OATE | OBSERVING | yuPTTER |tN- [euRsTI- |FREQ. | yUPITER TO RANGE

PERIOD OBSER- ITEN-|NESS RANGE | LONGITUDE ;
1973 VATIONS SITY MHZ i
12 13 |-6030 0200 |
12 14 | 0000 0330 |
12 15 0000 0330 {
12 16 | 0000 aza0 |
12 17 | coo0 0330 |
12 18 | 0000 0330 |
412.19 | 000 0330 |
12 20 | co00 0300 }
12 21 | codo 0130
12 22 | 0000 0300 |
12 23 | 0000 0300 |
12 24 | Gooo 0300 |
12 25 | 0000 0300 |
12 26 6030 o300 t
12 27 | 0000 0300 i
12 28 | 0000 0300
12 29 | 0000 0300 |
42 30 | oo00 o300 i
12 31 | 0000 0230 ;
1974 |
1 4 | 0000 0230) op02 Goze} 2 jsHooTH 26-38 | 14124-15721 | 104.3-108.0 |
4 2 | Go00 0230 |
1 3 0000 0230) 0016 9054 1 |SMOOTH 26-40 9065-11364 | 15208-15822 I
1 4 | 00G0 0230
1 5 | 0000 0100 |
1 6 | 0000 0230 {
1 7 | 0000 0230 | 0024 0048) 1 |MODERATE|13-23 | 336.4-350.9 | 24720-25003
1 6 0000 0230] 0032 0135) 2 |smooTH 18-36 |131.5-169.6 91.3-100.2
1 9 | 0000 a230
140 | 0000 0230
141 0000 0200
112 | co00 o200
113 0000 d200 i
114 0000 o200 t
115 | 0000 0200 |
1 16 | 0000 0200 i
117 0000 9200 1
118 | 1530 2600 |
1419 | 1530 2600
1 20 1500 2600
1 21 | 1500 2530
1 22 1500 2530
123 | 1500 2535 |
1 24 1500 2530
1 25 1500 2530
126 | 1500 2530
1 27 1500 2530
1 28 | 1430 2530
129 | 1430 2530
1 30 1430 2530
131 | 1430 2509
264 1430 2500] 2011 2106) 2 |smMooTH 18-37 |131.1-16464 9548-10326
2 2 | 1630 2500
2 3 1430 2500
2 4 | 1430 2560
2 5 | 1430 2500

16

|


To, LCM PROBABILITY CONTOUR MAP, YEAR 1974, CONTOUR INTERVAL .10

360

300

B

240

180

120

°

60 120 180 240 300 360
LCM (DEGREES)
Fig, 13,

37



To

EMISSION PLOT FOR THE APPARITION OF 1973

360 peer

; + nal Aa a A
330 F 4 ]
300 f
=
2705 =
| 7
Ph a be es
- — — oe
210
— 7 7
180 —
— _—
150 —T +4
5 A —
120
= | ec L L— 7
90 <2 -__4mfe
a
60 -— -
L -— od - 4
30 E
0 4. 4. L. A. ”
0 30 60 90 120 150 180 210 240 270 300 330 360

LCM (DEGREES)
Fig. 9.

33



ERRATA 10 REPORT UAG-25

To, LCM PROBABILITY CONTOUR MAP, YEAR 1969. CONTOUR INTERVAL .10
360 be

300 +

240

180
To

120 £

60

fy -

ae)

60 120 180 240 300 360
LCM (DEGREES)

fo)

Fig. 18.

42



DATE OBSERVING JUPITER IN=- | BURSTI- | FREQ. | JUPITER TO RANGE
PERIOO OBSER- TEN-) NESS RANGE | LONGITUDE
1972 VATIONS SITY MHZ

42 31 1500 2430

1973
2 2127 2430
3 1430 2430
4 1430 2430) 2314 232 2 | SMOOTH 25-32 | 150.2-154.5 | 103.2-10401
5 4430 2400
6 1430 2400
7 1430 2400
8 1430 2400
9 1430 2400

19 1430 2400
44 1400 2400
12 4400 2400
13 1400 1709
15 1558 2400
1400 2330
17 1400 2330
18 1400 2330
19 14400 23390
20 1330 2330
24 1330 2330
22 1330 62330
23 1330 2330
24 1530 2330
26 2145 2330
27 1330 62300
28 1330 2300
29 1557 2300
30 1330 2300
34 1300 2300

PR PP PRE RE RB REP BRP PBB EPR
i"
o

a 1300 2360
2 1600 2300
3 1300 2300
4 1300 2300
5 1300 2300) 1835 2015 2 |MODERATE| 25-40 | 11200-17204 87239-10200
6 1300 2230
7 1300 2239
8 1300 . 2230
9 1230 ©2230

10 1230 2230
ai 1230 2230
12 1230 2230
1230 ©1630
14 1230 1400
15 1230 0 61400
16 1230 61400
17 1230 «14090
18 1230 1330
19 1200 1330
24 1200 1330
24 1200 1330
25 1200 1330
26 1200 1330
27 1200 1330
28 1130 1330

NAN ARA AAA AAARAAAANAANNNAWD
b
w

bs
fa

4430 1330

10



UAG-33

UAG-34

UAG-35

UAG-36

UAG-37

UAG-38

UAG-39

UAG-40

UAG-41

“Auroral Electrojet Magnetic Activity Indices AE(10) for 1967", by Joe Haskell Allen, Carl
C. Abston and Leslie D. Morris, National Geophysical and Solar-Terrestrial Data Center,
Environmental Data Service, May 1974, 142 pages, price 75 cents.

"Absorption Data for the IGY/IGC and IQSY", compiled and edited by A. H. Shapley, National
Geophysical and Solar-Terrestrial Data Center, NOAA, Boulder, Colorado, U.S.A., W. R.

Piggott, Science Research Council, Slough, U.K., and K. Rawer, Arbeitsgruppe fiir Physikalische
Weltraumforschung, Freiburg, G.F.R., June 1974, 381 pages, price $2.00.

"Catalogue of Digital Geomagnetic Variation Data at World Data Center A for Solar-Terrestrial
Physics", prepared by Environmental Data Service, NOAA, Boulder, Colorado, July 1974, 20 pages,
price 20 cents.

"An Atlas of Extreme Ultraviolet Flashes of Solar Flares Observed Via Sudden Frequency Devia-
tions During the ATM-SKYLAB Missions", by R. F. Donnelly and E. L. Berger, NOAA Space Environ-
ment Laboratory, Lt. J. D. Busman, NOAA Commissioned Corps, B. Henson, NASA Marshall Space
Flight Center, T. B. Jones, University of Leicester, UK, G. M. Lerfald, NOAA Wave Propagation
Laboratory, K. Najita, University of Hawaii, W. M. Retallack, NOAA Space Environment Laboratory,
and W. J. Wagner, Sacramento Peak Observatory, October 1974, 95 pages, price 55 cents.

“Auroral Electrojet Magnetic Activity Indices AE(10) for 1966", by Joe Haskell Allen, Carl C.
Abston and Leslie D. Morris, National Geophysical and Solar-Terrestrial Data Center, Environ-
mental Data Service, December 1974, 142 pages, price 75 cents.

"Master Station List for Solar-Terrestrial Physics Data at WDC-A for Solar-Terrestrial Physics",
by R. W. Buhmann, World Data Center A for Solar-Terrestrial Physics, Juan D. Roederer, Univer-
sity of Denver, Denver, Colorado, M. A. Shea and D. F. Smart, A.F.C.R.L., Hanscom AFB, Massa~
chusetts, December 1974, 110 pages, price $1.60.

“Auroral Electrojet Magnetic Activity Indices AE(11) for 1971", by Joe Haskell Allen, Carl C.
Abston and Leslie D. Morris, National Geophysical and Solar-Terrestrial Data Center, Environ-
mental Data Service, February 1975, 144 pages, price $2.05.

"H-Alpha Synoptic Charts of Solar Activity For the Period of Skylab Observations, May, 1973-
March, 1974", by Patrick S. McIntosh, NOAA Environmental Research Laboratory, February 1975,
32 pages, price 56 cents.

"H-Alpha Synoptic Charts of Solar Activity Durina the First Year of Solar Cycle 20 October,
1964 - August, 1965", by Patrick S. McIntosh, NOAA Environmental Research Laboratory, and
Jerome T. Nolte, American Science and Engineering, Cambridge, Massachusetts, March, 1975,
25 pages, price 48 cents.

USCOMM-NOAA-ASHEVILLE~-4-28-75--600



UAG Series of Reports
Prepared by World Data Center A for Solar-Terrestrial Physics, NOAA, Boulder, Colorado, U.S.A.

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 mailing; 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 check or money
order payable to: Department of Commerce, NOAA.

Some issues are now out of print and are available only on microfiche as indicated. Requests for micro-
fiche should be sent to World Data Center A for Solar-Terrestrial Physics, NOAA, Boulder, Co 80302,
with check or money order made payable to Department of Commerce, NOAA.

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, 305 pages, price $1.75.

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, 28 pages, price
30 cents.

UAG-3 "Observations of Jupiter's Sporadic Radio Emission in the Range 7.6-41 MHz, 6 duly 1966
through 8 September 1968", by James W. Warwick and George A. Dulk, Department of Astro-
Geophysics, University of Colorado, October 1968, 35 pages, microfiche only, price 45 cents.

UAG-4 “Abbreviated Calendar Record 1966-1967", by J. Virginia Lincoln, Hope I. Leighton and
Dorothy K. Kropp of Aeronomy and Space Data Center, Space Disturbances Laboratory, ESSA
Research Laboratories, January 1969, 170 pages, price $1.25.

UAG-5 "Data on Solar Event of May 23, 1967 and its Geophysical Effects", compiled by J. Virginia
Lincoln, World Data Center A, Upper Atmosphere Geophysics, ESSA, February 1969, 120 pages,
iprice 65 cents.

UAG-6 "International Geophysical Calendars 1957-1969", by A. H. Shapley and J. Virginia Lincoln,
ESSA Research Laboratories, March 1969, 25 pages, price 30 cents.

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, 12 pages,
price 15 cents.

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, 312
pages, price (includes Parts 1 and 2) $1.75.

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,
109 pages, price 55 cents.

UAG-10 “Atlas of Ionograms", edited by A. H. Shapley, ESSA Research Laboratories, May 1970, 243
pages, price $1.50.

UAG-11 "Catalogue of Data on Solar-Terrestrial Physics", June 1970. (now obsolete).

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 B. Bucknam, World Data Center A,
Upper Atmosphere Geophysics, NOAA, April 1971, 466 pages, price (includes Parts 1-3) $3.00.

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, 76 pages, price 50 cents.

UAG-14 "An Experimental, Comprehensive Flare Index and Its Derivation for 'Major' Flares, 1955-1969",
compiled by Helen W. Dodson and E. Ruth Hedeman, McMath-Hulbert Observatory, The University
of Michigan, July 1971, 25 pages, price 30 cents.

UAG-15 "Catalogue of Data on Solar-Terrestrial Physics", July 1971. (now obsolete).



To, LCM PROBABILITY CONTOUR MAP,

ERRATA TO REPORT UAG-25

YEAR 1971,

CONTOUR INTERVAL

360 ¥ T

0) a

0 60

120

LCM (DEGREES)
Fig. 24.

