THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS

UT UT UT DB
760320 0350 0545 0425 0.8 A
760321
760322 f
760323 1740 1815 1755 2.4 C DEEP,SYMMETRICAL TROUGH.UNUSUAL FEATURE. t
760323 2040 0015* 2245 U.8 A ‘j
760324
760325
760326
760327
760328
7603: 0813 1440 0835 2.6 E END OF LGE FEATURE. NEAR 1440. i
760330 0800 1020 0745 0.6 B SOME INTERFERENCE.
760330 1100 1210 1140 0.6 A SOME INTERFERENCE.
760330 1340 1530 1410 1.8 C
760330 1920 1950 1940 0.7 A RATHER DEEP FOR A.
760330 2010 2140 2040 .0 8B
760330 2200 2240 2210 0.4 B
760330 2300 0245%* 0100 1.2 A L,2300-0000.
760331 0745 1240 0820 0.9 A INTERFERENCE.
760331 1400 1520 1503 0.7 A
760331 2330 0500* 0345 9.6 E V SHARP ST L, 2330-0045 7.8DB 0300 i
760401 0500 0640 0525 3.6 C MF(0515-0540),1RREG.T. t
760401 1700 1810 1745 0.6 A SOME ST.
760402 0200 0830 0315 1.8 E EX PERIOD OF SLOWLY VARYING ABSN.I TOWARDS END.
760402 1405 1630 1430 0.6 A
760402 1945 2330 2105 1.2 A INTERFERENCE AT START.T,2140-2330.
760402 2340 0500* 0240 1.3 B EX PER OF WEAK,ST ABSN,1 CLEAR A-TYPE FEA(0220-0310
760403 0500 1320 0620 5.8 E ST.IRREG.FEATURE.T.1130-1320.4.3DB@0815. E
760403 1410 1700 1530 1.2 B EX PERIOD OF WEAK,ST ABSN.ONE FAIRLY SHARP EDGE. |
760403 1755 2030 1840 2.8 C SEVERAL SHARP PEAKS.
760403 2100 2200 2126 1.0 B
760403 2220 0120* 2300 1.6 B 2 B FEAS FOLLOWED BY EX PERIOD OF WEAK,IRREG ABSN.
760404 0120 0515 0145 3.9 C ST.TOO IRREG FOR D.
760404 0515 0920 0620 7.2 E L(#1.0DB0515-0610) ,MF(0610-0920).
760404 0920 1250 1215 2.8 C ST. i]
760404 2000 2115 2040 2.3 F F-TYPE EDGE,PREC.BY L(WITH A-TYPE DIP).FAST REC.1.
760404 2115 1500* 0545 4.2 E EX PERIOD W IRREG FEA.3.6DBG@2210;3.1DB@3310. }
760405 ;
760406 0900 1400 1015 4.0 E UNUSUAL ST AT 0940 SUDDEN DROP IN ABSN. T 1215-1400
760406 1610 1650 1630 0.8 B CUSP.
760406 1710 1920 1820 1.5 C ST.INTERFERENCE. |
760406 2100 0130* 2340 2.5 C L W ST.,2100-2300.MF HAS ST.,&A-TYPE SYMM. |
760407 0250 0520 0355 2.7 C A-TYPE SYMMETRY.ST.
760407 0735 1450 1105 3.6 E 1140-1450 T,W SMALL D-TYPE FEATURE.3.3DB@0840.
760407 1715 1905 1720 0.8 A SHARP ONSET.
760407 1915 2355 2055 2.2 E EXACT START CONFUSED BY INTERFERENCE.2.1DB@2215. I
760408 0000 0240 0020 2.3 C '
760408 0350 0830 0430 2.8 E ST. '
760408 0920 1345 1040 1.5 E t
760408 1400 1510 1445 0.6 A }
760408 1750 1840 1820 0.6 A
760408 1900 2000 1950 1.0 B SMALL PEAK
760408 2100 0555* 0245 3.4 A L,2100-2520.L HAS A-TYPE FEA(2210~2300).1.3DB@2240.
760409 1040 1306 1200 0.4 A MAY BE ARTEFACT OF Q.D.CURVE.
760409 1410 1500 1430 1.6 F

14


THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB
770808 0515 1010 1039 2.1 D
770808 1015 1300 1238 0.6 A ST.WEAK.
770808 1300 1520 1411 0.6 A
770808 1750 1910 1819 1.2 B 1.2DB@1851.
770809 0000 0220 0046 2.4 C SINGLE FEA IN SOME ST.
770809 0500 0950 0519 2.1 C 2 RD FEA SEP BY PER OF STEADY ABSN. T(0730-0950)
770809 1020 1500 1300 1.2 A BROAD ST.
770809 1500 1700 1615 1.8 C 3 PEAKS RATHER DEEP # DURATION FOR A-TYPE 1.5DB@152
770809 1700 1840 1747 1.2 A L,T MF(1730-1810)
770809 1840 2110 2008 2.2 C SINGLE FEA.
770809 2110 2220 2154 1.0 A
770809 2220 2330 2255 1.6 C L,MF(2250~-2330)
770809 2330 VO00* 2353 0.8 A
770810 0020 0145 0048 1.3 A ST.
770810 0300 0715 0459 2.6 E L,MF(0330-0600)
770810 0930 1330 1040 1.0 A
770810 1330 1720 1456 1.0 A BROAD ST.
770810 1720 2050 1902 1.2 A ST.
770810 2330 0430% 0229 2.4 E MUCH ST. PULNS(2.8DB@2750-2810),PER 3MINS.
770811 0430 0830 0547 2.6 E
770811 0830 1140 0845 2.9 D ST.
770811 1500 1640 1521 1.3 A 1 AT END.
770811 2015 2040 2024 2.2 C TRIANGULAR SINGLE FEA.
770811 2045 2140 2058 2.3 F SHORT L, ONSET AT 2058
770811 2140 2240 2145 1.8 C SMALL PEAK,SOME ST. FOLLOWING.
770811 2240 0100* 0030 0.9 A PER OF IRREG ABSN WITH 2 ILL DEF FEA.1. 0.5DB@2339
770812 0405 0630 0505 1.5 A BROAD ST.
770812 0630 0930 0809 1.3 B PER OF STEADY ABSN,WLTH SMALL PEAK.
770812 0930 1845 1031 4.3 E IRREG SCOOP FOLL BY PEAK DECLINE IN ABSN T
770812 2240 2340 2258 0.6 A I.
770813 0210 0502 0301 1.7 C SINGLE FEA,T WITH A-TYPE DIP(0400-0502)
770813 0530 0750 0608 2.1 C MERGES INTO REG OF STEADY ABSN.
770813 0750 1200 1000 1.2 A REG OF SLOWLY VARYING ABSN MAX AT APPROX 1000.
770813 1200 1700 1500 1.3 A BROAD ST.
770813 2150 2340 2229 1.8 F EDGE AT 2227 L IN ST,MF(2227-2250)T.1.5DB@2227
770814 0820 1100 0958 0.8 A
770814 1230 1640 1317 2.7 C SHORT L, MF(1245-0215)T. MF IS IRREG SCOOP
770814 1810 2015 1939 1.3 C 3 FEA.CUSP. 1.2DB@1828.0.8DB@1854.
770814 2300 2340 2320 1.2 B PEAK.
770815 0100 0140 0119 0.4 A
770815 0200 0340 0245 0.9 A
770815 0420 0640 0438 2.3 D PEAK RATHER TOO MUCH OF CUSP FOR CLASSIC D.BROAD ST
770815 0705 1430 1545 1.7 E 2 FEAS.(1.2DB@0747), SOME DATA LOST.
770815 1430 1930 1608 0.5 A WEAK.
770815 2110 2230 2148 0.5 A I.LEVEL CHANGE.
770816 0550 0630 0605 0.5 A
770816 1230 1520 1336 2.3 C L,(1230-1330),MF(1330-1430),T.
770817 0400 0515 0457 0.5 A
770817 0710 1145 0752 0.8 A 2ND FEA HAS SOME ST.
770817 1145 1440 1059 3.5 C C-TYPE FEA,W ST+SHARP EDGE@APPROX1059.T W ST 121440
770817 1650 1810 1744 1.0 B 2 BROAD CUSPS.0.7DB @1714.
770817 1930 2220 2153 5.0 F LW ST
770817 2220 0500* 0155 2.5 E CLASS EDGE ST (0040-0210) T AFTER 0230
770818 0500 0945 0700 1.8 A ST.
770818 1315 1630 1429 0.8 A SMALL FEAS 0.6DB@1542.

35

—



THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB

770510 1900 0210* 2210 2.2 GL@T.

770511 0700 0820 0720 0.6 AL

770511 0820 1240 0900 3.2 E EDGE @ 1150;2.5DB.

770511 0820 1240 1150 2.5 F EDGE MINI FEA.

770511 1400 1800 1615 0.7 A WEAK

770511 1810 1940 1900 2.2 F EDGE

770511 1940 0130* 0010 1.3 E

770512 0300 1100 0540 4.5 E MAJOR STORM

770512 1900 0100* 2220 0.5 E

770513 1220 1940 1500 0.8 A

770513 1940 0200* 2030 1.6 A 2 WEAK FEAS.

770514 1920 2105 2060 0.8 A L TO WEAK FEAS.

770514 2105 2137 2105 1.8 F SMALL EDGE

770514 2140 0000* 2250 1.6 C

770515 0130 0400 0246 2.0 C IRREG ABSN.

770515 1000 1115 1040 0.9 A

770515 1310 1415 1340 1.0 B 2 PEAKS

770515 2100 0100* 0040 3.8 E

770516 0100 0210 0205 1.8 A STEADY ABSN

770516 0200 0800 0600 3.2 E NOLSY SIGNAL

770516 1000 1200 1100 1.3 C SYM FEA

770516 1200 1430 1268 1.4 A 3 SYM DIPS

770516 1440 1610 1530 1.2 A

770516 1720 1930 1820 1.1 A

770516 2000 2200 2130 2.0 C 2 PEAKS

770516 2000 2200 2130 2.0 C

770516 2315 0320% 0250 3.0 C IRREG ABSN

770517 0430 0600 0440 3.6 D FAST ONSET W ST

770517 0740 1030 0805 3.7 E

770517 1100 1330 1230 2.0 C

770517 1700 0200* 0115 3 AW ST.

770518 0510 1100 0520 9 E ONSET FAST, 2 PEAKS;1.9DB @

770518 1150 1400 1230 5 A BROAD FEA

770518 1400 1730 1600 BA

770519 1220 1630 1519 6 A IRREG ABSN

770520 1310 1630 1410 8 A WEAK

770520 1630 2100 1710 1c

770521

770522 0600 1200 0650 2d01

770523 1400 1730 1730 5 A 2 WEAK FEAS

770524

770524 2010 2120 2040 cT

770525 1710 2010 1845 A

770526

770527

770528 1905 1950 1915

770529

770530

770531 2000 0110% 2300 A

770601 1930 2030 1945 B L&T.

770601 2100 OOU0* 2110 A LRREG ABSN

770602 0030 0215 0120 B LRREG FEA

770602 0215 0720 0400 A

770602 0910 1520 1100 A

770602 1650 1830 1710 A



THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB
771105 1700 1900 1800 0.8 A
771105 2230 0040* 2352 0.4 C 2 SMALL ROUNDED FEAS.
771106 1400 1510 1426 0.5 A SMALL DIST.
771107 0220 0730 0314 1.0 A
771107 2145 2230 2147 0.8 B
771108 1200 2030 1646 0.9 A L, MF(1400-1750). T.
771109
771110 1430 1440 1437 0.5 B
771111 1100 1310 1200 0.6 A IRREG ABSN
771112 0000 0810 0500 1.2 A
771112 0910 1540 1344 1.2 C L(0910-1230). MF(2 BROAD PEAKS).
771112 1540 2140 1914 1.3 A
771112 2140 0140* 0009 2.1 D IRREG ABSN. FAST ONSET OF 10 MINS.
771113 0140 0830 0349 3.1 E T(0500~-0830).
771113 0920 1005 0947 1.2 B
771113 1020 1400 1032 2.3 D
771113 1550 2345 2001 2.4 F IRREG ST.
771113 2345 0440*% 0004 2.4 C
771114 0440 0840 0519 2.3 C MF(0440-0710) T.
771114 0920 1100 1010 1.3 ¢
771114 1715 2100% 1720 1.1 FL
771114 2100 0240* 2341 4.7 F V FAST ONSET.
771115 0350 0850 0545 1.8 EL, MF W ST (0420-0920). T.
771115 1050 1350 1125 2.8 E
771115 1640 2040 1842 1.8 E IRREG
771115 2300 0240% 0012 1.0 A
771116 0620 1300 0929 2.8 E 2.6DB @ 0710.
771116 1300 1400 1320 2.2 F ONE STEP ON ONSET.
771116 1700 0110*% 2343 1.2 A BROAD ST.
771117 0110 0940 0407 1.2 A
771117 1015 1500 1237 0.8 A
771117 2110 2330 2231 1.0 A L, MF(2015-2300). T.
771118 0930 1400 1057 0.5 A
771118 1730 2300 2005 0.6 A IRREG.
771119 0120 0230 0157 0.6 A
771119 0440 0840 0624 0.6 A
771119 1830 0400* 2010 0.5 A BROAD PEAK @2000.
771120 2100 2200 2107 0.8 B
771121 0000 0230 0049 0.9 A L, MF(0030-0120). T.
771122 1150 1940 1239 1.6 A MF(1150-1430) T.
771123
771124
771125 1730 2200 1752 1.7 F EDGE @1849
771125 2200 0500* 2347 1.6 F SHARP FEA @ 2347.
771126 0500 1200 0906 1.0 A IRREG L. MF(0810-1030). IRREG T.
771126 1210 1510 1325 0.8 A IRREG ABSN
771126 1710 1820 1719 1.0 B
771126 2300 0230* 0102 2.5 C L, MF(0030-0200). T.
771127 0600 0800 0702 0.7 A BROAD ST.
771128 2100 0600* 0342 0.5 A 3 DIPS
771129 1600 2250 1952 0.8 B SMALL PEAK
771129 2250 0200* 2339 1.3 C CUSP W WINGS
771130 0710 1030 0735 1.7 C IRREG T (0910-1030).
771130 1300 1520 1349 0.9 A BROAD ST.
771130 1600 0100* 2011 0.8 A BROAD MAX 1910-2200.

40

|
|



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wary J eck]


THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT. DB

791008 2042 2306 2047 2.0 F F @ 2214,1.8DB.

791008 2306 0246* 0042 2.6 F

791009 0531 1430 0903 2.4 E L. MUCH ST.

791009 1836 1921 1844 1.7 F MUCH ST.

791010 0156 0552 0256 2.4 E SL ST.

791010 2034 2139 2113 1.6 C GRAD FEA.

79LOIL

791012 2244 0O17* 2315 2.1 F

791013

791014

791015

791016 0250 0552 0445 1.3 C NO MAIN FEA.

791017

791018

791019

791020

791021 2115 2214 2137 2.4 F

791021 2315 0045* 2357 1.0 CL & T.

791022

791023

791024

791025

791026

791027

791U28 2042 0035* 2057 0.6 B SERIES OF FEAS.

791029 2055 2127 2054 0.7 B

791030

791031

791101 1827 2247 2144 1.7 C 2 SPILKE-LIKE FEAS.

791101 2302 0127* 0106 1.4 C

791102 0220 0900 0602 2.1 C GRAD FEAS.

791102 1851 2047 2002 1.0 BL & T.

791103 1726 1859 1827 0.6 BL.

791103 1932 2151 2030 1.4 C SPIKE @ 2030.

791104 0036 0511 0137 1.2 E NO ST.

791105

791106

791107

791108

791109 2011 2304 2044 1.8 C T.

79LLLO 2131 2257 2147 0.8 B LSOLATED FEA.

7¥1111 0036 0341 0230 1.0 B LONG L & T.

791112

791113 O151 V657 O618 1.1 E NO MAIN FEA.

791113 1731 2225 2044 1.0 E SMOOTH FEAS.

791113 2238 O120% 2349 1.6 C

791113 0305 0600 0352 2.2 E T.

7OLLL4

791115

791116

791117 1956 2021 2005 0.5 B

791118

791119 2157 2208 2204 0.5 B

791120

791121

68



THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB
780801 1.
780802 2032 2055 2040 0.4 B
780803 2348 0306* 0004 1.6 E
780804 0306 0320 0316 1.3 C SHARP PEAK.
780804 0320 0340 0329 1.5 F STEPPED ONSET.
780804 0340 0435 0406 2.4 C QUITE FAST ONSET.
780804 0435 0548 0515 1.1 E MANY SMALL PEAKS
780804 1909 1919 1915 0.6 B
780805 0253 0520 0416 1.3 C L.
780805 0624 1310 0920 2.6 E GRAD FEAS.
780805 1404 1437 1416 0.5 B
780805 1711 2303 2012 1.3 E MANY QUITE FAST ONSETS.
780805 2336 0144* 0036 1.1 F MUCH IL.
780806 0305 0450 0419 1.7 C V. SHARP PEAKS &l.
780806 0510 1122 0803 4.9 E 1 GRAD FEA W ST.
780806 2352 0125* 0003 1.2 C L. CUSP.
780807
780808
780809
780810 2128 2230 2152 0.6 BT.
780811 0138 0414 0201 0.7 A 1 GRAD FEA W SL IL.
780811 1615 1650 1633 0.5 B 1 @ START.
780812 0255 0640 0400 1.5 E 2 SMOOTH EVENTS.
780812 0705 1335 0826 2.7 E L, SERIES OF PEAKS.
780812 2025 2241 2115 1.3 CL, T, &1-
780813 0056 0523 0342 1.4 E 1. GRAD FEA.
780813 1200 1446 1224 1.7 E 1 @ START.
780813 2000 2053 2021 0.6 B SMALL FEA
780813 2356 U0145* 0030 1.0 C 1. 1 SMOOTH FEA.
780814
780815
780816 1948 2052 2023 1.0 C LITTLE ST.
780817 1227 1507 1407 1.3 E SERIES OF SMALL PEAKS.
780818 0037 0147 0118 1.4 C CUSP.
780818 1752 1815 1800 0.6 B SL I.
780818 1848 1940 1906 5.1 F L. FAST ONSET & FAST DECAY.
780818 2051 2119 2106 0.8 B
780818 2138 2348 2240 1.5 E IRREG ABSN.
780819 0852 1134 0952 0.6 A SL ST.
780820
780821
760822
780823
780824
780825
780826
780827 0403 0423 0411 0.5 B SMOOTH FEA.
780827 1848 1902 1852 0.6 B SMOOTH FEA.
780827 2332 0228* 2343 1.3 E SERIES OF FEAS.
780828 0229 0602 0453 6.9 E 2 SPIKES @ 0519 & 0530UT.
780828 1946 2124 2106 1.4 C 2 MAIN FEAS.
780828 2139 2233 2200 2.0 C 3 FEAS.
780828 2246 0015* 2358 1.5 C CUSP @ END.
780829 0127 1104 0428 4.4 E FAST ONSET @ 0410UT. IRREG ABSN.
780829 1151 1302 1223 1.3 CL.

50



THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS

UT UT UT DB
780610 1942 2206 2126 0.8 A SLIGHT ST.
780610 2246 2338 2305 1.0 B
780611 0224 0511 0313 2.5 E L. 1 PEAK.
780611 0732 0848 0818 1.0 B
780611 0902 1014 0944 0.7 A
780611 1206 1326 1225 0.8 A
780612
780613
780614
780615
780616 1928 2037 1956 1.4 C
780617 1100 1336 1210 0.8 A
780617 2312 0050* 0004 0.7 B
780618
780619 0035 0215 0116 0.8 B
780619 1050 1215 1134 0.9 A 1@ END.
780619 2040 2200 2126 0.7 B L TO NEXT EVENT.
780619 2200 0210% 2226 1.3 E
780620
780621 0200 0320 0252 2.0 C STORM
780621 0330 0520 0400 4.2 E STORM. SHARP PEAKS.
780621 0520 0830 0632 1.6 E END OF STORM.
780621 2314 0200* 0013 2.1 E Ll.
780622 0210 0323 0300 2.9 C 1. SHARP PEAKS.
780622 2023 2126 2042 0.9 A SLIGHT ST.
780622 2334 2352 2338 1.0 B QUITE FAST ONSET.
780623 0124 0234 0242 1.3 C
780623 0837 1300 1209 2.5 E 2 PEAKS.
780623 1652 1854 1816 1.0 C
780623 2136 0014* 2331 2.4 E ROUNDED PEAKS.
780624 0020 0112 0109 2.1 C FAST END.
780624 0123 0134 0130 1.9 C SHARP CUSP.
780624 0134 0330 0144 2.4 FL.
780624 0406 0530 0402 1.1 C LRREG ABSN.
780624 0546 0750 0628 2.1 C
780624 2000 2148 2118 1.6 C 1 SHARP PEAK WL & T.
780624 2202 2325 2228 0.8 B 2 SMALL PEAKS.
780625 0036 0347 0226 1.4 E IRREG ABSN.
780625 0908 1100 0912 1.0 C
780625 1830 2112 2031 1.4 C€
780625 2118 2134 2123 1.1 F SHORT TIME.
780625 2305 0049% 2309 0.8 B QUITE FAST ONSET.
780626 0448 0720 0533 1.8 E LRREG ABSN.
780627 2000 2050 2030 1.8 C SHARP PEAK.
780628 0014 0040 0030 0.5 B I.
780628 0942 1142 1018 0.8 B QDC LEVEL JUMPS @ 1142.
780629 2122 2250 2142 3.1 C END LOST IN POWER FAILURE.
780630 1200 1350 1253 3.1 C MUCH ST.
780701
780702
780703
780704 0638 0902 0714 0.9 A SL ST.
780704 1400 1730 1523 0.7 A ST.
780704 2244 2336 2256 2.6 F LITTLE ST.
780705 0020 0350 0206 3.5 E STORM.

48

|
f



THE ABISKO CATALOG (Continued)
DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB
|
781102 2306 0023* 2313 0.6 B |
781103 0109 0416 0236 1.1 E SL ST.
781103 1758 0142* 2023 0.8 A MUCH I, MANY SMALL PEAKS.
781104 2232 2335 2244 1.0 B D SHAPE.
781105 0250 0610 0322 2.2 E U MAIN FEA W T OF 1.5HRS.
781106 |
781107 2233 0050* 2242 2.5 F
781108 0153 0220 0212 1.0 C QUITE FAST DECAY.
781108 0354 0600 0456 0.6 A ;
781109 0231 0326 0254 1.1 C CUSP. t
781109 0620 0709 0658 0.6 B
781110 1738 1748 1742 0.4 B 2 SMALL DIPS.
781110 2156 2243 2226 2.9 C 1 MF WL &T.
781111 0058 0149 0124 0.5 B GRAD EVENT. |
781111 0246 0914 0540 1.0 E PROLONGED EVENT. F
781111 2008 2024 2012 1.0 B 1 SMALL DIP.
781112 0100 0311 0132 2.6 EB SPIKE @ O111UT,2.5DB.
781112 0716 0852 0812 1.6 C INTERMITTENT lL.
781112 1022 1202 1105 1.2 C 1 BEFORE & AFTER.
781112 2017 2118 2054 2.2 ¢
781112 2130 2226 2158 0.5 B SLL. |
781112 2356 0740* 0112 3.4 E MANY FEAS TOG, BUT ABSN NEVER FALLS TO ZERO. |
781113 2004 2017 2007 0.9 B 1 SHARP DIP. }
781113 2040 2207 2046 0.6 B |
781113 2236 2334 2307 1.0 C MINI D SHAPE.
781114 1652 1908 1718 0.6 A SL ST. i
781114 1908 2252 1912 1.0 F SMALL FEA FOR CLASS.
781115 0228 1608 0712 2.1 E 12HR EVENT W GRAD ST.
781115 1905 1949 1913 0.7 B MINI D. |
781116 1508 1619 1519 0.5 B i
'
781117 |
781118 0034 0145 0104 0.4 A i
781118 1828 1944 1850 0.4 B
781119 0314 0520 0343 1.5 C LARGE CUSP. ;
781120 0352 0742 0520 1.4 C CUSP. ;
781120 1803 1841 1826 1.2 C SOME I. F
781120 1905 2048 1906 2.0 C I @ START. '
781120 2304 0230* 2336 1.5 E
781121 0447 0708 0551 1.8 E GRAD FEAS.
781121 0850 1204 1025 1.5 E SL I @ END.
781121 2206 0253* OO11 2.1 E FAST ONSET @ OUOS5UT.
781122 0324 1122 0956 3.9 E VERY GRAD FEAS.
781122 1149 1225 1208 0.6 BI.
781122 1458 1610 1548 0.7 BL. 1
781122 0803 1832 1809 1.1 C D SHAPE W 1. |
781122 1848 1928 1854 1.9 C 1 SHARP PEAK W T. |
781122 2100 2153 2102 0.5 B SL Ll. I
781123 1816 2259 2231 1.4 E SMALL EVENT.
781123 2356 0135* 0001 0.4 A
781124 1728 2043 1829 2.6 F PEAKS W 3 SPIKES BUT IN I.
781124 2056 2110 2058 1.2 F SOME 1. SHORT EVENT.
781124 2214 2310 2225 0.9 B QUITE FAST ONSET.
781124 2310 2340 2319 0.4 B 1 SMALL DIP.
781125 0106 0850 0530 1.5 E PROLONGED GRAD ABSN.
781125 0853 1017 0859 0.8 B GRAD ST.

54


THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB

790125 0218 0712 0354
790125 1922 1953 1942
25

3. IRREG ABSN.

0.
7901 2015 O138* 2029 2.

i.

le

SHORT EVENT.
EDGE @ MAX. LONG T. if
790126 0150 0554 0425
790126 0558 0852 0739

790126 1625 1750 1730
790126 1934 2106 1955
790126 2140 2212 2152

LITTLE ST.
SPIKE ONSET.

E
A
E
E
E
0 B
3.5 F
0 B
790126 2246 O115* 2307 4 Cc 3 PEAKS.
790127 0129 0911 0555 3 E PROLONGED EVENT W ONLY GRAD ABSN. 1
790127 1702 1754 1718 0.4 B LITTLE sv.
790127 1804 2030 1950 1.6 E 1 MF W ST.
790127 2101 2204 2120 2. C SERLES OF PEAKS.
790127 2353 0023* 0004 O. B 1 SMALL PEAK. ,
790128 0443 0628 0501 0. B 1 FEA W SBAN. |
}
790128 0633 U807 0732 0.5 B |
790128 1900 1930 1922 0.7 B 2 SMALL PEAKS. [
790129 0453 0718 0617 0.8 A LONG B. d
790129 2253 0451* 0049 0.9 A 0.9DB @ 0231UT. LONG B. \
790130 2042 0039%* 2224 1.4 E IRREG ABSN. t
790131 |
790201 |
790202 0131 0220 0143 0.5 B LONG T. SMOOTH FEA. |
790202 0504 0604 0532 0.9 B SYM FEA.
790203 1822 1911 1958 0.7 B SL ST.
790204 1647 1824 1720 0.8 B 3 SMALL FEAS.
790204 1826 1926 1850 1.4 C L TO SHARP ONSET. y
790205 0011 0044 0033 1.3 CL. ;
790205 U54i 0809 0643 1.2 E 1 SMOOTH SYM FEA.
790206 0254 0525 0429 1.6 E 2 SMOOTH DIPS WL & T.
790206 0600 0646 0621 0.4 B
790206 1904 2005 1939 0.4 B SL I.
790206 2131 2211 2156 1.5 C CUSP WT.
790207
790208 0201 0244 0215 0.6 B 1 SMOOTH FEA W T.
790208 1827 1907 1832 0.4 B
790208 2227 0112* 0024 0.8 BL
790209 0234 0438 0306 0.5 A SL ST.
790209 2223 2241 2229 0.8 B
790210 |
790211 0223 0538 0343 0.5 A SL ST. |
790212 0034 0132 0049 0.7 B t
790212 0136 0516 0353 0.8 A IRREG ABSN. |
790212 0520 0558 0533 1.3 C ENDS 1N I. t
790213 '
t
790214 1
790215 2016 2212 2136 0.4 A SL ST. I
790216 0616 0602 0.4 A ‘
790217 '
790218 2019 1958 0.5 B L TO NEXT EVENT. |

790218 2214 2031 1.9 F LONG T.

790218 2228 0218%* 2244 1.5 F SHARP, SMALL EDGE.
790219 0224 0332 0244 1.4 €

790219 0356 0630 0438 1.6 E ENDS IN 1.

