3 13006-15107 | 10107-10607
5 22 0300 0914
5 23 0305 0858
5 24 0203 0732
5 25 0200 0715
5 26 0205 0715
5 27 0204 0715
5 28 0104 0715
5 29 0204 0715
5 30 0252 0715
5 31 0203 0724
6 1 0204 0715
6 2 0205 0715
6 3 0204 0715
6 4 0206 0715
6 5 0204 0715 1 160 6 4-182.8 8904 94.7
6 6 0204 0715
6 7 a200 0715
6 8 0200 0715
6 9 0203 0715
6 10 0204 0715
6 i1 0206 0715
6 12 0204 0715
6 13 0205 0505
6 13 0530 0715
6 14 0155 07415
6 15 0204 0715
6 16 0203 0715
6 17 0201 0546
6 18 0205 0640
6 19 0205 0641
6 20 0204 0715
6 24 0205 0620
6 22 0204 0600
6 22 2003 2600 1 139.2-15703 | 10220-10602
6 23 0200 0620
6 24 0108 0619
6 25 0206 0620
6 26 0203 0600
6 27 0204 0620
6 26 0232 0610
6 29 0231 0620
6 29 2104 2600 2 147 65-162 04 93.9- 9704
6 30 0200 0620
7 1 0249 0614
7 2 0232 0620
7 3 0247 0614
7 4 0236 0515
7 5 0233 0516
7 6 0202 0515
*7 6 2205 2600



DATE OBSERVING JUPITER IN- | BURSTI- | FREQ. | JUPITER IO RANGE

PERIOD OBSER= TEN-| NESS RANGE | LONGITUDE
1969 VATIONS SIty MHZ '
3 29 0214 41131
3 30 0205 1431
3 31 0205 1134
1 0204 1133
2 0231 0455 I
2 0503 1157
3 0215 1130
4 g211 1100
5 0220 0238
5 0300 1129
6 0215 0612
6 0725 0935
6 0945 1119
7 0205 1134
8 0206 1134
] 0209 .1028
9 2300 2600

10 | 0200 0940
10 | 1000 1136
44] 0206 1134

12] 0213 1136 |
13] 0220 1137
14 | 0205 1133
15 | 0205 1128
16} 0205 1135
17 0108 0300
47] 0317 1130
18 | 0205 1138
19| 0220 1130
20 0224 41134) 0607 0627 2 | MODERATE) 25-36 | 140.9-153-0} 103.4-106-2
21 0205 41132
22 0205 1127
23 | 0205 1123 |
24 | 0205 1119 : |
25] 0205 1144
26 | 0215 1110
27] 0205 1106) 0625 0754 2| STRONG | 19-35| 125.8-182.1| 90.9-104.0
28] 0305 0936
29] 0305 0956
30] 0311 0958

PREPRESS PRE PEP PEPE EE EEE PEE

1| 0305 0956 |
0305 1000 1
3} 0306 1001 |
4 | 0306 1007 |
5 | 0305 1003 |
6 | 0305 0955 |
7 | 0305 1007 }
8] 0305 0954 |
9| 0305 1000
10 | 0305 1000

at 0305 0955
12 0305 1000
13 0305 0930
14 0305 0958
415 0317 «0933
16 0305 0858
417 0305 0900

RRUURU RU RU RU RU RU RG RU RU RU RU RC RU RU

i
iy
|


EMISSION PLOT FOR THE APPARITION OF 1970

360 ery
330+ of ee 4
300b oon ee on | J
J
270 - _ J
240} — 4
210b-
180F
150-—
120
Lh. —T 4
gob — _
60p 1 a
30+ mo Sa J
gheetsetertrrivetee ti ti tii]

0 30 60 90 120 150 180 210 240 270 300 330 360
LCM (DEGREES)
Fig. 9.

28


Io

360

300

120

60

To, LCM PROBABILITY CONTOUR MAP, YEAR 1970, CONTOUR INTERVAL .10

A
b.--—- _ ae
ae |
L.