48

240

300

360

-10



DATE | OBSERVING | JUPITER |IN- | BURSTI- | FREQ. | JUPITER IO RANGE
PERIOO OBSER- T EN-| NESS RANGE | LONGITUDE

1974 VATIONS SITY MHZ

7 21 | 6430 1430

7 24 | 0430 1200

7 25 | 0430 0630

7 26 | 0400 1200

7 27 | 0400 1200] 0845 0990 4 |STRONG |14-23 | 275.5-284.6 | 14807-15008

7 28 | 0400 1200

7 29 | 0400 1200

7 30 | 0400 1200

7 30 | 1200 41400

7 34 | 0406 1260} 0996 0932 2 [STRONG |10-17 | 170.9-186.6 | 245.9-249.6
1048 1200) 3 |STRONG | 25-29 | 232.5-276.1 | 260.3-270.5

8 1 | 0400 4200] G728 0810} 3 |STRONG |13-27 | 262.3-287.7 | 75.6- 8106

8 2 | G4o0 1200

3 | 0330 1200] 0644 0730) 41 |SNOOTH 8-23 | 17760-20408 | 11606-12301

0858 1200; 3 |STRONG | 25-29 | 258.0- 8.4 | 135.5-161.3

8 4 | 0330 1200/0525 0550) 4 |mMoDERATE|15-28 | 280.0-295.1 | 309.0-312.5
0715 0905) 1 |MODERATE| 25-18 | 346.5- 53.0 | 324.5-34001

8 5 | 0330 1200) 0930 1200] 41 |MODERATE] 8-21 | 218.7-309.4 | 187.2-208.4

8 6 | 0330 1200] o713 1200] 1 |MoDERATE|14-20 | 286.6-100.4 1.5- 52.0

8 7 | 0330 1200] 0830 0946 1 |WEAK 8-17 | 123.8-169.8 | 226.0-236.7

8 8 | 0330 1200] 0730 1113| 3 |STRONG 8-29 | 238.2- 13.1 | 61.1- 92.6

8 9 | 0330 1200] 0450 0725] 2 |SMooTH 9-24 | 292.2- 25.9 | 24220-26329

8 10 | 0300 1200] 0555 1035) 2 |SMOOTH 8-39 |422.1-29124 | 94.7-134.3

8 12 | 0306 1200} 0909 1200) 2 |sTRONG |12-28 | 180.8-284.2 | 169.4-193.6

8 13 | 0300 1200/0755 0955) 2 |MODERATE| 8-25 | 286.8-359.3 2.5- 19.5

8 14 | 0300 1200 .

8 45 | 0300 1200/0905 1113) 3 |WEAK 10-48 | 270.5-347.9 | 59.7- 77.8

8 16 | 0300 1200

8 17 | 0230 1200] 0650 1200) 3 |MODERATE|13-3% | 130.2-317.6 | 87.8-131.6

818 | 0230 1200

819 | 0230 1200] 1048 1430) 41 |STRONG [10-16 | 215.4-240.8 | 16827-17466

8 20 | 0230 1200

8 21 | 0230 4200) 0605 oO740} 1 |STRONG |10-18 |345.8- 43.2 | 175.9-189.3

8 21 | 1200 4400

8 22 | 0230 1200] 0915 1119) 2 |MoDERATE|10-18 | 251.3-326.3 | 46.4- 63.9

8 23 | 0230 1200) 0529 0928] 2 |STRONG |10-24 | 265.3- 49.8 | 21820-25128

8 24 | 0200 1230 | 0805 1135| 3 |WEAK 13-34 |450.3-277.3 | 83.7-113.4

8 25 | 0200 4230) 0700 820) 1 |sMooTH |12-18 | 261.7-310.1 | 278.1-289.4

8 26 | 0200 1230/1010 1130) 1 |SMOOTH [11-18 | 167.3-215.6 | 148.6-159.9

8 27 | 0200 1230

8 28 | o200 1230

8 29 | 0200 1230/ 081% 0837) 1 |MODERATE]13-18 |189.2-203.1 | 23.0- 26.3
1015 1217) 1 |WeAK 25-18 | 262.4-336.1 | 40.2- 57.4

8 30 | 0200 1230] 0715 90930] 2 |WEAK 10-18 | 304.2- 25.8 | 218.3-237.4

8 31 | 0130 1230] 0747 1032) 2 |STRONG 8-28 | 11462-21460 | 66.5- 89.8

9 4 | 0430 1230 | 4033 41130) 1 |smooTH [41-15 5o3- 39.7 | 29325-30106

9 4 | 0130 4230] 0522 0730] 2 |wWeak 14-22 | 26964-34667 | 14005-1586

9 5 | 0130 1230] 0301 0330) 1 /STRONG |13-21 | 334.7-352.3 | 324.2-328.3

9 6 | 0130 1230

9 7 | 0130 1230) 4020 1035) 1 |STRONG |15-18 |181.5-190.6 | 73.5- 75.6

9 8 | 6130 1230 | 0808 0920) 2 |STRONG |10-29 |252.4-295.9 | 2538.5-268.7

9 9 | 0130 1230 | 0433 0552) 1 |STRONG |12-20 |273.0-320.8 | 741.7- 82.9
9807 0840/ 2 |MODERATE|25-16 | 42.4- 62.4 | 101.9-106.6

910 | 01430 1230

941 | 0430 1230/0733 0920) 2 |weak 12-20 | 32303-2769 | 14404-15905

912 | 0130 1230

913 | 0130 1200 | 0645 1130) 2 |sTRONG |12-27 |235.5- 47.8 | 184.8-225e1

944 | 0130 1200} 0326 0730} 1 |smooTH |13-22 |265.9- 53.4 93-3408

20



EMISSION PLOT FOR THE APPARITION OF 1974

OWA
AN A AW AAA
BEAMING
AVAVAIANN\WLVIAVAUIANERUAAY
r | YAR \
COCOA,
L \ \\ \\
Kit | wa WH
c \ \ \
LoVe Wt

\ \ LEW \T } \\
Py AAW VW ull :

(DEGREES)
Fig. 14.

120 150 180 210 240 270 300 330 360
LCM

90

30 60

0

38


OBSERVATIONS OF JUPITER'S SPORADIC RADIO EMISSION IN THE RANGE 7,.6-80 MHz
10 DECEMBER 1971 THROUGH 21 MARCH 1975

by

James W. Warwick, George A. Dulk and Anthony C, Riddle
Department of Astro-Geophysics
University of Colorado
Boulder, Colorado 80302 USA

This report extends the list of Jupiter's decametric emissions observed at Boulder through the
Jupiter apparition of 1974, The data were recorded on the University of Colorado's radio spectrograph.
Previous reports which covered the period from 1960 through December 1971 are found in Warwick and
Kreiss [1964], Warwick and Dulk [1965, 1966, 1968] and Warwick et at. [1973]. These reports cover the
apparitions of 1960-63, 1964, 1965, 1967-68 and 1969-71 respectively.

The observing equipment has been described in previous reports. The high frequency coverage has
been extended from 41 MHz to 80 MHz by the addition of another band which was in continuous service
during the period of this report and sporadic service earlier. However, despite a sensitivity
comparable to that in the 20-41 MHz band no Jupiter emission has yet been recorded in the 41-80 MHz
band, The present report uses the same data format as in the previous reports. 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.

The overall emission probability was 0.009 for 1972, 0.036 for 1973 and 0.108 for 1974; these
compare with an overall emission probability of 0.058 for the ten apparitions from 1961 through 1971.

Figure 1 is a histogram of emission probability vs. longitude of the central meridian (LCM)
(System III (1957.0)) for the 1972 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.
Figure 3 shows the joint probability of emission distribution as a function of LCM and $j. Local peaks
(depressions) are indicated by the letter H (L) together with the probability value at that point.

Figure 4 is a plot of the (LCM, %z9) relation for the emissions recorded by us in 1972, Each
sloped line represents one Jupiter event and is the path of the coordinate pair (LCM, 4z9) from
beginning to end of the emission. The line slope is equal to Pj/Py where Jupiter's rotational
period Py = .413 days and Io's orbital period Py, = 1.77 days. rhe uneven distribution of lines is
due partly to the influence of Jupiter and Io and partly to the uneven distribution of the
observations,

Figure 5 shows the (LCM, 1.) 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 2191 hours (corresponding to an average of 221 rotations of
Jupiter or 52 of Io). The uneven distribution is due partly to the near commensurabilities of the
rotational period of Jupiter and the orbital period of Io and partly to the 24 hour observing
periodicity of a single observer on the Earth.

Figures 6 through 10 and 11 through 15 are similar plots for the 1973 and 1974 apparitions,
respectively. Jupiter was observed for 2254 hours during the 1973 apparition and for 2641 hours
during the 1974 apparition,

During the reduction of these data it was noted that there was an error in the reduction of the
data for apparitions 1969-71 (Warwick et al,, 1973]. The error did not appear in the listing of
observations but did modify the probability of emission plots. Figures 16 through 18, 19 through
21 and 22 through 24 are the corrected plots for the apparitions of 1969, 70 and 71 respectively and
correspond to Figures 1 through 3, 6 through 8 and 11 through 13 in Report UAG-25. Figure 16 in
Report UAG-25 also reflects the error and is superseded by Figure 25 in this report.

Figure 25 shows the combined histograms of emission probability vs. longitude of central meridian
(System III (1957.0)) for all apparitions 1960 through 1974, a total of 14 curves. The scale of each
histogram is normalized to give each curve the same height. The value of emission probability at the
peak is given on the right hand axis. Figure 25 shows the basic information from which the need for
revision of Pyyy (1957.0) = 9 hr 55 min 29.37 sec can be derived. The main peak of emission, after
LCM (System it (1957.0)) = 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 to be shifting less steadily. A modification of Py; to 9 hr 55 min 29.71
sec would make the main peak fit on a vertical line on Figure 25, This is just one of several lines
of evidence which suggest that the current value of Pz] is too short by ~ 0.34 + 0.05 sec, For

i
}
}



AlAL LNA Tn

+25

«20

19 °
a a

NOLSSIW3 40 ALITISVaOudd

05
0.00

80 120 160 200 240 280 320 360

40

973
973

YEAR 1

Io (DEGREES)

Fig.