790219 2204 2303 2230 0.5 B SL I.

|
|
|
t
|
|
|
i
t

58


THE ABISKO CATALOG

(Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT uT B
780424 1230 1300 1235 B CHART TIMES ARE
780424 1630 2110 1930 A ST. CHART TIMES ARE
780424 2230 0100* 2320 Cc CHART TIMES ARE
780425 0100 U505 0240 E CHART TIMES ARE
780426 0220 0500 0230 E CHART TIMES ARE
780426 0600 1000 0800 E I. CHART TIMES ARE
780426 1300 1800 1720 E 2 PEAKS.CHART TIMES ARE
780426 1800 2230 2030 E St. CHART TIMES ARE
780427 0000 0230 0200 Cc CHART :-TIMES ARE
780427 1700 0400* 2110 E IRREG ABSN.CH TIMES ARE
780428 0800 1100 0915 EL. CHART TIMES ARE
780428 1700 2250 2050 E Lét. CHART TIMES ARE
780429 1320 2100 1900 A I @ START. CH TIMES ARE
780430 2200 0100%* 0000 B SMALL PEAKS. CH TIMES ARE APPROX.
780430 0100 1000 0520 E GRAD FEA. CH TIMES ARE APPROX.
780430 1100 2300 1700 A CF. PCA.CHART TIMES ARE APPROX.
780430 2200 2250 2220 Cc CHART TIMES ARE APPROX.
780501 0100 0830 0400 E GRAD FEA. CH TIMES ARE APPROX.
780501 1200 1400 1240 C QDC LOW.CHART TIMES ARE APPROX,
780502 2100 0U00* 2350 E ST. CHART TIMES ARE
780503 0100 1300 0600 E CHART TIMES ARE
780503 1400 1500 1430 E CHART TLMES ARE
780503 1500 1900 1630 E CHART TIMES ARE
780503 1900 2100 2020 E CHART TIMES ARE
780504
780505
780506 2136 2224 2144 B
780507 0023 0158 0053 B
780507 0352 0820 0513 E 1 @ START & END.
780507 1833 1941 1854 C SMOOTH ST.
780508 1826 1959 1903 B
780509 0351 0542 0440 C I. 1 LARGE PEAK.
780509 0944 1202 1039 E CUSP W ST IN L.
780509 1428 1511 1440 B
780509 1538 1616 1557 B
780509 1933 2114 1949 Cc
780510 2037 2124 2104 C 1 PEAK. L.
780510 2231 2321 2224 B
780510 2334 0123* 2348 Cc
780511 0142 0528 0401 E STORM.MAIN PEAK W FAST ONSET.
780511 0528 0734 0616 E ST.
780511 0845 1000 0908 B
78U511 1012 1052 1022 B
780511 1820 2007 1822 F VERY FAST ONSET.
780511 2116 O002* 2234 E SMOOTH ST.
780512 0014 0047 0036 C ACTIVITY UNTIL 1100.
780512 0052 0210 0108 Cc
780512 0316 0420 0345 c
780512 0446 0547 0528 Cc
780512 0557 0733 0620 c
780512 0742 0832 0808 B
780512 0853 1113 0932 E
780512 1639 2100 1738 E SERIES OF PEAKS.
780512 2100 2300 2132 Cc
780512 2322 0025%* 2325 F

46



THE ABISKO CATALOG (Continued) j
;
DATE $TART END MAXIMUM TYPE COMMENTS
UT UT _UT_ DB i
760607 1545 1800 1651 0.7 A |
760607 2140 0030* 2215 2.2 F L(2140-2212).
760608 0430 0800 0628 0.7 A
760608 0950 1150 1111 0.64
760608 1225 1320 1312 0.5 A WEAK.
760609 1100 1420 1253 0.5 A SOME DIFFICULTY WITH Q.D.CURVE. SOME 1.
760609 1910 2100 1945 0.5 A SOME DIFFICULTY WITH Q.D.CURVE. SOME 1.
760610 1460 1600 1509 0.5 A SOME DIFFICULTY WITH Q.D.CURVE.
760610 2250 2350 2325 2.7 C
760610 2350 0630* 0339 5.4 E CONSIDERABLE ST.
760611 0630 0735 0657 0.9 A
760611 0800 1030 0819 0.6 A WEAK ABSN.
760611 1030 1450 1135 1.3 C FEATURE CONSISTS OF SEVERAL PEAKS & T.
760611 1630 1835 1647 0.9 B FEA.SIMILAR TO ONE IMMED.PRECEEDING, BUT WEAKER.
760611 2015 2200 2055 1.0 B ST,INCL.1 SHARP EDGE. Q.D.LEVEL UNCERTAIN.
760611 2315 0030* 2349 1.0 A Q.D.LEVEL UNCERTAIN.
760612 1030 1500 1308 0.9 A L(1030-1145)MF W SOME ST;T.(1330-1500) ;
760613 0810 0920 0854 0.6 A
760614 |
760615 2035 2215 2049 2.2 C SYMMETRICAL,MF 2035-2105;7. 4
760616 1025 1150 1107 0.6 A WEAK.
760617 0435 0530 0507 0.5 A
760617 1035 1120 1056 0.4 A.
760617 1930 2320 2129 0.9 A L(1930-2115)
760618 0000 0400 0147 1.6 E IRREG ST;ROUGHLY A-TYPE SYMMETRY OVERALL.
760618 0450 0630 0510 1.0 A
760618 1900 2200 2055 1.7 A LGE,SOMEWHAT IRREG.A-TYPE FEATURE.
760618 2200 0130*% 2314 0.7 A MF (2200-0000)T.
760618 1915 0000 2040 0.8 B L(1915-2040) ;MF(2040-2215);T( 2215-0000); 0.8DBG@2315.
760619 |
760620 0825 1315 0907 1.2 A |
760621 '
760622 F
760623 0220 0530 0303 0.9 A
760624 0400 0840 0437 0.9 A
760624 1740 1855 1804 1.2 A E
760624 1855 2100 2014 1.3 C BLUNT CUSP.
760624 2100 2220 2117 1.0 B 2 PEAKS.TAIL TO PRECEEDING FEATURE. |
760624 2245 0415* 2328 1.9 C 2 FEAS #1 HR LONG SEP BY PO WK ABSN 2700-1.5DB
760625 0430 1115 0539 1.2 A PERIOD OF SLOWLY VARYING ABSN.LONG T.
760625 1150 1615 1358 0.6 A SMALL FEATURES.
760625 1645 2110 2000 2.0 C L(1645-1900),MF W ST.
760625 2110 0020* 2214 2.1 €
760626 0210 0350 0242 0.5 A
760626 1955 2330 2023 1.2 B MF (1955-2130)T(CONFUSED BY I.)
760627 0200 0320 0243 0.7 A |
760627 1800 2030 1928 0.6 A }
760628 2345 0900* 0048 1.1 A PERIOD OF SLOWLY-VARYING ABSN.1.0DB@ 3125.
760628 1255 1440 1338 0.6 A TINY FEATURE PRECEEDING SMALL FEATURE.
760629 E
760630 0750 0930 0831 1.6 D |
760630 1050 1520 1150 2.4 C MF (1050-1245)T. f
760630 1650 1830 1750 1.0 A ST. :
760630 2105 2220 2115 1.5 C ST.ROUND PEAK.FEATURE COULD BE WEAK F-TYPE. ;
760630 2350 0740* 0447 2.2 E 2 IRREG.FEATURES.#EQUAL DURATION,2ND W PULSATLONS.
18



THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB

770819 0100 0400 0154 5.3 E SYM OVERALL,HLY STRUCTURED, FEAS.?PULSATIONS j
570719 0420 0800 0443 3:1 D ST.PULSATIONS.

370819 0915 1615 1032 2.3 E LGE SMOOTH DIPS.WEAK PULSATIONS.1.8DB@1506.

570819 1910 2145 2036 1.6 C A-TYPE L(1910-2000),SHARP ST.

570820 0700 1800 0756 1-2 A SOME ST. 0.9DB @1119.

770821 0645 0815 0720 1.0 A 0.9DB@0754. |
770821 0815 1810 1112 1.3 A BROAD ST. |
770821 1810 1500* 2057 1.2 A V LONG PO V STEADY ABSN.SLOW DEC AFT 0700,220877 |
770822 2100 0040* 0000 0.8 A 0.6DBQ2143. |
770823 1240 1630 1524 0.4 A |
770823 1750 2215 1831 2.1 C B-TYPE L TO LGE FEA IN ST.MF(1805-2215),1-0DB@1701

770823 2115 0420* 0008 1.5 A

770824 0420 1215 0445 1.4 A

370824 1415 1715 1436 1.0 A 0.8DB@1543.

770824 1630 1930 1710 1.2 A ST.

770824 2100 0400* PCA..

370825 1150 1415 1229 1.7 C FAIRLY BROAD ST. SYMETRICAL OVERALL.

370823 1500 2200 1835 2.3 E L,(1500-1800);MF(2LGE FEAS IN ST);T(2030-2200)

770826 0000 0050 0024 1.4 C st.

570826 0350 0745 0454 1.8 E SMALL SUBSIDUARY DIP AT APPROX 0740.

770826 0800 0950 0832 0.7 A SOME ST.

770826 1030 1200 1105 0.6

770826 1215 1430 1327 0.9 A ST. |
770826 1650 1730 1711 0.5 |
770826 1800 1910 1844 0.6 i
770826 1910 2050 1940 0.9 A ST.1. |

770827 0110 0630 0335
770827 0630 0920 0650
770827 0920 1620 1047
770827 1650 1910 1758

SOME BROAD ST ABSN FALLS TO 1.2DB AT 0630
ABSN 0.8DB AT 0920.

BROAD ST.V GRADUAL REDUCTION OF ABSN.
ST.L,MF(1720-1910)

fore
re
Cb SEPO> PEPEO AOMUM> SES S> MAHON

770827 1910 2040 1920 1.2 © S¥.T(1950~2040) |
770827 2110 2250 2116 0.7 A L,ST.

770827 2310 0010* 2318 0.9 A T, (2345-2410)

770828 0420 0815 0513 1.5 ST.(BROAD).SOME UNCERTAINTY ABOUT LEVEL.

770828 1150 1610 1411 0.9 if
770828 1810 1950 1900 0.8

770829 0600 1700 1312 2.9 EXTENDED, FEATURELESS L(0.6DB)MF(2PEAKS )1250~1400,T. t
770829 2115 0030* 2157 0.7 I
770830 0030 0530 0237 0.8

770830 0600 0800 0711 1.5

770830 1020 1400 1247 0.6

770830 1630 1720 1656 1.2

770831 t

770901 0015 1515 1232 1.1 A EX PER OF SL VARYING ABSN SHALLOW EDGES 0930,1215. E
770902

770902 1740 1845 1807 1.3 C ST.SMALL FEA. MF(1740-1820);T.

770902 2045 0210% 2250 1-1 A ‘
770903 0210 0530 0335 1.2 A ST.(BROAD). j
770904 0820 1000 0852 1.0 A MF(0820-0910),T. }
770905 2300 0730* 0100 1.1 A |
770906 t
770907 2210 2320 2230 1.7 C SMALL SCALE ST INCLUDING TINY F EDGE.
770908 0215 0350 0230 0.6 A

770908 2055 2200 2057 1.0 F SMALL EDGE,T(2100-2200),1.-

770909 1845 2020 1911 1.0 A ST.

36



THE ABISKO CATALOG (Continued)

DATE START END MAXLMUM TYPE COMMENTS
UT uT UT DB

790904 1639 1707 1652 1.0 €

790905 0248 0518 0313 2.0 EL & T.

790905 1747 1805 1800 0.5 B 1 SMALL DIP.

790905 1956 2119 2018 1.9 F 4 SHARP PEAKS.

790906 G131 0246 0149 1.3 C SMALL T-

790906 0345 0814 0447 3.1 C€

790906 2256 2305 2303 0.6 C T. MUCH ST.

790907

790908

790909 1817 1913 1856 0.5 BL.

790909 2236 2341 2311 0.7 B SHARP ST.

790910 1316 1446 1406 0.7 B

790910 2301 2355 2316 0.5 A

790911 0731 0845 0802 0.8 A LONG L & T.-

790911 1146 1217 1158 0.9 BI.

790912 UOO5 0105 U021 0.7 A SYM. FEA.

790912 2301 0041% 2318 1.9 C 2 FEAS & T.

790913 0245 0420 0315 1.1 C 2 SYM. FEAS.

790914 1942 1951 1943 0.8 B SHARP ONSET.

790915 0016 0046 0021 0.8 B SHORT T.

790915 1023 1035 1024 0.7 B LONG T.

790916 U102 0204 0153 0.5 A

790916 0941 1008 0943 1.6 C SHORT EVENT.

790916 2146 0126*% 2244 1.9 E ST. L & T.

790917

790918 0137 0152 O147 B SHARP ONSET.

790918 0152 0213 0202 C SMALL T.

790919

790920 2211 2354 2333 C 3 FEAS.

790921 0028 0436 0052 E MAJOR FEA W 4 MAIN PEAKS.

790921 2314 0135* 0021 cLé& tT.

79092

790923 0231 0621 0453 2.1 C SMOOTH FEA.

790924 2006 0436* 0306 2.1 E NO MAIN FEA.

790925 2136 2325 2145 2.0 DT.

780925 2354 0526* 0340 2.5 E IRREG ABSN.

790926 1930 2100 2612 1.6 F SHORT EVENT.

790927 0142 0616 0329 2.5 E IRREG ABSN.

790928 0434 0749 0528 3.5 E

790928 0808 1226 1009 2.9 E GRAD FEA.

790928 1950 2332 2057 1.1 E 4 MAIN PEAKS.

790929 0018 0208 0048 1.6 C MANY FEAS.T.

790929 0219 0800 0461 3.5 E GRAD FEA.

790929 2315 0009* 2344 1.9 C SYM FEA.

790930 0153 0438 0246 2.5 E IRREG. ABSN.

790930 0451 1114 0653 2.5 E 5 SYM PEAKS.

790930 2105 2218 2108 1.7 C SYM FEA & T.

791001 0026 0223 0102 2.3 C POINTED PEAK & T-

791002 2303 0003* 2365 1.0 C FAST ONSET & FAST DECAY.

791003 0221 0422 0305 2.3 CL

791003 0662 0739 0633 1.6 C

791004 0926 0955 0949 1.6 C SHORT FEA.

791005 2224 2318 2249 1.1 G

791006 0146 0532 0229 2.1 E SL ST.

791007 0546 0945 0746 1.3 E GRAD FEA.

67



CONTENTS

Page
Introduction . «6 6 6s ee ee ee eee ee eee eee wee eee eee 1
Form of Catalog . 2. 2 2 2 2 2 ee ee ee ee wo re ee ee ew ew ee ew 1
Event Type (Based on Event Shape). . 2... 0 ee ee ee ee eee eee 1
Abbreviations and Symbols Used in COMMENTS column. . 2. 2.2 0 see se eee 2
Catalog Use in Statistical Studies . . 1 2 2 5 2 2 ee eee see ee one 2 |
Acknowledgments. . 2. 2 2 2 2 © © ee ee we ee ee eee eee ero eee 3 |
References . 2 2 6 se 6 ee ee ee ee ee ee ee ee ere eee ere ee 3 |
Illustrations of Event Type 2 2 2 2 ee ee we ee eee ww wer ene 4 |
THE ABISKO CATALOG . 2 2 2 ee ew we ee ew ee we we wee ew eee eee 9

FIGURES
1. Representative type A and typical type B radio absorption events .... 4
2. Two characteristic type C radio absorption events. ....+.+..ssee6 5
3. Typical type D radio absorption event . 2... 2 2 ee ee ee eee we 6
4. Two characteristic type E radio absorption events. . 2.2... esses 7

5. Representative type F and typical type G radio absorption events .... 8 i

TABLES
1. Polar Cap Absorption Events During Period Covered by Catalog. ..... 2

2. Estimated Percentage of Data Lost by Interference ..... 2c eee 3





THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
ut UT UT DB
791122
791123
791124 0326 0548 0440 1.4 B LITTLE ST.
791124 2104 2206 2117 1.7 F
791125 U103 GOO3 U223 1.8 E SL ST.
791126 1904 1936 1919 0.7 Bl.
791126 2101 2144 2112 0.4 B
791127
791126
791129
791130
791201
791202 0141 0738 0402 1.9 D 2 CLASSIC FEAS. [| @ END.
791203 6311 0431 0417 0.7 A T.
791204 0425 0840 0728 4.8 EL & T.
791204 1716 1758 1717 5.6 F MUCH ST.
791205
791206
791207
491208 0350 0610 0418 0.7 A
791208 1925 2030 2010 0.6 B ST.
791209
791210
79L2Z11 L810 1906 1615 0.9 B MAIN FEA @ END.
791212
791213
791214
791215 V419 V600 U454 0.9 A
791216 0332 6640 0603 0.6 A GRAD FEA. 1 @ END.
791216 2155 0048* 2331 6.8 BL TO SYM. FEA.
791217 0331 0620 0435 1.2 C SL ST WT.
791217 1645 1807 1757 0.6 B SL ST.
791217 2051 2204 2145 0.6 B SHARP ONSET.
791218
791219
791220 1738 1817 1800 0.7 B NO ST.
79122) 1747 1811 1804 0.5 B DOUBLE FEA.
791222 0414 0654 0537 1.1 A
791222 1910 2135 2049 0.7 B SHARP ONSET.
791223
791224
791225
791226 2016 2210 2019 1.4 F ST.
791227 U8U0 0900 832 1.5 C GRAD ONSET.
791228 0342 0621 0457 1.06 E NO ST.
791228 1314 1450 1332 1.7 C i.
791228 214) 1442* 0358 2.9 E MUCH ST LN 17HR EVENT.(2.2DB @2241).
791229 1626 1638 1633 0-6 B SHORT FEA.
791229 1920 2358 1928 3.1 F 3 SPIKES IN ONSET.
791230 UOUU 06U0 0015 1.7 E
791230 VO0U 1440 vb42 3.5 E le
791230 1614 33 1855 1.2 C i.
791230 2234 2240 1.0 B SYM FEA.
791231 1832 1653 0.7 B
791231 2114 0044* 2303 3.1 F ST.

69



UAG-19

UAG-21

UAG-22

UAG-23

UAG-23A

UAG-24

UAG-25

UAG-26

UAG-27

UAG-28

UAG-29

UAG-30

UAG-31

UAG-32

VAG-33

UAG-34

UAG-35

UAG-36

UAG-37

“Reevaluation of Solar Flares 1967," by Helen W. Dodson and E. Ruth Hedeman, McMath-Hulbert
Observatory, University of Michigan, Pontiac, MI, and Marta Rovira de Miceli, San Miguel
Observatory, Argentina, June 1972, 15 pp, $0.15.

"Preliminary Compilation of Data for Retrospective World Interval July 26 - August 14, 1972," by
J. Virginia Lincoln and Hope I. Leighton, World Data Center A for Solar-Terrestrial Physics, NOAA,
Boulder, CO, November 1972, 128 pp, $0.70.

"Auroral Electrojet Magnetic Activity Indices (AE) for 1970," by Joe Haskell Allen, National
Geophysical and Solar-Terrestrial Data Center, Boulder, CO, November 1972, 146 pp, $0.75.

"U.R.S.1. Handbook of Ionogram Interpretation and Reduction," Second Edition, November 1972,
edited by W.R. Piggott, Radio and Space Research Station, Slough, UK, and K. Rawer, Arbeitsgruppe
fur Physikalische Weltraumforschung, Freiburg, GFR, November 1972, 324 pp, $1.75.

"U.R.S.I. Handbook of Ionogram Interpretation and Reduction," Second Edition, Revision of Chapters
1-4, edited by W.R. Piggott, Radio and Space Research Station, Slough, UK, and K. Rawer,
Arbeitsgruppe fur Physikalische Weltraumforschung, Freiburg, GFR, November 1972, 135 pp, $2.14.

"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, NOAA, Boulder, CO, December 1972, 462 pp, $2.00
(includes Parts 1 and 2).

"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, University of
Colorado, Boulder, CO, February 1973, 35 pp, $0.35.

“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, NOAA, Boulder, CO, May 1973, 129 pp, $0.70.

“High Speed Streams in the Solar Wind," by D.S. Intriligator, University of Southern California,
Los Angeles, CA, June 1973, 16 pp, $0.15.

"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, NOAA, Boulder, CO, July 1973,
932 pp, $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, Boulder, CO,
October 1973, 148 pp, $0.75.

"Catalogue of Data on Solar-Terrestrial Physics," prepared by NOAA Environmental Data Service,
Boulder, CO, October 1973, $1.50. Supersedes UAG-11, 15, and 20 catalogs.

“Auroral Electrojet Magnetic Activity Indices AE(11) for 1969," by Joe Haskell Allen, Carl C.
Abston and Leslie D. Morris, National Geophysical and Solar-Terrestrial Data Center, Boulder, CO,
February 1974, 142 pp, $0.75.

‘Synoptic Radio Maps of the Sun at 3.3 mm for the Years 1967-1969," by Earle B. Mayfield, Kennon
P. White III, and Fred I. Shimabukuro, Aerospace Corp., E1 Segundo, CA, April 1974, 26 pp, $0.35.

“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, Boulder, CO,
May 1974, 142 pp, $0.75.

“Absorption Data for the IGY/IGC and IQSY," compiled and edited by A.H. Shapley, National
Geophysical and Solar-Terrestrial Data Center, Boulder, CO; W.R. Piggott, Appleton Laboratory,
Slough, UK; and K. Rawer, Arbeitsgruppe fur Physikalische Weltraumforschung, Freiburg, GFR, June
1974, 381 pp, $2.00.

"Catalogue of Digital Geomagnetic Variation Data at World Data Center A for Solar-Terrestrial
Physics," prepared by NOAA Environmental Data Service, Boulder, CO, July 1974, 20 pp, $0.20.

"An Atlas of Extreme Ultraviolet Flashes of Solar Flares Observed via Sudden Frequency Deviations
During the ATM-SKYLAB Missions," by R.F. Donnelly and E.L. Berger, NOAA Space Environment
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 pp, $0.55.

“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, Boulder, CO,
December 1974, 142 pp, $0.75.



THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB
770404 2020 2205 2040 3.4 C ST
770404 2205 0020* 0000 0.8 A
770405 0020 0210 0100 1.8 C IRREG
770405 1700 1930 1820 2.2 E
770405 2050 2210 2100 2.0 F
770405 2350 0200* 0115 3.7 E IRREG
770406 0610 0900 0630 2.5 E
770406 1630 1830 1645 4.2 F SERIES OF SHARP ONSETS
770406 2300 1040* 0415 4.1 E VERY DISTURBED PER.
770407 1040 1800 1240 1.3 ¢
770407 1900 1950 1910 1.4 C
770408 0020 0140 0025 4.2 F SHARP ONSET
770408 0600 1330 0920 3.0 E 2 MAIN PEAKS
770408 1400 2215 2015 2.0 E WEAK FEAS
770408 2215 0550* 0020 2.4 €
770408 0550 1300* 0700 3.8 E
770409 1640 OO00U* 1840 1.6 C ST & T
770410 0120 0420 0245. 3.6 C ST
770410 0515 1300 0540 1.8 E 1RREG 2 FEAS
770410 1510 1715 1657 1.6 E
770410 1830 0000* 1905 2.1 C SEV. FEAS
770411 0120 0300 0140 2.0 C I.
770411 0440 0910 0500 2.7 DI & T
770411 1350 1710 1500 1.3 A SMOOTH
770411 1730 1810 1750 8.2 F SHARP ONSET, L & T.
770411 1840 2240 1910 2.1 C
770411 2240 0120% 2340 1.8 C
770412 0930 1020 0955 1.1 C L & T. MINI CLASSIC EVENT
770412 2230 0020* 2230 2.1 F SPIKE & SHARP ONSET.
770413
770414 0000 0400 0050 1.5 C 2 PEAKS & T(0200-0400).
770414 0840 0940 0900 1.8 D
770414 0940 1730 1300 0.8 A
770414 2130 OOL0* 2255 1.9 CT
770415 0100 0400 0200 1.0 AL
770415 0400 0900 0610 1.9 E
770415 1550 2120 1640 1.0 A
779416 0500 0800 0600 0.7 A
770416 1530 1920 1720 1.2 C SMALL EVENT
770416 1920 2200 2020 1.9 ¢
770416 2300 0040* 2345 1.5 C ST
770417 0230 0520 0245 2.0 D ST
770417 0520 1030 0800 1.0 A IRREG
770417 1030 1700 1200 1.2 A BROAD FEA
770417 2130 2330 2220 1.0 B
770418 0015 0430 0140 0.6 A
770418 1200 1530 1310 0.5 A
770419 0040 0200 6110 1.7 C L TO STORM
770419 0440 0530 0500 2.3 C MAJOR STORM
770419 0530 0820 0730 4.6 C ST MANY PEAKS
770419 0835 1000 0910 4.4 C ST
770419 1800 2330 1840 1.6 C SMOOTH EVENTS
770419 2330 0430*% 0220 2.7 E
770420 0430 1300* 1020 5.0 F L W ST
770420 1930 2015 1955 4.4 C SHARP PEAKS

29

|



THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB
760409 1500 1800 1715 1.5 A ST.1.0DB@1550.
760409 1800 2220 2100 2.3 C 2.1DB@ 1850.
760409 2340 0545* 0400 4.5 B 2,B-TYPE. IRREG L 2340-2515. 1.0DB @ 0000 AND 0040
760410 0650 0915 0730 1.0 A
760410 0915 1200 1020 0.9 B WEAK,IRREG ABSN.W ONE B-TYPE FEATURE.
760410 1200 1240 1215 1.5 C L(1200-1215),EDGE &
760410 1215 1700 1330 1.6 C PER OF STEADY ABSN.(#0.8DB)CONTAINING 2 SMALL FEAS.
760411 0000 0410 055 0.9 A 0.9DB@ 0245.
760411 1120 1345 1200 1.5 C
760411 1345 1510 1435 2.4 C PEAKS.ST.
760411 1930 2300 2205 1.3 A SECOND DIP SUPERIMPOSED AT END.O0.9DB@ 2015.NEAR1930
760412 0500 6645 0520 1.5 C
760412 0745 1845 0815 2.2 E EXT.FEA TYPE C. INITIAL DIP(0745-0900)FOLL BY T.
760413 0100 0315 O150 1.7 A
760413 0415 0810 0515 1.2 A
760413 1020 1420 1230 0.8 A
760413 0610 1815 1700 0.7 A
760413 2200 2315 2230 1.2 B MAY HAVE L,FROM #2030.
760414 0406 0711 0555 1.2 A CHART ENDS 0711.NEW CHART BEGINS 0723.
760414 0723 1210 0750 3.2 E END OF LGE FEATURE.
760414 1250 1515 1400 1.6 C L.
760414 1700 1850 1710 1.0 BT.
760414 2015 0020* 2102 2.0 C L(2015-2100),T
760415
760416 0315 0610 0420 1.3 A
760416 2140 0010* 2145 2.1 C MF(2140-2200)T.ONSET SHARP.SMOOTH M.F.
760417 1921 1929 1924 0.5 B SMALL FEATURE.
760518
760419 0220 0500 0310 0.6 A
760419 1100 1320 1120 0.5 A
760419 1605 1830 1710 1.8 C MF(1605-1715);T. ST.
760420
760421 1600 1920 1740 0.6 A
760422 0245 0645 0430 1.1 C BLUNT CUSP.
760422 0645 1205 U840 1.9 C PERIOD OF IRREG.ABSN.L(0645-074U);1.7DB@0940.
760422 1850 1945 1915 1.3 B CUSP.
760422 2055 0500* 2310 2.1 E LGE FEA.,W CONSIDERABLE ST,BUT A-TYPE SYMM OVERALL.
760423 0500 1000 0520 1.7 D LONG T.
760423 1600 1830 1950 0.5 A
760424 0455 1250 1940 2.3 E LGE.FEATURE,ST.
760424 1710 1950 1835 3.1 C 1 V.SHARP PEAK,RATHER THAN EDGE.
760424 2115 2245 2200 0.9 A
760424 2310 0030* 2315 1.3 B CUSP.
760425 0300 0410 0320 0.5 A
760425 0555 0730 0630 1.7 A UNUSUALLY DEEP .
760425 1950 2220 2115 2.0 C L,1950-2045.
760426 0540 0750 0625 0.6 A
760426 1600 1745 1710 0.5 A
760427 2350 0145%* 0040 0.7 A
760427 0320 0720 0550 1.1 A T,0620-0720. 1.0DB@ 0420.
760427 1810 0040* 2340 1.3 A 1 & SL ST.
760428 2030 2330 2145 2.5 C L,2030-2140.
760429 0250 0420 0345 0.7 A
760429 1230 1500 1315 1.1 B PERIOD OF STRUCTURAL ABSN.
760429 1530 1800 1650 0.6 A

15

|



THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB
760817 G000 O110 022 U.6 A IRREG.
760817 0610 0720 0623 0.5 A
760818
760819 0405 0905 0450 U.8 A 2 BROAD DIPS.
760819 2145 2220 2150 0.6 A SOME IL.
760820 0945 1040 1000 0.5 A WEAK IRREG FEA.
760821 1110 1210 1137 0.5 A WEAK SOME BROAD ST.
760821 1800 1835 1813 0.5 B
760821 2130 2330* 2228 1.6 C L, MF(2200-2245), T.
760822 0000 0045 0010 1.3 B TINY SHARP EDGE IN MF @0O10.
760822 0045 0350 0101 1.2 A
760822 1200 2120 1800 0.8 A
760822 2120 O800* 0431 1.5 AL, MF (0145-0530), T.
760823 0840 1310 1042 1.2 AL, MF (1010-1103), T W SMALL PEAK.
760823 1310 1745 1421 0.9 A SEVERAL WEAK FEAS.
760823 2113 2315 2121 3.8 F EDGE @2113 MF(2113-2145). T.
760823 2315 1100* 0500 3.2 E IRREG L (2315-2800). LGE DIPS.
760824 1100 1615 1206 2.4 C IRREG DIP, MF (1100-1340). T.
760824 1730 1920 1823 2.4 C L, MF (1750-1920).
760824 1945 2130 2028 1.2 C 1 @END.
760824 2215 0000* 2253 1.2 C L, MF(2245-2315). T.
760825 0210 0455 0254 2.3 E PULSATIONS.
760825 0550 0840 0633 2.3 C
760825 0840 1630 1057 2.3 E BROAD MF (0840-1230), LONG T W SMALL FEAS.
760825 1630 2130 1811 5.1 F L, MF (EDGES @ 1811& 1922). T.
760826 0030 0500 0240 2.8 C L, MF (0210-0330). T.
760826 0500 1650 0655 3.3 E ENORMOUS. SHORT L MF(U550-1650).
760826 1650 2000 1831 2.2 C I @ END.
760826 2200 0320% 2354 2.5 C
760827 0950 1510 1027 6.5 C MF (0955-1120). T.
760827 1510 1740 1710 1.0 BL, MF (1630-1730).
760827 1740 1920 1836 1.6 CL, MF(1830-1920).
760827 1920 014U* 2247 1.2 C L, IRREG ABSN.
760828 0140 0520 0343 0.6 A
760828 1145 1300 1210 1.0 A
760828 1300 1555 1349 1.7 C CUSP SUPERIMPOSED ON TYPE A DIP.
760828 1555 1640 1602 1.3 C
760829 0430 0750 0537 0.4 A
760829 0750 1700 1008 0.7 A
760830 O115 0250 0135 0.8 A MF(0115-0222). T.
760830 0505 0830 1416 0.7 A
760830 2130 2300 2222 1.0 A
760831 1310 1600 1344 2.2 C L, MF STARTING W SMALL EDGE (1337-1410). T.
760831 1600 1920 1732 1.1 A
760831 1930 0200* 0017 0.9 C I.
760901 0330 1000 0446 1.2 A
760901 1445 1710 1526 1.0 AL, MF(1520-1555), T.
760901 1710 1930 1800 0.8 A
760901 2300 0145* 0122 1.2 A
760902 0145 0445 0300 1.2 C L, MF(0230-0415), T.
760902 0445 0730 0611 3.1 DL, MF (0540-0730),
760902 0730 1045 0759 2.1 E 2 LRREG FEAS.
760902 1045 1410 1227 1.0 E IRREG ABSN.
760902 1730 2030 1848 1.0 B L (1730-1830).
760902 2030 0145* 2234 1.2 A

ral

|

|
|
|
|
|


THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS

UT UT UT DB
760523 0750 1200 0910 3.4 E LGE.SCOOP.
760523 1250 1420 1340 1.3 C COMPLEX FEA,A-TYPE DIP FOLLOWED BY SHARP EDGE.
760523 1630 2130 2000 0.6 A 4 MINOR FEATURES.
760524 0110 0300 0200 U.8 A
760524 0300 0440 0320 0.5 A
760524 0600 0730 0630 0.6 A
760525 2300 0145* O110 0.6 A |
760525 0640 1000 0745 0.8 A CHART ENDS 1236.NEW CHART BEGINS 1300. |
760525 1540 1630 1610 0.9 B |
760526 i
760527
760528 0015 0030 0040 1.0 A SHORT EVENT. .
760528 1000 1300 1150 0.9 A ‘
760528 1315 1420 1320 0.9 B
760528 1730 1950 1915 1.1 A O.6DB@ 1755.