= q
L

ees ee er OO
0 60 120 180 240 300 360

LCM (DEGREES)
Fig. 8,

27


DATE OBSERVING IN- | BURSTI- | FREQ. I0 RANGE
PERIOD TEN-| NESS RANGE | LONGITUDE
1968 SITY MHZ
10 23 0959 1300
10 24 0956 1300
10 25 0953 1300
10 27 0948 1300
10 28 1013 11514
10 28 1206 1300
10 29 0944 1300
10 30 0948 1300
#10 30 1300 1520
10 34 1032 1300 2 | WEAK 13-17 | 127-0-151-8| 266-2-272.0
2 | WEAK 13-17 | 191.1-200.1 | 281. 2-283.3
4404 0942 1300
41 2 0943 1300
11 3 0942 1300
414i 4% 0943 1300
1105 0942 1300
ii 6 0918 1330
1447 0914 1330
11 8 0911 1330
11 9 1018 1330
11 10 0908 1400
ai 41 1022 1330
44 12 0911 1330
*11 12 1330 1500
11 13 0924 1330
*11 13 1500 1800
11°14 0907 1330
41 15 0908 1330
1i 16 0908 1330
11°17 0908 1350
441 18 0908 1330
11°19 0907 1335
41 20 0834 1330
1121 0907 1330
41 22 0828 1334
11 23 0825 1342
11 24 0623 1330
11.25 0819 1330
11 26 0816 1330
11 27 0812 1330
11 28 0809 1330
41 29 0808 1330
12014 0814 1330 3 | MODERATE) 16-36 | 143. 4-181.5 9706-10605
12 2 0807 1330
12 3 0808 1330
#12 3 1330 1800
12 4 0807 1330
1205 0945 1330
12° 6 0743 1330
12 7 0739 «1330
12.8 0736 1330
12 9 0732 1330
12 10 0729 1330
12 41 0941 1330
12 12 o722 1329
12 13 0718 1330
12 14 0718 1330
12 415 0726 1330



DATE OBSERVING JUPITER IN- | BURSTI= | FREQ. | JUPITER TO RANGE

1974 VATIONS ISITY MHZ

PERIOD OBSER~ TEN-| NESS RANGE | LONGITUDE

8 29 0200 0500

8 30 0200 0500) 0300 0332 2 | MODERATE] 31-36 | 132.0-15104 10206-10723

8 34 0130 a500

4 0130 0430
2 0130 0430
3 0130 0430
4 0130 0430
5 0000 0430
6 0130 0430
7 0130 0430
8 0130 0430
3 0130 0400

10 0130 0400
41 0130 0400
12 0130 0400
13 0130 0400
14 0130 0400
15 0130 0400
16 0130 0400
17 0130 0400
18 0100 0330
419 0100 0330
20 0100 0330
et 1900 2220
21 0100 0330
22 1900 2330
23 0000 0330
24 0100 0330
25 0100 0330
26 0100 0330
27 0100 o300
26 0100 o300
2g 2000 2330
30 ooed a300

1 0100 0300
2 0100 0300
3 0100 0300
4 0100 o300
5 0100 0300
6 0100 0230
7 2300 2330
8 o000 0300
9 0030 0230
10 0030 90230
14 0030 0230
12 0030 O230
13 0030 0230
14 0030 0230
15 0030 o200
16 0030 0200
17 0030 a200

18”| 0030 o200
19 0030 0200
20 0030 o200
at 0030 a200
22 0030 0200
23 0030 0200

18



NOISSINI AO ALITIVPVIOdd

rey Q ry ° 3
2 ° 08 8 of e® && & 8 § og
as + 8 q p74 o |”
<7 a ie o Se o
Ts. - y~N. — lc. oa oa
NS 2 4 244
~ °°
5 2
-
s co]
— = Sw
a ~ oy
/ a
4 [> a
ca su os
8 Ly" c “a
ue << \ —
ye << \
| x8 N » ? p es
Se \ SAL NS f] ~~. ~ oO
gz N > SY ‘. . 3
S > N.
s \ q g SN
[es / x i NK lo
we \ q m Ts 518
ES > ° X © 7) J
Se ? = A r gz ao 2
4 é L f= 2 | al | al | °
cS a on 8 gs 2 °f8 eg BO?