31


OATE OBSERVING JUPITER I[N- |BURSTI- |FREQ. | JUPITER I0 RANGE
PERIOO OBSER- JTEN=|NESS RANGE | LONGITUDE
1974 VATIONS SITY MHZ
2.6 1430 2500
27 i4c0 2500
2 8 1500 2500 | 2120 2242) 2 | SMOOTH 15-37 | 144.9-194.5 88e3- 9909
210 2100 2500
2414 1400 2430
2 12 1400 2430
2 15 2115 2430
2 16 1400 2430
247 1330 2430
218 1330 2430
219 1330 2430
2 20 41330 2430
2 24 1330 2430
2 22 1330 2400
2 23 1330 2400
2 24 1330 2400
225 1330 2400
2 26 1300 2400] 1557 1633) 1 |SMOOTH 25-37 | 1352-15760 | 10103-10604
1836 1927| 1 |SMOOTH 25-25 | 23104-26202 | 12368-13100
2 27 1300 2400
2 28 1300 2400
34 1300 2400
3 2 1300 2400
3 3 1300 2400
3.4 1300 2400
3.5 1300 2330] 1620 1846 2 |SMOOTH 17-38 | 12124-2096 8704-10820
3 6 4300 2330
3.7 4230 2330
3.8 1230 «62330
3.9 1230 2330
3 10 1230 1800
3 i1 1726 «62330
312 1230 2330/1818 1900 2 |SMOOTH 17-34 | 16561-19025 BG08- F207
313 1230 2330
3 14 1230 2330
3.15 1230 2330
3 16 1200 2300
3.17 1200 1600
3 16 1260 2300
3.19 1200 1300
3.19 1700 2000
3 20 1200 1300
3 21 1230 01330
3 22 1230 1330
3 23 1230 1330
3 24 1230 1330
3 25 1230 «©1330
3 26 11430 1300
3 27 1130 1300
3 28 1130 1300
329 1130 61300
3 30 1130061230
3 30 4230 1400) 1237 1314 1 | SMOOTH 20-31 | 145.2-165.2 9703-10109
3 31 1430 1230
at 4130 1230 .
4 2 1130 61230
4 3 1100 1230
7



DATE OBSERVING JUPITER IN- |BURSTI- |FREQ. | JUPITER TO RANGE
PERIOO OBSER- jJTEN=|NESS RANGE | LONGITUDE

1974 VATIONS SITY MHZ

12 27 G000 0530

12 28 0000 0530

12 29 0o0co 60530

12 29 1730 ©1900

12 30 0000 0500) 0212 0234 1 |STRONG 16-25 | 12126-13469 | 16029-16400

42 31 ooc0 60500

1975

aoa oo00 60500

1 2 0000 0500 | 0400 0435) 2 |WEAK< 12-21 | 27728-29869 6502- 71.2

1 3 0000 9560] 0006 0020| 4 |MODERATE/15-23 | 286.6-295.1 | 236.5-238.4

1 4 0000 0500) 04122 251) 2 |sTRONG 411-36 | 122.9-176.7 9005-10304

15 0000 0500

i 5 1600 1900

1 6 Go00 60500

1 7 0000 0500

1 8 o000 o500

19 0000 0430

41 10 0000 0430] 0000 0432) 2 |sTRONG 13-29 | 25561-31047 | 213.7-231.7

a 44 0000 0430) 0300 0400] 2 |MODERATE| 9-33 | 154.2-190.5 B7e4- 9509

1 12 0000 0430 | 0113 0245} 2 |STRONG 12-24 | 239.8-295.4 | 27506-28826

143 0000 0430

114 0000 0430] 0247 0316] 1 |STRONG 14-20 | 23703-25468 | 33524-339.5

115 0000 0430

1 16 0000 0430) 0302 0340) 1 | WEAK 10-24 | 186.8-209.8 24et- 29.5

1 17 0000 0430

1 18 0000 0430

149 0000 0400/0220 0315) 2 |STRONG 17-30 | 25223-28622 | 268.1-276.0

1 20 cooo 0460

1 20 1700 2000

121 0000 0400

1 22 go00 0400

1 23 0030 a4900

1 24 0030 0400 | 0118 03214) 2 |MODERATE]12-29 | 246.3-320.6 | 195.7-213.0

125 0030 0400

1 26 0030 0400

1 27 0030 0400

i 27 1800 2100/1924 1936) 2 |SMOOTH 20-29 | 273.7-286.9 | 23869-24006

1 28 0030 0400) 0200 o215/ 4 |SMOOTH 8-12 | 15227-16168 | 294.8-296.9

1 28 2000 2300} 2400 2153) 2 |WeAK 20-36 | 121.9-154.0 9507-10322

1 29 0030 0330

1 30 0030 0330

131 0030 0330

24 0030 0330] 9216 0237) 41 |STRONG 11-15 40.0- 56.3 29.2- 33.0

2.2 0030 9330

2 3 0030 0330

204 0030 0330

24 2100 2400) 2210 2359| 2 |SMOOTH 16-26 | 13622-20261 8804-10328

2.5 0030 9330

26 0030 0330

2.6 1530 1600

27 0030 0330

2 8 0030 0330

29 0030 90300

210 0030 o300

2 41 0030 0300

244 2200 2430 | 2233 2430) 1 |WEAK 10-34 |122.0-192.5 74e4~ 9009

23

|
}
}



DATE OBSERVING JUPITER JIN- |BURSTI- |FREQ. | JUPITER TO RANGE
PERIOD OBSER- jTEN-)NESS RANGE | LONGITUDE

1974 VATIONS ISITY MHZ

5 30 G800 1430) 1015 41430} 2 |MODERATE|15-30 | 235.9-281.2 | 23908-25004

5 30 4130 1300

5 31 0800 1130

6 1 08go0 61130

6 2 0730 1130

6 3 0730 1130

6 4 0730 1130

6 5 0730 1430

6 6 0730 1130

6 6 4430 41400

6 7 0730 1130

6 7 1300 1600

6 8 0900 1130

6 10 0700 14136

6 11 0700 1130/1053 4113 1 |STRONG 12-20 | 26542-27743 | 16629-16808

6 12 0700 1130

6 14 0700 4130] 0855 14190) 2 /STRONG 15-23 | 285.4- 1.0 3907- 57.3

6 14 4400 1700) 1447 1650) 2 |STRONG 17-37 | 138.2-212.6 8904-10608

6 15 0700 1130

6 16 0700 1130) 1030 1430) 1 |WEAK< 14-18 | 284.1-320.3 9909-10804

6 17 o700 1430

6 18 0630 1130

6 19 0630 1130] 0752 1025) 1 |WEAK 15-24 | 28001~ 12.6 | 327.9-349.5

6 20 0630 1130

6 24 0730 1230

6 21 1400 1700

6 22 0630 1130

6 23 0630 41130] 1116 *14130) 4 |MODERATE|14-20 | 285.8-294.2 B0e6- 9205

6 24 0636 1130] 0830 41018 1 |WEAK 15-20 | 336.0- 41.3 | 270.6-285.8

6 25 0630 1130

6 26 0600 1130) 0745 14110) 2 | STRONG 22-20 | 249.9- 13.8 | 31401-34001

6 27 0600 1130

6 29 06500 44130

6 30 0600 1130) 1633 41130) 2 |STRONG 12-26 | 233.9-268.3 58e8- 7609

7 14 0600 1130] 0647 0945 2 |STRONG 14-28 | 24768-35545 | 240.3-265.5

7 2 0600 1130

7 3 0600 1130

7 4& 0530 1130

7 5 0530 1130] 0810 08417) 1 |MODERATE| 14-23 | 180.4-184.7 | 346.0-347.0
1023 1130 2 | WEAK 25-27 | 260.8-301.3 4e8= 14.3

7 6 0530 1000

7 8 0530 1130} 0740 414110) 2 |MODERATE/ 14-27 | 236.0- 21.0 | 228.0-261.9

79 0536 1130] 1010 1130} 2 | STRONG 13-37 | 13504-183.7 9720-10823

7 9 4130 1200) 1130 41200) 2 | STRONG 13-37 | 183.7-201.9 | 19823-11205

7 10 0500 1130] 0953 1054) 2 | STRONG 15-27 | 275.7-312.6 | 298.1-30607

7 41 0500 1130} 0613 06439 4 | STRONG 15-24 | 293.4-311.5 | 4 5-114.8

7 12 0500 1130] 1018 1047) 1 |MCDERATE| 8-12 | 23221-249.6 | 34827-35208

7 13 0500 41130] 0535 6930 2 |WEAK 11-20 | 241.6-353.7 | 1522-18504

7 13 1600 1630

7 14 0500 1130) 0830 6955) 4 | WEAK 81-49 | 108.0-159.4 2405- 3265

7 15 0500 1130) 0825 1130) 3 |STRONG 10-20 | 25567- 7.5 | 223.3-249.5

7 16 0500 41130) 1010 1130) 3 | WEAK 10-41 | 109.8-158.1 8167- 93.0

7 16 1130 1300] 1130 1300) 3 | WEAK 10-464 | 158.1-212.5 93-0-10507

7 17 0500 41130) 0950 1130 1 |STRONG 410-23 | 2483-30807 | 28204-29605

7 18 0500 1130

719 0430 1130

7 20 0430 41130] 0732 0823 2 | WEAK 8-26 | 25629-28747 | 15325-16007

19

|
|
|
|



To, LCM PROBABILITY CONTOUR MAP, YEAR 1973, CONTOUR INTERVAL .10

360F a |
1, |
TDF
L sy
300 ' |
240: a Mind |
r H
r i,
180
09 H i
Io 7 |
120 |
60. j |
8
0 60 120 180 360
Lem (DEGREES)

Fig. 8. |
|

i

|

|

‘i

|

|

|

32 |


DATE OBSERVING JUPITER [LN- |BURSTI= |FREQ. | JUPITER IO RANGE
PERIOD OBSER- JT EN=| NESS RANGE | LONGITUDE

1973 VATIONS SITY MHZ

8 12 o200 1100

8 13 o200 1100

8 14 0200 1100

8 15 o200 1100

6 16 6260 1100

8 17 o200 1100

68 18 0200 1030

819 0200 1030

8 20 0200 1030] 0302 0340} 1 |SMOOTH 19-27 | 255.5-278.5 | 233.3-238.7

8 21 0200 1030) 0510 6660) 2 |MODERATE| 20-35 | 123.5-153.7 9500-10220

8 22 0200 1030

8 23 0200 1030

8 24 0200 1030

8 25 0200 1030

8 26 0200 1000

8 27 0200 1000 | 0349 0403} 2 |MODERATE]23-33 | 258.2-266.7 | 22501-22701

8 28 0200 1000] 0545 G820/ 2 |MODERATE|22-36 |119.0-212.7 8521-10720

8 29 0200 1060

8 30 0130 1000

8 31 0130 1000

94 0130 0930

9 2 0130 0930

9 3 0130 0930 | 0453 0503] 4 |SMOOTH 22-26 | 271.0-277 61 | 21901-22065

9 4 G130 0930] 0731 6849} 2 |SMOOTH 22-34 | 157.1-204.3 85e0- 9600

9 °5 0130 0930

9 6 0130 0930

9 7 0130 0930

9 8 0130 0900

99 0130 60900

9 10 0130 60900

gait 0130 0900

9 42 0130 0900

9 13 0130 0900

9 14 0130 60900

915 G130 9830

3 16 0130 60830

917 0130 0830

9 18 0100 0830] 02214 0304 2 |SmMOOTH 20-30 | 27764-30324 10.7- 16.8

919 0100 0830

9 20 0100 0830

9 21 0100 0830

9 22 0100 0830; 0143 O204 2 |SMOOTH 21-37 | 136.5-149.2 9904-10263

9 23 0106 0800

9 24 0100 0800

9 25 0100 0800

9 26 0100 0800

9 27 0100 0800

9 28 0100 0800 / 0224 0305) 1 |MODERATE/16-25 | 344.2- 8.9 | 24601-25129

9 29 0100 0800) 0139 0415) 2 |MODERATE/15-30 | 10764-20148 8342-10523

9 30 0100 0730

10 2 0100 0730) 0327 0497] 4 | WEAK 16-30 | 26461-288.3 | 34828-35405

10 3 G100 90730

ao 04 0100 0730

10 5 0100 0730

10 6 0400 0730 | 0400 9435; 1 |SMooTH 20-30 |165.9-187.0 B7e4= 9204

10 68 o030 60700

io 9 0030 0700

4

|



OATE OBSERVING JUPITER IN- | BURSTI- | FREQ. | JUPITER TO RANGE
PERIOD OBSER- T EN-| NESS RANGE | LONGITUDE

1972 VATIONS SITY MHZ

5 26 0430 41130

5 27 0430 41130

5 28 0430 1130

5 29 0430 1130

5 30 0400 1130

5 31 0409 o700

6 4 0400 1130

6 2 G40G 41130) 0902 0905) 1 |STRONG 22-27 | 2593-26101 | 323.4-323.8

6 3 0409 14130

6 4 O400 1130

6 5 G330 14130

6 6 0330 1430

6 7 O330 1130

6 6 0330 1130

6 9 6330 1130

6 10 0339 41130

6 it 0330 1130

6 12 O3co 1130

6 13 C300 0400

6 14 0300 4130

6 15 0300 41130] 0620 6502 4 |MODERATE] 20-25 | 247.7-27301 5005= 5604

6 16 O300 1130) 1021 1045) 2 [MODERATE] 20-30 | 256.6-27101 30501-308.5

6 17 0309 1130] 0327 0355, 1 |MONERATE| 25-36 | 156.9-173.9 9002- 94.2
0623 0642 2 | WEAK 14-29 | 263.3-274.8 | 115.1-117.8