17

760528 1950 2330 2000 2.8 F 2 F EDGES FOLL.BY A PER-OF VARYING ABSN.@ 200082030
760528 2330 0200* 0025 2.0 C |
760529 0230 0500 0355 1.3 C IRREGULAR. d
760529 1030 1605 1050 2.1 C MF(1030-1230),FOLL.BY T WITH A-TYPE DIPS.
760529 1900 2015 1945 2.6 C ST. ij
760529 2015 2050 2025 7.0 C VERY DEEP FEATURE,REACHING MAX.ABSN.IN # 5 MINS. |
760529 2050 0600* 2350 2.8 E PERIOD OF IRREGULAR ABSN.2.2DB@2250;1.7DB@2720. |
760530 0940 1220 1150 1.3 A |
760530 1220 1630 1340 0.6 A SLOWLY VARYING ABSN. I
760530 1720 2050 1830 2.0 A ST. i
760530 2050 0115* 2210 2.7 C CUSP.2300-2515.T7. |
760531 0300 0700 0420 2.0 D L,0300-0350;.RATHER SLOW ONSET FOR D. |
760531 0715 1340 0900 U.8 A PERIOD OF SLOWLY-VARYING ABSN. |
760531 2040 0000* 2210 0.8 A |
760601 0850 1210 1015 0.8 A CHART ENDS 1118. LEVEL CHANGES. |
760601 1635 1650 1640 0.5 A TINY FEATURE. |
760601 1815 1940 1853 1.0 B L,1815-1840,T. |
760601 1945 2215 2043 1.0 A ST. |
760601 2215 0130* 2319 1.3 C SOME DOUBT ABOUT Q.D. i
760602 0600 0830 0654 0.9 A |
760602 2020 2220 2106 0.6 A SOME SLOWLY-VARYING ST. |
760603 0040 0210 0133 0.6 A Ll. i
760603 0400 0530 0527 0.9 A I. |
760603 0730 2200 1913 0.9 A 0.6DB@ 2115. I
760603 2300 0020* 2335 1.2 A |
760604 0240 0440 0317 2.0 C ST. I
760604 1040 1230 1129 0.5 A |
760604 1320 1520 1411 1.2 A ST. |
760604 1640 1920 1713 0.7 A i
760604 1920 2240 2135 1.8 C L,1920-2100. i
760605 0440 06106 0454 1.3 D SMALL.IL. |
760605 0610 0930 0725 1.0 Al. |
760605 1210 1540 1240 1.5 C L,1210-1235 1 |
760605 1910 0100* 2311 2.0 EB PERIOD OF STRUCTURAL ABSN. 1.8DB@2025. }
760605 2300 0330* 0228 1.3 E |
760606 '
760607 2240 0020* 2352 0.6 A |
760607 0315 0510 0410 1.3 A I
760607 0615 1000 0745 0.8 A |
760607 1400 1545 1438 0.8 A ST @ END. |
|
|
|
‘fi


THE ABISKO CATALOG (Continued)
DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB
770420 2015 2350 2210 0.9 A
770421 0020 0240 0140 1.4 A WEAK
770421 0400 0730 0440 1.0 A
770421 0730 1600 0820 2.1 E LRREG
770421 2040 2320 2140 1.5 A FEA & T
770422 0320 0706 0520 0.9 A ILRREG
770422 0900 0940 0915 1.1 C 1 SMALL ROUNDED DIP
770422 1140 1500 1300 0.9 A BROAD DIP
770422 1700 2000 1820 1.7 C 2 FEAS
770423 0300 1630 0520 1.0 A WEAK ABSN
770424 1000 1500 1040 0.9 A
770424 1520 1845 1550 2.3 C ST
770424 2000 0150* 2100 1.3 E I
770425 0140 0430 0240 3.5 E
770425 0615 1400 0715 1.6 E 3. BROAD FEAS
770425 1400 2030 1830 1.1 A 1 TINY DIP
770426 0140 0600 0340 1.2 A
770426 0600 0900 0840 0.8 A
770427
770428
770429 0520 0730 0600 1.9 D
770429 0830 1020 0920 2.9 C SYM FEA W ST
770429 1200 1300 1230 1.9 C1
770429 1900 2315 1940 1.8 C
770430 0330 1100 0520 2.1 D MF(0430-0730). L & T
770430 1930 0250* 2220 0.8 A EXTENDED PO WEAK ABSN
770501 0250 0640 0340 1.64
770501 1910 0145* 2330 2.1 E
770502 0045 0425 0047 3.0 F SHARP ONSET. SERIES OF PEAKS;3.1DB @ 0140.
770502 0425 1000 0600 2.4 E
770502 1030 1300 1145 3.0 C IRREG FEA
770502 1640 1845 1640 1.5 F SMALL SHARP ONSET.
770502 1320 1640 1325 1.1 C WEAK
770502 1640 1845 1720 2.3 C
770502 1940 2210 2000 2.9 F L BEFORE SPIKE.
770502 2330 0200* 0045 2.0 E 2 ROUNDED PEAKS.
770503 0520 1300 1000 2.4 E BROAD FEAS
770503 1300 1810 1545 0.8 A WEAK
770504 0800 1000 0840 0.6 A
770504 1050 1220 1110 1.6 C 2 EDGES
770504 1750 1845 1820 3.5 C SYM DIP
770504 1905 2230 1905 2.5 F V. SHARP ONSET
770504 2245 O0100* 2310 1.7 B
770505 0130 0320 0215 1.3 C L&T. SMOOTH FEA.
770505 0640 0830 0710 2.3 B SLIGHT ST.
770505 1620 1815 1745 0.6 A WEAK DIP
770505 1840 0020* 2130 1.9 F L(1840-2125).
770506 0240 0520 0250 2.4 C
770506 1055 1300 1130 1.7 C
770506 1400 1700 1510 1.0 A
770506 2000 0500* 0140 1.5 A EXTENDED PO WEAK ABSN
770507 2040 2200 2050 0.9 B L& LONG T
770508 0705 0830 0707 0.8 B T
770509 1600 1720 1650 0.6 A
770510 0720 1300 0950 1.0 A WEAK

30

i
1]



THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT ut UT DB
760219 1820 0130*% 2115 2.2 E SERIES OF MEDIUM SIZED FEATURES.L FROM 1820-2030.
760220 0310 0430 0340 2.4 C SINGLE FEATURE.
760220 1000 1110 1045 U.8 A LRREG. ABSN.
760220 1145 1600 1220 2.9 E SHORT L,T.ST.W MF WHICH HAS A-TYPE SYMMETRY OVERALL
760220 2000 2220 2110 2.1 C FEATURE DIFFICULT TO MEASURE (INTERFERENCE).
760220 0600 0910 0745 1.2 A ST.
760221 1045 1610 1050 2.2 E SHARP ONSET 4 MINS LGE FEA ST 2.9DB @ 1140
760221 1750 2350 1920 2.1 E ST.ABSN & ONE MORE QUITE PER(2100-2240).1.8DB@2250.
760222 0150 0225 0205 1.3 A DEEP FOR A-TYPE FEATURE.
760222 0300 0355 0320 0.8 A
760222 1240 1310 1335 0.9 A ST.
760223
760224
760225 1215 1630 1315 0.8 A
760225 1720 1810 1750 0.8 B CUSP.INTERFERENCE.
760226 0920 1020 0940 U.4 A
760226 1150 1700 1435 0.9 A LRREG. ABSN.
760226 1830 2125 2125 1.0 F MINATURE F-EDGE 0.8DB DROP
760226 2125 2250 2200 2.6 C CUSP.
760226 2250 0430* 0110 1.3 E IRREG ABSN FOLL PREVIOUS FEA T
760227 0540 0655 0615 U.5 A
760227 1100 1300 1220 1.3 C SEVERAL PEAKS.END CONFUSED BY INTERFERENCE.
760227 1300 1730 1420 0.7 A IRREG. ABSN. TALL TO PRECEDING EVENT
760227 1900 0100* 2040 3.5 E ST.MORE QUIET BET 212082240,L.1900-2010.SHARP PEAKS
760228 0210 0610 0320 2.3 E SLOWER ONSET THAN FOR D.ST.
760228 0710 1050 0740 3.0 D LGE.D.
760228 1110 1415 1140 0.6 A 2 A FEATURES + T. 0.6DBG@1240.
760228 1845 1100* 2110 3.3 F L 1810-2110 HIGHLY ST D-LIKE T.
760229 1810 2030 1915 0.7 A
760301 1200 1745 1355 2.9 C L 1200-1350 T 1500-1745
760301 1810 2300 1905 3.4 E CUSP.IRREGULAR T.
760302 0310 0510 0345 1.1 A SHAPE RATHER LIKE A SMALL D-TYPE FEATURE.
760302 0545 0640 0551 2.0 F MF SHOWS 2 PEAKS & LASTS #15MINS.T.
760302 U716 U810 0722 1.4 C CUSP.
760302 0940 1100 1010 1.0 B CONFUSED FEATURE. ST.INTERFERENCE.
760302 1200 0035* 1240 3.1 F GAP IN CHART 1400-2336.
760303 0035 U245 0125 2.9 E CUSP.
760303 U300 0530 0505 1.5 C PERIOD OF 1RREG ABSN,GRADUALLY INC IN INTENSITY.
760303 0530 1140 0855 2.7 E PER OF IRREG ABSN,OF GREATER INT BUT FORM NO CL FEA
760303 1230 1400 1305 1.7 A RATHER DEEP FOR CLASSIC A-TYPE FEATURE.
760303 1410 1615 1430 0.9 A TWO SMALL A-TYPE DIPS & TAILS. U.8DB@ 1510.
760303 1800 1840 1810 1.9 C CUSP.ST.
760303 1900 2250 2120 1.4 E PER UF IRREG ABSN POSS EXTENDED L TO FOLL FEA
760303 2250 0350* 23(3 3.2 E LGE,ILL-FORMED FEA.FAIRLY RAPID ONSET.1RREGULAR.
760304 1050 1600 1250 1.1 A LGE A-TYPE FEA W ST.,&SMALLER A-TYPE D1P SUP AT END
760305 0310 0410 0330 0.8 A
760305 1040 1440 1230 1.2 A SOMEWHAT 1RREG.INTERFERENCE.ST.
760305 1545 1640 1615 1.6 C
760305 2030 2330 2200 3.2 F EDGE AT 2200,PREC BY IRREG.L.
760306 0200 0315 0240 1.0 A
760306 0445 0915 0655 1.4 E PERLOD OF IRREG ABSN.1.3DB@U510.
760306 0950 1400 1015 1.5 D RATHER SLOW ONSET TO BE TYPICAL D-TYPE.
760306 1445 1540 1510 0.6 A
760306 1710 1850 1735 4.9 F V DEEP FEA SL ST BEFORE ONSET AT 1735 FAST RECOVERY
760306 1850 2030 1915 6.1 F V DEEP FEA.SL DIST BEFORE ONSET AT 1915.1.

12

§
|



UAG SERIES OF REPORTS

Fewer than four UAG Reports are published at irregular intervals each year. Copies of these publications
may be purchased through World Data Center A for Solar-Terrestrial Physics, Environmental Data and Information
Service, NOAA, D63, 325 Broadway, Boulder, Colorado 80303, USA. A $4.00 handling charge per order will be added to
the single-copy prices listed below. Please note, too, that some reports are available on microfiche only. Orders
must include check or money order payable in U.S. currency to the Department of Commerce, NOAA/NGDC.

UAG-1  "IQSY Night Airglow Data," by L.L. Smith, F.E. Roach, and J.M. McKennan, ESSA Aeronomy Laboratory,
Boulder, CO, July 1968, 305 pp, $1.75.

UAG-2 "A Reevaluation of Solar Flares, 1964-1966," by Helen W. Dodson and E. Ruth Hedeman,
McMath-Hulbert Observatory, University of Michigan, Pontiac, MI, August 1968, 28 pp, $0.30.

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, University of Colorado, Boulder, CO,
October 1968, 35 pp, $0.55.

UAG-4 “Abbreviated Calendar Record 1966-1967," by J. Virginia Lincoln, Hope I. Leighton and Dorothy kK.
Kropp, ESSA now NOAA, Aeronomy and Space Data Center, Boulder, CO, January 1969, 170 pp, $1.25.

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 now NOAA, Boulder, CO, February
1969, 120 pp, $0.65.

UAG-6 “International Geophysical Calendars 1957-1969," by A.H. Shapley and J. Virginia Lincoln, ESSA
Research Laboratories, now NOAA, Boulder, CO, March 1969, 25 pp, $0.30.

UAG-7 “Observations of the Solar Electron Corona: February 1964 - January 1968," by Richard T. Hansen,
High Altitude Observatory, NCAR, Boulder, CO, and Kamuela, HI, October 1969, 12 pp, $0.15.

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 now NOAA, Boulder, CO,
March 1970, 312 pp, $1.75 (includes Parts 1 and 2).

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 now NOAA, Boulder, CO, April 1970,
109 pp, $0.55.

UAG-10 "Atlas of ionograms," edited by A.H. Shapley, ESSA Research Laboratories now NOAA, Boulder, CO,
May 1970, 243 pp, $1.50.

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, ESSA now NOAA, Boulder, CO, April 1971, 466 pp, $3.00 (includes Parts 1-3).

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, ESSA now NOAA, Boulder, CO, May 1971, 76 pp, $0.90.

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, Pontiac,
MI, duly 1971, 25 pp, $0.30.

UAG-16 "Temporal Development of the Geophysical Distribution of Auroral Absorption for 30 Substorm Events
in each of IQSY (1964-65) and IASY (1960)," by F.T. Berkey, University of Alaska, Fairbanks, AK;
V.M. Driatskiy, Arctic and Antarctic Research Institute, Leningrad, USSR; K. Henriksen, Auroral
Observatory, Tromson, Norway; D.H. Jelly, Communications Research Center, Ottawa, Canada; T.I.
Shchuka, Arctic and Antarctic Research Institute, Leningrad, USSR; A. Theander, Kiruna Geophysical
Observatory, Kiruna, Sweden; and J. Yliniemi, University of Oulu, Oulu, Finland, September 1971,
131 pp, $0.70 (microfiche only).

UAG-17  “Ionospheric Drift Velocity Measurements at Jicamarca, Peru (July 1967 - March 1970)," by Ben B.
Balsley, NOAA Aeronomy Laboratory, Boulder, CO, and Ronald F. Woodman, Jicamarca Radar
Observatory, Instituto Geofisico del Peru, Lima, Peru, October 1971, 45 pp, $0.55 (microfiche
only).

UAG-18 "A Study of Polar Cap and Auroral Zone Magnetic Variations," by K. Kawasaki and $.-I. Akasofu,
University of Alaska, Fairbanks, AK, June 1972, 21 pp, $0.20.

I

|
|
|
|
|
|
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THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB
761219 2027 2158 2032 4.0 G ST FOLLOWS SPIKE.
781219 2304 0718* 0210 4.4 E 3. DB @ 0530. 3 MAIN FEAS.
781220 0720 1316 1008 3.8 E MUCH I AFTER O940UT.
781220 1528 1644 1537 2.7 G SOME ST FOLLOWS.
781220 1935 2228 2035 2.9 F L(1935-2032).
781221 0048 1146 0446 2.4 E LRREG ABSN.
781221 1210 1635 1258 1.7 E SOME 1.
781222 0231 0600 0310 2.9 E 3 FEAS OF DECREASING ABSN.
781223 2114 2210 2148 0.6 B
781223 0106 0237 0134 0.4 B LITTLE ST.
781223 0726 1014 0815 1.0 E 1 GRAD FEA.
781224
781225 0144 0407 0222 0.8 A VERY SL ST.
781225 2024 2110 2055 0.4 B LITTLE ST.
781226 0135 0222 0151 0.4 A SHORT DURATION.
781226 1948 2029 1955 0.4 B
781226 2336 1012* 0444 2.6 E PROLONGED GRAD ST.
781227 1339 1630 1431 1.6 E 1 MAIN DIP WT.
781227 1818 2132 1912 1.0 E
781227 2146 0220* 0137 0.7 A SL ST.
781228 0405 0436 0224 0.5 B
781228 1608 1726 1657 0.7 B FAST DECAY.
781228 1730 2005 1804 1.2 E SL ST.
781228 2103 2222 2110 0.7 B
781228 2242 0003% 2256 0.6 B
781229 1606 1903 1738 1.0 E L&T.
781229 1929 2142 1952 0.8 B I W POSSIBLE FAST ONSET @ 1938UT. T. LONG EVENT.
781229 2233 0127%* 2324 2.2 E 1 MAIN FEA.
781230 0224 0736 0520 3.2 E IRREG ABSN. ENDS IN Il.
781230 1407 1510 1454 0.4 B SL I.
781230 1852 2054 1954 0.7 A I. SL ST.
781230 2236 2316 2241 0.5 B
781230 2357 0059* 0016 0.7 B
781231 0059 0206 0132 1.7 C 2 FEAS.
781231 0232 0353 0321 0.7 B SL ST.
781231 0440 0854 0718 2.0 E LRREG ABSN. ENDS IN lL.
781231 1309 1358 1349 0.7 B I @ START.
781231 1525 1534 1528 0.4 B SL I.
781231 1546 1720 1613 0.5 Al.
781231 1854 1910 1857 0.4 B VERY SMALL FEA.
781231 2154 GO050* 2355 0.6 A 2 GRAD SMOOTH FEAS.
790101 0428 0647 0514 1.1 C SMALL ST.
790101 2241 2322 2254 0.5 A SL ST.
790102 1247 1320 1306 0.7 B 1 @ START.
790102 1622 1751 1734 0.5 B SL I.
790102 1826 1939 1928 06.6 B SL I.
790102 2148 0235* 0056 0.8 E SERIES GF SMALL FEAS; NO ST.
790103 0309 0555 0413 0.8 A SL ST.
790103 2235 2314 2300 0.5 A
790103 2318 O102* 2328 0.7 B
790104 0106 0515 0314 3.0 E
790104 0527 0657 0600 2.3 C
790104 0659 0823 O813 0.9 B
790104 0826 1030 0847 1.6 C ENDS IN I.
790104 1428 1448 1438 0.5 B SL 1.

56

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Illustrations of Event Type



THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB
770204
770205 0730 1300 0940 1.2 E
770206 2040 2120 2040 4.2 F # 761209. SPIKE ONSET.
770207 0000 0300 0100 2.0 E
770207 0430 0700 0515 1.8 C
770207 1930 2215 1950 1.0 A 3 MINOR DIPS
770207 2215 U130* 2215 2.2 F SHORT EVENT
770208 0130 0400 0200 2.1 ¢
770208 0800 1200 0930 2.0 E
770208 1930 14U0* 1930 4.0 F 1
770209 0800 1400 1130 2.4 C1
770209 1900 2200 2000 1.3 B L&T
770209 2300 0100* 0030 2.4 C
770210 1310 1400 1320 1.7 C 2 SHARP FEAS
770210 2140 0140% 2210 2.0 C SHORT L
770211 0340 1300 1120 3.0 E
770211 1330 1500 1410 1.0 B MINOR PEAKS
770211 2150 0030*% 2240 0.7 A 2 MINOR PEAKS & T.
770212
770213 0420 0710 0500 0.8 A LRREG DLP
770213 0800 1200 1000 0.7 A
770214 1320 1515 1410 1.6 C L & 2 PEAKS
770214 1710 0230% 2010 2.3 F SHARP ONSET @ 1950. L (1710-1950). & T. 1.
770215 1910 0600* 2115 3% F SHARP ONSET.
770216 0700 1300 0900 0 A
770217 0500 1800 0000 0 E 1500-1700 1. MINOR DIP.
770218 0415 0515 0440 3 Cc SYM. I.
770219
770220 2240 O000* 2350 0.9 B BROAD PEAK.
770221 1430 1620 1520 0.7 B
770222 1800 0500* 2350 1.3 E L&T
770223 1315 1630 1430 1.3 C BROAD PEAK
770223 1825 0230* 2220 2.0 D L(1815-2215) &MF(2215-0000) &f( 0000-0230).
770224 1315 1600 1350 1.8 C ST & T
770224 1800 2030 1350 1.8 F L, ST FEA W SPIKE & T.
770225 1900 2200 2100 4.5 C
770225 2200 0200% 2305 1.1 A 2 MINOR PEAKS & T.
770226 0500 0800 0530 0.7 A
770227 2350 0100* 0015 1.1 ¢
770228
770301 1600 1700 1630 0.7 B
770301 1930 2300 2100 2.1 C MF (2040-2110)
770302
770303
770304
770305
770306 1430 1600 1440 0.8 B
770307
770308 1620 OO010* 2123 0.4 A L TO MAJOK STORM
770309 0010 U640 0240 1.3 E IRREG ABSN
770309 0640 1200 0700 3.4 D
770309 1200 1400 1305 3.0 C ST. SHARP PEAKS.
770309 1400 2130 1630 0.5 A WEAK ABSN
770309 2140 2240 2150 4.9 E ST.
770309 2240 0U40* 2355 1.0 B IRREG

27

i
|
|
|
|

|



THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB
790513
790514 1449 1539 1513 0.4 A
790514 1858 2030 1945 0.8 B END UNCERTAIN.
790515 1948 2158 2036 0.7 A ST.
790516
790517
790518 1812 2056 1836 0.8 B PROLONGED EVENT.
790518 2107 2144 2111 0.5 B
790518 2325 0040* 2331 0.9 B
790519 0042 0312 0218 2.4 E SHARP PEAKS.
790519 0321 U413 0334 0.6 B
790519 0517 0615 0556 1.1 B
790519 1038 1116 1056 0.7 B
790519 1121 1213 1151 0.5 B
790519 1852 2034 1950 0.6 B
790519 2108 2226 2140 1.4 C
790519 2230 2328 2312 0.8 B
790519 2336 0302* 0033 1.9 E (1.8DB@0222).
790520 0305 0336 0315 1.0 B QUITE FAST ONSET.
790520 0336 0414 0343 0.7 B
790520 0541 0834 0620 1.4 E (1.4DB@0710). 1 @ SHARP PEAKS.
790520 1255 1415 1321 0.5 A
790520 1726 1852 1829 0.5 A
790520 1852 2020 1929 0.9 B
790520 2145 2204 2153 0.7 B L&T.
790521 1830 2028 1835 1.1 C 2 SHARP PEAKS@ 1911 &1912.
790522 1636 1822 1800 0.8 B L TO NEXT EVENT.
790522 1839 2003 1841 2.1 F MUCH I.
790522 2016 2052 2030 0.6 Al.
790522 2126 2347 2159 2.5 C SMALL FAST ONSET & ST.
790523 0020 0344 0100 1.9 E
790523 0443 0714 0543 1.3 E l.
790523 1937 2156 2035 2.0 C SIGNAL LEVEL UNSURE.
790523 2156 0002* 2303 2.3 E I.
790524 0002 0027 0014 2.7 C SYM. FEA.
790524 0041 0137 O118 1.7 C SMOOTH FEA.
790524 0137 0227 0200 1.6 Cl.
790524 0227 0300 0243 1.3 Cl.
790524 0300 0525 0348 1.8 C 1 MAIN FEA.
790524 0717 1017 0852 1.5 E MUCH I.
790524 1050 1124 1110 0.5 A SLIGHT ST.
790524 1658 2008 1947 1.2 E END LOST IN I; LITTLE ST.
790525 0010 0135 0110 1.9 CL.
790525 0241 0304 0252 0.7 A
790525 0317 0552 0417 4.1 F 1. PULSATLONS IN L.
790525 1647 1822 1718 1.3 CL & T.
790525 1854 2241 2015 2.2 E IRREG ABSN.
790525 2258 0226* 0128 2.6 E 4 PEAKS.
790526 0313 1043 0653 3.3 E (2.0DB@0423).PULNS IN EVENT.
790526 1828 1949 1859 2.0 C SYM EVENT.
790526 2002 2142 2015 2.1 F SHORT EVENT.
790527 0046 0154 130 0.7 B
790527 0200 0311 0226 1.1 B SLIGHT 1.
790527 0317 0443 0418 1.8 C l.
790527 0454 0708 0513 1.6 E

63



THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB
790709
790710
790711
790712 1749 1812 1757 0.6 A
790713 0149 0337 0202 0.6 A SL ST.
790713 2020 2040 2032 0.4 A
790713 2134 2239 2150 0.5 A
790714 2334 0054* 2337 1.9 F
790715 0139 0232 0200 1.1 C SL ST.
790715 0242 0354 0336 1.5 C
790715 1958 2046 2023 1.2 C ASYM. CUSP.
790715 2216 0046* 2254 1.6 E
790716 0050 0342 0303 0.9 A SL ST.
790716 2020 2044 2027 0.8 B
790716 2054 2112 2103 0.7 B
790716 2250 U112* 0004 1.8 C SL 1.
790717 0250 0558 0428 1.3 E CF A.
790717 1118 1309 1209 1.4 E CF A. 1 @ START.
790717 2101 2209 2151 1.8 C 2 PEAKS.
790717 2244 2312 2255 2.6 C Le
790718 VOU 0048 U009 0.9 B
790718 0103 0244 0120 1.0 C
790718 2035 2146 2116 2.3 F ENDS IN I. 2 STEP ONSET.
790718 2343 U150* 0011 2.1 C I.
790719 0347 0502 0434 1.1 C FAST DECAY. I @ START & END.
790719 2126 2253 2143 1.8 C 1 @ START & END.
790720 0451 0645 0559 0.5 A
790720 1116 1252 1200 1.7 C L. QUITE FAST ONSET.
790720 1324 1419 1340 0.6 B
790720 1931 2124 2008 1.2 C CUSP.
790721 2124 2158 2140 0.9 B CUSP.
790722
790723 0528 0734 0608 0.9 A ST.
790724 0002 0114 0037 0.7 B I @ START & END.
790725 0228 0334 0240 0.8 B 2 PEAKS.
790726 1814 1857 1843 0.4 A 2 SMALL CUSPS.
790726 1905 1920 1913 0.4 B
790726 2030 2059 2048 0.6 B
790727 1940 2014 1958 0.4 B L @ START & END.
790728 0126 0312 0259 1.2 C
790729 1430 1456 1440 0.4 A SMALL FEA.
790730
790731
790801 1113 OO16* L115 1.2 F
790802 0600 0618 C617 O.7 B }30LATED FEA.
790802 0827 1102 0937 2.9 D CLASSIC EVENT, BUT > IHR.
790803 U318 U5U9 0419 1.7 €
790803 0814 0127* 1302 2.1 E LITTLE ST.
790804 0434 0656 0543 1.4 C T.
790804 1830 1918 1838 1.0 B SMALL T.
790804 1937 2004 1944 1.3 C QUITE FAST ONSET.
790804 2035 2044 2039 1.0 B I.
790805 1903 1953 1917 0.9 B SMALL FEA.
790805 2353 0112* 0017 0.8 B MANY SMALL FEAS.
790806 0751 0921 O802 1.6 CL & T.

65



THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB
790806 0922 0946 0937 1.8 C SHORT FEA,
790806 1042 1238 1117 2.1 E SL. ST.
790807 2020 2107) 2043 1.5 F
790807 2138 2156 2139 2.2 G T OF 15 MINS.
790808 0030 0048 0035 0.7 B ASYM FEA.
790808 1832 1919 1844 0.6 A 2 PEAKS; BOTH GRAD.
790808 2352 0054* 0024 0.8 A GRAD FEA.
790809
790810 0534 0737 0657 1.3 C GRAD FEA.
790810 1345 1424 1351 1.1 B
790810 2225 2251 2229 0.6 B 2 SMALL FEAS.
790811 2005 2109 2036 0.8 B
790811 2151 2218 2205 0.9 BI & T.
790812 1917 2001 1931 1.4 C .
790812 2220 2317 2303 1.1 C SHORT FEA.
790813 1145 1232 1210 1.0 B GRAD FEA.
790813 2149 2210 2206 1.4 C SHORT FEA.
790813 2329 2356 2337 0.9 B DOUBLE FEA.
790814 0026 0100 0026 0.9 B 2 GRAD FEAS.
790815 2115 2200 2120 0.6 B SMALL D SHAPE.
790816
790817 0133 0230 0149 1.2 C T.
790818 1345 1514 1414 2.7 Cl.
790818 1947 1956 1949 0.5 B
790818 2250 0240* 2321 2.2 E 12 SHARP PEAKS &l.
790819 0337 0515 0437 1.5 C LARGE A.
790819 0724 0728 0726 0.7 B
790820 0916 0942 0917 2.5 DI INT.
790821 0042 0116 0047 1.7 F GRAD ST IN T.
790821 0353 0436 0413 3.8 C 3 FEAS.
790822 OOUO 0129 O122 0.8 B ASYM. FEA.
790822 0453 0728 0505 1.5 F
790822 1826 1834 1830 0.6 B SYM FEA.
790823
790824 1738 1864 1751 0.9 B SYM FEA.
790825 1136 1322 1155 1.4 E
790826 0030 0100 0054 1.2 C L TO PO. WEAK ABSN.
790826 0110 0420 0354 1.7 E NO MAIN FEA.
790826 0859 0917 0910 0.9 B
790826 1731 1745 1734 0.5 B
790827 0318 0506 0338 1.7 D 2 SMALL FEAS.
790828 0054 0136 O110 1.8 D
790828 2310 2330 2316 1.1 B TIMES ARE APPROX.
790829 0011 0048 0029 1.1 B TIMES ARE APPROX. L&T.
790829 0204 0619 0517 2.7 E LONG L. TIMES ARE APPROX.
790829 0838 1100 1008 0.9 B
790829 1639 1800 1649 4.3 F MUCH ST.
790829 1953 2006 1905 1.5 C SHORT FEA.
790829 2246 2255 2253 1.2 C SHORT FEA.
790830 0026 0124 0114 1.0 C ST.
790830 0310 0548 0430 2.4 E SMALL L.
790831 2130 2200 2142 0.5 B
790901 1820 2024 2011 1.3 C LONG L.
790902
790903 O111 0207 0142 1.3 D NO ST.