NOISSINI 4O ALITIGVIONd

Fig, 16


Publication Notice

WORLD DATA CENTER A for SOLAR-TERRESTRIAL PHYSICS REPORT UAG
(Prepared by World Data Center A for Solar-Terrestrial Physics, NOAA, Boulder, Colorado)

These reports are for sale through the National Climatic Center, Federal Building, Asheville, NC 28801, Attn: Publications.
Subscription price: $9.00 a year; $2.50 additional for foreign mailings single copy price varies, These reports are issued on
an irregular basis with 6 to 12 reports being issued each year. Therefore, in some years the single copy rate will be less than
the subscription price, and in some years the single copy rate will be more than the subscription price. Make checks and money
orders payable to: Department of Commerce, NOAA.

Upper Atmosphere Geophysics Report UAG-1, "IQSY Night Airglow Data" by L. L. Smith, F. E. Roach and J. M. McKennan of Aeronomy
Laboratory, ESSA Research Laboratories, July 1968, single copy price $1.75.

Upper Atmosphere Geophysics Report UAG-2, "A Reevaluation of Solar Flares, 1964-1966" by Helen W. Dodson and E. Ruth Hedeman
of McMath-Hulbert Observatory, The University of Michigan, August 1968, single copy price 30 cents.

Upper Atmosphere Geophysics Report UAG-3, "Observations of Jupiter's Sporadic Radio Emission in the Range 7.6-41 MHz, 6 July
1966 through 8 September 1968" by James W. Warwick and George A. Dulk, Department of Astro-Geophysics, University of Colorado,
October 1968, single copy price 30 cents.

Upper Atmosphere Geophysics Report UAG-4, “Abbreviated Calendar Record 1966-1967" by J. Virginia Lincoln, Hope I. Leighton and
Dorothy K. Kropp, Aeronomy and Space Data Center, Space Disturbances Laboratory, ESSA Research Laboratories, January 1969,
single copy price $1.25.

Upper Atmosphere Geophysics Report UAG-5, "Data on Solar Event of May 23, 1967 and its Geophysical Effects" compiled by
J. Virginia Lincoin, World Data Center A, Upper Atmosphere Geophysics, ESSA, February 1969, single copy price 65 cents.

Upper Atmosphere Geophysics Report UAG-6, "International Geophysical Calendars 1957-1969" by A. H, Shapley and J. Virginia
Lincoln, ESSA Research Laboratories, March 1969, single copy price 30 cents.

Upper Atmosphere Geophysics Report UAG-7, "Observations of the Solar Electron Corona: February 1964-January 1968" by Richard
T. Hansen, High Altitude Observatory, Boulder, Colorado and Kamuela, Hawaii, October 1969, single copy price 15 cents.

Upper Atmosphere Geophysics Report UAG-8, “Data on Solar Geophysical Activity October 24-November 6, 1968", Parts 1 and 2,
compiled by J. Virginia Lincoln, World Data Center A, Upper Atmosphere Geophysics, ESSA, March 1970, single copy price
(includes Parts 1 and 2) $1.75.

Upper Atmosphere Geophysics Report UAG-9, “Data on Cosmic Ray Event of November 18, 1968 and Associated Phenomena" compiled
by J. Virginia Lincoln, World Data Center A, Upper Atmosphere Geophysics, ESSA, April 1970, single copy price 55 cents.

Upper Atmosphere Geophysics Report UAG-10, "Atlas of Ionograms" edited by A. H. Shapley, ESSA Research Laboratories, May 1970,
single copy price $1.50.

Upper Atmosphere Geophysics Report UAG-11, "Catalogue of Data on Solar-Terrestrial Physics" compiled by J. Virginia Lincoln
and H, Patricia Smith, World Data Center A, Upper Atmosphere Geophysics, ESSA, June 1970, single copy price $1.50.