6 18 0300 1130

6 19 0230 14130) 0656 0737) 1 | WEAK 25-31 | 22467-24945 | 16700-17268

6 20 0230 1130

6 24 0230 14130] 0837 0950] 1 |MODERATE| 20-35 | 22721-27123 22805-23808

6 22 0250 1130

6 23 0230 41130

6 24 0230 1130

6 25 0230 1130

6 26 0230 1130

6 27 0230 1130

6 28 0230 1130] 0916 1021] 4 |mMoDERATE|17-31 | 225.4-264.7 21905-22826

6 29 0230 1130

6 30 0230 61130

71 0230 1130] 0803 0897/ 1 |MODERATE|22-26 | 273.3-275.7 10920-10005

7 2 0230 61130

7 3 0230 1100

7 4 0230 1100

7 5 230 «1160

7 6 0230 1100

7 7 0230 1100

7 8 0230 1000] 060% G634) 1 | MODERATE] 20-24 | 17620-19464 6Be4~ 72.7

7 9 0230 1100

7 40 0230 1030

7 44 G230 1030

7 12 0230 1030

7 13 0230 1030

7 14 0230 1030

7 15 0230 1030

7 16 0230 1030) 0421 04546, 1 |MODERATE|19-25 |238.8-258.7 24206-24703

7 17 0230 1000

7 18 0230 1000

719 C230 «61000

7 20 0230 1000

|
|
|
}
|
|


OBSERVATION PLOT FOR THE APPARITION OF 1972

AAA

i VANS |
AWN

ANVANUANAWANUAVIY
\ VN WARNANVIOGIAN
\\ i AN AAAHAWAIAN
YA
A AY
i AAA
a

N AN
nN Was CAN |

=

AAs

AZ.

120 150 180 210 240 270 300 330 360

te

0 90

6

30

(DEGREES)

LCM

29


360

320

280

x
= 8
st rt
a
an -
eee <
us
>
[=] N
i=)
Ss Hf
no
o 2
Wor
oOo tw
a 2
a
fo}
e

AAU

I
120

0.00 Bill
0 40 80

+05
+04

a) “I
fo) i) So

NOISSIWS 40 ALI TI avaddd


OATE OBSERVING JUPITER IIN- |BURSTI- | FREQ. | JUPITER TO RANGE
PERIOD OBSER= TEN=| NESS RANGE | LONGITUDE
1971 VATIONS SITY MHZ
12 10 1400 2330
12 11° 1460 2330
12 12 1400 2330
12 13 1400 2330
12 14 14400 2330
12 15 1400 2330
12 16 1400 2330
12 17 1620 2330
12 20 1730 «62300
12 21 1330 62306
12 22 1330 2300
12 23 13940 2360
12 24 1330 2300
12 25 1330 2300
12 26 1330 62300
12 27 1300 1514
12 28 1727) 2300
12 29 1300 2300
12 30 4300 2230
12 31 i300 2230
1972
1 14 1300 2230
1 2 1306 2230
1 3 1300 2230
1 4 1300 2230
105 1300 2230
1 6 1230 2230
1 7 1230 62230
1 6 1230 2200
19 12300 062200
1 16 1230) 61430
1 4a 1230 1430
* 444 1430 61500
4112 1230 1430
113 1230 1430
114 1230 61430
115 1230 1430
1 16 1200 1430
1 17 1200 1400
1 18 1200 1400
119 1200 1400
1 20 1200 1400
4a 24 1200 1400
1 22 1200 1400
1 23 1200 1400
1 24 1200 1400
125 1200 1400
1 26 1200 61400
* 1 26 1400 1600
1 27 1130 1400
1 28 i130 1400
129 4130 «1460
1 30 1130061400
41 31 1130 1400
24 11300 1400
2 2 1130 «61400

* DENOTES SPECIAL OBSERVING PERIOD WHEN IO-RELATED EMISSIONS WERE POSSIBLEe

Note:

All times are given in UT.



this reason the University of Colorado, in conjunction with several other groups, intends to publish
future catalogues using a new longitude measure, System III (1965.0), which will have Prry.= 9 hr
55 min 29.71 sec and the LCM at epoch (1965.0) the same as that of System III (1957.0) at 1965.0,
To facilitate comparison of past and future data the complete set of Colorado observations from 1960
through 1974, in terms of System III (1965.0) coordinates, is being prepared concurrently with this
report and will be published as a University of Colorado Radio Astronomy Observatory Report.

REFERENCES,

WARWICK, J. W. and 1964 Observations of Jupiter's Sporadic Radio Emission in

Ws T. KREISS the Range 7,6-41 Mc/s for the Years 1960-1963, Gy
Solar Activity Report Series, Wunber 28, November 2,
1964,

WARWICK, J, W. and 1965 Observations of Jupiter's Sporadic Radio Emission in

G. A. DULK the Range 7.6-41 Mc/s January 1964 through May 1965,
IGy Solay Activity Report Series, Number 32, August 16,
1965,

WARWICK, J. W. and 1966 Observations of Jupiter's Sporadic Radio Emission in

G. A. DULK the Range 7.6-41 MHz 1 June 1965 through 5 July 1966,
IGY Solar Activity Report Series, Number 34, November 1,
1966.

WARWICK, J. W. and 1968 Observations of Jupiter's Sporadic Radio Emission in

G. A. DULK the Range 7.6-41 MHz 6 July 1966 through 8 September 1968,

World Data Center A for Solar-Terrestrial Physics,
Report UAG-3, November 1968,

WARWICK, J. Wey 1973 Observations of Jupiter's Sporadic Radio Emission in
G. A. DULK, and the Range 7.6-41 MHz 9 September 1968 through
D. G. SWANN 9 December 1971, World Data Center A for Solar-

Terrestrial Physics, Report UAG-25, February 1973.

Note: The Icy solar Activity Report Series are available through the World Data Center A for Solar-
Terrestrial Physics, Boulder, Colorado 80302 U.S.A.



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

1973 VATIONS SITY MHZ

10 10 0030 3760

do 44 0030 0700

10 12 0030 0700) 9052 9213 1 |SMOOTH 20-26 | 23408-28328 | 20165-21269

10 16 0030 0630) 0607 0620) 1 |STRONG 20-37 | 307 60-314.8 | 33907-34105

10 17 0030 9630

10 18 GO30 0630

10 19 0030 0630

10 20 0030 0630

10 24 0030 0630) 0316 0430) 2 |SMOOTH 17-30 | 23220-28063 | 25128-26361

410 23 6030 0630

*10 23 2100 2400

40 24 0000 0630

10 25 0030 0530

10 26 0030 0600

10 27 co0o 6G6co

10 28 0000 60600

10 29 0000 0600/ 0010 0115) 4 |SMOOTH 18-27 | 246.2-285.5 S3e5- 6207

10 30 oo00 0600

*10 30 2200 2460

10 31 gooo 9600

422 0000 0600

141 2 000d 0530

11 3 oo00 9200

11 6 0000 60530

#11 6 2200 2344

11 7 0000 0530

41069 oo0o 0530

ii 10 g000 0530

141 41 0000 0500

41 12 o000 0500 .

141 13 g000 0500

14°17 ooce 0500

11 18 0000 0310

41 19 ooao 0500

11 20 0000 69500

11 24 0000 0430

41 22 0000 0430

141 23 0000 0430

11 24 0000 0430

‘11°25 0000 0430

11 26 o000 0430

11 27 0000 0430

11 28 0000 0430

11 29 G000 0430

i1 30 0000 0400) 0200 6317 1 | MODERATE) 12-17 8364-13020 9600-10609

12 4 |-0030 0400

12 2 |-0030 0400

12 3 |-0030 9460

12 4 |-0030 o400

12 5 |-0030 0400

12 6 |-0030 0400

12. 7 |-0030 0400

12 8 |-0030 0406

12 9 |-0030 0400

12 10 |-0030 0330

12 11 |-6030 0330

12 12 |-0030 0330

15

|
}
i
I
|

|
|
|
}

|
|
|
|
I



DATE OBSERVING JUPITER IN- | BURSTI- | FREQ. | JUPITER I0 RANGE
PERIOD OBSER- TEN=| NESS RANGE | LONGITUDE
1972 VATIONS SITY MHZ

3 28 0630 1300
3 30 0800 1230
3 34 c800 1230

1 0800 1230
2 GecG 61260
3 0600 1230
4 0800 1230
5 c800 1230
6 0800 1230) 0947 10626 1 | WEAK 14-13 | 34063- 3.8 | 24801-25326 i
7 0800 1230 i
8 0730 61230 '
9 0730 1230 ;

10 0730 61230
11 0730 1230
di 1500 1700
12 0730 61230
13 6730 61230
414 0910 1230) 1112 1207) 2 |SMOOTH 19-36 | 156.3-189.5 8709- 9507
0700 1230
16 G700 1230
17 0760 61200
18 0700 1200
19 o70G 1260
20 a700 1200
24 a7o00 61200
ed 1200 1300
22 0709 1200
23 0630 1200
24 0630 1200
25 0630 1269
27 0630 1200
238 0630 1200
2g 0630 1200/1100 4134 1 |SMOOTH 16-28 | 248.1-268.7 | 25827-26325
30 0630 1200

Per rr eo ger errr rrr es
i"
a

1 0600 1200

2 0600 1260) 0845 0937) 2 |MODERATE|13+26 | 25824-28968 | 1302-13705

3 0600 1200 f
& 0600 1260

5 0600 1200 i
6 0600 1200 '
8 0530 1100

9 0530 1200] 6840 69955) 41 |SMOOTH 14-22 | 22929-27522 | 114.2-124.8

10 0530 1200 }
a4 0530 1130/1035 1050) 1 |WEAK 20-26 | 24067-24928 | 17726-17927 t
12 | 0530 1130 |
0530 «1130
13 1130 1400] 4135 1305) 2 /MODERATE|15-29 | 218.3-272.7 | 23322-24529
14 | 0530 11430
15 | 0500 1430
16 0500 41130) 0740 0808) 1 |SMOOTH 23-29 | 16822-18561 D0.7- 94.7
17 | 0500 1430
18 | 0500 1130
19 0500 4136
20 C500 1130
a4 0500 1130
22 | 0500 1130
25 | 0430 1430