66

i]
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THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS

UT UT UT DB
761017 2150 0040* 0000 3.8 C L, MF(2150-2250).
761018 0040 0600 0226 4.3 C L, MF(0125-0336), T.
761018 0600 1140 0845 2.3 E
761018 1140 1520 1251 5.0 C L, MF(1230-1350). T.
761018 1950 2100 2013 1.6 C L, MF (ROUNDED PEAK 2000-2020), T.
761019 1750 2230 1811 0.6 A
761020 0000 0340 0211 1.2 A L, MF(0150-0220), T.
761020 2110 0320 2147 0.5 A MF (2110-2300), LONG T.
761021 0420 0820 0600 0.8 A
761021 1300 0400* 0015 1.5 C L, MF(2320-0110), T.
761022 0800 1100 0847 1.2 A
761022 1130 1420 1211 0.8 A
761022 2300 0730* 0345 0.8 A
761023 1000 1400 1125 1.0 A
761023 1510 1600 1536 0.6 B
761023 1750 1900 1841 0.6 A LRREG A DIP.
761024 1920 2000 1942 0.5 4
761025 0030 0320 0100 0.6 A
761026
761027 1850 2210 2119 2.2 F L, MF(2116-2210).
761027 2300 0200* 0030 1.3 C L, MF(2355-0055), T.
761029
761030 1310 1440 1400 1.8 C
761030 1440 2200 1922 1.2 C BROAD PEAK.
761030 2210 0000* 2229 3.8 D
761031 0000 0400 0006 1.8 C MF(0000-0050). T.
761031 0520 0950 0649 4.2 EL, MF(0630-0950).
761031 1000 1310 1026 1.2 C IRREG
761031 1310 1955 1934 1.0 E
761031 1955 2040 1956 1.6 F
761031 2040 2220 2213 4.6 F L, MF(2111-2220).
761031 2220 0450* 0030 1.5 A
761101
761102 0750 1200 0900 0.6 A SOME SMALL SCALE ST.
761102 1410 1530 1446 0.5 A
761102 1715 2000 1746 0.8 A IRREG.
761102 2157 0130* 0024 0.5 A WEAK.
761103 0830 1400 1145 0.9 A WEAK.
761103 2000 2300 2140 4.0 F LRREG L MF(2135-2330).
761104
761105
761106
761107
761108 2300 0200* 0017 0.6 A
761109
761110 0550 0830 0615 0.6 A
761110 1250 1500 1330 1.7 CL, MF (1315-1355), T.
761110 1700 2020 1955 1.8 F L, MF (1950-2020), L TO NEXT FEA.
761110 2020 0200* 2032 3.4 F DEGRADED EDGE FOLL BY IRREG FEA. T(2430-26U0)-
761111 0200 0540 0406 3.7 EL, MF (BROAD ST ). T.
761111 0500 0830 0624 0.6 A
761111 0830 1015 0945 1.8 C
761111 1015 1430 1020 1.8 E SMOOTH FEA.
761111 1530 1200* 1750 6.0 G SPIKE DISTURBED PERIOD.
761111 2030 2130 2045 1.9 D DOUBLE FEA.

24



CATALOG OF AURORAL RADIO ABSORPTION
During 1976-1979 at Abisko, Sweden

by

J.K. Hargreaves, C.M. Taylor and J.M. Penman
Environmental Sciences Department
University of Lancaster
Bailrigg, Lancaster, England

Introduction

This catalog lists concisely radio absorption events recorded by the wide-beam 30-MHz riometer at
Abisko, Sweden, during the International Magnetospheric Study (IMS) of 1976-1979. The station has
geographic coordinates N68.36° and E18.8° and an L value of 5.64 (invariant latitude 65.1°); magnetic
midnight occurs there about 2200 UT.

The detector is a standard La Jolla Sciences riometer with additional output smoothing to increase
the response time to a few seconds. The antenna comprises two wire dipoles over reflector wires, pro-
ducing a beam pointed to the zenith and having an approximately circular response pattern in which the
gain decreases 3 dB at zenith angle 32° [Ecklund and Hargreaves, 1968]. Quoted absorption values remain
uncorrected for antenna beam width; they should be reduced about 30% to obtain the absorption that a pen-
cil beam antenna pointed to the zenith would measure.

The catalog should be useful in three ways: (1) to indicate the level of auroral absorption
activity in Scandinavia at particular times or on particular days; (2) to study statistically the inci-
dence and intensity of radio absorption events; and (3) to aid in the selection of events of a particular
type for detailed study.

Form of Catalog

Numerical data give the year, month and day; the Universal Time of event start, end, and maximum;
and the absorption at maximum in decibels. Absorption values are accurate to either 0.1 or 0.2 dB. For
events of 1 dB and greater, we regard the list as complete. Between 1 and 0.4 dB we may have missed
some events, because a weak event of long duration may not be obvious on a chart. No attempt was made to
record events smaller than 0.4 dB.

The time of maximum is accurate to 5 min, and start and end times should be within 10 min as a rule,
though there could be greater uncertainty for events with either a very gradual onset or decay. An
asterisk following the end time means that the event extended over midnight and ended during the next UT
day.

The numerical data are followed by a letter type, indicating the shape of the event, and by com-
ments. Figures 1-5 on pages 4-8 give examples of the event types.

Event Type (Based on Event Shape)

A: A gradual, and often symmetrical, depression of the riometer trace as illustrated in Figure 1;
often featureless but sometimes showing structure (noted in catalog if present). Maximum
absorption usually less than 1.5 dB. Duration usually greater than 1 hr.

B: Amore structured event than type A, but still relatively weak, with absorption usually less
than 1 dB and duration less than 1.5 hr. See Figure 1.

C: A structured event larger than type B with no limit on the maximum absorption, though the dura-
tion generally does not exceed 2 hr. The structures can be of various shapes as shown in
Figure 2. In an asymmetrical event the onset is usually sharper than the recovery.

D: An event with essentially the shape illustrated in Figure 3; the archetype rises in 20 min and
decays over several hours, though shorter examples are included if similarly proportioned.
Structure may be superposed.

E: An extended and structured event like type C except that the duration exceeds 2 hr. May be
very irregular in shape. Compare Figures 2 and 4.

F: A fast-onset event as illustrated in Figure 5, that either starts with a sharp leading edge or
contains one. Often highly structured.

G: A spike event with sharp onset and sharp recovery as shown in Figure 5.
P: A polar cap absorption event. Not illustrated.
Blank: No events noted on that day~-a condition caused in a few cases by equipment failure, gaps be-

tween charts or interference. Whenever we are certain a no-event day was caused by one of these
three conditions, we note it in the catalog under the COMMENTS column heading.

a a




THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB

I
760306 2100 2310 2220 5.8 C STRUCTURAL ABSN.3.7DBG@2200;3.4DB@2245. |
760307 0030 1445 0355 2.2 E ABSN WEAK BETWEEN 080081030. 2.UDB@0130;1.8DB@0750. 1
760307 1500 1550 1530 0.6 A TWO SMALL FEATURES.
760307 1650 1730 1700 0.8 B CUSP.
760307 1800 2305 2100 3.4 C IRREG L.LEVEL #1.0DB.UNTIL 2100.SHARPISH EDGE,DEC.
760307 1930 2300* 2255 2.9 E A-TYPE L(1930-2215),FOLL BY C-TYPE FEA.U.9DB@2050.1
760307 2305 1430* 0815 7.8 E V LRREG FEAS 0110 4.8DB 0220 4.8DB 0355 5.6DB |
760308 t
760309 0220 0645 0305 4.9 C INTERFERENCE 0400-#0700. |
760309 0645 1010 0715 3.0 D FEATURE MUCH DISTURBED BY INTERFERENCE.ST. |
t
760309 1010 1350 1120 2.2 C ST.,T.1.5DB@ 1020. 1
760309 2100 U110* 2230 4.9 E LRREG,STRUCTURAL ABSN,PROBABLY DISTORTED BY I. |
760310 OL10 1206 0440 2.2 E CHART ENDS,1206. 1.SUSPECT IRREG ABSN .
760310 1200 1400 1255 0.8 AT
760310 1710 2040 1920 2.0 © L,1705-1845,FOLL BY FEA IN A TYPE SYM BUT MUCH ST

ar OPE emer en ata

760310 2040 2315 2240 8.1 F V SHARP EDGE AT 2215 L
760310 2315 O0510* 0220 3.0 E LGE,IRREG.FEATURES.
760311 0600 1100 0655 1.7 E CONSIDERABLE ST.,BUT A-LIKE SYMMETRY OVERALL.
760311 1125 1510 1150 3.0 C LGE C FEA W ST FOLL BY 2 SHARPER PEAKS SHORT T
760311 1950 0030* 2330 1.9 A IRREG.L(1950-2210),WITH 1 SHARP PEAK,MF,ATYPE SYM.
760312 0030 0355 O110 3.9 C MF(0030-0200),FOLL BY T. IRREG,WEAK ABSN.
760312 0400 O80U0 0500 3.5 C ONSET RATHER SLOW FOR D.CONSLDERABLE ST.
760312 0905 1400 0945 2.9 E LGE,IRREG.FEATURE.MUCH ST. 2.8DB@1230;2.7DB@L100.
760312 2110 0000* 2210 3.0 C SYMMETRICAL DIP.SOME ST.T.
760313 0040 0330 0140 4.2 E CUSP.
760313 0640 1400 0920 1.1 E EXTENDED PER OF LRREG ABSN
760313 1455 1550 1505 1.2 B MINI LNCLINE D-TYPE
760313 1510 1655 1600 0.5 A
760313 1945 2130 2020 3.5 F IRREG L,1945-2020.
760313 2330 0540* 0255 2.5 E ST.
760314 0540 0830 6605 3.7 D ST.
760314 0945 1440 1100 0.8 A 0.7DB@ 1335.
760314 1545 1655 1630 0.6 A
760315 0320 0650 0410 1.0 C IRREG ABSN. 0.9DB@ 0500.
760315 0650 U810 0730 1.2 A
i]
760315 U8LO 1020 0845 2.2 C |
760315 1350 1615 1405 7.4 C SERIES OF REMARKABLE PEAKS, ‘V’SHAPED. 2.9DB@1450. '
760316 2200 0030% 2250 0.8 B TWO SMALL FEATURES. '
760316 0315 0630 0400 0.8 A |
760316 0740 1200 0805 1.6 E RATHER SMALL,&SLOW ONSET FOR CLASSIC D. f
760316 1815 2005 1920 1.2 A ST. |
760316 2250 023U* 0045 1.6 E L(2250-2350) ,MF(CUSP),T.(U115-0230). t
760317 0250 0620 0345 1.9 E RECOVERY HAS SOME BROAD STRUCTURE. |
760317 0620 1000 0810 5.0 E VERY LARGE # SYMMETRICAL DIP. I
760317 1000 1510 1045 3.7 E MUCH ST.1T.(1410-1510) a
if
760317 2145 0030* 2245 3.5 C CUSP.SHORT L,GRADUAL DECLINE. i
760318 0030 0300 O110 1.3 C L,T.SINGLE BROAD FEATURE. ‘
760318 0745 U845 0815 0.4 A if
760318 0940 1720 1110 1.3 A MF(0940-1505),T-(1505-1720).LGE.FEA,W.ST. I
760318 2055 2320 2230 0.8 A SOME ST. I

760319 0455 1130 1005
760319 1200 1450 1330

1.7 LGE,IRREG.FEA W LONG L(0455-U830).

1.0
760319 1550 1620 1555 0.6

1.0

5

V.SMALL.
760319 1815 1855 1645
760319 1930 2110 2010 0

bee >a

13


Periods of No Data (Whole Days). The following year-month-day intervals identify dates when no data were
obtained throughout whole days: 780404-780409; 780522-780531; 780914-780917; 781015-781023; 781207-
781208 and 790531-790621. Mainly equipment failures caused these gaps.

Periods of No Data (Partial Days). Propagated interference most commonly caused data loss during part of
a day. Table 2 summarizes our estimates of this loss at Abisko during the IMS period and should be
taken into account in any statistical study. The records deteriorated with increasing solar activity

In general the loss of data was more serious by day and in winter.

Table 2. Estimated Percentage of Data Lost by Interference

3-Month 00-03 03-06 06-09 09-12 12-15 15-18 18.

1 21-24
Period (UT) (UT) (UT), (UT) = (UT) (UT) (UT) ~— (UT)
Jan-Mar 1976 0 0 1.8 1.8 0 9.3 1.8 0
Apr-Jun 1976 0 2.6 0 0 0 0 10.3 7.7
Jul-Sep 1976 0 0 0 2.6 0 0 3.8 3.8
Oct-Dec 1976 0 0 0 0 7.7 7.7 5.2 7.7
Jan-Mar 1977 0 0 0 0 12.1 9.1 91 9.1
Apr-dun 1977 0 0 1.7 10.0 5.0 3.3 3.3 3.3
Jul-Sep 1977 0 0 0 0 0 0 10.0 16.7
Oct-Dec 1977 0 0 0 0 20.0 70.0 60.0 36.6
Jan-Mar 1978 0 0 12.1 48.5 51.6 12.1 0 0
Apr-Jun 1978 16.6 54.2 50.0 45.8 25.0 16.7 0 8.3
Jul-Sep 1978 27.2 9.1 15.2 9.1 0 6.1 6.1 27.2
Oct-Dec 1978 0 0 22.2 70.4 70.3 22.2 3.7 0
Jan-Mar 1979 0 0 70.0 93.3 90.0 56.7 10.0 13.3
Apr-Jun 1979 20.8 62.5 79.2 72.9 52.1 29.2 4.2 12.5
Jul-Sep 1979 20.0 26.7 23.3 26.7 20.0 6.7 10.0 26.7
Oct-Dec 1979 0 5.0 56.7 90.0 75.0 43.3 10.0 5.0

Acknowledgments

We appreciated the careful operation of the riometer by Mr. N.A. Andersson and staff of the Abisko
Scientific Research Station, Royal Swedish Academy of Sciences. Mr. P.N. Collis and Mrs. G.M. Park
assisted in compiling the catalog. This task formed part of a project to study high-latitude radio
absorption--a project supported by the U.K. Science and Engineering Research Council.

References

ECKLUND, W.L. and 1968 "Some Measurements of Auroral Absorption
J.K. HARGREAVES Structure over Distances of about 300 km and
of Absorption Correlation Between Conjugate

STAUNING, P. a Narssarssuaq Riometer Data Dec 75-Jun 76;
Jan-Dec 77 (IonTab Reports 45, 46 and 189,
Ionosphere Laboratory, Danish Meteorological
Institute, Lyngby, Denmark).

STAUNING, P. b Polar Riometer Absorption Data Jul-Dec 76;
Sep, Nov 77 (Ionlab Reports 49 and 76,
Ionosphere Laboratory, Danish Meteorological
Institute, Lyngby, Denmark).

STAUNING, P. c Riometer Absorption Data Oct 77-Dec 79 (Ionlab
Reports 47, 48, 50, 52, 55-58 and 64,
Ionosphere Laboratory, Danish Meteorological
Institute, Lyngby, Denmark).



THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB

760701 0750 1100 0900 ST.
760701 1120 1500 1155 2 SINGLE FEAS TOGETHER 1319-1.5DB
760701 2100 2230 2119 cuse.

760701 2350 G220%* 0053

L,MF(0030-0130);T.MF IS LGE.SOMEWHAT IRREG.,SCOOP.
760702 0715 1230 0747

EXTENDED PERIOD OF SLOWLY VARYING ABSN;<1.0DB

760702 1230 1700 1339
760703 0520 0640 0604
760703 0745 1510 1135
760703 1552 1620 1554
760703 2000 2305 2058

BLUNT CUSP.
2 LGE FEAS.DIFF.TO CLASS.SL.VARYING,NO V SHARP PEAK

Oe Me > POAWOD

L,(2000-2040) MF W 2 BROAD PEAKS T 2150-2305

760704 0640 1410 0851
760704 1445 1715 1614

1. L, (0640-0840).

0.
760704 1715 2100 1947 4.

0.

O.

SOME BROAD ST.
L,1715-1845 C,1845-1942,F,1942-2100 T ENDS W I

760705 1445 1620 1507
760705 1940 2230 2205

760706 G100 0300 0144
760706 1500 1850 1535

2. L.,M.F(0120-0220),T.
0.
760707 0210 0410 0245 1.
0.
1.

LARGER FEA.1511-1730,FOLLOWED BY SMALLER 1730-1850.
PULSATIONS.

760707 0445 0545 O511
760707 1050 1510 1153

760707 2220 UO40* 2251
760708 0400 0900 0554

2. L3MF(2245-2305);T.SINGLE PEAK.

2.
760708 1320 1645 1403 2.

2.

2.

MF 1S SYMMETRICAL T
2-PEAKED MF(1320-1600);T.SOME 1.
L1725-1950 MF IS SHARP PEAK T. SOME I

a

760708 1725 2115 1959

760708 2340 0100* 0005 st, L
760709 0300 0430 0338 ST,.1.
760709 0430 0720 0523 ST,.1.

760769 1100 1600 1207
760710 0545 0940 0634
760710 1020 1350 1100

ST.EX.PER.OF SOMEWHAT IRREG.ABSN.SMALL PEAKS.
MF 0545-0650 T
MF1020-1215.

760710 1920 2110 1939
760711 1030 1520 1300
760712 0000 0050 0021

1

0

1

2

0

0 SOMEWHAT IRREGULAR.

0

0
760712 0105 0150 0125 0

0

0

QO

0

0O

2

SMOOTH DEPRESSION OF TRACE.

760712 2100 2130 2118

760713 0800 0940 0840 0. I.CHART ENDS 1217.
760714 0245 0400 0259 QO. IRREG;1.

760714 1510 2240 1713 0. EXTENDED PERIOD OF SMOOTH ABSN.

760715 0150 0430 06255 0.

760715 1700 0300* 1939 2. 3 PEAKS. |
760716 0540 1230 0842 2.1 FEA.W A-TYPE SYMM.& SOME ST. |
760716 1230 0030* 1505 0.6 LONG PO STEADY ABSN F-TYPE EDGE 1909

760717 1730 2015 1848 0.5

760718 0300 2030 1444 1.2 EX.PER.OF STEADY ABSN.,LENGTHY L.TO NEXT FEATURE.

760718 2030 0105* 0022 1.9 1.5DB@ 2208.

700719 1500 1930 1800 0.5 CHART ENDS 1222. (20/07/76)NEW CHART BEGINS 1244.

760720

760721 0000 1120 0344 1.2 EX.PER.OF#STEADY ABSN.10 MIN’EDGE’ @#0330L.T.

760722

> > bP OFPOM HEP P> PPP PAPER COMMA SRA>Q PPaAPM

760723 0310 0450 0400 0.

760723 1600 2000 1659 1. L3;ME.630-1715;T.DEC.OF T-ABSN.LS V.GRADUAL.
760724 2010 2050 2623 0.
760725 0130 0330 0154 Ll.
760725 0955 1110 1025 0.

0.

760725 1330 1950 1624

PPrara

PERIOD W A-TYPE FEATURES.

19


WORLD DATA CENTER A
for
Solar-Terrestrial Physics

Report UAG - 84

CATALOG OF AURORAL RADIO ABSORPTION
During 1976 - 1979 at Abisko, Sweden

July 1982



THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB
780105 0730 1700 0817 3.2 EB MF(0730-1350)
780106 0100 0740 0245 4.0 E ST W SPIKE @ 0622(2.2DB).
780106 0740 1000 0856 1.5 A
780106 1800 2000 1847 1.1 A EDGE @ 1847.
780106 2000 0200* 2218 0.9 A 1 SHARP PEAK @2145.
780107
780108 0040 0300 0139 1.8 C MF(0110-0200).
780109 0150 0330 0237 1.0 A
780109 0800 1630 0850 2.3 E L, MF(0840-1500),T.
780109 1930 2050 1933 1.3 F
780109 2050 0240* 2221 3.1 C L, IRREG SCOOP(2130-2300)
780110 0240 1130 0246 2.6 C SHARP ONSET.
780110 1530 2100 1854 0.6 A SL ST.
780110 2100 O000* 2111 4.9 F GRAD. DEC AFTER 2140.
780111
780112 2030 2230 2128 0.3 BL, MF(2120-2140),T.
780113 0746 1420 0900 0.9 A
780113 2000 0000* 2216 1.0 A
780114
780115
780116 1400 1800 1414 1.0 B MF(1400-1500), WEAK,IRREG T.
780116 2200 0700* 2326 1.9 C
780118 0010 0500 0329 1.3 E TINY EDGE @ 0010,MF(0220-0450), T.
780118 1300 1900 1600 0.6 A
780119 0100 0530 0128 0.5 A MF(0100-0200),T.
780119 1100 1420 1124 0.6 A MF(1100-1240),T.
780119 1510 1710 1605 0.4 A
780120
780121
780122
780123
780124
780125
780126
780127
780128 1900 0450* 2216 0.8 A W ST. SMALL E-TYPE.
780129 0450 1200 0609 2.6 E 2 LARGE FEAS.
780130 0515 0900 0737 3.0 E MUCH ST.
780130 2131 2140 2136 2.2 C IRREG ABSN. FAST ONSET.
780130 2340 0050* 0025 4.0 C IRREG FEA W I.
780131 0643 1100 0721 2.5 E LRREG.
780131 1945 2015 1947 1.6 F I.
780131 2320 0320* 0033 1.6 C IRREG DIP. T(2540-2720).
780201 0700 1200 0839 1.2 A
780201 2150 0240* 2323 3.2 C SHARP PEAKS
780202 0240 0930 0458 0.9 C BROAD ST.
780202 1140 1430 1306 1.2 A
780202 2000 0300* 0058 2.1 F PO IRREG ABSN
780203 0300 0820 0513 0.8 A NOISY SIGNAL
780203 1220 1520 1257 1.9 C
780203 1715 0500* 1843 3.1 F ONE SHARP PEAK.IL.
780204 0510 0720 0534 1.0 A MF(0510-0600). I.
780205 0120 1030 0222 1.5 C L, MF(0510-0600).1.
780205 1900 0200* 1922 1.7 F SHARP ST @ START
780206 1130 0430* 2154 0.7 E WEAK ABSN, SMOOTH SIGNAL.

42

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THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB
781125 1206 1225 1214 0.9 B SHARP CUSP.
781125 1503 1620 1516 3.6 F TYPICAL EVENT,(USED AS ILLUSTRATILON).SOME IL.
781125 1658 1709 1717 0.5 B 2 SMALL DIPS.
781125 1919 2007 1932 0.5 B
781125 2016 2041 2024 0.5 B
781125 2219 2338 2235 1.5 C SMOOTH T.
781126 0144 0228 0155 0.5 B
781126 0232 0454 0403 0.7 E MLNOR ABSNS.
781126 0456 1412 0601 5.4 E MANY PEAKS OF VARYING ABSNS. FAST ONSET @ 0556.
781126 1519 1533 1523 0-5 F LI.
781126 1903 2126 1908 2.9 F I.
781126 2144 1032* 2147 1.6 E VERY GRAD SL ABSN & SOME ST.
781127 2044 2252 2143 1.5 C
781128
781129
781130 2139 2152 2146 0.6 B
781130 2241 2348 2314 0.4 B GRAD FEA.
781201 0056 0248 0137 0.8 A FAST DECAY SL ST.
761201 0310 0723 0433 0.6 E SL FLUCTUATIONS IN ABSN.
781202 2304 2348 2311 0.4 B SL ST.(SMALL A EVENT).
781202 2349 0034* 0026 0.4 B SL ST.
781203 0437 0529 0516 0.4 B SL ST.
781203 0600 0652 0631 0.4 B SL ST.
781204 1936 2116 1958 1.3 C ST.
781204 2124 2240 2159 0.5 B
781204 2244 0822* 0247 2.6 E MF(0218-0340).
781205
781206
781207
781208 NO DATA
761209 NO DATA
781210 NO DATA
781211 NO DATA
781212 NO DATA
781213 2309 2347 2321 0.4 B SMOOTH FEA.
781214 0127 0310 0200 0.5 A
781215 0254 0414 0410 1.3 C 2 MAIN PEAKS.
781215 0418 0748 0510 3.2 E GRAD DECAY.
781215 0759 1105 0844 2.7 E MUCH I.
761215 1850 1934 1900 0.9 B SL lL.
781215 2129 2236 2139 1.0 C
781215 2250 2320 2259 0.8 C
781216 0038 0213 O112 6.5 A SL ST.
781216 0332 0606 0415 1.4 E LONG DECAY.
761216 1018 1223 1140 1.5 E BAD I @ START.
781216 1250 1622 1330 1 E Ll @ START.
781216 2303 2350 2332 0 BA ST.
781216 2350 0031* 0012 0 B CUSP.
781217 0351 0535 0435 0 B SL LONGER THAN TYPICAL FEA.
781217 2126 2248 2149 0 B
781217 2330 0039* 2351 0-5 A SL ST.
781218 US21 0921 0838 1.7 C POOR FEA DUE TO BAD I.
781218 1654 2300 1730 3.0 F 2 FEAS BUT ABSN NOT ZEROLNG BETWEEN THEM.
761218 2316 1250* 0431 3.7 E PROLONGED SERLES OF ABSNS.
761219 1712 1954 1735 1.5 C D SHAPE W ST.

55

a ee

|
|
|
|
'
|
|
I


THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB
770923 1640 1740 1701 1.8 C L,MF(1650-1740)
770923 1740 2200 1902 2.9 E IRREG.ABSN,ST.W F-TYPE EDGES.L,MF(1820-2120);T.
770923 2200 0230* 2229 2.0 F ST C-TYPE FEA W A-TYPE SYM,&F-EDGES UP AT #2225
770924 0300 1730 0946 3.2 P PCA.
770924 1950 0330* 2321 1.7 C PER OF SL VARYING ABSN,WITH 3 PEAKS.1.5DB@2141.
770925 0330 0930 0803 1.6 A GAP IN RECORD FROM#0930,UNTIL 1127.
770926 0300 1000 0609 2.0 E V SYM.EXTENDED WINGS,BUT DIFFICULT TO DEFINE.L&T.
770926 1000 1730 1132 1.3 A BROAD ST.
770926 1730 1915 1828 1.2 C SCOOP.
770926 1915 2110 1936 1.2 B I. 0.9DBG@2049.
770926 2110 2330 2201 2.2 C DEEP ST.
770926 2230 0110* 0000 1.8 C ST.
770927 0110 0155 O111 1.5 F ST FOLLOWS.
770927 0155 0320 0234 2.7 C ST.
770927 0320 0840 0511 5.0 E ST.
770927 0840 1500 0956 2.2 C MF(0840-1100);T.ST.
770928 0100 1600 1157 1.2 A EXTENDED PER OF SLOWLY VARYING ABSN.
770929
770930 1000 1105 1047 1.0 B ABSN MAY EXTEND SOMEWHAT BEYOND 1105. 0.6DBG@1008.
771001
771002 0050 0140 0107 0.4 A 7Q.D.C.
771002 0610 0710 0637 0.5 A 7Q.D.
771002 1040 1400 1218 1.0 A ST.
771003 0230 0420 0356 0.5 A
771003 0530 0700 0626 0.5 A L.END CONFUSED.
771003 0930 1345 1110 0.6 A L.BEGINNING CONFUSED, MF(0930-1255);T.
771003 1430 1600 1540 0.6 B 3 SMALL PEAKS.
771004 0210 0650 0417 1.7 E BROAD ST.
771004 0650 1200 0758 1.2 A MF(0650-0905);T.
771005
771006 0210 0530 0313 0.7 A
771006 0715 0810 0736 1.3 C MUCH I.SMALL SCOOP.?TIMINGS.
771007
771008 0500 0620 0556 0.5 A ?7£1ART. CHART ENDS 1747(081077)
771009
771010
771011 0200 0430 0311 0.5 A
771011 2045 0015* 2153 1.2 A ST,BROAD & SHARP.
771012 0015 1600 0921 4.0 E CONSIDERABLE ST.
771012 1800 OO0O* 1916 1.2 A A-TYPE FEA W B-TYPE PEAKS SUPERIMPOSED
771013 0500 0830 0620 2.3 E SINGLE FEA W ST.PULSATIONS.1@END.
771013 1040 1200 1120 0.5 A
771013 1900 2340 2024 1.3 E SHARP ST.
771014 1905 2350 2157 4.6 F L(1905-2129),MF W ST.&2EDGES(1929-2153).1.4DB@1939.
771014 2330 0450* 0120 4.4 F L,W ST;MF(0110-0210);T.PULSATIONS. 3.5DB@2517.
771015 0730 1320 1027 2.7 E TWO BROAD PEAKS,ST.2.0DB@ 0854.
771015 1820 2315 2018 1.0 A PER OF SUST ABSN(#0.7DB),W SMALL SHARP ST.SUPERIMP.
771015 2315 0410* 0156 1.5 E PER OF SUSTAINED ABSN WITH ROUNDED ST.
771016 0410 0800 0455 2.5 D MF(0410-0650);5T.
771016 1515 1615 1525 0.5 A
771016 2100 OOOO* 2232 1.7 F L3MF.(2220-2245);T. 1.3DB@2226.
771017 O0VOO 0130 0022 0.8 A MF(0000-0045);T.
771017 0545 1015 0639 1.7 C MF(0545-0800);T W SMALL B-TYPE PEAKS.
771017 1555 U840* 0210 2.7 E ENORMOUS E-TYPE FEA.W MUCH ST.,INCL F-EDGEG@#1940.
771018 0840 1450 1059 4.3 E ST.MF(0840-1340);T.