Upper Atmosphere Geophysics Report UAG-12, "Solar-Geophysical Activity Associated with the Major Geomagnetic Storm of March 8,
1970", Parts 1, 2 and 3, compiled by J. Virginia Lincoln and Dale 8. Bucknam, World Data Center A, Upper Atmosphere Geophysics ,
NOAA, April 1971, single copy price (includes Parts 1-3) $3.00.

Upper Atmosphere Geophysics Report UAG-13, "Data on the Solar Proton Event of November 2, 1969 through the Geomagnetic Storm
of November 8-10, 1969" compiled by Dale B. Bucknam and J. Virginia Lincoln, World Data Center A, Upper Atmosphere Geophysics,
NOAA, May 1971, single copy price 50 cents.

Upper Atmosphere Geophysics Report UAG-14, “An Experimental Comprehensive Flare Index and its Derivation for ‘Major! Flares
1955-1969" by Helen W. Dodson and E. Ruth Hedeman, McMath-Hulbert Observatory, University of Michigan, July 1971, single copy
price 30 cents.

Upper Atmosphere Geophysics Report UAG-15, "Catalogue of Data on Solar-Terrestrial Physics" prepared by Research Laboratories,
NOAA, Boulder, Colorado, July 1971, single copy price $1.50. (Supersedes Report UAG-11, June 1970,

Upper Atmosphere Geophysics Report UAG-16, "Temporal Development of the Geographical Distribution of Auroral Absorption for
30 Substorm Events in each of IQSY (1964-65) and IASY (1969)" by F. T. Berkey, V. M. Driatskiy, K. Henriksen, D. H. Jelly,
T. I, Shchuka, A. Theander and J. Yliniemi, September 1971, single copy price 70 cents.

Upper Atmosphere Geophysics Report UAG-17, “Ionospheric Drift Velocity Measurements at Jicamarca, Peru (July 1967 - March 1970)"
by Ben B. Balsley, Aeronomy Laboratory, National Oceanic and Atmospheric Administration, Boulder, Colorado, and Ronald F
Woodman, Jicamarca Radar Observatory, Instituto Geofisico del Perd, Lima, Peru, October 1971, single copy price 35 cents.

Upper Atmosphere Geophysics Report UAG-18, "A Study of Polar Cap and Auroral Zone Magnetic Variations" by K. Kawasaki and
S. I, Akasofu, Geophysical Institute, University of Alaska, June 1972, single copy price 20 cents.

Upper Atmosphere Geophysics Report UAG-19, "Reevaluation of Solar Flares 1967" by Helen W. Dodson and E. Ruth Hedeman of
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1972, single copy price 15 cents.

Report UAG-20, "Catalogue of Data on Solar-Terrestrial Physics", prepared by Environmental Data Service, NOAA, Boulder, Colorado,
October 1972, single copy price $1.50. (Supersedes Report UAG-15, July 1971.)

Report UAG-21, "Preliminary Compilation of Data for Retrospective World Interval July 26 - August 14, 1972" compiled by
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Report UAG-22, "Auroral Electrojet Magnetic Activity Indices (AE) for 1970" by Joe Haskell Allen, National Geophysical and
Solar-Terrestrial Data Center, Environmental Data Service, November 1972, single copy price 75 cents.

Report UAG-23, "U.R.S.I. Handbook of Ionogram Interpretation and Reduction", Second Edition, November 1972, edited by W. R.
Piggott, Radio and Space Research Station, Slough U.K., and K. Rawer, Arbeitsgruppe fiir Physikalische Weltraumforschung,
Freiburg, G.F.R., November 1972, single copy price $1.75.

Report UAG-24, "Data on Solar-Geophysical Activity Associated with the Major Ground Level Cosmic Ray Events of 24 January
and 1 September 1971", Parts 1 and 2, compiled by Helen E. Coffey. and J. Virginia Lincoln, World Data Center A for Solar-
Terrestrial Physics, December 1972, single copy price (includes Parts 1 and 2) $2.00.