RRURO KURU RU RU gu RC RC RU RU RU RC RU RU RO nU RC RU nC nC RG)
a"
w



DATE OBSERVING JUPITER [LN- |BURSTI- |FREQ. | JUPITER 10 RANGE
PERIOD OBSER- jT EN-|NESS RANGE | LONGITUDE

1974 VATIONS SITY MHZ
1029 1112) 1 |STRONG 25-20 | 161.7-187.7 60e1- 66.2

9 45 0130 1200) 0600 0630] 1 |SMOOTH 13-18 | £49.6-16768 | 22567-22929
0607 1000) 2 |STRONG 25-23 | 22604-29467 | 24366-25906

9 16 0130 1260] 0515 0625) 4 |SMOOTH 10-20 | 27321-31564 6209- 7208
0920 1052) 2 |STRONG 25-18 6162-116 .9 9706-11006

9 18 0100 1200] 0230 6355 3 |SHOOTH 13-38 | 114.7-166.1 8603- 9808
0530 0710) 4 |SMOOTH 25-20 | 223.5-284.0 | 11263-12604

919 0100 1130

9 20 0100 1130

9 24 0100 1130

9 22 0100 14130) 0855 1034) 2 /MODERATE|15-35 | 23020-28801 | 23507-249.3

9 23 0100 «61130

9 26 0100 4130 | 0159 0520) 2 |STRONG 13-22 | 27907- 41.3 | 22401~252.5

9 25 0100 1130] 0354 0626) 3 |MODERATE|/13-39 |140.0-231.9 BH oO-10505

9 26 gico 1200

3 27 0100 1100

9 28 0100 1100) 0430 0724) 1 |WEAK 11-22 | 25325-35867 | 33908- 4e4

9 29 0100 1100] 0125 0214) 1 |SMOOTH 14-20 | 29204-32062 | 1573-16327
0950 1009) 1 |STRONG 14-27 | 23767-24922 | 22826-23163

9 30 0100 41100) 0549 o700) 2 |WEAK 12-23 | 242.6-285.5 38.2- 48.2

10 64 0100 1100] 0205 0646) 2 |WEAK 10-26 | 25768- 6766 | 21501-24929

10 2 0100 1100] 0457 0800) 2 | WEAK 13-31 | 152.3-263.0 7825-10329

10663 0100 0930 | 0356 0610! 1 |SMOOTH 15-23 | 26601-34761 | 27249-29129

10 4 0100 1030

10 5 0100 1030

10 6 0030 1030 | 030% G422) 1 |STRONG 13-28 | 32664- 13.6 | 15603-16723
0707 0732) 1 |STRONG 25°20 |113.3-128.5 | 19007-19462

10 7 0030 1030 | 0641 6845) 2 |STRONG 11-29 | 248.2-323.2 3005- 48e1

10 8 0030 1030] 0233 0600! 1 |MODERATE|14-28 | 248.9- 14.0 | 19961-228.4

1669 0030 1030] 0430 0645) 1 |WEAK 11-26 | 110.1-191.7 59e2- 76.3

10 10 0030 1000] 0500 0600) 1 |SMOOTH 14-20 | 278.9-315.1 | 26720-27525

10 14 0030 1000 | 0440 0505) 41 |SMOOTH 13-17 S7e4~ 7265 | 10727-11103

10 12 0030 1000] 0600 0610) 1 |SMOOTH 12-17 | 25603-26204 | 32207-32401

10 13 0030 1000

10 14 0030 0800/0400 0745) 41 |WEAK 14-28 | 12409-26029 | 35208- 24.6

10415 0030 1000

10 16 0030 0430

10 47 0030 0930) 0313 6550) 2 |SMDITH 14-34 | 16821-28369 | 235.7-258.9

10 18 0030 0930] 0530 0630) 2 |WEAK 12-17 61.5- 97.8 9926-10861

10 19 0030 0930) 0700 0730) 1 |MODERATE|11-20 | 26604-28445 | 31509-32001

10°19 2200 2430) 2300 2400 @ |SMOOTH 20-38 |126.8-163.1 9166-10001

10 20 0030 0930/0306 0400) 1 |SMOOTH 13-20 | 275.5-308.2 | 12604-13420

10 21 0035 0930

10 22 0030 0930 | 0343 6630) 1 |WEAK 10-30 | 238.9-339.9 | 1787-20203

10 23 0030 6930/0035 6125) 1 |SMOOTH 14-26 | 27528-30620 207

10 24 0030 0900] 0330 0640} 2 |SMOOTH 10-30 |172.2-287.0 20 8-25006

10 25 0030 0900 | 0700 0825) 2 |MODERATE|11-20 89.6-141.0 9720-10920

10 26 0030 0900

10 26 2300 2400

10 27 0000 0900 | 3915 0137) 2 |SMOOTH 17-36 |145.8-195.3 8608- 984
0335 0430) 1 |WEAK 25-30 | 26667-29969 | 11501-12208

10 28 0000 0900

10 29 0000 0900 | 0430 0800) 2 |MODERATE|12-28 | 240.9- 7.9 | 169.8-199.5

10 30 og00 0900

10 31 0000 0830 | 0659 6715) 1 |MODERATE|20-34 | 272.0-282.3 | 23709-24003

114 0000 0830

141i 2 0000 06830] 0100 0345) 2 |SMOOTH 141-20 | 35600- 9547 | 23401-25704

21



WORLD DATA CENTER A

for
Solar-Terrestrial Physics

REPORT UAG - 42

OBSERVATIONS OF JUPITER’S SPORADIC
RADIO EMISSION IN THE RANGE 7.6-80 MHz |
10 DECEMBER 1971 THROUGH

21 MARCH 1975

TIS

ERRATA TO REPORT UAG—25 INCLUDED



ERRATA 10 REPORT UAG-25

360

320

280

240

fo)

80

40

f=)

i=)

or

food

©

a

a
12 + isd [Si al i=)
f—) oO i=) o f=) f=)
°o

NOISSIWS 40 ALITIava0ud

YEAR 1970

lo (DEGREES)

Fig. 20.

44


DATE | OBSERVING | JUPITER |EN- |BuURSTI- | FREQ. | yUPITER TO RANGE i
PERIOD OBSER- IT EN-| NESS RANGE | LONGITUDE |
1972 VATIONS SITY MHZ |
9 11 | 0130 0630
912 | 0130 0630
913 | 0130 0630
914 | 0130 0600
915 | 0130 0600
916 | 0130 0600
917 | 0400 0600
918 | 0100 0600
919 | 0100 0600
9 20 | 0100 0600
9 21 | o100 o600
9 22 | o100 0530 |
923 | 0100 0530 |
9 24 | 0100 0530 |
* 9 24 | 2100 2500 }
925 | 0100 0530 i
* 9 25 | 2300 2500 '
9 26 | 0100 0530
9 27 | 0100 0530
9 28 | 0100 0530
929 | 0490 9530 i
9 30 | 0100 o500
10 4 | 0100 0500 |
*10 1 | 2200 2500 i
10 2 | 100 o500
10 3 | 0100 0500 2 24-35 | 165.9-187.6 | 9827-10328
10 4 | 6100 o500
10 5 | 9100 9500 |
10 6 | 0030 0500 |
10 7 | 0030 0500 |
10 8 | 0030 500 |
10 9 | 0030 206 i
10 49 | 0030 0430 1 26°30 | 15664-170.3 | 86.4- 89.6 |
10 12 | 0030 0430
10 143 | 0030 0430
10 44 | 0030 0430
10 15 | 0030 0430
16 16 | 0039 0430 }
10 17 | 0030 0430 }
10 18 | 0030 o400 |
10 19 | 0030 0400
16 20 | 6030 0400
10 21 | 0030 0400
10 22 | 0030 0400
10 23 | 0030 0400
10 24 | 0030 o400
10 25 | 0030 o400
10 26 | 0030 0400
*10 26 | 1800 2000
10 27 | 0000 0330
10 28 | 0000 0330
10 29 | 0060 0330
16 30 | 0000 0330
10 34 | 0000 0330
14 4] 0000 0330
14 2] 0000 0330
414 3] C100 0330

|
|


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

1972 VATIONS SITY MHZ

7 at 0230 1000) 0332 635% 1 | SMOOTH 24-28 | 24263-25704 | 17307-17702

7 22 0230 1000

7 23 0230 1000) 0530 054 1 | WEAK 21-39 | 25468-26663 | 23705-24062

7 24 0230 0930; 0805 0824 1 | SMOOTH 25-34 | 139.1-150.6) 103.1-105.8

7 25 0230 0930

7 25 2300 2630

7 26 0230 0930

7 27 0230 0930

7 28 0230 0930

7 29 6230 0930

7 30 0230 0900} 0547 0634 1 | MODERATE) 21-32 | 239.2-267.6| 225.0-231.6

731 0230 0900

68 4 0230 60900

6 2/-0030 90230

8 2 0230 9900

6 3 0230 0900

8 & 0230 0900) 0504 0515 1 | WEAK 25-29 | 2460-25342 | 15506-15803
0545 0614 4 | SMOOTH 14-29 | 27008-28945 | 15264-16668

8 5 0230 0900

8 6 0230 0900

8 7 0230 0830

8 8 0206 0830

8 9 0200 0830

8 10 0220 0830

8 it 0200 0830 .

8 12 0200 0830

813 0200 0830

8 14 6200 60800

8 15 o200 0800

8 16 0200 0800

8 17 0200 0800

8 18 0200 06950

819 o200 0800

8 20 o200 0800

8 24 0200 0730

8 22 0200 0730

8 23 g200 90730

8 24 0200 60730

8 25 6200 0730

8 26 0200 0730

8 27 0200 0730

8 28 o200 0730

8 29 0200 O700

8 30 0130 «60700

8 31 0100 60130

8 31 0130 0700

9 4 0130 0700/ 0431 6545 1 | WEAK 20-36 | 120.1-164.9 99.9-100.5

9 2 0130 60760

9 2 2130 2300

9 3 0130 60700

9.4 0130 «600700

9°05 0130 0630

9 6 0130 0630

9 7 G130 0630

9 8 0130 0630

9°9 0130 0630

9 10 0130 69630

|



ERRATA TO REPORT UAG-25

+05

04

oo
fo}

NOISSIWS 40 ALITIaVdOud

0.00

foo)
o
oO

80 120 160 200 240 280 320
YEAR 1969

40

LCM (DEGREES)

Fig. 16.

40


EMISSION PLOT FOR THE APPARITION OF 1972

360F aan ae i 7 an SALE Lae DLA
330
_ ]
300
270
be —| 4
FE in
240 a
oe— ]
210 -
7
180 =
Io TT pe q
150
47 ]
120 jE
4 ; 7
90 ne
de J
60 —
30 :
0 ‘ ren crearee Greene creer mare
0 30 60 90 120 150 180: 210 240 270 300 330 360

LCM (DEGREES)
Fia. 4.