38

|



THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB
761226 0540 0700 0610 0.6 A
761227 1940 2330 2040 0.9 A
761228
761229 0100 1020 0840 3.5 E MAJOR STORM W ST. L (0100-0130)
761230 2000 0700* 0400 3.7 E STORM FEW BROAD PEAKS. LITTLE ST.
761231
770101 0900 1500 0940 1.6 D IRREG ABSN
770102 0100 0200 0115 1.2 €
770103 2100 2300 2146 0.5 A WEAK
770104
770105 0000 0130 0040 1.7 C
770105 1700 O0OU* 2100 2.7 F L FOLL BY SUDDEN ONSET
770105 0000 0630* 0240 2.3 D
770106 0800 1415 1040 1.0 A
770107 0130 0230 0140 0.9 A
770108
770109
770110
770111 1830 1900 1840 0.8 B SMALL PEAK
770111 2230 0340* 0230 1.0 A BROAD FEA
770112 2200 0300* 0015 1.8 A TRACE LEVEL UNSTEADY
770113 0300 0600 0435 0.5 A STEADY ABSN
770114 O115 0215 0130 1.0 C
770114 1900 0900* 0500 2.7 E T.
770115 0900 1800 1000 1.1 C T(0800-1800).
770116
770117
770118 0015 0300 0050 0.5 A
770119 1830 0700* 2350 2.1 E SERIES OF PEAKS. T.
770120 1130 1530 1130 1.3 E NO IRREG FEAS.
770120 2020 0130* 2300 2.0 E L.
770121
770122 1500 1600 1530 0.6 A
770122 2330 0300% 2350 1.0 A
770123
770124 0130 0300 0240 1.3 €
770125 1350 1550 1405 1.2 C 2 PEAKS & T.
770125 2300 0300* 2315 1.2 E .
770126
770127
770128 2115 2300 2120 5.8 F MAJOR STORM
770128 2300 0030* 2340 1.0 A BROAD PEAK.
770129 0600 1400* 1130 1.8 E
770129 1830 1950 1534 0.5 A MINOR DIP.
770129 2250 OO15* 2300 1.7 C ST.
770130 0100 0400 0310 2.0 E
770130 0600 1400 0830 3.2 E LRREG ST
770131 0015 O115 0015 4.0 F # FEA 761209.
770131 0200 0630 0400 1.7 CL&T
770131 0630 1200 0800 3.6 E 1
770201
770202
770203 2220 U050* 2330 2.5 €
770203 0330 0600 0440 1.3 A DIP
770203 2140 O0100* 2320 2.1 C L&T

|

26



THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB

780207

780208 0140 1300 0217 0.6 A

780208 1600 2210 2048 1.5 F LONG L,MF(1940-2150),T.
780208 2210 0330* 2213 1.3 F MF(2210-0000),T.

780209 2030 2110 2057 1.6 F 2 ONSETS, (204082057). L & T.
780210

780211

780212 1830 0220* 2125 2.0 C L, MF(2120-2330),T.

780213 0220 0530 0241 1.6 D NOISY. PCA.

780213 0930 1620 1349 1.9 E BROAD ST. PCA.

780213 1700 0500* 0141 0.9 E VERY SMOOTH. PCA.

780214 1000 0610* 1443 5.3 E MF(1000-1620).

780215 0610 1700 1107 3.3 E IRREG L, MF(0930-1200),T,1i.
780216 1500 1940 1759 0.9 B SMALL PEAK. SIGNAL LEVEL UNEVEN.
780216 1940 0600* 0218 2.5 C IRREG ABSN,MF(0205-0240).
780217 2100 1430* 0633 2.0 E LONG L,W BROAD ST.MF(0550-0800),T,I1.
780218 1440 1800 1734 1.1 A ROUNDED ST.

780218 2230 2334 2247 0.8 B ONE SMOOTH PEAK.

780219 0100 0600 0439 2.1 E L,MF(0335-0500),T.SERIES OF 4 PEAKS.
780219 1356 1538 1513 1.1 C L TO ONE SYM PEAK.

780220 0704 0813 0801 3.3 C ONE SMALL EDGE @0724,END iN 1.
780221

780222 1705 0100* 2331 3.0 E L&T. ONE MAIN EVENT W SLIGHT ST.
780222 2146 2212 2154 0.5 A

780223

780224

780225 2000 2244 2141 1.5 C L&T.

780226 0052 0504 0128 1.2 E

780226 0505 0805 0532 2.2 E ONE LARGE EVENT.

780226 1906 0035* 2025 4.0 F L. HIGHLY ST EVENT.

780227 0035 0334 O119 3.1 C

780227 0425 0900 0623 4.6 E 2 PEAKS WITH ST.

780227 0926 1210 1046 1.5 E I.

78U227 1823 2138 1945 3.1 E I @ START

780227 2138 0150* 2154 5.8 F ST

780228 0300 0500 0410 3.6 C SMALL ST

780228 0519 1045 0806 2.4 E END OF CHART.

780228 1050 1217 1149 1.7 C IRREG ABSN.

780228 1308 1400 1338 1.6 C 2 SHARP PEAKS.

780228 1740 0014* 1921 3.0 E PROLONGED PO. IRREG ABSN.
780301 0020 0938 0635 1.1 E LOW LEVEL OF ABSN.

780301 0938 1144 0958 2.1 C SERIES OF PEAKS.

780301 1439 1526 1509 1.0 C 2 PEAKS.

780301 1630 1922 1901 3.1 G L TO SPIKE.

780301 1950 2303 2012 4.6 E I @ START,T.

780302 0000 0336 O010 4.0 E QUITE FAST ONSET,T.

780302 0340 1205 0550 4.8 E GRADUAL EVENT W ST.

780302 1320 1503 1357 1.2 C

780302 1907 2056 2016 1.2 C SHALLOW EVENT.

780302 2222 0330* 2225 1.9 F ST IN T.

780303 0506 0902 0610 3.4 E ST.

780303 1848 OOOU* 2007 2.9 E 2 EDGES(2004&2232).

780304

780305

780306

Ol —————— a

43


THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB
761112 0000 0330 0130 2.5 DL. CLASSIC EVENT W ST.
761112 0600 0800 0640 1.8 C IRREG.
761112 1120 1200 1130 1.0 B
761112 2020 1130* 0720 6.0 F MAJOR STORM. SEVERAL P O ACTIVITY.
761113 1730 2330 2115 2.7 F L. SPIKE & FAST ONSET.
761114 0120 0320 0145 2.6 CT.
761114 2220 0210* 2230 1.5 E 2 PEAKS.
761115
761116 1410 1440 1430 1.2 C SMALL PEAK & ST.
761117
761118
761119
761120
761121
761122
761123
761124
761125 0500 1230 0605 1.0 A BROAD ST.
761126 0400 0600 0445 1.0 A I.
761127
761128
761129
761130 0320 0600 0510 0.6 A SMOOTH GRADUAL DEP.
761201
761202
761203
761204 2155 O130* 0020 1.3 E L, (2155-2330). SMOOTH DIP & T.
761205
761206
761207 0300 0500 0305 1.0 B SMOOTH FEA.
761207 2040 1300* 0150 3.3 D L OF 4 HRS DURATION. SERIES OF SMALL PEAKS.
761208
7612U9 0900 1245 1015 2.0 E L, BEFORE 4 PEAKS.
761209 1430 0130* 2140 1.6 E L,(1430-1745). LRREG PEAKS. SUDDEN ONSET @ MAX ABSN
761210 0350 1100 0545 0.6 A WEAK & IRREG.
761210 1540 1730 1653 0.5 A IRREG & WEAK.
761210 2100 0130* 2310 1.6 C SYM.
761211 0300 1400 0500 2.0 E SERIES OF SMALL PEAKS BET. (0730-0830).
761211 2200 0700* 0110 2.1 E MODERATE STORM. L&T.
761212
761213
761214
761215
761216 1300 0300* 2040 0.6 A SOME ABSN BUT LOST IN 1.
761217 1600 1000* 0500 3.0 E PULSATIONS. IRREG ABSN.
761218 2100 2300 2120 2.0 C
761219
761220
761221
761222 0800 1000 0840 0.6 4
761222 1250 1330 1315 0.7 B 3 PEAKS & T.
761222 1820 2300 2000 1.3 C SHORT PEAK& T.
761223 2300 O0000* 2340 0.5 A SLIGHT DIP.
761224 1100 1200 1140 0.6 A
761225

25

|
|



THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB

790424 0300 0319 0308

0.6 A
790424 0319 U511 0410 2.1 C 3 PEAKS.
790424 0650 1010 0756 2.2 C SYM. EVENT.
790424 1240 1722 1622 0.7 E
790424 1820 2240 1928 1.7 E SV ABSN.
790424 2357 0648* 0310 4.9 E (3.8DB@0128). STORM.
790425 0654 0854 0658 0.7 B
790425 1048 1144 1135 0.4 B
790425 2010 2332 2119 5.0 F (3.6DB@2015).
790425 2336 0415* 0026 1.6 E (1-6DB@0211).
790426 1824 2355 2146 1.8 E SV ABSN.
790427 0123 0439 0315 2.7 E
790427 1609 1744 1652 1.3 C 2 PEAKS.
790427 1846 2007 1912 0.9 B
790427 2044 2133 2055 0.5 B
790428 2356 0340% 0150 3.4 E
790428 0407 0550 0443 1.7 C SYM EVENT.
790428 0606 0907 0702 3.5 E d
790428 0910 1034 1008 1.3 C 14
790428 1044 1132 1046 0.7 B
790428 1752 2240 2022 2 E SLIGHT ABSN.
790428 2249 0033* 0014 2.5 C
790429 0035 0057 0042 0.9 B SYM EVENT.
790429 0100 0342 0308 1.2 E LRREG ABSN.

-lc

790429 0414 0611 0439 SMALL SHARP PEAKS.

WEEE NECNY

790429 0612 0759 0703 3 E V SHARP PEAKS. t
790429 1002 1148 1030 9cl. t
790429 1551 1854 1749 1.4 E MINI F @ 1624. |
790429 1921 OO12* 2149 1 E STORM. t
790430 0018 0358 OO51 6 E MUCH ST. ]
t
790430 0408 0849 0501 5.0 E 1 MAIN FEA W ST. |
790430 0907 1319 1036 3.0 E Ll. i]
790430 1811 2210 1928 0.9 A SLIGHT ST. |
790501 0009 0333 0256 2.6 E NO MAIN FEA. |
790501 0336 0400 0348 0.5 A |
790501 0406 0704 0527 3.3 E 1 MAIN FEA. |
790501 1753 2059 1830 2.7 E IRREG ABSN.
790501 2112 2245 2138 1.2 C '
790501 2246 0929%* 0324 4.2 E (3.9DB@0036)&(3.3DBG@0745). STORM. |
790502 1919 2046 1931 0.8 B |
i;
790503 0208 0316 0257 0.6 B d
790503 1859 2106 2016 0.8 B
790503 2258 0209* 2344 1.5 C GRAD EVENT.
790504 1902 2019 1924 1.7 D 4
790504 2047 2246 2115 0.5 A ST. 7
790504 2304 0123% 0005 0.8 A ST. ft
790505 1851 1928 1901 0.5 B i
790506 |
790507 1744 1912 1826 0.5 B |
790508
790509 1844 1918 1900 0.5 A f
790509 1938 2238 1954 2.3 E 2 SHARP PEAKS. }
790510 1938 2106 2036 1.0 C L TO CUSP. I
79051) 0019 0100 0037 0.5 B '

790512

62


Abbreviations and Symbols Used in COMMENTS Column

ABS absorption INCL including SEV several

ABSN absorption IRREG irregular SHALL shallow

AFT after ISOL isolated SL slight(1y)

APPROX approximately L lead-in, event precursor ST structure

ASYM asymmetrical LAT latter SUP superposed

BET between LEV level sv slowly varying

CF similar to LGE large SYM symmetrical

cH chart MF main feature T event has tail

DEC decrease(ing) MINS minutes TM time mark

DEF defined NT not TOG together

DEP depression PCA Polar Cap Absorption UN Unusual (ly)

EX extended PER Period of v very

FEA(S) features PO Period of W with

FOLL fol lowed (by) POSN position WK weak

GEN general PREC preceded by & and

GRAD gradual PULNS pulsations > greater than

H(HLY) highly QD quiet day curve < jess than

HR hour Qoc quiet day curve # approximately

I interference REG region ? possibly

INC increase SEP separation * event extends over
midnight

Catalog Use in Statistical Studies

We provide the following information for the researcher using this catalog in a statistical study:

Polar Cap Absorption (PCA) Events. We intend the catalog to serve primarily as a guide to auroral
absorption events detected at Abisko, but the absorption measured there during these periods may include
a PCA component. See Table 1 below. Table 1 lists the PCA events noted in riometer data from Dec 1975
to the end of the IMS period; almost all readings were taken from the 30-MHz instrument operated at
Godhavn (N69. 26°, W53.51°, L'= 21) by the Ionosphere Laboratory, Danish Meteorological Institute, Lyngby,
Denmark. Absorption values over the interval Jul 1976-Dec 1979 appeared in Ionlab Reports 47-50, 52,
55-58, 64, 76 and 189 [Stauning, abc]. Because Godhavn data are unavailable before Jul 1976, we
inspected the Narssarssuaq (N61.17°, W46.01°, L = 7.31) record over the interval Dec 1975 through Jun
1976. Absorption values for Dec 1975-Jun 1976 appeared in Ionlab Reports 45 and 46 [Stauning, a].

Table 1. Polar Cap Absorption Events During Period Covered by Catalog

Start End Maximum Value
Date Time Date Time Date Time Abs Freq Station
(uT) (ut) (UT) (4B) (MHz)

760501 0600 760502 0000 760501 0900 2.5 30 Narssarssuaq*
760822 1200 760823 0100 760822 1700 1.0 30  Godhavn
770917 0500 770920 2200 770919 2100 5.0 30 Godhavn
770924 0700 770925 2200 770924 1500 2.0 30 Godhavn
771012 0900 771012 2000 771012 1500 0.5 30 — Godhavn
771112 1200 771123 2300 771122 1800 4.5 30 Godhavn
780213 1000 780215 2200 780214 1600 >10.0 30  Godhavn
780417 0600 780504 0000 780430 1200 >10.0 30 — Godhavn
780507 0400 780510 0300 780507 0700 4.0 30 Godhavn
780531 1500 780602 1800 780601 1000 1.0 30 — Godhavn
780623 1800 780626 1200 780624 1800 2.0 30 Godhavn
780923 1200 780927 1800 780924 1600 >12.0 30  Godhavn
781110 1000 781112 2000 781111 1700 1.5 30 — Godhavn
790403 1200 790405 1800 790404 1000 2.0 30 — Godhavn
790606 1800 790609 0000 790607 0200 6.0 30 Godhavn
790706 2200 790708 0200 790707 1100 2.0 30 Godhavn
790819 0900 790823 0000 790820 1700 6.0 30 Godhavn
790915 1200 790921 1800 790917 1500 1.5 30 Godhavn

*L=7.31 at Narssarssuaq and 21 at Godhavn.



THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB
760429 1800 2020 1930 0.9 A ST.
760429 2030 2330 2207 2.9 C 2030-2150,L.ST.
760429 2330 0210* 0020 1.7 C 1.4DB@2350.
760430 0410 0800 0515 2.2 E
760430 0820 1100 0900 1.9 E
760501
760502 2000 2115 2000 5.8 F
760502 2200 0100* 2310 6.6 E CONSIDERABLE ST.PULSATIONS. MAJOR STORM.
760503 0100 1050 0155 2.4 E CONSIDERABLE ST.PULSATLIONS.6.7DB@0555.3.1DB@0840.
760503 1100 1240 1200 2.6 C ST.
760503 1910 2040 1955 0.8 A
760503 2110 2315 2125 0.8 A PERIOD OF WEAK ABSN.
760504 0015 U110 0050 0.9 B CUSP.
760504 0130 1315 0810 2.4 A PO ABSN W BROAD FEAS GRAD INCREASE IN INTENSITY
760504 1530 0660* 0230 3.6 E IRREG ABSN 1655 2.1DB 1855 2.9DB 2030 2DB TM UNSURE
760505 1020 1730 1230 1.3 E P.O. SLOWLY VARYING ABSN.1.2DB@0515. 0.8DB@1105
760505 1820 2250 1905 1.7 B PERIOD OF IRREG.ABSN.
760506 0000 0320 0100 1.0 A MF(0000-0200)T.
760506 0320 0605 0340 2.2 D
760506 0720 0910 0800 1.1 A
760506 0910 1350 1050 1-1 A SOMEWHAT LRREG.
760506 1940 0330* 2310 3.3 C PERIOD OF STRUCTURAL ABSN,# SYMMETRICAL OVERALL.
760507 2040 0115* 2350 2.1 E IRREG.L(2040-2305),MF ST.#1-0DB.
760508 0240 0530 0255 2.7 D PEAK SLIGHTLY CUSPED.
760508 0720 0820 0750 0.8 A
760508 1900 1930 1915 0.6 A
760508 2030 2200 2115 1.0 B
760509 0120 0330 0145 0.8 A
760509 0450 0600 0515 0.5 A
760509 2330 0900* 0450 1.1 A REMARKABLE PERLOD OF STEADY ABSN.
760510 1540 1615 1543 0.8 B
760511 0200 1000 0740 1.5 A ANOTHER PER OF STEADY ABSN.W A-TYPE D1P NEAR END.
760511 1100 1350 1245 0.6 A
760511 1740 1915 1745 1.4 €
760511 2140 0110* 2220 1.4 C L.( 2140-2220) 1.3DB@2305.
760512 1220 1400 1320 0.5 A
760513
760514 1810 0600* 2100 0.9 A EXTENDED PERIOD OF STEADY ABSN.
760515 2220 2345 2250 2.2 C DEEP FEATURE,SYMMETRICAL.NO ST.
760516
760517
760518
760519 1805 0420* 0020 1.7 B PERIOD OF LRREG.ABSN.1.2DB@2155. 0.9DB@1850.
760520 0420 0820 0620 1.7 E
760520 1050 1240 1100 0.6 A END OF FEATURE. NEAR 1240.
760520 1605 1955 1855 1.1 B PERIOD OF IRREG.ABSN.U.8DB@ 1755.
760520 1955 2250 2020 1.7 C MUCH ST.T.2200-2250.
760520 2250 0210* 2345 1.0 A PERIOD OF # STEADY ABSN.
760521 0210 0400 0230 3.4 D
760521 0400 0040* 0435 1.3 A
760522 0220 0350 0245 0.5 A
760522 0700 0840 0730 0.5 A
760522 1530 1600 1540 U.5 A
760522 1810 2050 2007 2.0 E 2 FEATURES,SECOND W ST.1.1DB@1850.
760522 2050 0000* 2050 3.1 F CLASSIC FEATURE.

16

|
'

(Aenea



THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB
781003 2354 0329* 0035 1.0 E SMALL ABSN.
781004 0436 0749 0611 1.4 E
781004 0806 1219 0939 1.3 ET & I.
781004 2116 2216 2150 0.4 B
781004 2235 0100* 2349 1.7 E L & T TO A 3 PEAKED DIP.
781005 0243 0646 0340 1.4 E LONG, GRAD EVENT.
781006
781007
781008 2114 0000* 2219 0.7 A SL ST.
781009 2318 0809* 0009 3.7 E MF(2355-0115). LONG T.
781010 2114 2220 2127 1.4 C SHORT EVENT IN T.
781011
781012 2012 2050 2028 1.1 C CUSP-LIKE FEA.
781012 2052 2211 2054 1.2 F SMALL FEA W I @ END.
781013 0034 0206 0123 0.6 A SHORT EVENT.
781014 NO DATA
781015 NO DATA
781016 NO DATA
781017 NO DATA
781018 NO DATA
781019 NO DATA
781020 NO DATA
781021 NO DATA
781022 NO DATA
781023 NO DATA
781024
781025
781026 1852 1937 1910 1.4 C I THROUGHOUT.
781026 2100 2135 2119 0.9 B I @ START. 1 DIP.
781026 2141 0326* 2236 3.5 F LARGEST ABSN IN 2ND DIP.
781027 0400 0626 0608 1.0 E SHALLOW ABSN. NO MAIN FEA.
781027 1926 2037 1954 0.9 B SL I.
781027 2040 2106 2059 0.5 B SL I.
781027 2204 2250 2214 0.8 B CUSP SHAPE.
781028 0316 0622 0513 2.6 E 2 MAIN PEAKS.
781028 0657 0735 0718 1.9 C 1 BEFORE & AFTER.
781028 2306 0105* 2344 2.4 C L MAIN PEAK W T.
781029
781030 0524 0700 0649 0.9 B
781030 0703 0841 0742 0.9 B CONSECUTIVE TO PREVIOUS EVENT.
781030 1534 1700 1538 4.3 G 1 AFTER SPIKE BUT SOME ABSN LATER.
781030 1909 2018 1946 1.1 C SL I @ END.
781030 2018 2053 2039 0.6 B 1 SMALL BUT SHARP PEAK.
781030 2149 2336 2154 1.2 E QUITE FAST ONSET. LITTLE ABSN.
781031 0309 0354 0325 0.5 B LITTLE ST.
781031 0358 0503 0431 0.4 B LITTLE ST.
781031 1119 1134 1126 0.5 B SMALL CUSP.
781031 1905 1948 1921 0.6 B CUSP.
781031 2014 2216 2025 1.0 C SHORT PEAK W LONG T.
781101 0206 0416 0308 0.7 A SL ST.
781101 0531 0955 0934 0.6 B GRAD FEAS.
781101 1024 1259 1124 2.0 E L BEFORE MF.
781102 1758 1930 1843 0.8 B SLL.
781102 1954 2119 2047 0.4 A SL I.
781102 2152 2301 2154 0.6 B MINI D SHAPE W SL I.

53

'


THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB
790306 2348 0150* UO031 0.7 B
790307 0402 0626 0458 1.5 E
790307 1936 1954 1944 0.4 B
790308 0002 0212 0104 0.6 A
790308 2240 0008* 2314 1.0 C SMALL ST.
790309 0127 0250 0210 0.8 A GRAD ST.
7903100120 0310 0215 2.0 C 2 MFS.
790310 0334 0534 0510 3.3 C PULN-LIKE ST.
790310 0535 0628 0538 1.5 C SERIES OF PEAKS. QUITE FAST ONSET.
790310 1838 1918 1856 0.5 B
790310 2020 2136 2056 1.1 C SL ST.
790311 0020 0130 0034 0.7 B LONG T.
790311 0630 0710 0658 0.4 B SL T.
790311 1244 1325 1249 0.4 B 1 @ END.
790312
790313 0410 0546 0444 1.3 C CUSP W T.
790314
790315
790316
790317
790318 0539 0718 0600 2.2 D ENDS IN Il.
790319
790320 2114 2200 2138 1.0 C I IN ST.
790321
790322 2140 2240 2211 0.4 B
790323 0236 0336 0250 0.8 B
790323 2217 0002* 0036 0.6 B SL ST.
790324 0146 0213 0152 0.4 B SHORT EVENT.
790324 1919 2234 - 2018 1.8 C 1 SHARP, SHORT PEAK.
790324 2320 0149* 2334 2.9 E QUITE FAST ONSET.
790325 0155 0440 0303 1.2 E IRREG ABSN.
790325 0447 0810 0600 2.9 E 1 MF W PULNS.
790325 2000 2125 2038 1.5 C
790325 2139 2232 2210 3.5 C ST.
790325 2242 0046* 2300 1.5 C
790326 0110 0210 0202 0.8 B
790326 0214 0740 0459 2.7 E (1-2DB@0302).
790326 0830 1122 0918 1.5 E Ll.
790326 1146 1238 1213 1.0 B 1 BEFORE & AFTER EVENT.
790326 1731 1909 1834 1.6 C QUITE FAST ONSET.
790326 2059 0020* 2110 1.6 E LONG T.
790327 0431 0849 0514 1.4 E IRREG ABSN. I.
790327 1821 2025 1841 1.5 C FAST ONSET IN MIDDLE.
790327 2104 0030* 2344 2.3 E
790328 0035 0500 0046 2.3 E PULSATIONS @ 0300-0400.
790329 0609 0649 0623 0.6 Bl.
790328 2040 2315 2106 1.5 E L&T TO SPIKE EVENT.
790328 2356 U140* 0005 2.8 F 1 @ 0005.
790329 0211 0549 0324 5.3 E MUCH ST.
790329 0646 0828 0756 3.3 E SERIES OF FAST ONSETS.
790329 1745 2039 1922 2.0 E L&T.
790329 2155 0023* 2307 0.5 A ST.
790330 0110 0208 0128 2.8 C CUSP.
790330 0405 0625 0537 2.3 E ST.
790331 0U06 0120 0014 1.6 C QUITE FAST ONSET.

60

|
|

|



THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB
770705 1440 1520 1451 1.0 B CUSP
770705 1830 1930 1856 1.0 A STRUCTURE
770705 2110 2250 2115 0.8 A
770706 1810 1930 1834 0.7 AT
770706 2040 2205 2141 1.3 C L(2040-2138)
770706 2230 2340 2322 0.5 A IRREG
770706 2355 0130* 0041 1.3 A V LRREG,ST
770707 0130 0330 0201 1.0 A
770707 0405 0650 0548 0.8 A
770707 0740 1115 0830 0.8 A
770707 1440 1630 1517 0.6 A
770708 1210 1515 1407 1.0 A BROAD ST
770708 2100 0500* 0155 1.3 A L,MF(2500-2800),T.ST.
770709 0530 1450 0933 1.2 A L,MF(0620~1450)
770709 1710 1805 1747 0.6 A
770709 1910 2140 2036 2.7 C SUDDEN ONSET @ 2035 1.3DB@1936
770709 2315 0220* 0045 3.9 E FAST ONSET @ 0048.
770710 0315 0500 0405 1.6 A
770710 1505 1630 1547 1.5 4
770710 1705 0040* 1951 1.9 E F ONSET @ MAX.L(1705-1730).
770711 0340 0730 0422 1.5 A DOUBLE STRUCTURE,T.1.00DB@0538
770711 0730 1150 0828 0.9 A
770711 1400 1905 1623 1.1 A CENTRE FEA (1510-1740) LARGEST
770711 2240 0020% 2329 1.0 AL
770712 0250 0420 0319 0.6 Al
770712 2300 0715* 0029 1.3 A EXTENDED PERIOD OF SV ABSN. W 2 MAIN PEAKS
770713 1510 1900 1647 1.0 A ST
770713 2245 0145* 2340 1.0 A BROAD ST
770714 0240 0730 0351 2.7 E MF (0240-0600),T.ST.
770714 0900 1600 1152 1.5 A BROAD ST L (0900-1115) ,MF.
770715 0010 0630 0401 1.5 A L,MUCH ST.? 2 FEAS. 1.3 DB @ 0050
770715 1500 1550 1520 0.6 A
770716 0350 0450 0431 0.6 A
770716 0630 0730 0708 3.0 C CUSP
770716 0730 0950 0921 1.3 A #STEADY ABSN W BROAD PEAK NEAR END.
770716 0950 1310 1047 5.8 E CUSP-LIKE ST. PEAK
770716 1330 1400 1335 1.0 B BROAD CUSP
770716 1745 1950 1858 2.2 C ST
770716 2115 2230 2119 2.9 F
770716 2230 0230* 2250 2.7 D
770717 0530 0800 0655 1.8 C ST
770717 0830 1300 0943 1.3 A ST 1.3 DB @1058
770717 1930 2130 2047 2.4 C SHARP ST 1.6 DB@1945
770717 2130 0130* 2300 1.3 A
770718 1150 1215 1158 0.4 A
770718 1300 1730 1337 1.8 E LONG T. SMOOTH
770718 1750 1850 1817 0.4 A
770719 0155 0330 0225 3.1 C SYM DIP.T(0250-0330)
770719 0620 1240 0657 2.6 E SYM DLP(0620-0730),LONG IRREG T FOLL,W ABSN#1.0DB
770719 1330 1710 1555 0.9 A WK,IRREG ABSN
770719 1710 1950 1816 0.8 A SOME ST.L TO NEXT FEA.
770719 1950 2200 2037 2.1 C ST
770719 2335 0315* 0024 3.4 E ST.EDGE @ 0024
770720 0415 1320 1011 4.9 E EDGES @ 1246(2.8DB) IN T.
770720 1326 1515 1427 2.2 C ROUNDED PEAK

33



UAG-38

UAG-39

UAG-40

UAG-41

UAG-42

UAG-43

UAG-44

UAG-45,

UAG-46

UAG-47

UAG-48A

UAG-49

UAG-50

UAG-51

UAG-52,

UAG-53

UAG-54

UAG-55

"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, Boulder, CO; Juan D. Roederer,
University of Denver, Denver, CO; and M.A. Shea and D.F. Smart, Air Force Cambridge Research
Laboratories, Hanscom AFB, MA, December 1974, 110 pp, $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, Boulder, CO,
February 1975, 144 pp, $2.05.

“H-Alpha Synoptic Charts of Solar Activity for the Period of Skylab Observations, May 1973 - March
1974," by Patrick S. McIntosh, NOAA Space Environment Laboratory, Boulder, CO, February 1975, 32
pp, $0.56.

“H-Alpha Synoptic Charts of Solar Activity During the First Year of Solar Cycle 20 October 1964 -
August 1965," by Patrick S. McIntosh, NOAA Space Environment Laboratory, Boulder, CO and Jerome T.
Nolte, American Science and Engineering, Inc., Cambridge, MA, March 1975, 25 pp, $0.48.