USCOMM-NOAA~ASHEVILLE, NC-2~73-600

|
|


OBSERVATION PLOT FOR THE APPARITION OF 1969

NN

\

SEE

ei i

NAN

AN i
ve AANA

NA

Ni i

AW

To

AN

a \
Ni

ZEEE

NANA

360

330

300

240 270

180 210
LCM (DEGREES)

120 150

90

60

Fig. 5.

24




DATE OBSERVING JUPITER IN- | BURSTI- | FREQ. | JUPITER TO RANGE
PERIOD OBSER- TEN-| NESS RANGE | LONGITUDE
1969 VATIONS SITY MHZ

10 22 1616 2302
10 23 1615 2124
410 24 1515 2300
10 25 1614 2303
10 26 1734 2358
10 27 1648 2301
10 28 1609 2240 '
10 29 1615 2300
10 30 1715 «2253 |
10 31 1617 2258

42 2 1556 1830

141i 2 1511 2259

11 3 1617 2302

41 4% 1627 2330

41 5 1616 2300

11 6 1615 23014

11° 7 1615 2258

11 8 1615 2305

1109 1555 2259
*41 29 1615 1900 ‘
¥12 4 1058 1400 }
*12 9 2100 2147

1970

9g 1120 1500
10 1100 1457
11 1125 1459
13 1125 1500 '
14 1047 1500 |
15 1104 1500
16 1112 1500
17 11041 1503
18 1114 1500
19 1104 1500
1102 1500
21 1058 1500
22 1058 1500 }
23 1116 1500 i
24 ag07 1500
26 1351 1500 |
27 1221 1500
28 0834 1400
29 1219 1400
30 0630 1400
31 0616 1400

BE PRB RRP REE ER EEE PR
y
°

24 0753 1402 if
2 3 09041 41400/ 1110 1209 1/| WEAK 20-31] 23002-26005] 23507-24207 |
204 0733 1430 t
2.5 0830 1400 i
2 6 1025 1400

27 0818 1400

2 8 0759 1417 {
29 0850 1400 f
2 10 0625 1506 t
241 0628 1400 |

il



DATE OBSERVING JUPITER IN | BURSTI- | FREQ. | JUPITER TO RANGE
PERIOD OBSER- TEN-| NESS RANGE | LONGITUDE
1970 VATIONS SITY MHZ

414 0516 1244
4 12 0518 1240
413 0615 1300
4 1G 0519 1300
4 15 0418 1300
4 16 0418 1300) 0712 0755 4 | WEAK 24-37 | 13302-15902 9Bo 3-10404
4 17 0438 1300
4 18 0418 1234
4 19 0418 1300
4% 20 0418 1300
4 21 0418 1200
4% 22 0448 1200
4 23 0418 1200) 0814 0905 4 | MODERATE] 20-35 | 145.4-17603 9203- 99.5
4 24 0418 1200
4& 25 0418 1200
4 26 0418 1200
4 27 0418 1200
4 28 0428 1200
& 29 0416 1200
4 30 0418 1200
1 0418 1200
2 0418 41200
3 0418 1200
4 0418 1128
5 0303 0657
6 0316 0700
7 0400 0713
8 0319 0658
9 0302 0737

10 0346 0735
a4 0332 07314
12 0324 0735
13 0333 3729
14 0323 0736
15 0323 0732
0317 «0734
17 0316 0734
18 0316 0718
19 0324 0727
20 0333 0730
21 0330 0730
22 0316 0734
23 0149 1000
24 0118 0634
25 0051 1000
26 0033 0900
27 0021 0955
268 0016 0958
29 0018 0958
30 o027 1000
34 0016 1000

RR Ronu eeu u RU RU RU RU RU RU RU Uru LU RU LU RC RU RC EC RCECRUEC)
i
o

6 2 0019 1003
6 3 0015 1003
6 4 0017 0900
6 5 0227 0856
6 6 0230 0900
6 7 0227 0857