28



ERRATA TO REPORT UAG-25

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

360 1 ; 7 7 , .
370 - 4
Py ee ae oe 4

Penance ee de ee pe nfm pene eee aman one en 4
180 L ee + + —+ + ~

"To :

po sb oe 4
120 -- — a 4
6oF 4 ' “fo + f + 4

t |

r ~ chee

: ! ' i H :
Oboe ti i
0 60 120 180 240 300 360
LCM (DEGREES)
Fig. 21.

45



To, LCM PROBABILITY CONTOUR MAP, YEAR 1972, CONTOUR INTERVAL .10

360 f rr
4 ;
300 EL
ono a
q
180 e :
"To KA j
oi" 5
120 {i :
60 <
82]
0 60 120 180 240 300 360

LCM (DEGREES )

Fig. 3.

27



OATE OBSERVING JUPITER IN- | BURSTI- | FREQ. | JUPITER TO RANGE
PERIOO OBSER- TEN=| NESS RANGE | LONGITUDE
1972 VATIONS SITY MHZ
22 1400 1700
2 3 41300 61400
24 41300 «61400
2.5 4100 1400
2.6 1100 1400
2 7 4i00 1400
2 8 1100 1406
2.9 1100 1460
210 1100 1400
2 10 1843 2032
2 it 1100 1400
212 1100 1400
213 1100 61400
214 1100 1400
215 1030 1400
2 16 1030 61400
2 17 1030 1400
2 18 1030 1400
219 1030 1330
2 20 1030 61330
2 21 1030 1330
2 22 1030 1330
2 23 1030 ©1330
2 24 1000 1330
2 25 1009 1330
2 26 1000 1330
2 27 1000 1330
2 28 1000 1330
2 29 1000 13390
3 4 1000 1330
3.2 1000 1330
3.3 1000 1330
3.4 0930 1330
3.05 0930 1330
3.6 0930 1330
3.6 1330 1600
3.7 0930 1330
3.8 6930 1330
3.9 0930 1330
310 0930 1330
3 14 0930 61300
3 12 0930 1300
313 0900 1300
313 1300 1660
314 6900 1300
3.15 0900 1300
3 16 6900 61300
3.417 0900 1360
318 0900 1306
3.19 0900 1300
3 26 0960 1300
3 20 1300 41700
3 24 0900 1300
3 22 0830 1300
3 23 0830 1300
3 24 0830 1300
3 25 0830 1300
3 27 0830 61300
4


DATE | OBSERVING | yuPITeR |IN- | suRsTr- | FREQ. | suPITER TO RANGE
PERIOD OBSER- TEN-| NESS RANGE | LONGITUDE

1974 VATIONS |sITY, MHZ

4 3] 1800 2160

4 6 | 1100 1230

4 6] 1239 1500) 1355 1437 4 | weak 18-35 | 165.1-190.5] 91.2- 9701

4 7 | 4100 1230

4% 8] 4100 1230

4 9} 4100 1230

4 10 | 1100 1230

4 10 | 1900 2200

4 141] 1100 1230

4 14 | 2100 2200

4 12} 1030 1230

413 | 1030 1230

4 43 | 1300 1600] 1500 1515 4 |smootH |16-25 |4177.1-186.2] 83.3- 85.4

4 14 | 1030 1230

4 15) 1030 1230) 1119 1128 2 |sTRONG | 16-21 | 344.3-349.7| 98.7-100.0

4 16 | 1030 1230

4 17 | 1030 1230

4 48 | 1030 1200

4 49 | 1930 1200

4 20 | 1000 1200

4 21 | 1000 1200

4 22 | 1900 1200

4 23 | 1000 1200

4 24 | 1900 1200

4% 25 | 14000 1200

4 26 | 1000 1200

4 27 | 1000 1200

4 28 | 1000 1200

4 30 | 0930 1200

5 1 | 0930 1200

5 2] 0930 1200

5 3 | 0930 1200

5 4 | 0930 1200

5 5 | 0930 1200

5 5 | 1400 1700

5 6 | 0930 1200

5 7 | 0900 1200} 1045 1055 4 |sTRONG |14-20 | 33.0- 3964 | 24607-24801

5 8 | 0900 41200] 160% 4147} 2 |stRonG |10-33 |158.7-221.0 | @4.3- 98.8

5 9 | 0900 1200

5 10 | 0900 1200

5 11 | 0900 1200

5 12 | 0900 1130

5 12 | 1500 1800

513} 0900 1130

5 13 | 1700 2000

5 14 | 0900 1130/1048 1104 4 |stRONG | 14-26 800-1767 | 23005-23248

515 | 0900 1130

5 15 | 1130 1200

5 16 | 0830 1430

517 | 0830 1130

5 22 | 0630 1136

5 23 | 0830 1130] 0914 1030) 2 |sTRONG |411-26 | 225.5-271.5 | 24706-25803

5 24 | 0800 1130] 1000 1030] 1 |weax 141-20 | 43.8- 62.0 | 97.4-104.7

5 25 | 0800 1130

5 26 | 0800 1130

5 27 | 0800 1130 :

5 28 | 0800 1130

5 29 | 0800 1130

18



360

i 1
a
ea °
aa 2°
roo)
— “
°
Lh es
N
-
os
82 a
xn 7
a a
ow
So yw &
= @
oS
to
a
=
q
35
a
2
fi.
°
ey ¢
Zl °
2° S S 8s
8 g ro) xi a 2
> : roy

NOISSIWA 40 ALITIava0ud

35


50

-40

[=]
o

20)

NOISSIW 40 ALIVIav0ud

80 120 160 200 240 280 320 360

40

Fig. 12.

36


UAG-16

UAG-17

UAG-18

UAG-19

UAG-20
UAG-21

UAG-22

UAG-23

UAG-24

UAG-25

UAG-26

UAG-27

UAG-28

UAG-29

UAG-30

UAG-31

UAG-32

“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, 131 pages,
price 70 cents.

"Tonospheric 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, 45 pages, microfiche only, price 45 cents.

"A Study of Polar Cap and Auroral Zone Magnetic Variations", by K. Kawasaki and S. -I. Akasofu,
Geophysical Institute, University of Alaska, June 1972, 21 pages, price 20 cents.

"Reevaluation of Solar Flares 1967", by Helen W. Dodson and E. Ruth Hedeman, McMath-Hulbert
Observatory, The University of Michigan, and Marta Rovira de Miceli, San Miguel Observatory,
Argentina, June 1972, 15 pages, price 15 cents.

"Catalogue of Data on Solar-Terrestrial Physics", October 1972. (now obsolete).

"Preliminary Compilation of Data for Retrospective World Interval July 26 - August 14, 1972",
compiled by J. Virginia Lincoln and Hope I. Leighton, World Data Center A for Solar-Terrestrial
Physics, November 1972, 128 pages, price 70 cents.

"Auroral Electrojet Magnetic Activity indices (AE) for 1970", by Joe Haskell Allen, National
Geophysical and Solar-Terrestrial Data Center, Environmental Data Service, November 1972,
146 pages, price 75 cents.

"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,

Avbei tsaruppe fiir Physikalische Weltraumforschung, Freiburg, G.F.R., November 1972, 324 pages,
price $1.75.

"Data on Solar-Geophysical Activity Associated with the Major Ground Leye] 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, 462 pages, price
(includes Parts 1 and 2) $2.00.

"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, February 1973, 35 pages, price 35 cents.

"Data Compilation for the Magnetospherically Quiet Periods February 19-23 and November 29 -
December 3, 1970", compiled by Helen E. Coffey and J. Virginia Lincoln, World Data Center A
for Solar-Terrestrial Physics, May 1973, 129 pages, price 70 cents.

"High Speed Streams in the Solar Wind", by D. S. Intriligator, University of Southern
California, Department of Physics, Los Angeles, California, 90007, June 1973, 16 pages,
price 15 cents.

"Collected Data Reports on August 1972 Solar-Terrestrial Events", Parts 1, 2 and 3, edited
by Helen E. Coffey, World Data Center A for Solar-Terrestrial Physics, July 1973, 932 pages,
price (includes Parts 1-3) $4.50.

"Auroral Electrojet Magnetic Activity Indices AE (11) for 1968", by Joe Haskell Allen, Carl
C. Abston and Leslie D. Morris, National Geophysical and Solar-Terrestrial Data Center,
Environmental Data Service, October 1973, 148 pages, price 75 cents.

"Catalog of Data on Solar-Terrestrial Physics", prepared by Environmental Data Service,
NOAA, Boulder, Colorado, October 1973, 317 pages, price $1.75.

"Auroral Electrojet Magnetic Activity Indices AE (11) for 1969", by Joe Haskell Allen, Car]
C. Abston and Leslie D. Morris, National Geophysical and Solar-Terrestrial Data Center,
Environmental Data Service, February 1974, 142 pages, price 75 cents.

"Synoptic Radio Maps of the Sun at 3.3 mm for the Years 1967-1969", by Earle B. Mayfield and
Kennon P. White III, San Fernando Observatory, Space Physics Laboratory and Fred I. Shimabukuro,
Electronics Research Laboratory, Laboratory Operations, The Aerospace Corporation, E1 Segundo,
California, 90245, April 1974, 26 pages, price 35 cents.


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

1975 VATIONS SITY MHZ

212 0030 0300) 0030 O04 1 | WEAK 25-34 | 192.5-198.6 90.,9- 92.3

2 412 0000 0000) 2230 231% 14 | WEAK 17-27 | 270.5-300.2 | 277.3-284.2**

213 0030 0300

214 0030 0300

245 0030 0300

218 0100 o300

2 18 2300 2500

219 0160 0230

2 20 g160 0230

2 20 1430 2520

221 1540 2630

2 22 1900 2630

2 23 1900 2630) 2535 2550 14 | MODERATE) 13-17 | 235.2-244.3 1902- 21.3

2 24 1430 2630

225 1430 2630) 2510 2550 4 | STRONG 14-16 | 160.6-184.8 H2e1- 6768

2 26 1430 2630

227 1430 2630

2.28 1430 2630

3 4 1400 2600] 1745 1834, 41 | SMOOTH 20-37 | 133.0-160.8 92e3- 98.8

3 2 1400 2600

3.3 1400 2600

3.4 1400 2600

3.5 1400 2600) 2348 2418 1 | STRONG 15-25 | 23326-25145 | 23626-24068

3.6 1400 2600) 2035 2125 1 | WEAK 20-39 | 26728-29764 3208- 59.7

3.7 1400 2600

3.8 1400 2600; 19095 2023 2 | WEAK 20-36 | 15324-200.6 Bbe4= 9704

369 14400 2600

3 10 1330 2600

344 1330 2600

3 12 1330 62530

3.13 1330 2530

3.14 1330 62530

3.15 1330 2530} 2040 2055 1 | SMOOTH 18-26 | 182.8-191.9 8206 B4e7

3.16 1330 2530

3.17 1330 2530

3.18 1300 2530

3.19 1300 62530

320 1300 2530

3 24 1300 62530

** THIS EVENT ON 12 FEBRUARY WAS RECEIVED DURING OBSERVATION OF THE SUN WHEN
JUPITER WAS OUTSIDE THE NOMINAL BEAMWIDTH OF THE ANTENNAS.

