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Table B.1.
Solar electromagnetic emissions detected from Earth associated with the selected events.
| Onset | Hα | Hα | Δ | Soft X-raysa | Radiob | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Year | Date | (UT) | Earth | observer | (°) | Start (UT) | Peak (UT) | End (UT) | Class | Start (UT) | Peak (UT) | Durationc (min) | Freq (MHz) |
| 1976 | Mar. 21 | 12:52 | N03W33 | W08 | −10 | 13:06 | 13:10 | 13:23 | M1 | 12:42 | 12:51 | 29.0 | 2695 |
| 12:42 | 13:00 | – | 2695 | ||||||||||
| 13:11 | 13:11 | 15.0 | 2695 | ||||||||||
| 1978 | Jan. 1 | 22:00 | S21E06 | W33 | −17 | 21:47 | 21:58 | 22:30 | M3 | 21:48 | 22:07 | 19.1 | 9400 |
| 22:07 | 22:20 | 12.9 | 9400 | ||||||||||
| 1978 | Dec. 11 | 20:00 | S15E14 | E05 | −57 | 18:33 | 19:42 | 20:18 | X1 | 19:40 | 19:49 | 11.0 | 1420 |
| 19:51 | 19:57 | – | 1420 | ||||||||||
| 19:51 | 20:32 | 49.0 | 1420 | ||||||||||
| 1980 | Apr. 5 | 15:55 | N08E22 | W64 | 2 | 15:32 | 16:52 | 16:58 | M5 | 15:46 | 15:53 | 21.0 | 600 |
| 1980 | Apr. 26 | 13:40 | S21E23 | W59 | 20 | 12:50 | 12:52 | 13:05 | C3 | 13:40 | 13:43 | 11.8 | 29 |
| 1980 | May 3 | 08:00 | N25E35 | W41 | 9 | 07:50 | 08:06 | 08:13 | C9.4 | 08:00 | 08:01 | 4.5 | 808 |
| 1980 | May 12 | 02:51 | S14E11 | W51 | 18 | 02:54 | 02:55 | 03:03 | C4.3 | 02:54 | 02:54 | 11.0 | 500 |
| 1980 | May 28 a | 15:44 | S24W28 | W23 | −3 | 15:53 | 15:58 | 16:19 | C9.1 | 15:45 | 15:53 | 35.0 | 5000 |
| 1980 | May 28 b | 17:04 | S18W35 | W30 | 4 | 17:05 | 17:18 | 17:53 | M3.6 | 17:02 | 17:17 | 30.0 | 930 |
| 1980 | May 28 c | 19:38 | S18W33 | W28 | 2 | 19:24 | 19:51 | 20:53 | X1.1 | 19:47 | 19:48 | 21.0 | 100 |
| 1980 | May 28 d | 23:34 | S17W39 | W34 | 8 | 23:32 | 23:44 | 24:45 | M6.9 | 23:38 | 23:42 | 18.0 | 500 |
| 1981 | Jan. 14 | 21:01 | N12E02 | W80 | 26 | 20:58 | 21:33 | 21:33 | C7.2 | 20:59 | 21:00 | 3.3 | 245 |
| 1981 | May 8 | 22:50 | N09E37 | W61 | 18 | 22:50 | 22:51 | 23:20 | M1.7 | 23:10 | 23:20 | 38.6 | 245 |
| 1981 | Jun. 10 | 06:16 | N13E24 | E01 | −31 | 06:22 | 06:24 | 07:08 | M2.2 | 06:21 | 06:24 | 24.0 | 200 |
| 06:21 | 06:26 | – | 200 | ||||||||||
| 06:21 | 06:32 | – | 200 | ||||||||||
| 1982 | Jun. 2 | 15:44 | S08E81 | W25 | −4 | 15:08 | 15:48 | 16:20 | M9.9 | 15:44 | 15:46 | 11.5 | 2800 |
Notes.
(a)
GOES catalogue: ftp://ftp.ngdc.noaa.gov/STP/space-weather/solar-data/solar-features/solar-flares/x-rays/goes/xrs/
(b)
Solar-Geophysical Data reports: ftp://ftp.ngdc.noaa.gov/STP/SOLAR_DATA/SGD_PDFversion/
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