WORLD DATA CENTER A
for
Solar-Terrestrial Physics

REPORT UAG - 25

OBSERVATIONS OF JUPITER’S SPORADIC RADIO
EMISSION IN THE RANGE 7.6—41 MHz
9 SEPTEMBER 1968 THROUGH 9 DECEMBER 1971

by

James W. Warwick,George A. Dulk and David G. Swann

Department of Astro—Geophysics
University of Colorado

Boulder, Colorado
Prepared by World Data Center A for | iN

Solar-Terrestrial Physics, NOAA, Boulder, Colorado
and published by

U.S. DEPARTMENT OF COMMERCE
NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION

ENVIRONMENTAL DATA SERVICE
Asheville, North Carolina, USA 28801

FEBRUARY 1973



OBSERVATION PLOT FOR THE APPARITION OF 1971

360

300 330

270

210 240

150 180
LCM (DEGREES)

120

90

60

30

15.

Fig.

34


To, LCM PROBABILITY CONTOUR MAP, YEAR 1969, CONTOUR INTERVAL -10

360 pep re et ror

300 de —-4 ~~

240

= is

180

ns re

120

60

ne eo
1

rn oe

~" oA
ofa dd d

) 60 120 180 240 300 360

LCM (DEGREES)
Fig. 3.

22


WORLD DATA CENTER A

National Academy of Sciences
2101 Constitution Avenue, N. W. Washington, D. C. U.S.A., 20418

World Data Center A consists of the Coordination Office

and eight subcenters:

World Data Center A
Coordination Office

National Academy of Sciences
2101 Constitution Avenue, N.W.
Washington, D. C., U.S.A. 20418
Telephone (202) 961-1478

Solar and Interplanetary Phenomena, Meteorology (and Nuclear Radiation):
Ionospheric Phenomena, Flare-Associated World Data Center A:
Events, Geomagnetic Variations, Magnetospheric Meteorology
and Interplanetary Magnetic Phenomena, National Climatic Center
Aurora, Cosmic Rays, Airglow: Federal Building
World Data Center A Asheville, North Carolina, U.S.A. 28801
for Solar-Terrestrial Physics Telephone (704) 254-0961
National Oceanic and Atmospheric
Administration
Boulder, Colorado, U.S.A. 80302 Oceanography:
Telephone (303) 499-1000 Ext. 6467 World Data Center A:
Oceanography
Geomagnetism, Seismology, Gravity (and National Oceanic and
Upper Mantle Project Archives): Atmospheric Administration
World Data Center A: Rockville, Maryland, U.S.A. 20852
Geomagnetism, Seismology and Gravity Telephone (202) 426-9052

Environmental Data Service, NOAA

Boulder, Colorado, U.S.A. 80302

Telephone (303) 499-1000 Ext. 6311 Rockets and Satellites:
World Data Center A:
Rockets and Satellites

Glaciology: Goddard Space Flight Center
World Data Center A: Code 601
Glaciology Greenbelt, Maryland, U.S.A. 20771
U. S. Geological Survey Telephone (301) 982-6695

1305 Tacoma Avenue South
Tacoma, Washington, U.S.A. 98402

Telephone: (206) 383-2861 Ext. 318 Tsunami:
World Data Center A:
Tsunami
Longitude and Latitude: National Oceanic and Atmospheric
World Data Center A: Administration
Longitude and Latitude P.0. Box 3887
U. S. Naval Observatory Honolulu, Hawaii, U.S.A. 96812
Washington, D. C., U.S.A. 20390 Telephone (808) 546-5698

Telephone (202) 698-8422

Notes:

(1) World Data Centers conduct international exchange of geophysical observations in accordance
with the principles set forth by the International Council of Scientific Unions. WDC-A is
established in the United States under the auspices of the National Academy of Sciences.

(2) Communications regarding data interchange matters in general and World Data Center A as a
whole should be addressed to: World Data Center A, Coordination Office (see address above).