24





ERRATA TO REPORT UAG=25

NOISSIWS JO ALITIava0ud

a ne ~
—_—
— fo
p— |
ane
-—
aa
a
~~
oe
J
wo wo wo
Nw Nu ol a c=) [=]
i=) i=) i=) =) Oo oOo
i=)

200 240 280 320 360
YEAR 1970

166

o

°
co

2
a

LCM (DEGREES)

Fig. 19.

43


PROBABILITY OF EMISSION

ERRATA 10 REPORT UAG-25

25

+20

15

.10

+05

0.00! eed

0 40

80

120 160 200 240
Io (DEGREES) YEAR 1969
Fig. 17.

41

280

levered

320 360

}
}
|
|


DATE OBSERVING JUPITER IN- | BURSTI~ | FREQ. | JUPITER TO RANGE
PERIOO OBSER- TEN-| NESS RANGE | LONGITUDE

1973 VATIONS SITy| MHZ

*3 4 1330 1400

*3 2 1130 1630] 1453 154 1 | SMOOTH 22-36 | 137.0-149.0 9803-10104

3.3 1130 1330

3.4 1430 1330

305 1130 61330

3.6 1130 1330

*3 6 2000 2130

3.7 1130 1330

3.8 4130 1330

3.9 1100 1330

*3 9 4500 1600; 1602 4171 1 | MODERATE) 28-38 | 151.4-193614 9iei-100.8

3 10 4100 1300) 4100 41109 1 | MODERATE] 8-416 | 11902-12202] 25107-25204

3 44 4100 1360

3.12 1100 1300

3 13 1100 1300

3 14 1100 1300

315 1100 1300

3 16 1100 41300) 1212 424 1 | STRONG 16-20 | 345.2-348.2 ULe7= 4204

3.17 1100 1300

3 18 1030 1300

3.19 1030 1300) 1138 414 1 | MODERATE) 16-23 5600- 5762) 28623-28722

3 20 1030 1300) 1230 130 1 | STRONG 10-30 | 23728-25529] 13765-14167

3 24 1030 1300

3 22 1030 61300

3 23 1030 1360

3 23 0000 0000) 1315 143 1 | SMOOTH 20-40 | 35603- 41.7 3368-44 .3*F

3 24 1030 1300

3 25 1030 1300

3 26 1030 61300

3 27 1000 1300

3 29 1000 1300

3 30 1900 1230

3 31 1000 1230

G4 4 1000 1230

4 3 1000 1230) 1105 123 2 | SMOOTH 11-38 | 132.6-184.0 9202-10402

*4 3 1230 1330

4 4 1000 1230

4 5 0930 1230

4 6 0930 1230

4 7 0930 1230

*& 7 1700 2000

4 8 0930 61230

4 9 0930 1230

4 10 6930 1230

* 4 40 1230 1400] 1200 133 2 | SMOOTH 18-35 | 13922-19524 B3e4- 96.6

4 12 0930 1230

& 13 0930 1230

4 14 0900 1230

4 15 o900 1230

4 16 0900 1230) 0955 123 1 | STRONG 10-18 | 24626-340.3| 205.9-227.8

4 17 0900 1230

4 18 0900 1230

419 0900 1230} 1¢00 110 1 | STRONG 10-18 | 341.0- 17.3 9509-10504

4 21 0900 1200) 1190 120 1 | STRONG 12-18 | 31864-35467) 15201-16006

4 22 0830 61200

4 23 0830 61200

& 24 0830 1200

4 25 0830 1200) 1118 120 2 | STRONG 12-24 | 241.3-236.7 | 24821-25401

** THIS EVENT ON 23 MARCH WAS RECEIVED DURING OBSERVATION OF THE SUN WHEN
JUPITER WAS OUTSIDE THE NOMINAL BEAMWIDTH OF THE ANTENNAS.

11

|
|

|
|
|


1
|
|

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

PERIOD OBSER- ITEN-| NESS RANGE | LONGITUDE i

1973 VATIONS [SITY MHZ |
|

17 0500 4130] 1000 4130) 2 | WEAK 14-32 | 22543-27927 | 22106-23463 |
13 0500 1130] 0830 1000) 2 | WEAK 15-28 | 321.6- 16.0 5204- 6502 '
19 | 0500 1130 |
20 | 0500 1430 k
21 | 0500 1130 |
22 G500 1130) 0951 1048 2 |WEAK 15-26 | 25342-28726 | 15822-16602 4
23 0430 1130) 0612 O62% 2 | WEAK 18-25 | 27125-27841 | 33007-33223 i

0430 1130 |
25 | 0430 1430 |
26 | 0430 1130 |
27 | 0430 1130) 0857 0955 1 | WEAK 15-30 | 253.9-289.0 | 88.4- 96.6 |
28 | 0430 1430] 0708 9759 41 |MODERATE} 13-24 | 338.6- 4.0 | 276.6-282.5 |
29 | 0435 1130 |
30 | 0430 1430

PAMADADAODGFADG
n
+

7 4 | O4O0 1130] 1915 1044 4 |MoDERATE| 20-29 | 183.8-200.1 | 193.9-197.7 |
7 2] 0400 1130 |
7 3 | o400 1130 I
7 4 | 0400 4130] 0908 1047 3 |SMOOTH | 46-30 | 235.3-295.1] 75.4- 8904 |
7 5 | 0400 1130] 0453 0614 4 |STRONG | 20-26 | 231.8-282.0 | 242.6-25404 |
7 6 | 0400 1130 }
7 8 | 0330 1130 |
7 9 | 0330 1130 |
7 10 | 0330 4130] 0727 6734 4 | WEAK 25-29 | 358.3- 2.6] 202.5-203.5 |
7 14 | 0330 0950 |
7 12 | 0330 1130] 0624 0635 1 | MODERATE] 20-29 | 261.6-268.3 | 240.8-242.4 |
7 13 | 0330 1130 |
7 14 | 0330 1130 |
715 | 0309 4139 |
7 16 | 0300 1130 }
7 47 | 0300 1130 |
7 18 | 0300 4130 I
7 19 | 0300 4130) 0613 0725 4 |SMOOTH | 20-25 | 229.8-273.3 | 224.5-234.7 |
7 20 | 0300 4130] 0900 1025 2 |wWeAK 20-39 | 121.5-172.8 | 94.3-103.8 }
7 24 | 0300 1130 i
7 22 | 0230 4130] 0433 G50a 1 |wWeaK 18-28 | 261.3-278.9 | 101.2-105.3 |
7 23 | 0230 1130 |
7 24 | 0230 1130 |
7 25 | 0230 1130

7 26 | 6236 1130] 0705 oce3q SMOOTH | 20-31 | 23620-28724 | 2417.3-229.3

ne

0935 1040 SMOOTH 25-25 | 32607- 600 | 23805-24767

7 27 0230 0750
7 27 0900 41200/ 0949 1150} 2 | MODERATE] 26-38 | 125.8-198.9 B4e1-10102
7 28 0230 1130
7 29 0230 1130
7 30 0230 61130
7 34 0230 1130
8 4 0230 1130
8 2 0230 4130) 0751 8755 2 | MODERATE| 20-30 | 238.5-241.0 | 20921-20927
8 3 0230 1130
8 4 6230 1130
68 5 0230 «61130
8 6 0230 61130
8 7 0230 1130
8 8 0230 61130
89 0200 1130] 0917 9929 4 | WEAK 25-23 | 26502-27245 | 20606-20823
8 10 0200 1130] 0510 06039 2 | MODERATE|18-27 | 266.5-298.5 1503- 22.8
8 411 0200 1300

13

|


WORLD DATA CENTER A
for
Solar-Terrestrial Physics

REPORT UAG - 42

OBSERVATIONS OF JUPITER’S SPORADIC RADIO
EMISSION IN THE RANGE 7.6-80 MHz

10 DECEMBER 1971 THROUGH 21 MARCH 1975

by

James W. Warwick,George A. Dulk and Anthony C. Riddle

Department of Astro—Geophysics
University of Colorado
Boulder, Colorado USA

April 1975

Solar-Terrestrial Physics, NOAA, Boulder, Colorado

and published by ZG
U.S. DEPARTMENT OF COMMERCE
NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION
ENVIRONMENTAL DATA SERVICE

Asheville, North Carolina, USA 28801

SUBSCRIPTION PRICE: $25.20 a year; $12.00 additional for foreign mailing; single copy price
varies.” Checks and money orders should be made payable to the Department of Commerce, NOAA,
Remittance and correspondence regarding subscriptions should be sent to the National Climatic
Center, Federal Building, Asheville, NC 28801, Attn: Publications.

“PRICE THIS ISSUE $1.15



OBSERVATION PLOT FOR THE APPARITION OF 1973

AI ANI
AKAMAI WN AAA
AAV NAN N\
IAIN AN NAVAN AY
AANA AAA
(NANA ANNAN
AAA AN XMAS.
AAAI
AAAI
AMAA
AVA NIN AIAN
INN ASME AMMAN

=

120 150 180 210 "240 270 300 330 360

Ze

90

~ 60

30

3

3
270
240
210
180 (ae

)

[)
Lu
oy

LCM (DEGRI

Fig. 10.