“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, University of
Colorado, Boulder, CO, April 1975, 49 pp, $1.15.

"Catalog of Observation Times of Ground-Based Skylab-Coordinated Solar Observing Programs," com-
piled by Helen E. Coffey, World Data Center A for Solar-Terrestrial Physics, NOAA, Boulder, CO,
May 1975, 159 pp, $3.00.

"Synoptic Maps of Solar 9.1 cm Microwave Emission from June 1962 to August 1973," by Werner Graf
and Ronald N. Bracewell, Stanford University, Stanford, CA, May 1975, 183 pp, $2.55.

"Auroral Electrojet Magnetic Activity Indices AE(11) for 1972," by Joe Haskell Allen, Carl C.
Abston and Leslie D. Morris, National Geophysical and Solar-Terrestrial Data Center, Boulder, CO,
May 1975, 144 pp, $2.10 (microfiche only). .

“Interplanetary Magnetic Field Data 1963-1964," by Joseph H. King, National Space Science Data
Center, NASA Goddard Space Flight Center, Greenbelt, MD, June 1975, 382 pp, $1.95.

"Auroral Electrojet Magnetic Activity Indices AE(11) for 1973," by Joe Haskell Allen, Carl C.
Abston and Leslie D. Morris, National Geophysical and Solar-Terrestrial Data Center, Boulder, CO,
June 1975, 144 pp, $2.10 (microfiche only).

“synoptic Observations of the Solar Corona during Carrington Rotations 1580-1596 (11 October 1971
~ 15 January 1973)," [Reissue of UAG-48 with quality images], by R.A. Howard, M.J. Koomen, D.J.
Michels, R. Tousey, C.R. Detwiler, D.E. Roberts, R.T. Seal, and J.D. Whitney, U.S. Naval Research
Laboratory, Washington, DC, and R.T. Hansen and S.F. Hansen, C.J. Garcia and E. Yasukawa, High
Altitude Observatory, NCAR, Boulder, CO, February 1976, 200 pp, $4.27.

"Catalog of Standard Geomagnetic Variation Data," prepared by NOAA Environmental Data Service,
Boulder, CO, August 1975, 125 pp, $1.85.

“High-Latitude Supplement to the URSI Handbook on Ionogram Interpretation and Reduction," edited
by W.R. Piggott, British Antarctic Survey, c/o Appleton Laboratory, Slough, UK, October 1975, 294
pp, $4.00.

“synoptic Maps of Solar Coronal Hole Boundaries Derived from He II 304A Spectroheliograms from the
Manned Skylab Missions," by J.D. Bohlin and D.M. Rubenstein, U.S. Naval Research Laboratory,
Washington, DC, November 1975, 30 pp, $0.54.

“Experimental Comprehensive Solar Flare Indices for Certain Flares, 1970-1974," by Helen W. Dodson
and E. Ruth Hedeman, McMath-Hulbert Observatory, University of Michigan Pontiac, MI, November
1975, 27 pp, $0.60.

"Description and Catalog of Ionospheric F-Region Data, Jicamarca Radio Observatory (November 1966
- April 1969), by W.L. Clark and T.E. Van Zandt, NOAA Aeronomy Laboratory, Boulder, CO, and J.P.
McClure, University of Texas as Dallas, Dallas, TX, April 1976, 10 pp, $0.33.

"Catalog of Ionosphere Vertical Soundings Data," prepared by NOAA Environmental Data Service,
Boulder, CO, April 1976, 130 pp, $2.10.

“Equivalent Ionospheric Current Representations by a New Method, Illustrated for 8-9 November 1969
Magnetic Disturbances," by Y. Kamide, Cooperative Institute for Research in Environmental
Sciences, University of Colorado, Boulder, CO; H.W. Kroehl, Data Studies Division, National
Geophysical and Solar-Terrestrial Data Center, Boulder, CO; M. Kanamitsu, Advanced Study Program,
National Center for Atmospheric Research, Boulder, CO; Joe Haskell Allen, Data Studies Division,
National Geophysical. and Solar-Terrestrial Data Center, Boulder, CO; and S.-I Akasofu, Geophysical
Institute, University of Alaska, Fairbanks, AK, April 1976, 91 pp, $1.60 (microfiche only).



THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB
770720 1710 1750 1742 1.0 A BROAD ST
770720 1750 2350 2134 1.7 E IRREG ST
770720 2350 0530* 0220 2.3 E 1RREG ST
770721 0615 1500 0706 0.9 A MF(0615-0830),LONG T W ST
770721 1710 1830 1755 0.5 A
770721 1950 2140 2039 0.7 A
770721 2215 0230* 0010 3.1 C L, SINGLE MF(2355-0100),T
770722 0450 1010 0801 1.5 A BROAD ST
770722 1010 1820 1036 2.1 A LONG T
770722 2110 0130* 2216 0.68 A
770723 0245 0540 0339 0.9 A
770723 1100 0730* 1800 1.2 A L(1100-1330),EXTENDED PERIOD OF # STEADY ABSN
770724 0940 1645 1046 1.5 A MF(0940~-1300),T
770724 1645 1900 1800 1.2 B L(1645-1750),MF W CUSP ,T(1830-1900)
770724 1910 2102 1950 1.7 C CUSP
770724 2102 2130 2106 1.2 B
770724 2130 0900* 0035 1.8 A ST
770725
770726
770727
770728 1720 0015* 1805 0.8 A SV ABSN
770729 0U15 0515 0016 1.0 C MF(0015-0130),T W ST,1.0DB@0016,2.5DBG0309.
770729 0540 1900 0654 0.9 A EXTENDED PERLOD WK ABSN,SOME ST,0.9DB@0654
770730 0040 1745 0234 2.5 E EXTENDED PER OF IRREG ABSN TAILS OFF AFTER 1800
770730 1745 2310 2041 1.0 A LRREG,WK ABSN.I NEAR END
770731 0205 0340 0247 2.5 C SINGLE SYMETRICAL FEA.
770731 0340 0730 0435 2.9 C L(0340-0420);MF;T, (0515-0730).
770731 2100 2230 2148 0.6 A SOME I.
770801 0420 0530 0454 0.5 A
770801 0850 1240 0958 0.9 A L,MF(0940-1030);T.
770801 1400 1800 1600 0.5 A
770802 0110 0210 0143 0-5 A
770803 0035 0600 0535 0.7 A SOME 1. 0.6DB@0125
770803 1030 1725 1311 0.6 A
770803 1725 2010 1856 1.2 A ST.
770803 2010 2140 2116 1.3 B TINY F-TYPE EDGE AT 2019. 0.8DB @2019.
770803 2140 0145* 2355 0.6 A PERIOD OF IRREG,WK ABSN.
770804 0210 0510 0339 0.8 A L,MF(0300-0410):T
770804 1900 1950 1930 0.6 A
770805 0015 0240 0129 1.2 A ST.
770805 0315 0515 0337 1.0 A
770805 0515 0620 0547 0.9 A
770805 0700 1000 0736 2.7 C L,M-F(0720-0950),SHORT T. SOME ST.
770805 1350 1400 1423 0.6 A
770805 1820 2230 1829 1.5 F SUDDEN ONSET IRREG ABSN BROAD DIP AT END 1.5DB@2147
770805 2230 020U* 0038 2.4 E BROADLY SYMETRICAL.
770806 0300 0830 0559 5.1 E LGE FEATURE,ST-ABSN 1.3DB AT 0830.
770806 0830 1500 1112 3.6 E FEA MERGE INTO REGION OF STEADY ABSN.
770806 1500 2045 1740 1.6 A PO SV ABSN,BROAD FEA ABSN 1.0 @2045.
770806 2045 0200* 2335 2.4 E MERGES INTO REG OF STEADY ABSN.
770807 0445 0810 0537 1.7 A IRREG FEA,ST.
770807 0810 1600 0918 2.4 E ROUNDED FEA AT START MF 0810-1140 T
770807 1930 2030 2000 1.7 C CUSP.
770807 2100 2220 2139 1.5 F SMALL EDGE @2137 L,M.F.(2130-2200),T.1.2DB @2137.
770808 0005 0415 0136 2.4 C A-TYPE SYM.BROAD ST.T(0300-0415) 2.3DB@0214

34

f
\

t
|
i



THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB
780705 0400 0652 0457 5.7 E V. SHARP PEAKS.
780705 0745 1125 0850 1.4 El.
780705 1644 1825 1733 1.0 C ONE SMALL PEAK.
780705 1858 2154 1900 2.1 F LITTLE ST.
780706
780707 0030 0224 0045 0.7 C NO MAIN FEA.
780707 1851 2100 1854 0.8 F 2 FEAS.
780707 2227 2350 2319 0.7 BL. D SHAPE.
780708 0027 0116 0038 0.5 A SL I.
780708 0249 0400 0332 0.6 B I.
780708 0917 1100 0943 0.7 Al.
780708 1656 1843 1746 0.7 A
780708 1920 2042 1956 1.2 C 1 PEAK.
780708 2146 2330 2233 1.1 C MANY SMALL PEAKS.
780708 2346 0130* 0032 0.7 B
780709 0247 0429 0401 0.7 A SL ST.
780709 1920 1934 1933 0.9 B ENDS IN I.
780710 0812 0850 O819 3.7 F 1 MAIN FEA. I. MAY BE ARTEFACT.
780710 1052 1101 1058 0.6 F ATYPICAL FEA. MAY BE ARTEFACT.
780711
780712
780713 2330 0300*% 0228 2.0 E MAX ABSN. OCCURS IN SHARP PEAK.
780714 0455 0740 0610 1.4 E IRREG ABSN.
780714 1010 1300 1036 1.2 E STEPPING IN SIGNAL LEVEL.
780714 1906 2035 1923 1.2 C T.
780714 2213 0026* 2221 0.7 A I.
780715
780716 0059 0325 O112 2.4 E 1 @ START.
780717 2001 2040 2013 0.9 B CUSP.
780718 0046 0152 U103 0.6 AL.
780718 1738 1825 1749 0.5 A
780718 2017 2207 2048 0.9 A 2 FEAS W I.
780719 0052 0125 0100 1.3 D 1 @ END.
760720
780721 0022 0208 0038 0.6 A SL ST.
780722 0220 0404 0251 1.4 C NO ST.
780722 0513 0755 0610 0.9 E Il.
780722 1934 2032 1954 0.5 Al.
780722 2301 2336 2315 0.7 B
780723 0500 0651 0550 2.6 D TYPICAL FEA.
780723 1927 2U18 2000 U.4 B 2 VERY MINOR DIPS
780723 2040 2349 2238 1.2 E
780723 2349 0154* 0000 0.8 A QUITE FAST ONSET
780724 1908 2026 1943 0.6 B
780724 2331 0107* 0101 0.8 B FAST DECAY
780725 0113 0158 0116 0.5 B SL I.
780725 1927 2057 1945 0.6 A L BEFORE START
780725 2108 214i 2116 2.8 C LARGE POINTED CUSP; QUITE FAST ONSET
780725 2202 0034* 2310 1.0 E 1 BETWEEN THIS EVENT& PREViOUS ONE
780726 i.
780727 Lt.
780728 =
760729 1.
780730 1.
780731 I.

49

sven eee Et nae et SA Nah recent



THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT ut uT oD
760903 0205 0330 0245 0.8 A
760903 0430 0830 0519 1.4 E
760903 0830 1115 O911 1.2 A
760903 1115 1530 1245 1.9 A SHORT L (1115-1135).
760903 1530 2040 1728 0.6 A
760903 2040 2240 2137 1.7 C
760904 0240 0440 0318 1.8 C IRREG.
760904 0440 0730 0615 2.7 E
760904 0730 1130 0812 2.2 E
760904 1200 1450 1300 1.1 A
760904 1450 2040 1532 1.9 E MF W CUSP. SHORT L (1450-1510).
760904 2040 0250* 0026 2.0 C L (2040-2350).
760905 0345 0730 0552 0.5 A
760905 1015 1200 1054 0.8 A
760905 1210 1615 1343 1.0 A
760906 0150 0715 0244 1.3 A MF (0150-0400). T.
760906 0850 1900 1701 0.8 A
760906 1930 2330 2121 0.9 A
760906 2330 0510% 0112 2.1 C L, MF (0045-0250), T.
760907 0815 2150 1330 1.2 E
760907 2150 0245* 0018 0.9 A
760908 0850 1750 1627 1.0 A SV DEPRESSION OF TRACE.
760908 1750 2000 1924 1.4 C SMALL EDGE @1924.
760909 0300 0500 0353 0.6 A
760909 1300 1700 1508 0.9 A
760910 2118 2200 2118 0.5 B SOME I.
760910 2200 0830* 0027 1.2 C FEATURELESS DEP. END VAGUE.
760911 2310 U920* 0400 1.0 E
760912 1430 1930 1711 U.8B A
760912 1930 0000* 2100 0.6 A
760913
760914 1330 1730 1508 1.2 A
760915 0350 0830 0535 1.9 C
760915 0900 1930 1200 0.8 C
760915 1930 2320 2225 0.8 A
760916 0530 0900 0637 0.9 A
760917 1800 0210*% 2340 1.5 F IRREG L, MF (2330-2610).
760918 0315 0450 0334 3.4 D
760918 0450 1140 0540 5.8 E MF (0450-0800). T.
760918 1140 1630 1401 0.6 A
760918 1800 2230 2100 0.7 A
760919 1220 1420 1300 1.2 B CUSP.
760919 1600 2105 1901 1.8 F L, EDGE @ 1900.
760919 2245 0220% 2251 2.2 D
760920 0020 0230 0051 3.5 D
760920 0230 0530 0413 7.3 E ABSN 2.0DB @ 0530.
760920 0530 1000 0700 6.9 E 2 BROAD,DEEP FEAS W ST.
760920 1000 1330 1116 1.6 C IRREG ABSN.
760920 1700 2350 2118 4.0 F STEPPED EDGES @ 2027 & 2039. L.
760920 2350 0245* 2353 3.1 F MF (2350-0100). T.
760921 0245 0750 0333 3.7 C€
760921 0750 1500 0945 1.5 E A-TYPE FEA FOLL BY PER OF IRREG ABSN.
760921 2200 0145* 2343 2.1 C L, MF (2315-2405), T.
760922 U345 1110 0632 2.2 E
760922 1110 1545 1302 1.5 E

22



THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB
780912 2338 U122* 00V00 0.5 A SL ST.
780913 0226 0336 0244 0.5 A SLI.
780914 NO DATA
780915 NO DATA
780916 NO DATA
780917 NO DATA
780918
780919
780920
780921 0409 0703 0431 1.1 E T.
780922 0309 0605 0520 0.6 A VERY SL ST.
780923 0421 0703 0451 0.7 A I @ V6OOUT.
780923 1214 1850 PCA.
780923 2020 2226 2142 1.8 CL.
780924 0307 1830 PCA.
780924 2146 2232 2210 0.8 B
780925 0251 0415 0342 1.2 C SLOW ONSET.
780925 0449 1819 PCA. I @ 0700-1100UT.
780925 2142 2315 2238 1.0 C 1 FEA.
780926 0347 0720 0541 3.2 E MANY SHARP PEAKS. SOME 1 @ END.
780926 0819 1111 0852 3.7 E 2 MAIN FEAS, Wl.
780927 0110 0351 0211 3.8 E MANY SHARP PEAKS.
780927 0359 0825 0536 4.1 E 1 MAIN FEA W ST.
780927 1059 1214 1115 1.3 CL & T.
780927 1657 1916 1719 3.2 F 4 DIPS OF DECREASING ABSN.
780927 2001 2027 2008 0.5 B L TO NEXT EVENT.
780827 2040 2114 2047 4.7 F DOUBLE STEPPED ONSET.
780927 2114 2209 2141 1.5 C SL ST.
780927 2217 2229 2223 0.6 B
780927 2243 0059* 0033 4.2 F LARGE SYM DIP @ END OF APPROX. | HR.
780928 0106 1204 0508 7.4 E PROLONGED IRREG ABSN W PULSATIONS.
780928 1947 2107 2047 0.7 B
780928 2113 2351 2212 4.0 E 2 SPIKE-LIKE PEAKS NEAR START.
780928 2353 0005* Q0UOO0 0.5 B 1 SMALL DIP.
780929 0025 0130 0057 0.6 B
780929 0301 0718 0412 5.9 E MAJOR STORM & PULNS.
780929 0842 0852 0848 0.4 A
780929 1303 1346 1311 6.9 B ST IN T.
780929 1623 1807 1627 1.7 F 1 NEAR START.
780929 1823 1853 1831 0.4 A SL I.
780930 0558 1503 U713 3.8 E END LOST IN POWER BREAK. 1 @ 0715UT.
781001 0228 0326 0239 1.1 C
781001 0432 0531 0527 0.7 B 2 SMALL PEAKS.
781001 0646 1238 1131 1.3 E SMALL PROLONGED EVENT.
781001 1241 1335 1301 0.7 B NO ST.
781001 1403 1441 1424 0.9 B MANY SMALL IRREG PEAKS.
781001 2054 2343 2222 2.9 E 1 MAJOR PEAK W ST BEFORE & AFTER.
781002 0318 0644 0359 1.4 E LONG EVENT. SL ST.
781002 1926 2014 2001 0.6 B
781002 2023 2120 2039 1.0 C l.
781002 2305 0033* 2347 0.6 BI.
781003 O157 2322 0210 0.7 Bl.
781003 0644 0753 0723 0.9 BL.
781003 1035 1246 1045 0.8 A SL ST.
781003 1327 1450 1408 0.4 B

52

4
'

ss



THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB

790331 0237 0438 0348 1.8 C ONE GRAD. EVENT.
790331 2154 U016* 2337 4.4 F L(2154-2320). '
790401 0257 0649 0410 3.5 E
790401 0834 1045 0947 0.9 A ST.
790401 1824 1905 1838 0.9 B
790401 2112 2312 2207 3.0 C 2 PEAKS.
790402 0102 0442 0140 3.3 E SERIES OF PEAKS. 4
790402 0442 0846 0532 1.6 E
790402 1613 1822 1722 1.5 ¢€
790402 2146 2300 2213 0.7 B |
790403 0209 0544 0332 1.5 E GRAD ST.
790403 0705 0852 0728 1.3 C SOME I.
790403 0950 1033 1002 1.2 F SHORT WI.
790403 1558 2022 1939 0.7 A SLIGHT ST.
790403 2038 2356 2208 1.2 E
790403 2359 1100* 0404 3.9 E IRREG ABSN.
790404
790405 0155 0215 0158 0.5 B
790405 1644 1746 1702 0.5 B
790405 2145 0007* 2234 0.8 A ST. i
790406 0316 0600 0444 1.8 E |
790407 2220 0116* 2333 2.4 E ST.
790408 1144 1656 1442 1.1 El. k
790408 1843 1938 1850 0.4 B SOME I.
790408 2026 2205 2107 1.1 CT.
t

790409 0054 0236 0148 0.6 B SLIGHT ST.
790410
790411
790412 1851 2121 2042 1.1 E 3 PEAKS I
790412 2251 0036* 2309 1.6 F LITTLE ST.
790413
790414
790415
790416 1756 1833 1812 0.4 A i
790417 0040 0146 0058 0.8 B MINI D EVENT. i
790417 0644 L115 0834 2.3 E MUCH I.
790417 1240 1300 1246 0.6 BL.
790417 1907 2145 2030 4.3 F LITTLE ST.
790417 2149 0001* 2311 1.0 C L&T. j
790418 2224 2325 2321 0.4 A SLIGHT ST. t
790419 1758 2003 1830 0.4 A I
790420 2336 O117% 0120 0.4 AL.
790421
790422 0057 0402 U218 3.7 E SHARP PEAKS.
790422 0405 0732 0617 1-1 E Ll.
790422 0837 1006 0916 0.4 A SLIGHT ST.
790422 1139 1243 1200 0.9 BI.
790422 1834 1914 1846 -O F MINI FEA.
790422 1921 2135 2044 0.6 B

4B

790423 0040 W110 0103
790423 0141 1047 0723
790423 1214 1450 1304
790423 1656 2232 1905
790423 2346 U239* O110

(3.5DB@0346). STORM.
D SHAPE.

0
0
L
i}

790422 2340 VO20* 2353 0
0
3
1
L GRAD ST.
2

wR VS
tod oo ot te

61

i
|
i]
|
|




THE ABISKO CATALOG (Continued) '

DATE START END MAXIMUM TYPE COMMENTS

UT UT UT DB 1
771201 1600 2100 2040 3.1 F L, SHALLOW EDGE AT 1820
771201 2100 1110* 0400 6.9 E IRREG FEA. T AFTER 0600
771202 1510 2100 1725 2.0 C L, MF W SHARP ST.1650-1900. T.
771202 2115 0140* 2200 4.5 C L, MF 2 SHARP PEAKS,(2150-2230). T.
771203 0140 0640 06300 1.2 A L(0140-0210).
771203 1900 2230 2100 0.5 A
771203 2230 0200* 2334 0.8 A T(0000-0200).
771204 1455 1548 1523 0.4 4
771204 2300 1200* 1000 2.1 E }
771205 }
771206 0000 0210 0019 1.0 A MF (0000-0050). T.
771206 0210 0510 0323 0.6 A
771207 1950 0100* 2003 0.5 A
771208
771209 0710 1040 0755 0.8 A
771210 2200 0330* 0232 0.7 A t
771211 0820 0900 0837 0.8 B '
771211 1350 0000* 2106 3.0 F L, MF W ST EDGE (2100-2210). i
771212 0000 0800 0234 2.8 E L, MF(0115-0620). q
771212 1400 0500* 2135 1.6 F 2 MF(2132-2200)&(0120-0300).
771213 1100 1320 1235 0.8 A
771213 1420 2100 1922 2.1 F L, MF W 4 EDGES,(1750-2100).
771214 0040 0340 0047 1.3. D MF,T(0150-0340).
771214 0550 0940 0640 1.6 E
771214 1105 1520 1225 1.0 AL, MF(1200-1305).
771214 2000 0400* 2342 0.5 A
771215 1130 2000 1418 1.3 A L, MF(1320-2000).
771216 1620 2319 2155 1.8 F L W 2 STEPS, MF(2153-2220).
771217 0000 1000 0506 2.4 E EXTENDED P.O. STRUCTURED ABSN.
771218
771219
771220
771221 2000 6200* 2137 1.3 F 2 MF(2100-2200)8(0010-0050).
771222 2330 0140* 0041 0.8 A BROAD ST.
771223
771224
771225 1800 0600* 2135 0.5 B SMALL FEAS.
771226 1800 2100 1901 0.8 A CUSP.
771226 2320 0100* 2333 0.6 A
771227
771228 1730 2210 2015 3.9 F L, MF(2000-2210).
771228 2320 0100* 2327 0.6 A
771229 0130 0700 0442 1.5 A BROAD ST.
771230
771231
780101
780102 0120 0600 0343 1.2 A SYM DIP.
780103 1700 0000* 2126 1.4 C SHARP PEAKS 2030 TO 2200.
780104 0000 0250 0059 0.9 B ST @0020 TO 0120.
780104 0250 1250 0425 3.3 E IRREG FEA. MF(0250-1050),T W 2 SH PEAKS.
780104 1250 1600 1502 6.9 F L, MF(1502-1600). SHARP EDGE W ST.
780104 1600 2100 1709 2.3 E IRREG FEAS. 1
780104 2100 2340 2209 0.8 A
780104 2340 0330* O116 3.5 E IRREG ABSN.
780105 0330 0730 0535 2.8 E SMALL SCALE ST.

41



THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB

771018 1620 1700 1632 0.6 Al.

771018 1750 2020 1917 3.7 F DRAMATIC. 3 SHARP PEAKS. L&T. SMALL F-EDGE.

771018 2020 2250 2153 4.3 F DRAM,BUT SL LESS SHARP THAN USUAL FOR F EDGE.

771018 2250 0130* 2256 3.1 F PERLOD OF HIGHLY STRUCTURED ABSN.

771019 0130 0230 0201 4.2 C UNUSUAL,CONTAINS REVERSE F EDGE (RAPID DECAY)

771019 0230 0650 0235 2.3 F PER OF IRREG ABSN.,STARTING W SHARP EDGE.2.3DB@0330
771019 0650 1500 0802 3.1 E ST.MF(0650-1005);T.

771019 1910 2010 1934 0.8 A 1.

771020 0620 0820 0712 0.5 A

771020 0820 1320 0950 0.8 A 2 PEAKS.0.8DB@ 1225.

771020 1610 1710 1624 0.6 B CUSP.

771020 2300 0010* 2325 1.8 C SINGLE DIP,NO ST.

771021 0200 0300 0227 0.6 A

771021 1700 1850 1838 0.8 A L,M.F(1815-1850)1.

771021 2200 2310 2242 0.9 B

771021 2310 0130* 0124 3.2 C L3MF(0000-0110);T. SINGLE FEATURE.

771022 0130 1250 0923 3.6 E EXTENDED PERIOD OF IRREG.ABSN.ST. |
771022 1745 1850 1829 0.9 B L3MF(1815~1850) |
771022 1850 2110. 1929 1.3 C V IRREG A. q
771022 2110 0030* 2156 2.5 C L3MF(2137-2330);T. ST.

771023 0140 0405 0248 1.3 D L3MF(0229-0405)
771023 0405 0850 0600 0.9 A MF(0405-0715);T.

771023 0850 1250 1034 1.0 A
771023

771024 0110 1650 0326 0.9 A EX PER OF # STEADY ABSN #0.5DB.V BROAD,SHALL PEAK |
771024 2315 0250* 0000 1.2 C L,MF(2330-0005)5T. |
771025 1840 0130* 2054 1.2 C MF(1840-2015);T (SOMEWHAT IRREG.) |
771026 0630 0915 0745 0.7 A |
771026 0915 1230 1216 0.7 A CHART ENDS 1229.NEW CHART BEGINS 1241. |
771026 2350 0430* 0120 1.3 F L,EDGE@0028 ,MF(0028-0300),T.0.4DBG@2428. |
771027 1000 1210 1028 1.5 C V.DISTORTED BY 1.TIMES NOT PRECISE MF(1000-1055),T. |
771027 1915 2050 1931 2.0 F ?PULSATIONS. |
771027 2050 2205 2125 1.0 A |
771027 2305 0120* 2308 5.5 F MF(2305-2415);1IRREG.T. |
771028 0120 0430 0213 4.9 E LGE FEA W MUCH V SHARP ST. |
771028 0500 0600 0517 2.0 C |
771028 0600 0705 0617 2.3 C I
771028 0705 1030 0739 1.3 C LITTLE ST.MF(0705-0830),T. |
771028 1705 2230 1907 4.4 F L W ST,MF(1820-2000) W DRAMATIC ST,T W A-TYPE DIP. |
771028 2300 0015* 2340 0.4 A |
771029 0050 0320 0131 0.6 A MF(0050~0230),T. |
771029 0330 0800 0552 1.0 A L,MF(0515-0710),T. |
771030 1745 1945 1845 1.6 C L,MF(1820-1905),T. |
771030 1945 2055 2009 0.9 B STARTS W TINY EDGE. |
771030 2055 2230 2059 1.2 F SMALL EDGE. }
771031 0030 0230 0149 0.7 A L,MF(0140-0220),T. |
771031 0230 0530 0338 0.9 A |
771031 1120 1440 1244 0.9 A |
771101 2320 0315* 0027 0.5 A |
771102 1930 2100 2036 0.7 A |

771

771104 1610 1630 1619 0.
771104 1720 0030* 2051 0. PERLOD OF IRREGULAR ABSN.
771105 0030 0730 0135 2 MF BROAD ST. T(0400-0730).
7711 0

05 1000 1400 1129

UEOD
Drip we

t
|
|

39



THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT B

790527 0720 1202 0812 ET.

790527 1208 1326 1228 A SLIGHT ST.

790527 1753 1852 1818 BL.

790527 2232 0053* 0048 C SLIGHT 1.

790528 1750 1826 1808 B CUSP.

790528 2000 0126* 2156 E

790529 2046 2207 2138 F SPIKE @ MAX.

790530 0118 0136 0122 B QUITE FAST ONSET.

790531 NO DATA

790601 NO DATA

790602 NO DATA

790603 NO DATA

790604 NO DATA

790605 NO DATA

790606 NO DATA

790607 NO DATA

790608 NO DATA

790609 NO DATA

790610 NO DATA

790611 NO DATA

790612 NO DATA

790613 NO DATA

790614 NO DATA

790615 NO DATA

790616 NO DATA

790617 NO DATA

790618 NO DATA

790619 NO DATA

790620 NO DATA

790621 NO DATA

790622 1600 1850 1650 Al.

790623 2124 2141 2200 B CUSP. I @ END.

790624

790625 1120 1356 1234 A SL ST.

790625 1938 2000 1949 B CUSP

790626 1052 1113 1104 A SHORT FEA.

790626 1139 1413 1302 A ST.

790626 1458 1600 1509 B MINI F ST.

790626 1758 2034 2006 E

790626 2034 2132 2049 B I @ START.

790626 2148 2316 2216 cl

790627 0031 U144 0108 A I @ END.

790627 0215 0237 0227 Al.

790628

790629

790630

790701

790702 0213 0348 0234 C LITTLE ST.

790703 2154 2233 2159 B

790704 0218 0255 0243 C SHALLOW CUSP.

790705 2139 2159 2146 BNO ST.

790706 1052 1225 1115 A

790706 2240 2254 2247 C 1 SMALL PEAK.