(3) Inquiries and communications concerning data in specific disciplines should be addressed to
the appropriate subcenter listed above.



360

+

02

(=)

T ——]
eee g
Ls :
_+—-
Ne:
<p Tid oo
of
=| “8
i
ed
aan
8

-10

-08

fey
fo}

NOISSIWS 40 ALITIaVa0ud

Fig. ll.

30


UN

50

-40

[oy
i)

° (=)
a a

NOISSIWA 40 ALITIava0ud

0.00%

120 160 200 240 280 320 360
LCM (DEGREES) YEAR 1970

80

40

Fig. 6.

25


DATE OBSERVING JUPITER IN- | BURSTI- | FREQ. | JUPITER IO RANGE
PERIOD OBSER- TEN-| NESS RANGE | LONGITUDE

1969 VATIONS SITY MHZ
7 7 0200 0514
7 8 0303 0515
7 9 0232 0515
7 10 0234 0515
7 it 0231 0515
7 12 0232 0517
7 13 0232 0515
7 14 0231 0515
7 15 0234 0515
7 16 0232 0516
7 17 0225 0517
7 18 0230 O511
719 0238 0515
7 20 0255 0515
7 21 0230 0534
7 22 0200 0417
7 23 0201 0415
7 24 0200 0415
7 24 1643 2000
7 25 0200 0430
7 26 0202 0415
7 26 2215 2600
7 27 0200 0432
7 29 0203 0415
7 30 0200 0414
7 31 0203 0415
61 0200 0415
8 2 0203 0415
6 2 2230 2600
8 3 0200 0415
8 4 0203 0415
85 0245 0449
8 6 o201 0315
8 7 0204 0315
6 8 0200 0315
89 0204 0345
8 10 0200 0315
8 41 0203 0315
8 12 0151 0315
8 13 0205 0317
8 14 0204 0315
815 0158 0314
8 16 0105 0315
8 17 0203 0315
8 18 0200 0315
8 19 0206 0315
8 20 0151 0315
8 20 1630 2000
8 21 0200 0344
8 22 0148 0315
8 23 0200 0315
& 24 0157 0315
8 25 0202 0238
8 26 0200 0318
8 27 0200 9315
8 28 0200 0315
8 29 0152 0315
8 30 0200 0317

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DATE OBSERVING JUPITER IN- | BURSTI=- | FREQ. | JUPITER I0 RANGE
PERIOD OBSER- TEN~| NESS RANGE | LONGITUDE

1970 VATIONS SITY MHZ
212 0622 1400
2 13 0854 1400
214 0618 1359
2415 0826 1400
2 16 0616 1400
217 0818 1400
218 0718 1400
2 18 1400 1700
219 0725 1400
2 20 0720 1400
2 21 o717 «1400
2 22 0734 1400
2 23 0718 1400
2 24 0718 1400
225 0724 1330
2 26 0530 1300
2 27 0719 #1312
2 28 0718 1235
34 0718 1300
3 2 0716 1300
3.3 0718 1300
3.4 0718 «1306
3.6 0842 1300
3 7 0720 1300
3.8 0719 1324
309 0718 «1300
3 10 0718 1300
314 0716 1230
3 12 0718 1300
313 0718 1300
3 14 0718 1300
3.15 0718 #1300
3.16 0718 #1300
3.17 0718 1300
3.18 0810 1300
3.19 0718 1300
3 20 0718 1300
3 24 0718 #1300
3 22 0754 1300
3 23 0718 #1300
3 24 0518 1300
3.25 0620 1300
3 26 0535 1300
3 27 0518 1200
3 28 a527 1300
3.29 0516 1400
3 30 0638 1300
4 1 0518 1300
4 2 0518 1300
4 3 0518 1300
4 & 0623 1300
4 5 0518 1300
4 6 0518 1300
4 7 0600 1300
& 8B 0518 1300
4 9 0518 1300
4 10 0529 1300

12

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