34


DATE OBSERVING JUPITER |LN- |BURSTI- |FREQ. | JUPITER TO RANGE
PERIOO OBSER- TEN=|NESS RANGE | LONGITUDE
1974 VATIONS STW MHZ
413 0000 0830] 0118 90730 = | SMOOTH 11-32 | 157.3- 2261 89.1-132.7
114 0000 0830} 0003 0430) 2 |SMOOTH 11-31 | 262.4- 63.8 | 273.0-310.7
4105 0000 0830) 0645 0705) 1 |WEAK 12-20 | 295.9-308.0 | 17363-17601
14° 6 |-0030 0730
4107 |-0100 0730
11 8 0000 0800] 0343 0400] 1 |MODERATE|13-26 | 277.3-287.6 38e0- 4004
4109 0000 0800) 0403 0423) 1 |STRONG 10-16 79 08- 9169 | 24403-24701
414i 10 0000 0800] 0253 0440) 41 | WEAK 12-20 | 188.0-252.7 7708- 93.0
ai 41 0000 0800) 0310 0325) 1 |SMooTH 14-18 | 34827-3577 | 283.7-285.8
ii 12 ooo00 0800
11 13 oo00 9800
11 14 oo00 60800
41 15 Q000 0800) 0208 0335) 2 |MODERATE| 8-18 |193.0-245.6 8o8- 21.0
11 16 0000 0730
ii 17 d000 0730
11 186 0009 0730 | 0044 240! 2 |SMooTH 12-35 | 2316-30325 | 24607-26305
11°19 0000 90730{ 0100 0303| 2 |SMooTH 13-18 33 65-107 .8 9208-11002
0542 0650) 1 |MODERATE|25-24 | 185.8-245.4 | 12804-14203
ii 20 0000 0730) 0645 0256) 1 |SMOOTH 15-20 [17429-25461 | 294.2-312.7
ii 24 0000 0730 | 0054 0225) 4 |SMOOTH 14-418 | 33067- 25.8 | 13808-15107
41 22 0000 0730
11 23 go00 60730
41 24 gooo a700
11 25 0000 0700] 0037 0320) 2 |SMooTH 17-33 | 202.1-300.6 | 230.1-253.1
41 26 0000 0700 | 0539 0640] 1 |MODERATE|14-24 |175.0-193.8 | 116. ~120.5
11 27 Q000 0760 | 0318 0438) 1 |MODERATE|20-26 |246.1-288.5 | 29926-31069
a 27 1900 2200 | 2400 2200| 2 |SMooTH 20-36 | 16201-19824 89e6- 98ei
41 28 0000 9700) 0020 0230] 1 |WEAK 11-21 |282.9- 1.5 | 117.8-136.2
41 29 000 9700) 0503 0603) 1 |STRONG 13-27 | 244.4-280.5 Le3- 9,7
12 1 |-0030 0700
12 2 |-0030 0630/0306 0350) 4 |WEA< 18-24 |261.1-291.3 | 234.0-241.1
12 3 |-0030 0630 | 0427 0550/ 4 |MODERATE|13-35 1194.1-154.3 8907-10104
42 4 |-0030 0630] 0515 0531) 4 |WEAK 18-26 | 283.5-293.2 | 299.8-30201
1204 2000 2300] 2200 2300) 1 |WEAK 18-34 [17101-20704 8105- 90.2
12 5 |-0030 0630/0114 0200] 1 |MODERATE|14-18 | 288.1-315.9 10922-11567
12 6 0225 0630
12 7 |-0030 0630] 0147 9200) 1 |SMooTH 8-17 | 24869-25607 | 16906-16204
12 8 |-0030 0530
12 9 |-0030 0630
12 10 |-0030 0630
412 11 |-0030 0600
12 12 |-0030 0600 | 0148 0200) 1 |WEAK 15-28 | 281.2-288.4 97.6- 99.3
12 13 |-0030 9600] 0330 0402) 1 |moDERATE|12-15 |133.3-152.6 31504-31929
12 14 |-0030 0600] 0310 6407| 1 |STRONG 12-24 | 27165-30569 | 15509-163.9
12 15 0000 0600 | 0615 06104} 1 |SMOOTH 13-29 | 31601-34567 | 33404-34104
12 16 0000 0600) 0400 0520) 1 |WEAK 13-18 | 24204-29048 | 20925-229.9
12 17 0000 0600 | 0010 0335| 2 |MODERATE|16-23 |253.6- 17.6 2045- 4904
12 18 0000 0600
12 19 0000 0600 | 0159 0345) 1 |STRONG 12-20 | 260.2-324.3 8206- 9766
12 20 0000 0530
12 24 0000 0530
12 22 0000 0530
12 23 0a00 60530
12 24 0900 0530/0101 64153} 1 |SMOOTH 8-25 | 256 28-288 62 11.9 18.4
0321 0437; 1 |MODERATE|25-18 | 341.4- 27.4 3008- 41.5
12 25 0000 0530 | 0447 0400) 4 |WEAK 14-18 Th 9-155 63 | 22009-23927
12 26 o000 0530
12 26 2100 2400
22

i
|



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

Glaciology:

World Data Center A:

Glaciology

U.S. Geological Survey

1305 Tacoma Avenue South

Tacoma, Washington, U.S.A. 98402
Telephone (206) 593-6506

Longitude and Latitude

World Data Center A:

Longitude and Latitude

U.S. Naval Observatory
Washington, D.C., U.S.A. 20390
Telephone (202) 254-4023

Meteorology (and Nuclear Radiation):

World Data Center A:

Meteorology

National Climatic Center

Federal Building

Asheville, North Carolina, U.S.A.
Telephone (704) 258-2850

Oceanography:

World Data Center A:
Oceanography

National Oceanic and
Atmospheric Administration
Washington, D.C., U.S.A. 20235
Telephone (202) 634-7249

Notes:

and seven 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) 389-6478

28801

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

Seismology, Tsunamis, Gravimetry, Earth
Tides, Recent Movements of the Earth's
Crust, Magnetic Measurements, Paleo-
magnetism and Archeomagnetism, Volcanology,
Geothermics:

World Data Center A:

Solid-Earth Geophysics

Environmental Data Service, NOAA

Boulder, Colorado, U.S.A. 80302

Telephone (303) 499-1000 Ext. 6311

Solar-Terrestrial Physics (Solar and Inter-
planetary Phenomena, Ionospheric Phenomena,
Geomagnetic Variations, Magnetospheric and
Interplanetary Magnetic Phenomena, Flare-
Associated Events, Aurora, Cosmic Rays,
Airglow):

World Data Center A

for Solar-Terrestrial Physics

Environmental Data Service, NOAA

Boulder, Colorado, U.S.A. 80302

Telephone (303) 499-1000 Ext. 6467

(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.



ERRATA 10 REPORT UAG-25

-10

+08

ire + i)
fo} foo) fo}

NOISSIWS 40 ALITIava0ud

0.00 \ A

80 120 160 200 240 280 320 360

40

LCM (DEGREES) YEAR 1971

Fig. 22.

46


225

20

ite)
4

f=) 10
a fo)

NOTSSIWS JO ALITIGYE0uNd

0.00

360

fo}
iso)

240 280

200

fo)

120
LCM (DEGREES)

80

40

YEAR 1973

Fig. 6.

30


OBSERVATION PLOT FOR THE APPARITION OF 1974

EER

AMAA ON
SAAN AMAA NA ae :
ANI Nt ViNi\\
AAAS AA NN
NOAA \\A AA
AAA AAA AAA
\y AAA AAA
FINAN ANN
NWA AY YANN
ANNAN NN |
\\AAAAWA A
ANVAANIAUNGASN

i) a w N

Be

i)

120 150 180 219 240 270 300 330 360

60 90

30

(DEGREES)
Fig. 15.

Lem

39


.05 5

+04

N =
i) f=)

NOISSIWS 40 ALITISVdOuUd

80 120 160 200 240 280 320 360
YEAR 1972

40

LCM (DEGREES)

Fig. 1.

25



DATE OBSERVING JUPITER IIN- | BURSTI=- | FREQ. | JUPITER I0 RANGE

|

|

PERIOD OBSER- _—_|TEN-| NESS RANGE | LONGITUDE |

1972 VATIONS |SITY MHZ |
|

3 | 2400 2400 I
4 | Goo 0330 |
5 | 0000 0330 |
6 | coco o3v0 |
7 | ooo0 300 |
8 | 0000 o3u0 |
9 | 0000 0300 |
10 | o000 a300 |

1a 2100 2400 |
41 0000 60300
12 oo00 0300
13 0000 60300
14 0000 9300
15 0000 9300
16 0000 0230
17 0000 0230
18 oo0o0 0230
19 Oooo 0230
20 ooco 860230
an 0000 0230
22 0000 0230
23 0000 0230
24 0000 0230
25 oo00 0230
26 0060 0230
27 0000 o260
29 0000 60200
30 |-6030 9020

10 |-0030 0130
41 | -0030 0430
42 | -0030 0139
12 1700 2530
13 1530 2530
44 1530 2530
15 1530 2500
16 1530 2500) 2452 2455 1 | SMOOTH 27-34 | 23365-23543 | 21509-21504
17 1530 2500
18 1530 2500
19 1530 2500
20 1530 2500
21 1530 2500
22 1530 2500
23 1500 2500
24 1500 2500
25 1500 2500
26 1500 2430
27 1500 2430
ca) 2044 2436
30 1500 2430

2 |-0030 ozo |
3 |-0100 9200 |
4 |-0030 0200 }
5 |-0030 o200 :
5 | 4700 2000 }
6 |-0030 0130 |
7 |-0030 0130 i]
8 |-0030 0130 |
9 }-0030 90130 |

|



ERRATA 10 REPORT UAG-25

°
Ts
Oo
g§
=
2
[=e]
Eo
g a
3
Js Ss
OL = oO
in
a Dm
Sue 5
Oo
ta
oO
o S
- So
a eee a
|
| oO
—a ies)
— 2
=] a
°
wo Oo irs) Oo ite} Oo
“ s 7 + e e
Oo
NOISSIWS 40 ALITIAaVa0ud


APPARITION

1974

1973

1972

1964

1963)

1962

ww
I96I

1960

NORMALIZED PROBABILITY
OF EMISSION

ie} 60 120 180 240 300 360

LCM (DEGREES)
Fig. 25
49

VALUE OF PROBABILITY AT PEAK



DATE OBSERVING JUPITER IN- | BURSTI- | FREQ. | JUPITER IO RANGE
PERIOD OBSER- TEN-| NESS RANGE | LONGITUDE
1973 VATIONS ISITY MHZ

26 0830 1260
27 0830 1200
28 0830 1200
29 G830 1200
30 0800 1200 t

1 0800 1200

16 1400 1700
17 0700 1130; 1030 414414 4 | STRONG 12-18 | 25464-27961 3609- 4207
17 1600 1730
168 0700 1130] 0817 14309 14 | SMOOTH 14-24 | 32405- Biot | 22106-24809
19 o700 11390
0700 1130
rey 0700 1130
22 0700 41430) 9917 1055 2 |MODERATE| 8-32 | 24361-30224 | 32400-33728
23 0700 1130
24 0630 1130) 1115 1130 2 | MODERATE} 20-26 | 255.7-264.7 2707 2908
25 0630 1130
26 6630 1130
27 0630 1130
28 0630 1130
2g 0630 1130
3a 0630 -1130) 081% 6830) 2 | STRONG 13-16 | 331.7-339.5 | 14325-14503
31 0630 1130

oao0 1200 |
2] 1200 1500] 1213 1409 1 | MovERATE| 16-28 | 218.2-282.9 | 239.8-254.9 |
3 | 080 1200 |
4 | 0800 1200 |
5 | 0800 1200/ 0810 08634 1 |sTRONG | 14-30 | 162.9-176.2| 95.8- 98.9 ;
6 | 1030 1200 }
7 | 0800 i200 |
a | 6730 1200 I
9} 0730 1200 |
9} 1200 1600] 1254 1415 2 | WEAK 18-31 | 216.8-265.8 | 22906-24401 '
10 | 730 1200 |
40 | 1500 1800 : |
41 | 0730 1130) 0812 1007} 2 |STRONG | 41-20 | 347.4- 57.0 | 235.7-252.9 |
12 | 0730 1130) 0832 1139 2 |sTRONG |12-28 | 150.1-257.7| 8229-10861 |
13 | 0730 1130] 9858 1007) 2 STRONG | 41-24 | 316.4-358.2 | 290.1-299.8 |
24] 0730 1130 |
15 | 0730 1130] 0850 1130] 2 |stRONG | 411-24 | 252.7-349.4 | 335.8-358.4 ‘
16 | 0730 1130] 0735 9803 2 |STRONG | 42-20 | 358.0- 14.9 | 16827-17207 |

iT

|

4 0600 1130) 0735 0826 1 | MODERATE| 20-28 | 247.5-278.3 | 18405-19107
2 0600 1130
3 0600 14130) 0824 1014 2 | STRONG 14-25 | 21606-28469 | 23820-25420
4 0600 1130
5 0600 1130
6 0600 1130
7 0600 1130
8 0600 1130
9 0530 1130

10 0530 1130] 0915 1130) 2 | SMOOTH 14-35 | 22326-30562 | 23004-249.5
a4 0530 1130
12 0530 1130
13 0530 1130
14 |..0530 1130
15 0500 4130) 0915 0930) 41 | SMOOTH 20°25 | 25608-26569 | 15301-17002
16 0500 1130

DOAHDHHAHHOHAHHOOTH VUVVEUVGVEVVUVGMEUHUHU KEEFE E KUEN Fee EE
y
°

12