790707

790708 2042 2138 2053 B

64



THE ABISKO CATALOG

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT
751214 1340 1830 1545 C L,SYM MF(#1HR),T
751214 2045 2310 2145 A
751215 0100 U410 0220 C L,SL ASYM MF(#1HR),T
751216 Y100 0530 0310 C L,ASYM MF(#1.5HR),T.
751216 0300 1130 1u12 A L,WK LRREG FEA
751216 1510 1610 1520 A
751216 2000 0245* 2320 A L,MF 2310-2430 T
751217 0300 0520 0355 Cc MF,T
751217 1630 1730 1645 A
751217 2115 2315 2210 B L, SHORT MF 15 MINS T
751216 0215 0315 U245 A
751219
751220
751221 1500 1530 1510 B
751221 1305 2010 1916 B
751222 VO0O 0230 0140 A
751223
751224 2030 0210* 2100 A TRACE DEPRESSED, FEW MINOR FEAS.
751225 0530 0900 0555 B SERIES OF TYPE B FEAS. 0.8DB @ U80U
751225 1950 0120%* 0010 C LONG L W MINOR FEAS.,MF W ST.
751226 0510 0700 0600 A SLIGHTLY IRREG
751226 0840 1120 0905 D
751226 1215 1320 1227 B U.6 DB @ 1313
751226 1940 2130 1958 C CONSIDERABLE ST, ONE V SHARP PEAK.
751226 2130 2305 2322 A
751226 2305 0050* 2320 Cc MF,T
751227 V055 0150) 0120 A
751227 0450 1115 0920 E LW SMALL FEAS, MF(#4HRS) W LITTLE ST.
751227 1115 1850 1702 A 2 SMALL FEAS IN THIS PERIOD. 1600, 1.UDB.
751227 1850 2240 1950 F L(#40MINS) W 1 SHARP PEAK,MF W SHARP ONSET @ 1935
751227 2240 2330 2240 F LITTLE Sst.
751227 2320 0010* 2320 F SOME ST
751228 0010 0300 0050 C MF W ST, T
751228 0400 0815 0620 E L(#1HR), FOLL BY PERLOD OF WK ABS.
751229 0030 0145 O100 A
751229 0545 0745 0650 A IRREG TRACE,ST.
751229 0745 1030 0930 A IRREG TRACE, ST.
751229 1030 1200 1110 A IRREG TRACE
751229 1315 1445 1410 A IRREG TRACE
751230 0040 0210 0130 B CUSP
751230 0415 0540 0515 AL
751230 1000 1220 1055 A WK,1RREG ABS.
751230 1415 1640 1440 A
751231
760101
760102
760103 1257 1320 1203 B
760103 1900 0100* 2001 F L(BROAD FEA W SOME ST),MF(2U00-2100), T (#0.8DB) \
760104 1940 2140 2030 B T
760105 1100 1200 1130 A TRACE SOMEWHAT DISTURBED
760105 1200 1440 1245 A
760105 2045 2315 2240 B MF(2230-2300),T
760106 0330 0405 0415 A
760106 2100 2220 2015 F ONSET NOT V SHARP, T. 1
760106 2245 O115* 2315 A T



THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT D
780830 0059 0122 0118 0.8 B 1 SMALL FEA.
780830 0147 0332 0230 1.7 C 1 MAIN FEA.
780830 0400 1002 0539 2.6 E
780830 1028 1504 1134 1.6 E SMALL FEAS.
780830 1620 1859 1738 2.3 C 2 MAIN PEAKS.
780830 2015 2224 2041 2.6 C 1, MAINLY @ END.
780830 2234 0024* 2341 2.3 CT.
780831 0105 0412 0131 1.4 E SMALL PULNS & I.
780831 0525 0901 0650 2.5 E 1 LONG FEA W SL ST.
780831 0912 0951 0927 1.8 C 1 CUSP.
780831 0954 1119 1018 2.8 C ST IN T.
780831 1223 1245 1236 0.5 B 1 MINOR FEA.
780831 0102 0117 0105 1.1 F MINI FEA.
780831 1709 1834 1753 1.9 C SLOW ONSET.
780831 1846 1951 1903 1.3 F 1ST PEAK @1848UT,0.8DB. I.
780901 0149 0215 0204 0.7 B 1. GRAD ONSET.
780901 0241 0422 0351 1.4 E SL 1. 2 SHALLOW FEAS.
780901 0428 0647 0509 2.4 E 1 MAIN FEA W VERY SL ST.
780901 0659 1013 0804 3.2 E 1 MAIN FEA W SMALL CUSP @ END.
780901 1228 1239 1229 0.9 B MINI D.
780901 1242 1424 1300 0.8 A T.
780901 2053 2114 2106 1.1 C SL I.
780901 2209 2331 2235 1.6 CT & 1.
780902 0256 0537 0334 2.1 C 1 MAIN FEA W T.
780902 0703 1150 0749 3.2 E 1 FEA W ST, & 1 SHALLOW FEA.
780902 1210 1604 1323 1.1 E SHALLOW, LONG FEA.
780902 1800 1908 1837 1.3 C 3 FEAS. SL ST 1.
780902 2152 2307 2158 1.6 F STEPPED ONSET & T.
780903 0316 0820 0418 2.1 E 1 MAJOR FEA W ST & 1 @ 0630.
780903 1018 1450 1156 0.8 A SL ST.
780903 1507 1546 1525 0.7 B 2 MINOR DIPS.
780904 1200 1420 1234 0.7 A
780904 1740 1758 1746 0.7 B CUSP.
780904 1807 1837 1820 0.5 B SMOOTH FEA.
780904 1944 2024 1950 0.7 B I. 2 SMALL FEAS.
780905
780906 0047 0228 0113 0.6 A 2 SL DIPS.
780906 0827 0906 0851 2.3 C SMOOTH,] STEP FEA.
780906 1325 1429 1358 1.0 BL&T-.
780907 0844 1014 0949 0.9 A l.
780908 0002 0131 0127 1.3 C FAST DECAY.
780908 0131 0203 0200 1.1 C SMALL SPIKE @ END.
780908 0203 0223 0219 1.7 C FAST DECAY.
780908 0227 0816 0357 5.1 E IRREG ABSN. MANY SHARP PEAKS.
780909 1459 1554 1517 0.8 B MINI ST.
780909 1649 1830 1749 0.5 A 2 SLIGHT DLPS.
780909 1918 2028 1922 1.7 Fl.
780909 2033 2223 2051 0.8 C 1 FEA W 1RREG ABSN.
780909 2320 U211* 2342 2.2 E QUITE FAST ONSET.
780910
780911 1407 1527 1425 2.2 C DOUBLE CUSPED EVENT.
780911 2021 2238 2038 1.2 C
780912 0216 0354 0257 1.1 A (NEAREST CODE).
780912 0826 1052 1030 1.4 E 2 GRAD FEAS. I @ END.
780912 2210 2324 2243 0.8 B SL 1.

51

|
|

'


THE ABISKO CATALOG (Continued)
DATE START END MAXIMUM TYPE COMMENTS

57

UT ut UT D

790104 1515 1609 1543 0.5 B

790104 1724 1924 1831 2.7 F 2.5DB @ 1735UT.

790104 2028 2054 2045 0.7 B

790104 2234 0022* 2240 1.7 C 1.7DB @ OUL4UT.

790105 0033 0353 0110 1.7 E

790105 0410 0457 0440 1.3 €

790105 0509 0753 0540 3.6 E

790105 1841 1904 1901 0.4 B

790105 2243 2344 2330 1.0 C

790106 0040 0153 0103 1-1 C LITTLE st.

790106 0158 0254 0212 1.6 C Ll.

790106 0258 0434 0348 0.8 B SL ST.

790107 1530 1650 1610 1.6 C 1 SHORT PEAK.

790107 1909 1939 1934 0.6 B Ll.

790107 1939 1958 1953 0.7 B

790107 2044 2339 2142 1.0 E 0.8DB @ 2304UT. SOME I.

790108 0650 0752 0701 0.5 B LONG T.

790108 2352 0050* 0033 0.7 B

790109 2155 2218 2201 0.4 B

790110

790111

790112 0242 0330 0317 1.0 B

790112 0334 0630 0340 1.2 E VERY SL 8ST.

790112 2143 0208* 0012 2.3 EL & T.

790113

790114

790115 1846 2305 1931 2.9 F 2.8DB @ 1937UT. L. 3 SHARP EDGES.

790115 2308 0156* 0009 U.9 A ST.

790116 0354 0703 0528 1.0 E SL ST. SMOOTH FEA.

790117 1816 1841 1830 0.4 B SL I.

790117 1928 2134 2050 0.6 A SOME ST.

790117 2144 0226* 0031 1.0 E LONG B.

790118 1838 1919 1845 0.7 BD ST.

790118 1938 2206 2054 0.6 A SL ST.

790118 2228 0735 0424 4.6 E 4.6DB @ 0433UT. MF(0330-0600).

790119 1950 2046 2016 0.4 A |

790119 2228 0114* 2302 1.2 E T. 1 SHORT PEAK @ 2302. |

790120 . |

790121 0204 0326 0231 0.7 B SYM FEA. |

790122 1900 2040 1956 3.0 C ENDS IN L. |

790122 2219 0110 2323 4.1 ET. t

790123 0652 0821 0744 0.8 B |

790123 1856 2015 1903 1.8 C QUITE FAST ONSET. |

790123 2204 2258 2208 0.8 B i

790124 0153 0433 0409 1.7 BE 2 FEAS. f

790124 0434 0546 0524 0.6 A |

790124 0604 0652 0623 0.5 A SHORT EVENT. |

790124 0846 1002 0916 1.4 C |

790124 1008 1045 1020 0.6 B i

790124 1111 1240 1158 0.4 B SL I. |
f

790124 1248 1348 1312 0.7 B f

790124 1355 1352 1429 0.5 B |

790124 1941 2009 1956 0.4 B |

790124 2028 2048 2032 0.6 A SHORT EVENT. |

790125 0128 0211 0153 0-6 BL. |
'
|
|
|


THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB
760201 0245 0430 0250 1.3 B SMALL FOR TYPE-C.T.
760201 0900 1330 1100 2.0 E LARGE FEA
760201 1410 1530 1440 2.0 D INTERFERENCE. 1.8DB@ 1420.
760203 1350 1450 1405 1.2 A MF+SMALL SECONDARY PEAK.
760203 2115 2215 2115 2.3 F CLASSIC F ONSET RAPID RECOVERY
760204 0000 0300 0055 1.9 C LGE TYPE A FEATURE. SOME ST.
760205 1415 1520 1420 1.0 B ST.CUSP & ROUNDED FEATURES.
760205 2020 2150 21062 2.0 C CUSP.ST.
760205 2300 0130* 2340 2.3 C LGE TYPE A.T.SLIGHT ST.
760206 0310 0530 0350 1.2 A MF(0310-0420).T.
760207 0606 G700 0640 0.4 A QDC INACCURATE DUE TO I
760207 1005 1450 1150 1.9 F L 1000-1100
760207 2000 2300 2205 0.6 B SMALL FEAS
760208 0100 0320 0115 1.5 D ST.RATHER WEAK ABSN FOR TYPE D.
760208 2200 2300 2230 1.3 C ONSET MISSING DUE TO FAULT.
760209 0020 0500 0100 E LGE BROAD FEATURE,DECREASING AFTER #0210;2.U0DB@020U0
760209 0500 1130 0630 E LONG PER OF ST ABSN.2.0DB@0850.
760209 1200 1500 1230 C D-TYPE ONSET
760209 1500 1700 1555 B PER OF IRREG ABSN,GEN WEAK,BUT 1 SHP B-TYPE FEA.
760209 1930 0230* 2200 F PER OF H ST ABSN,W F-TYPE EDGES.L.EDGES @ 2120,2345
760209 0310 0450 0355 C A-TYPE SYMMETRY.ST.
760210 U605 0830 0615 Cc TOO MUCH ST.TO BE D. .
760210 0840 1240 0945 C LARGE FEATURE,ST.
760210 1310 1600 1430 C PER W 2 UNUSUALLY SHARP PEAKS.GEN LEVEL ABSN<1.0DB.
760210 1920 2330 2125 E PER OF ST ABSN.ONE SHARP EDGE.(#2125).
760210 2330 0100* 2340 4.6 C ONSET HAS A BROAD PEAK.
760211 1060 1750 1240 1.8 E BROAD PEAKS. L.FROM 1000-1200.ST.1.7DB@1505.
760211 2020 0030% 2230 1.0 A ST.
760212 0340 0710 0420 0.8 AT
760212 0710 1350 0940 2.0 E LGE FEATURE,BROADLY SYMMETRICAL,ST.
760212 1400 1530 1415 0.5 A
760212 2040 O000* 2158 1.1 E L.ST.A-TYPE SYM.OVERALL,BUT LGE.SCALE ST.
760213 0000 0415 0140 6.5 F L,MF(0140-0300).T. REMARKABLE FEATURE.
760213 0415 0640 0550 1.8 C UNUSUAL IN THAT RECOVERY IS FASTER THAN ONSET.
760213 1050 1140 1120 0.4 A SMALL FEATURE.
760213 1215 1440 1320 1.0 A ST.
760213 1540 1715 1640 2.2 C SHARP PEAKS.
760213 2040 0000* 2240 3.2 F EDGE AT 2220. 2.2DB@ 2220.
760214 0300 0800 0450 4.4 E L,LGE.SINGLE FEATURE.
760214 1240 1550 1405 2.1 C IRREG.FEATURE. MUCH ST.1.7DB@1540.
760214 2100 2220 2120 0.8 A
760215
760216 0230 1230 0340 1.8 A UNUSUAL FEA NO ST EXTENDED DEPRESSION ONSET 1.5HRS.
760216 1710 1830 1755 1.2 B (POSSIBLY A ST.)
760217 1210 1300 1240 0.8 A
760217 2340 0030* 2350 1.8 C CUSP.
760218 0240 0446 0330 1.1 A WEAK,SLOWLY VARYING ABSN.
760218 0820 0930 0850 1.3 A
760218 0930 1215 1040 2.1 C LGE.TYPE A.
760218 1330 1520 1350 0.9 B IRREGULAR ABSN.
760218 2020 2145 2115 1.6 B LGE TYPE B.
760218 2310 0140* 0040 0.7 A
760219 0210 0340 0240 1.4 A
760219 0515 1205 0850 3.3 E 2.8DB@0605.
76U219 1205 1500 1350 1.2 B SERLES OF SMALL FEATURES.

il

a



WORLD DATA CENTER A
for
Solar-Terrestrial Physics

Report UAG - 84

CATALOG OF AURORAL RADIO ABSORPTION
During 1976 - 1979 at Abisko, Sweden

by

J. K. Hargreaves, C. M. Taylor and J. M. Penman
Environmental Sciences Department
University of Lancaster
Bailrigg, Lancaster, England

July 1982 ""

U.S. DEPARTMENT OF COMMERCE
NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION
ENVIRONMENTAL DATA AND INFORMATION SERVICE
Boulder, Colorado, USA 80303


THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB
770602 2120 0020* 2150 1.7 CL
770603
770604
770605
770606
770607 1950 2010 2000 U.8 BL
770608
770609 2240 U015* 2305 1.0 C 2 SMALL FEAS
770610
770611 0420 0600 0000 0.5 A I.
770612 0245 0300 0249 0.6 A WEAK,I.
770613 1900 1950 1934 0.4 A 2 WEAK FEATURES
770614 0050 0230 O1ll 2.3 C SINGLE FEATURE
770614 0300 1100 0350 0.6 B
770615 1100 0030* 1410 1.0 A EXTENDED PERIOD OF SV ABSN. 1.0 DB@1800
770616
770617
770618 0620 1030 0740 2.9 D L,MF(0710-0840),T.LITTLE ST.
770618 1750 1900 1810 1.0 B
770618 1920 2030 1950 2.2 F L,MF(1945-2000),T.ST. 1.8 DB@1945
770618 2250 0030%* 2315 0.9 B
770619 0550 0830 0615 1.5 A
770619 1030 1200 1042 0.40.7 A
770620 0010 0230 0040 1.8 C CUSP
770620 0630 0830 0720 0.6 A
770620 1245 1600 1330 1.5 A LARGE
770621 0705 0730 0720 0-4 Al
770621 1310 1415 1343 0.6 A
770622 1805 1905 1853 1.5 C L,CUSP
770623 0210 0410 0253 2.4 C SINGLE FEA, 2PEAKS,SMOOTH
770624 0400 0530 0411 0.6 Al
770624 0600 0915 0829 1.2 A
770625 0600 0730 0629 0.8 A PERIODIC 1 ?
770626 0015 0140 0114 U-4 AL
770626 1010 1400 1021 0.8 A SV ABSN
770627 0010 0245 0059 1.3 C CUSP
770628 0605 0730 0651 0.8 A
770628 0945 1330 1055 1.0 AT
770628 1910 1940 1926 0.6 A L TO NEXT FEA
770628 1940 0030* 2230 1.5 E LRREGULAR FEA
770629 0130 0230 0202 1.2 A IRREG
770629 0440 0520 0500 0.5 A
770630 1200 1500 1425 0.7 A
770630 1910 2100 1930 0.9 A
770630 2330 0240* 0053 1.3 A LARGE,START CONFUSED BY I.
770701 0450 0730 0600 0.7 A
770701 0730 0945 0748 0.6 A SOMEWHAT LRREG
770701
770701 1450-1840 1458 0.7 A V SMOOTH
770702 0040 0310 0109 0.9 A 0.70DBG0217
770702 0420 0620 0450 0.5 A
770703
770704 0900 1040 0957 0.5 A
770704 1105 1320 1200 0.8 A
770704 2300 0100* 0116 2.1 C CUSP

32

|

——



UAG-56

UAG-57

UAG-58

UAG-59

UAG-60

UAG-61

UAG-62

UAG-63

UAG-64

UAG-65

UAG-66

UAG-67

UAG-68

UAG-69

UAG-70

UAG-71

UAG-72

UAG-73

UAG-74

“Iso-intensity Contours of Ground Magnetic H Perturbations for the December 16-18, 1971,
Geomagnetic Storm," Y. Kamide, Cooperative Institute for Research in Environmental Sciences,
University of Colorado, Boulder, CO, April 1976, 37 pp, $1.39.

"Manual on Ionospheric Absorption Measurements," edited by K. Rawer, Institut fur Physikalische
Weltraumforschung, Freiburg, GFR, June 1976, 302 pp, $4.27.

"ATS6 Radio Beacon Electron Content Measurements at Boulder, July 1974 - May 1975," by R.B. Fritz,
NOAA Space Environment Laboratory, Boulder, CO, September 1976, 61 pp, $1.04.

“Auroral Electrojet Magnetic Activity Indices AE(11) for 1974," by Joe Haskell Allen, Carl C.
Abston and Leslie D. Morris, National Geophysical and Solar-Terrestrial Data Center, Boulder, CO,
December 1976, 144 pp, $2.16.

"Geomagnetic Data for January 1976 (AE(7) Indices and Stacked Magnetograms)," by Joe Haskell
Allen, Carl C. Abston and Leslie D. Morris, National Geophysical and Solar-Terrestrial Data
Center, Boulder, CO, July 1977, 57 pp, $1.07.

"Collected Data Reports for STIP Interval II 20 March - 5 May 1976, edited by Helen E. Coffey and
John A. McKinnon, World Data Center A for Solar-Terrestrial Physics, Boulder, CO, August 1977, 313
pp, $2.95.

“Geomagnetic Data for February 1976 (AE(7) Indices and Stacked Magnetograms) ," by Joe Haskell
Allen, Carl C. Abston and Leslie D. Morris, National Geophysical and Solar-Terrestrial Data
Center, Boulder, CO, September 1977, 55 pp, $1.11.

"Geomagnetic Data for March 1976 (AE(7) Indices and Stacked Magnetograms)," by Joe Haskell Allen,
Carl C. Abston and Leslie D. Morris, National Geophysical and Solar-Terrestrial Data Center,
Boulder, CO, September 1977, 57 pp, $1.11.

"Geomagnetic Data for April 1976 (AE(8) Indices and Stacked Magnetograms)," by Joe Haskell Allen,
Carl C. Abston and Leslie D. Morris, National Geophysical and Solar-Terrestrial Data Center,
Boulder, CO, February 1978, 55 pp, $1.00.

"The Information Explosion and Its Consequences for Data Acquisition, Documentation, Processing,"
by G.K. Hartmann, Max-Planck-Institut fur Aeronomie, Lindau, GFR, May 1978, 36 pp, $0.75.

"Synoptic Radio Maps of the Sun at 3.3 mm 1970-1973," by Earle B. Mayfield and Fred I.
Shimabukuro, Aerospace Corp., El Segundo, CA, May 1978, 30 pp, $0.75.

“lonospheric D-Region Profile Data Base, A Collection of Computer-Accessible Experimental Profiles
of the D and Lower E Regions," by L.F. McNamara, Ionospheric Prediction Service, Sydney,
Australia, August 1978, 30 pp, $0.88 (microfiche only).

“A Comparative Study of Nethods of Electron Density Profile Analysis," by L.F. McNamara,
Ionospheric Prediction Service, Sydney, Australia, August 1978, 30 pp, $0.88 (microfiche only).

“Selected Disturbed D-Region Electron Density Profiles. Their relation to the undisturbed D
region," by L.F. McNamara, Ionospheric Prediction Service, Sydney, Australia, October 1978, 50 pp,
$1.29 (microfiche only).

"Annotated Atlas of the H-alpha Synoptic Charts for Solar Cycle 20 (1964-1974) Carrington Solar
Rotations 1487-1616," by Patrick S. McIntosh, NOAA Space Environment Laboratory, Boulder, CO,
February 1979, 327 pp, $3.50.

"Magnetic Potential Plots over the Northern Hemisphere for 26-28 March 1976," A.D. Richmond, NOAA
Space Environment Laboratory, Boulder, CO; H.W. Kroehl, National Geophysical and Solar-Terrestrial
Data Center, Boulder, CO; M.A. Henning, Lockheed Missils and Space Co., Aurora, CO; and Y. Kamide,
Kyoto Sangyo University, Kyoto, Japan, April 1979, 118 pp, $1.50.

“Energy Release in Solar Flares, Proceedings of the Workshop on Energy Release in Flares, 26
February - 1 March 1979, Cambridge, Massachusetts, U.S.A.," edited by David M. Rust, American
Science and Engineering, Inc., Cambridge, MA, and A. Gordon Emslie, Harvard-Smithsonian Center for
Astrophysics, Cambridge, MA, July 1979, 68 pp, $1.50 (microfiche only).

“Auroral Electrojet Magnetic Activity Indices AE(11-12) for January - June 1975," by Joe Haskell
Allen, Carl C. Abston, J.E. Salazar and J.A. McKinnon, National Geophysical and Solar-Terrestrial
Data Center, NOAA, Boulder, CO, August 1979, 114 pp, $1.75.

"ATS-6 Radio Beacon Electron Content Measurements at Ootacamund, India, October - July 1976," by
$.D. Bouwer, K. Davies, R.F. Donnelly, R.N. Grubb, J.E. Jones and J.H. Taylor, NOAA Space
Environment Laboratory, Boulder, CO, and R.G. Rastogi, M.R. Deshpande, H. Chandra and G. Sethia,
Physical Research Laboratory, Ahmedabad, India, March 1980, 58 pp, $2.50.

a

|
'
|
f


THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB

760725 2102 2300 2102
760726 2320 0300%* 0210

1. F-EDGE CONFUSED W AUTOMATLC TIME-MARK.T, 2130-2300.

l.
760726 2150 2210 2207 0.

oO.

1.

L,1.3DB 0210

760727 1108 1950 1316
760727 2000 2200 2021

PERIOD OF IRREG.ABSN.WEAK FEATURES.NEAR 1950.
MF2000-2030;T.

NUON
OPEps

760727 2345 0110* 0043
760728 0110 0530 0200

2 SINGLE FEA.,ASYMM.CUSP,PREC.BY L W I IN IT.

1
760728 0620 1300 0700 1

2

3

SCOOP, 0620-07303T,
C-TYPE PEAKS.
PEAKS AND ST. 3.7DB@0155.

760728 1440 1930 1755
760729 0130 0445 0235

eauro
aoapa

760729 0900 1800 1146
760729 1800 0350%* 1950
760730 0350 0555 0415
760730 0555 1020 0616
760730 1150 1450 1224

GEN.LEV.DEC.TO 0.6DB,BUT TRACE HAS SEV.BROAD PEAKS.
GEN.LEVEL#1.3DB.CUSP AT #1950,BROAD PEAKS LAT.HALF.
ST.

LEVEL RECOVERS TO#1.4DB BETWEEN FEATURES.ST.
ST+SHARP PEAK.T,#1315-1450. i

t
,
t
i]

760730 1940 0100* 2219
760731 0640 1500 0855
760731 1500 2020 1745
760731 2020 2250 2200
760801 0540 0640 U608

PERIOD OF SLOWLY-VARYING ABSN W SOME SMALL FEATURES
ST.MFO800-0920,L.,T.

PP>>> ACUTE

L, MF (0600-0640).

760801 1500 2320 2107
760802 0205 0345 U250
760802 0630 0715 0650
760802 0830 0950 Og9il
760803 0000 1445 0613

STRUCTURED L 1.7DB EDGES @ 20198 2107.

0
1
iv)
0
0
2
1
0
0
2

760803 1510 1900 1623
760803 2000 2145 2034
760804 0130 0240 0212
760804 1410 1805 1549
760805 0205 0460 0301

L, MF (1550-1650). T.
L, MF (0200-0240).

760805 1300 1530 1428
760805 1530 1740 1634
760806 0250 0430 0319
760806 1300 1930 1536
760807 0915 1200 1000

L, SMALL SINGLE ROUNDED PEAK. T.

SOMEWHAT IRREG.

760807 1410 1930 1553
760807 2015 2230 2260
760808 O110 0210 0143
760809 0650 1020 0742
760809 1230 1400 1314

EDGE @ 2200.

2 BROAD FEAS ST ON 2ND. FEA.

UeAwWE UENwWE CRON UTNADE TEAEN

Orr E> PEPME> POPES PROP SEPA Merame

roece CHENG CNORC CONFKO COFFFHY

760809 2200 0045* 2345 7 2 DIPS. F
760810 0105 0740 0400 2.9 IRREG L, MF (0330-0615), T. t
760811 0000 0400 0132 1.3 CUSP L&T. 1
760811 0610 1010 0730 1.3

760811 1010 1410 1223 0.8

760811 1700 2220 1943 0.9 t
760811 2320 0700 0115 0.8 '
760812 0700 0830 0722 0.8 |
760812 0900 1350 0918 0.8 i
760812 1815 2030 1907 1.0 MF (1815-1930), T.

760813

760814 1336 2020 1442 2.2 C L, MF (1400-1450), T WITH SMALL FEA @1545. |
760815 0030 1230 0521 0.8 A t
760815 2050 2115 2055 0.5 B

760816 1400 1550 1421 1.4 C MF (1400-1450),T.

20



WORLD DATA CENTER A

National Academy of Sciences

2101 Constitution Avenue,

WW

Washington, D.C. 20418 USA

World Data Center A consists of the Coordination Office
and the following eight Subcenters:

GLACIOLOGY (Snow and Ice)

World Data Center A: Glaciology
(Snow and Ice)

Cooperative Inst. for Research in
Environmental Sciences

University of Colorado

Boulder, Colorado 80309 USA

[Telephone: (303) 492-5171]

MARINE GEOLOGY AND GEOPHYSICS
(Gravity, Magnetics, Bathymetry,
Seismic Profiles, Marine Sediment
and Rock Analyses):

World Data Center A for Marine
Geology and Geophysics

NOAA, D64

325 Broadway

Boulder, Colorado 80303 USA

[Telephone: (303) 497-6487]

METEOROLOGY (and Nuclear Radiation)
World Data Center A: Meteorology
-National Climatic Center

Federal Building

Asheville, North Carolina 28801 USA
[Telephone:

OCEANOGRAPHY

World Data Center A: Oceanography

National Oceanic and Atmospheric
Administration

2001 Wisconsin Avenue, NW

Page Bldg. 1, Rm. 414

Washington, D.C. 20235 USA

[Telephone: (202) 634-7249]

COORDINATION OFFICE
World Data Center A

National Academy of Sciences

2101 Constitution Avenue,

WW

Washington, D.C. 20418 USA

[Telephone:

(704) 258-2850, ext. 381]

(202) 334-3359]

ROCKETS AND SATELLITES

World Data Center A:
Satellites

Goddard Space Flight Center

Code 601

Greenbelt, Maryland 20771 USA

[Telephone: (301) 344-6695]

ROTATION OF THE EARTH

World Data Center A:
of the Earth

U.S. Naval Observatory

Washington, D.C. 20390 USA

[Telephone: (202) 254-4547]

Rockets and

Rotation

SOLAR-TERRESTRIAL PHYSICS (Solar and
Interplanetary Phenomena, Inospheric
Phenomena, Flare-Associated Events,
Geomagnetic Variations, Aurora,
Cosmic Rays, Airglow):

World Data Center A

for Solar-Terrestrial Physics
NOAA, D63
325 Broadway
Boulder, Colorado 80303 USA
[Telephone: (303) 497-6323]

SOLID-EARTH GEOPHYSICS (Seismology,
Tsunamis, Gravimetry, Earth Tides,
Recent Movements of the Earth's
Crust, Magnetic Measurements,
Paleomagnetism and Archeomagnetism
Volcanology, Geothermics) :

World Data Center A

for Solid-Earth Geophysics
NOAA, D62
325 Broadway
Boulder, Colorado 80303 USA
[Telephone: (303) 497-6521]

World Data Centers conduct international exchange of geophysical observations in accordance with the

principles set forth by the International Council of Scientific Unions.

United States under the auspices of

the National Academy of Sciences.

WOC-A is established in the
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).

Inquiries and communications concerning data in

specific disciplines should be addressed to the appropriate sub center listed above.


THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS

UT UT UT DB
780307
780308
780309
780310 0844 0952 0924 1.2 C LEVEL DIST BY L.
780311
780312
780313 0418 0700 0508 0.9 A SLIGHT ST.
780313 0945 1250 1158 1.4 EL
780313 2036 2228 2055 2.0 F L&T
780314 0152 0402 0210 0.6 A DOUBLE FEA.
780314 0703 0816 0736 1.8 C1
780314 1649 1800 1724 0.6 A
780315 0126 0342 0140 1.5 C ST
780315 0414 0635 0505 1.6 C ST
780316 0000 0115 0032 3.0 C QUITE FAST ONSET.
780316 0131 0229 0201 0.9 B
780316 0239 0439 0305 0.7 B IRREG ABSN.
780316 0453 0547 0528 2.0 C1
780316 0640 1020 0703 2.1 E .
780316 1729 1819 1734 2.1 E FAST ONSET.
780316 1849 2109 1853 1.0 C FAST ONSET
780316 2135 2238 2157 0.8 A
780316 2332 0230* 2337 3.9 E IRREG ST
780317 0328 0618 0452 4.8 E END OF CHART.
780317 0629 0722 0651 0.9 AT
780317 0808 1000 0907 1.1 C ST WI.
780317 1333 1409 1353 0.8 B I @ START.
780317 1704 0055* 2200 1.7 E IRREG ABSN
780318 0101 1017 0349 3.1 E PROLONGED ABSN.
780318 0953 1220 1129 2.8 E QUITE FAST ONSET.
780318 1655 0744* 0345 3.7 E 2 FAST ONSETS(1.7DB@2046& 2.2DB @2100).
780319 1200 1445 1338 1.2 C
780319 1538 1556 1541 1.1 D
780319 2211 2325 2250 0.7 B
780320 0129 0258 0222 1.2 B DOUBLE FEA.
780320 2159 2338 2245 0.7 A
780321 0248 0701 0524 3.3 E LW ST
780322 0538 0800 0648 1.5 CL
780322 2156 2342 2230 1.5 C1
780323 0234 0402 0304 1.1 €
780323 0545 0807 0620 1.8 E SOME I.
780323 1510 1520 1514 0.6 B SYM. L & T.
780324 2257 0030* 2308 1.7 C QUITE FAST ONSET.
760325
780326 0211 0530 0406 1.6 E MUCH ST.
780326 1420 1449 1430 0.4 A
780326 1752 1830 1810 0.9 AL
780326 2005 2240 2031 0.7 E SV ABSN.
780326 2331 0240* 0107 1.6 E ST
780327 0244 0950 0559 4.9 E MUCH ST
780327 1003 1340 1212 3.1 E ST
780327 1710 1913 1716 7.3 F V FAST ONSET. LARGE EVENT.
780327 1913 2109 1924 2.8 F ST
780327 2155 0120* 2304 6.9 E L LARGE ST.
780328 0200 0454 0332 2.4 E SLOW ONSET.

44



THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB
770310 0040 0400 0120 3.0 C ST.
770310 0530 1130 0620 3.3 E 3 BROAD PEAKS.
770310 1400 1415 1406 0.6 B STEADY ABSN.
770310 1740 2240 2158 1.2 A L TO NEXT FEA.
770310 2240 0000* 2250 7.8 G SPIKE, FOLL BY SHARP ONSET OF 2ND PEAK.
770311 1000 1230 1100 0.8 A DIP
770311 1810 0400* 2040 5.0 F ST&L.
770312 0600 0800 0700 1.0 C BROAD DIP.
770312 0840 1100 0910 2.0 D ST IN CLASSIC TYPE EVENT
770312 1640 0220* 0120 3.0 E SEVERAL PEAKS.
770313 1000 1300 1150 1.0 A BROAD DIP.
770313 2000 2130 2036 0.5 A L TO STORM W 2 SMALL PEAKS
770313 2120 2200 2140 3.4 G SIMILIAR EVENT TO 2250 ON 77-03-10. DOUBLE FEA.
770313 2250 2330 2300 2.1 C
770314 0230 0340 0310 2.5 C
770314 0400 0715 0453 0.8 A STEADY ABSN.
770314 0715 1030 0740 1.9 E SMOOTH W 2 DIPS.
770315 0540 1700 0840 0.9 A
770316 0630 1000 0700 1.3 A BROAD FEA.
770317 1300 1520 1430 1.8 C L (1300-1405). ONE SHARP EDGE.
770318 0040 0900 0110 1.8 C 2 BROAD PEAKS & LONG TALL.
770318 1300 1500 1320 1.1 Bl .
770319 0040 1700 0620 0.8 A WEAK IRREG 1
770319 1930 2200 2030 0.8 A
770320 0000 0800 0020 1.5 4
770320 2050 V000* 2050 3.0 F SHARP ONSET
770321 1910 0100* 0010 1.2 A
770322 0620 0930 0710 1.2 A
770323 0130 0600 0330 1.0 A SYM
770323 0740 1130 0820 1.2 A
770323 2220 0300* 2320 1.9 E TRACE DISTURBED, AT END.
770324 0520 1200 0730 1.2 A IRREG
770324 1930 2150 1950 1.2 C ST.
770325 0010 0320 0220 0.9 A
770325 1850 2240 2045 3.4 F 3 SPIKES
770326 0020 0240 0130 1.0 A BROAD DIP
770326 0240 0530 0320 2.9 C IRREG
770326 0730 1030 0830 1.5 C BROAD FEA
770326 1430 1700 1550 1.3 A
770326 1700 2030 1810 0.7 A
770327 2300 0040* 2310 1.0 B
770328 0350 0600 0430 1.5 C
770328 0840 1130 0920 1.5 C BROAD DIP
770328 1720 1820 1720 2.3 F SMALL SPIKE
770329 0220 0330 0250 1.2 CI
770330
770331
770401 0640 1200 0720 0.7 A
770401 1500 1600 1530 0.8 A ST
770402 2300 U320* 0005 1.0 B
770403 0000 0320 0055 0.9 A
770403 2200 G040* 0000 0.8 A L TO MAJOR STORM
770404 0040 0320 0215 4.7 E ST
770404 G610 1300 0630 6.3 D LARGE CLASSIC FEA W ST
770404 1830 2020 1850 1.1 B

28



THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB

770909 2020 0110* 2103 0.9 A

770910 0110 0845 0330 2.0 E MF(0110-0600);T.

770910 0930 1100 1026 0.9 A ST.

770910 1100 1930 1435 2.4 E L,MF(1220-1600),T WITH SMALL PEAK AT APPROX 1740.

770910 2300 0010* 2329 1.7 C 1 DIP BEFORE P.O. IRREG ABSN.MF (23002340),

770911 QO1LO0 0655 0347 2.2 E PER OF LRREG ABSN L,IRREG MF(0240-0415);T.

770911 0655 0940 0727 2.4 D

770911 0940 1640 1022 1.4 D ST.(BROAD).SHORT L,MF(0950-1300),T.

770911 1710 1805 1738 0.6 A ST,1.CHART ENDS 1905.

770911 1915 2015 1954 0.5 Al.

770911 2030 2150 2053 1.0 A ST.I.

770911 2220 2340 2254 1.3 C CUSP. iF
770912 0345 0730 0526 1.6 A DOUBT ABOUT POSN OF QDC START & END TIMES INACCURAT f
770912 2115 0430* 0027 1.5 A MUCH ST.L,MF(2200~-0430).
770913 0720 1150 1023 1.5 E SOME ST. NO REAL SEPARATION BETWEEN THIS & NEXT FEA
770913 1150 1350 1229 2.9 C SEVERAL PEAKS. ;
770913 1350 1650 1523 0.6 A T TO PRECEEDING C FEA. i]
770913 1650 1855 1801 0.9 A SOME ST.

770913 1935 2215 1935 1.5 F F-TYPE EDGE FOLL BY ST.&3C-TYPE FEA.MF(1930-2120),T <
770913 2220 2345 2309 0.7 A |
770913 2345 0630* 0307 2.0 E L,MF(0145-0330),ST,T.

770914

770915 0345 0510 0416 1.2 A L,MF(0400~0500)

770915 U510 0650 0552 1.2 A

770915 0650 1520 1048 3.6 E L,MF(0330~-1520)

770916 1600 1715 1647 1.6 C ST,INCL.SMALL F-TYPE EDGE(1635).1.3DB@1635. E
770917 0250 0640 0429 0.9 A

770917 0640 1645 0750 2.3 E GENTLY VARYING FEATURE-BROAD ST. ‘
770918 0430 0530 0453 0.6 A |
770918 1050 1500 1150 0.9 A 7
770919 1030 1200 1054 1.3 C ST.

770919 1200 1920 1627 3.0 E L,MF(1240-1840);T.ST.MOSTLY BROAD.

770919 1920 2130 2011 4.7 C SHARP ST.

770919 2315 O0010* 2343 2.6 C SINGLE, SHARP PEAK.

770920 0010 0240 0105 2.9 C ST.3MAIN PEAKS.

770920 0240 0655 0408 3.0 E LGE,SOMEWHAT IRREG.DIP.ABSN APPROX 1.0DB AT 0655.
770920 0655 1905 0949 6.0 E EX PER OF STRONG,SOMEWHAT IRREG ABSN. ]
770920 1905 2015 1945 1.5 F L,MF(1942-2015),ST.EDGE AT APPROX1942.1.2DB@1944. j
770920 2015 2130 2036 2.2 C MFWITH ST.(2015-2045),T(STEADY ABSN,APPROX 1.2DB) |
770920 2130 0030% 2200 2.9 C ST.MF(2130-2300);T.

770921 0030 0505 0400 3.4 E LGE FEA,MUCH ST,BROAD & SHARP.PULSATIONS.

770921 0505 0950 O811 6.6 E LGE FEA,MUCH ST,BROAD & SHARP.PULSATIONS.

770921 0950 1220 1106 7.9 F L,MF(1050-1155);T. CONSIDERABLE ST.6.1DB@1052.

770921 1220 1430 1309 0.8 A

770921 1930 2005 1935 2.1 F CLASSIC.ST.FOLLOWS.

770921 2020 23306 2121 3.3 E E-TYPE FEA W AT LEAST 1F-TYPE EDGE. I
770921 2330 0200* 2351 0.6 E MUCH ST.DRAMATIC. '
770922 0200 0630 0351 3.8 E ST. t
770922 0755 1100 0838 2.9 C SINGLE FEATURE.MF(0755-1000);T. i
770922 1100 1235 1127 2.8 C ST.

770922 1235 1505 1306 0.6 A 2 SMALL FEATURES. |
770922 1505 1645 1536 3.2 C ST. \
770922 1840 1930 1841 1.8 C MF(1840-1900);T. i
770922 1930 2200 1952 7.0 F DRAMATIC.PULNS.SOME CONFUSION W 1.MF(1930-2050);T.- |
770922 2210 0050* 2308 2.2 F MF(2210-0000).2.0DB@2214. i

37


THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS

UT UT UT DB
760922 1910 0030* 1938 2.0 F L, MF (1937- 2050). T.
760923 0835 1130 0845 3.1 D
760923 1135 1400 1141 7.0 F L, MF (1138-1310), T.
760923 1400 1630 1510 0.6 AL, MF (1450-1520), T.
760924 0145 0250 0206 1.0 A
760924 1120 1630 1304 0.6 A SV DEP. OF TRACE.
760925 U020 0230 0049 2.7 F L, MF (0048-0135), T.
760925 0830 1230 0944 2.2 E 2 PEAKS.
760925 1230 1530 1413 0.8 A
760925 1530 2250 1830 1.5 E SHARP ISOLATED PEAK @ 1830.
760925 2250 0130*% 2354 3.5 F L, MF (2344-2510).
760926 0330 0700 0535 0.6 A
760926 1240 1600 1435 0.7 A
760927 0040 0245 O117 1.8 C L, MF(0105-0200), T.
760927 0755 0940 0837 0.7 A
760927 1020 1415 1201 0.7 A BROAD ST.
760927 2120 0030% 2255 1.8 C L, MF(2240-2430).
760928
760929 2100 0530* 0358 0.8 A L, MF(2720-2830). T.
760930 1900 0130*% 2128 2.4 C L, MF(2115-2230), T.
761001 0850 1440 1054 2.5 E MF, T(1400-1440), BROAD ST.
761001 2050 GOOO* 2201 1.6 C L, MF (2150-2250), T.
761002 0115 0350 0222 2.2 C L TO NEXT FEA.
761002 0350 1115 0457 7.4 E ENORMOUS. OVERRALL SHAPE # D.
761002 2210 0930% 0148 1.2 A BROAD PEAKS.
761003 0940 1500 1149 1.5 4
761004 0000 0230 0053 0.6 A
761004 0640 0930 0730 0.7 A MF(0640-0930) T.
761004 0930 1330 1207 1.0 A BROAD ST.
761004 1400 1600 1500 0.6 A
761005 0100 0600 0149 1.5 C MF(0100-0305). T W 2 BROAD PEAKS.
761005 0930 1830 1250 1.5 A BROAD ST.
761006 U515 C730 0536 1.0 A MF(0515-0610), T.-
761006 0800 1530 1027 2.7 E L&T.
761006 1530 1950 0.6 A
761006 2100 2130 2B
761006 2300 0140%* 6A
761007
761008 1900 1030* 8 E BROAD PEAK 1500-1630.
761.009 1400 1800 6 Cc
761010 2140 0330*% C IRREG L, MF(2450-2640), T.
761011 1920 2300 FL, MF(2123-2300).
761012 G120 0700 A L(0120-0240).
761012 1830 O010*% F IRREG.
761013 0520 0910 A L, MF(0650-0840).
761013 0940 1310 0 A QDC UNCERTAIN.
761014 1950 2250 i} A
761015 0540 1140 1 A 4 FEAS.
761015 1600 2030 3 F 2.9DB @2008.
761015 2030 2205 3 Cc
761015 2205 0630* 2352 2.3 E P.O. IRREG ABSN.
761016 0630 1320 0748 4.7 E
761016 1820 0130* 2231 3.7 F IRREG L MF (2228-2530).
761017 0130 1400 0800 9.2 E L, MF(0430-1020), T.
761017 1720 1920 1739 1.1 B 1 @ END.

23



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OOL


THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS

UT UT UT DB
790219 2307 2336 2319 0.7 B SL I.
790220 0343 0414 0408 0.7 B SL I.
790220 1846 2036 1922 0.7 A ST & 1 @ END.
790221 0308 0417 0327 1.0 C SLI.
790221 0450 0640 0555 1.2 C 1 MF W ST.
790221 0642 0745 0720 2.3 C SMALL PULNS.
790221 0746 0852 0833 1.2 C 2 DIPS.
790221 1116 1134 1118 0.5 B
790221 1956 2016 2006 0.4 B SHORT EVENT.
790222 0118 0324 0201 0.6 A SL ST.
790223 0522 0700 0608 0.4 B
790223 0949 1004 0954 0.4 B
790223 2050 2137 2058 0.5 B
790223 2210 0029* 2227 2.8 C 1 MF FOLLOWED BY SMALL FEA.
790224 0033 0154 0142 1.3 €
790224 0209 0413 0257 1.1 E SMALL IRREG ABSN.
790224 0426 0509 0445 0.5 B SMOOTH FEA.
790224 0522 0748 0638 2.0 E 1 LARGE CUSP.
790224 1806 0435* 2111 2.8 E LRREG ABSN.
790225 0445 0532 0457 0.4 B
790225 0534 0640 0615 2.0 C ENDS IN I.
790225 1948 2052 2010 0.9 B
790225 2106 2314 2244 0.9 B
790226 0007 0124 0112 1.1 C RESTART AFTER POWER BREAK.
790226 0413 0524 0449 1.6 C ENDS IN L.
790226 0617 0752 0638 1.9 C
790226 1722 1904 1733 2.0 C QUITE FAST ONSET.
790226 2037 2230 2126 0.7 A SL ST.
790227 0036 0924 0122 4.2 E 2 EVENTS MERGED TOGETHER; 3.6DB @ 0628UT.
790227 1716 1748 1726 0.5 B SMOOTH FEA.
790227 1802 1844 1826 0.5 B SMOOTH FEA.
790227 2228 2248 2230 0.7 B 1 SMALL DIP WL.
790228 0044 0306 06220 1.4 E 1.3DB @0114.
790228 1756 1858 1809 0.7 B
790228 2307 0010* 2328 0.4 B VERY SMALL EVENT.
790301 0029 0046 0035 0.4 B SHORT FEA.
790301 0218 0336 0232 1.3 C
790301 2100 2145 2114 0.4 B
790302 0006 0909 0632 2.0 E PROLONGED EVENT.
790302 2123 2139 2131 0.4 B
790302 2204 0414% 2318 1.1 E
790303 2058 2126 2104 0.5 B
790304 0013 0442 0123 1.6 E LONG, LRREG ABSN.
790304 0447 0652 0547 1.5 C QUITE FAST ONSET.
790304 0923 0944 0930 0.6 B
790304 1005 1034 1010 1.7 C 1 @ END.
790304 2238 2336 2259 1.1 C 2 SMOOTH DIPS.
790305 0246 0418 0323 0.4 B
790305 0520 0934 0655 1.4 E 1 LONG CUSP W SL ST.
790306 0025 0046 0036 0.4 B
790306 0242 0556 0332 2.0 E ST IN T.
790306 0630 0831 0819 1.9 E ENDS IN I.
790306 1726 1742 1734 0.4 B SMALL CUSP.
790306 1812 1837 1822 0.5 B SMALL CUSP.
790306 2011 2150 2038 2.6 C 2 MAIN PEAKS.

59

|


UAG-75

UAG-76

UAG-77

UAG-78

UAG-79

UAG-80

UAG-81

UAG-82

UAG-83

UAG-84

“The Alaska IMS Meridian Chain: Magnetic Variations for 9 March - 27 April 1978," by H.W. Kroeh?
and G.P. Kosinski, National Geophysical and Solar-Terrestrial Data Center, Boulder, CO;
Akasofu, G.J. Romick, C.E. Campbell and G.K. Corrick, University of Alaska, Fairbanks, AK; and
C.E. Hornback and A.M. Gray, NOAA Space Environment Laboratory, Boulder, CO, June 1980, 107 pp,
$3.00.

“Auroral Electrojet Magnetic Activity Indices AE(12) for July - December 1975," by Joe Haskell
Allen, Carl C. Abston, J.E. Salazar and J.A. McKinnon, National Geophysical and Solar-Terrestrial
Data Center, NOAA, Boulder, CO, August 1980, 116 pp, $2.50.

"Synoptic Solar Magnetic Field Maps for the Interval Including Carrington Rotations 1601-1680, May
5, 1973 - April 26, 1979," by J. Harvey, B. Gillespie, P. Miedaner and C. Slaughter, Kitt Peak
National Observatory, Tucson, AZ, August 1980, 66 pp, $2.50.

"The Equatorial Latitude of Auroral Activity During 1972-1977," by NwR. Sheeley, dr. and R.A.
Howard, E. 0. Hulbert Center for Space Research, U.S. Naval Research Laboratory, Washington, DC
and B.S. Dandekar, Air Force Geophysics Laboratory, Hanscom AFB, MA, October 1980, 61 pp, $3.00.

“Solar Observations During Skylab, April 1973 - February 1974, I. Coronal X-Ray Structure, II.
Solar Flare Activity," by J.M. Hanson, University of Michigan, Ann Arbor, MI; and E.C. Roelof and
R.E. Gold, The Johns Hopkins University, Laurel, ND, December 1980, 43 pp, $2.50.

“Experimental Comprehensive Solar Flare Indices for 'Major' and Certain Lesser Flares, 1975-1979,"
compiled by Helen W. Dodson and E. Ruth Hedeman, The Johns Hopkins University, Laurel, MD, July
1981, 33 pp, $2.00.

“Evolutionary Charts of Solar Activity (Calcium Plages) as Functions of Heliographic Longitude and
Time, 1964-1979," by E. Ruth Hedeman, Helen W. Dodson and Edmond C. Roelof, The Johns Hopkins
University, Laurel, MD 20707, August 1981, 103 pp, $4.00.

“International Reference Ionosphere - IRI 79," edited by J. Virginia Lincoln and Raymond 0.
Conkright, National Geophysical and Solar-Terrestrial Data Center, NOAA, Boulder, CO, November
1981, 243 pp, $4.50.

"Solar-Geophysical Activity Reports for September 7-24, 1977 and November 22, 1977," Parts 1 and
2, compiled by John A. McKinnon and J. Virginia Lincoln, World Data Center A for Solar-Terrestrial
Physics, NOAA, Boulder, CO, February 1982, 553 pp, $10.00.

"Catalog of Auroral Radio Absorption During 1976-1979 at Abisko, Sweden," by J.K. Hargreaves, C.M.

Taylor and J.M. Penman, Environmental Sciences Department, University of Lancaster, Lancaster, UK,
July 1982, 69 pp, $3.00.

YrU.S. GOVERNMENT PRINTING OFFICE:1982—576-028 | 3



THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT Ut DB

780414 2350 0400* 0130 T. CHART TIMES ARE APPROX.

SLIGHT ST. CH TIMES ARE APPROX.
CHART TIMES ARE APPROX.

780415 2100 2300 2220 0
780416 0100 0500 0150 1
780417

780418 0330 0600 0500 4
780418 1850 1900 1855 0

CHART TIMES ARE APPROX.
CHART TIMES ARE APPROX.

780419 1750 2100 1920

L CHART TIMES ARE APPROX.
780419 2330 0700* 0000 1

1

1

1. CHART TIMES ARE APPROX.
CHART TIMES ARE APPROX.
IRREG ABSN. CH TIMES ARE APPROX.

780420 1720 1830 1750
780420 2055 0130* 2230
780421

780328 0618 1320 0906 1.8 E FAST ONSET, BUT MUCH 1 @ END.
780329 0311 0550 0417 1.4 A
780329 1136 1200 1138 1.4 D1
780329 2107 0640* 0322 1.7 E PROLONGED PO. SMALL ABSN.
780330 0823 1013 0900 2.7 C1
780330 1040 1305 1044 2.5 F IL
780330 2245 0126* 2255 0.6 BT
780331 1752 2145 1815 0.7 E
780401 0154 0454 0406 2.6 E SHALLOW ST.
780401 0509 0650 0542 1.7 C 1 MAIN FEA.
780401 0650 1300 0718 3.4 E MF(0650-1100)
780401 0025 0215 O114 1.2 C I @ START
780402 0225 0550 0343 1.5 E
780402 1408 1724 1456 0.9 E
780402 1949 2504 2304 7.2 F LARGE ABSN W FAST ONSET
780403 0608 0830 0706 2.9 E
780404 NO DATA
780405 NO DATA
780406 NO DATA
780407 NO DATA
780408 NO DATA
780409 NO DATA
780410 1700 1935 1850 0.8 A 2 PEAKS. CHART TIMES ARE APPROX.
780410 2120 2240 2200 1.0 C1 CHART TIMES ARE APPROX.
780411 0020 0130 0058 2.5 C 1 CHART TIMES ARE APPROX. {
780411 0130 0145 0140 1.5 GL. CHART TIMES ARE APPROX.
780411 0450 0640 0520 2.6 C CHART TIMES ARE APPROX.
780411 0800 0920 0840 1.0 C I. CHART TIMES ARE APPROX. f
780411 1400 2050 1610 2.5 E CHART TIMES ARE APPROX. 4
780411 2125 2210 2130 1.2 CL. CHART TIMES ARE APPROX.
780412 0000 0210 0015 3.0 C SHARP ST.CHART TIMES ARE APPROX. ‘|
780413 0140 0500 0300 1.9 E CHART TIMES ARE APPROX. i
780413 1700 2100 1900 1.3 E IRREG ABSN. CH TIMES ARE APPROX. {
780413 2200 0130* 2300 2.6 E I @ PEAK.CHART TIMES ARE APPROX. '
780414 0130 0600 0300 3.5 E LARGE STORM.CH TIMES ARE APPROX. ]
780414 0600 0750 0650 2.1 CL. CHART TIMES ARE APPROX.
780414 0800 0900 0805 1.0 F MINI EVENT. CH TIMES ARE APPROX.
780414 1150 1220 1200 1.1 F MINI EVENT. CH TIMES ARE APPROX.
780414 1900 2300 1910 3.4 F LONG T. CHART TIMES ARE APPROX.
2.5 F

A

E

E

B

E

F

Cc

E

780422 2000 2200 2005
780423 0110 0300 0200

0.7 T.FAST ONSET.CH TIMES APPROX.
2.3
780423 1850 2108 1940 1.4
6.1
1.2

CHART TIMES ARE APPROX.

. CHART TIMES ARE APPROX.
-6DB @0100. CH TIMES ARE APPROX.
CHART TIMES ARE APPROX.

780423 2200 0800* 0600
780424 0900 1100 1010

amoaw
rere

45


THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT UT UT DB

780513 0030 0300 0124 3.5 E SHARP PEAKS. }
780513 2112 2300 2203 3.9 FL.
780514 0000 0500 0235 1.1 A SLIGHT ST.
780514 1720 1912 1830 0.7 A 2 SHALLOW DIPS.
780514 1931 2154 1936 2.6 F
780515
780516
780517 2024 2126 0.9 BT.
780517 2126 2151 1.2 C SYM. ST.
780518 1912 1934 0.6 A |
780519 |
780520 1822 2124 1852 1.4 C |
780521 1906 2012 1919 0.7 B |
780521 2014 2215 2105 0.8 A 1. SLIGHT ST. |
780521 2249 0100* 2350 3.6 E 2 MALIN PEAKS. |
780522 NO DATA |
780523 NO DATA j
780524 NO. DATA q
780525 NO DATA }
780526 NO DATA
780527 NO DATA
780528 NO DATA
780529 NO DATA
780530 NO DATA
780531 NO DATA
780601 0351 0530 0414 0.8 A I @ START.
780601 2245 0040% 2305 0.5 A
780602 0518 0610 0532 0.5 A
780602 1352 1710 1405 0.7 A
780602 1743 2006 1800 2.8 F 3 PEAKS. i
780603 0007 0101 0045 0.8 BI |
780603 1906 1943 1926 0.7 B }
780604 0151 0258 0218 0.9 B ]
780604 1440 1600 1456 0.7 A I
780604 1846 1952 1908 1.4 BL.
780604 2146 0010* 2224 1.5 E
780605 0102 0128 0110 0.7 BL TO STORM, F
780605 0152 0437 0354 4.7 F MAJOR STORM. |
780605 0355 0750 0608 5.3 F |
780605 0846 1240 0956 1.3 ET.
780605 1850 2130 2052 1.04 i
780605 2202 2312 2206 1.6 D
780606 0032 0122 0104 0.6 B |
780606 2312 0230* 0050 1.2 C 2 PEAKS. [
780607 0612 0718 0630 1.5 C I. E
780607 1800 2104 2028 2.3 EL.
780607 2314 0050* 0002 1.3 C F
780608 0200 0334 0244 1.1 C
780608 0446 0634 0514 1.4 C l. |
780608 1626 1710 1644 0.5 A |
i
780608 1846 1926 1906 0.5 A
780609 0426 0600 0500 0.8 B 1.
780610 0832 0850 0835 1.6 F SHORT TIME FOR F.
780610 1620 1722 1633 0.6 B
780610 1746 1900 1808 0.7 B
|

47


THE ABISKO CATALOG (Continued)

DATE START END MAXIMUM TYPE COMMENTS
UT ut UT DB
760107 0540 0720 0600 1.5 A 1
760108
760109 2100 0400* 0035 0.7 A 1
760110 2250 0200*% 0020 2.0 F L, MF(0020-0200). 3.9DB @ 0040
760111 0240 1130 U530 1.3 A EXTENDED PERIOD OF SV ABSN. MF (0240-0740),T
760111 1625 1715 1640 1.0 B ?L
760111 1800 2100 2000 0.7 AL, MF(1900~-2130)
7OO111 2150 2340 2235 1.2 C CUSP
760111 2340 0400* 0110 1.2 A MF(2340-0230), T.
760112 1900 2015 1910 1.0 A LIKE SMALL TYPE D FEATURE.
760112 2240 0145* 0010 1.7 C L,T.CUSP & PEAK,WHICH IS SHARP.
760113 0240 0315 0257 0.6 A SMALL TYPE A.
760113 0420 U650 0445 1.5 D
76U114 2210 2320 2300 1.0 B L.BLUNT CUSP.
760115 1900 2040 1915 0.6 A ST.D.
760115 2240 0130* 2310 0.8 A T.
760116 0210 0310 0230 1.0 B ST.
7oU116 1820 2110 1930 1.5 F L,ST.MF(1930-2030).T.
760116 2110 0015* 2305 3.7 F ST.,T. 1.8DB@2110.
760117 0210 0310 0240 0.4 A SMALL TYPE A.
760117 U400 1330 0720 1.9 E L UNTIL 0630 V LARGE TYPE A. 1.2DB @1016
760117 1850 2040 1940 0.9 A .
760118 UO15 0240 0040 1.1 A MF(0015-0120).T.
760118 0545 0950 0710 0.6 A ST.
760118 1015 1730 1105 2.0 E 2 PEAKS. LONG T.1.7DB@1300.
760119 0130 0200 0140 0.4 A SMALL TYPE A DIP BETWEEN 010060200.
760120 0200 0330 0230 U.9 A
760120 2100 2300 2220 1.2 A ST.L.
760121 01406 0530 0300 0.86 A
760121 0610 0830 0640 U.9 A ST.
760121 0945 1205 1030 2.3 D
760121 1205 1500 1230 1.7 E CHART ENDS 1250
760121 1800 2050 1958 1.6 C 2. FEAS,W SHARP PEAKS(LIKE F ONSETS)SUP ON TYPE A
760122 0302 0515 0315 3.4 D MF (0302-0415) T
760122 1240 1530 1345 1.5 C L,T.ST.
760122 1700 2355 1900 2.1 C PER OF Si ABSN,W SOME SHARP FEAS.L @ START.
760122 2355 0305* W115 2.4 C L,MF(U100-0355).
760123 0420 0700 0500 1.5 Al.
760123 1105 1320 1150 1.3 A GREATLY CONFUSED BY LNTERFERENCE.
760123 1340 1430 1400 0.5 AL
760124 0850 1600 0915 3.0 D LGE TYPE D,BUT W CONSIDERABLE ST.
760124 2000 2100 2020 0.8 B CUSP.
760125 1140 1315 1255 0.7 AL.
760125 1455 1615 1510 2.3 C LIKE D EXCEPT THAT ONSET IS MORE PEAKED.1SOL FEA.
760126
760127
760128
760129
760130 1915 2140 2015 3.0 F L,MF(2015-2040),f. CONFUSED BY INTERFERENCE.
76U130 2140 2345 2330 1.1 A PERLOD OF WEAK 1RREG.ABSN.CONFUSED BY INTERFERENCE.
760131 0440 0715 U600 1.2 A ST.
760131 1040 1200 1120 0.7 A ST.
760131 1310 1520 1510 1.3 A DIS TYPE A? I.
760131 1900 1950 1920 0.6 A St.
760131 2045 VOUG* 2120 3.1 F STRUCTURED L, (2045-2120) .MF(2120-2330),T-

10