| Observatory | Commencing time | Ending time | Geomagnetic field | Geoelectric field | |||||
| Type (sudden/gradual) | Amplitude of abrupt onset H (nT) g(nT) |
Range | Range | ||||||
| Hour Minute (UTC) |
Date Time (UTC) |
Horizontal component H (nT) |
Declination D (arcminute) |
Vertical component Z (nT) |
East-west component (mV/km) |
North-south component (mV/km) |
|||
| Kakioka | 18h 13m | 02d 24h | sudden | +18 | 188 | 12.2 | 102 | ||
| Memambetsu | 18h 14m | 02d 21m | sudden | +30 | 200 | 18.7 | 84 | ||
| Kanoya | 18h 14m | 03d 20h | sudden | +21 | 200 | 10.5 | 93 | ||
(*) Time is in UTC (Universal Time Coordinated).
(*) Time is given in 1-minute increments for the sudden commencement type and in 0.1-hour increments for the gradual commencement type.
(*) "-1" is displayed for the range, when it is unknown due to missing measurements, etc.
(*) The range may not be determined for a storm which is followed by the next one before its ending (the ending time is indicated by "C").
Plot of Kakioka 1-minute geomagnetic field for the geomagnetic storm on 1 October 1991.
Plot of Memambetsu 1-minute geomagnetic field for the geomagnetic storm on 1 October 1991.
Plot of Kanoya 1-minute geomagnetic field for during the geomagnetic storm on 1 October 1991.
*) Plot diagram opens in a separate window.
| Observatory | Commencing time | Ending time | Geomagnetic field | Geoelectric field | |||||
| Type (sudden/gradual) | Amplitude of abrupt onset H (nT) g(nT) |
Range | Range | ||||||
| Hour Minute (UTC) |
Date Time (UTC) |
Horizontal component H (nT) |
Declination D (arcminute) |
Vertical component Z (nT) |
East-west component (mV/km) |
North-south component (mV/km) |
|||
| Kakioka | 09.9h | 09d 08h | gradual | 90 | 13.8 | 57 | |||
| Memambetsu | 09.9h | 09d 08m | gradual | 95 | 18.2 | 32 | |||
| Kanoya | 09.9h | 09d 08h | gradual | 101 | 12.1 | 52 | |||
(*) Time is in UTC (Universal Time Coordinated).
(*) Time is given in 1-minute increments for the sudden commencement type and in 0.1-hour increments for the gradual commencement type.
(*) "-1" is displayed for the range, when it is unknown due to missing measurements, etc.
(*) The range may not be determined for a storm which is followed by the next one before its ending (the ending time is indicated by "C").
Plot of Kakioka 1-minute geomagnetic field for the geomagnetic storm on 6 October 1991.
Plot of Memambetsu 1-minute geomagnetic field for the geomagnetic storm on 6 October 1991.
Plot of Kanoya 1-minute geomagnetic field for during the geomagnetic storm on 6 October 1991.
*) Plot diagram opens in a separate window.
| Observatory | Commencing time | Ending time | Geomagnetic field | Geoelectric field | |||||
| Type (sudden/gradual) | Amplitude of abrupt onset H (nT) g(nT) |
Range | Range | ||||||
| Hour Minute (UTC) |
Date Time (UTC) |
Horizontal component H (nT) |
Declination D (arcminute) |
Vertical component Z (nT) |
East-west component (mV/km) |
North-south component (mV/km) |
|||
| Kakioka | 03h 50m | 22d 20h | sudden | +16 | 131 | 10.6 | 66 | ||
| Memambetsu | 03h 50m | 22d 20m | sudden | +21 | 137 | 15.4 | 32 | ||
| Kanoya | 03h 52m | 22d 20h | sudden | +18 | 147 | 9.6 | 62 | ||
(*) Time is in UTC (Universal Time Coordinated).
(*) Time is given in 1-minute increments for the sudden commencement type and in 0.1-hour increments for the gradual commencement type.
(*) "-1" is displayed for the range, when it is unknown due to missing measurements, etc.
(*) The range may not be determined for a storm which is followed by the next one before its ending (the ending time is indicated by "C").
Plot of Kakioka 1-minute geomagnetic field for the geomagnetic storm on 19 October 1991.
Plot of Memambetsu 1-minute geomagnetic field for the geomagnetic storm on 19 October 1991.
Plot of Kanoya 1-minute geomagnetic field for during the geomagnetic storm on 19 October 1991.
*) Plot diagram opens in a separate window.
| Observatory | Commencing time | Ending time | Geomagnetic field | Geoelectric field | |||||
| Type (sudden/gradual) | Amplitude of abrupt onset H (nT) g(nT) |
Range | Range | ||||||
| Hour Minute (UTC) |
Date Time (UTC) |
Horizontal component H (nT) |
Declination D (arcminute) |
Vertical component Z (nT) |
East-west component (mV/km) |
North-south component (mV/km) |
|||
| Kakioka | 10h 54m | C | sudden | +56 | 327 | 17 | 161 | ||
| Memambetsu | 10h 54m | C | sudden | +69 | 362 | 24.6 | 53 | ||
| Kanoya | 10h 54m | C | sudden | +62 | 386 | 14.7 | 139 | ||
(*) Time is in UTC (Universal Time Coordinated).
(*) Time is given in 1-minute increments for the sudden commencement type and in 0.1-hour increments for the gradual commencement type.
(*) "-1" is displayed for the range, when it is unknown due to missing measurements, etc.
(*) The range may not be determined for a storm which is followed by the next one before its ending (the ending time is indicated by "C").
Plot of Kakioka 1-minute geomagnetic field for the geomagnetic storm on 28 October 1991.
Plot of Memambetsu 1-minute geomagnetic field for the geomagnetic storm on 28 October 1991.
Plot of Kanoya 1-minute geomagnetic field for during the geomagnetic storm on 28 October 1991.
*) Plot diagram opens in a separate window.
| Observatory | Commencing time | Ending time | Geomagnetic field | Geoelectric field | |||||
| Type (sudden/gradual) | Amplitude of abrupt onset H (nT) g(nT) |
Range | Range | ||||||
| Hour Minute (UTC) |
Date Time (UTC) |
Horizontal component H (nT) |
Declination D (arcminute) |
Vertical component Z (nT) |
East-west component (mV/km) |
North-south component (mV/km) |
|||
| Kakioka | 16h 50m | 02d 24h | sudden | +31 | 152 | 15.6 | 89 | ||
| Memambetsu | 16h 50m | 02d 08m | sudden | +40 | 188 | 23.7 | 41 | ||
| Kanoya | 16h 50m | 02d 24h | sudden | +34 | 184 | 12.3 | 85 | ||
(*) Time is in UTC (Universal Time Coordinated).
(*) Time is given in 1-minute increments for the sudden commencement type and in 0.1-hour increments for the gradual commencement type.
(*) "-1" is displayed for the range, when it is unknown due to missing measurements, etc.
(*) The range may not be determined for a storm which is followed by the next one before its ending (the ending time is indicated by "C").
Plot of Kakioka 1-minute geomagnetic field for the geomagnetic storm on 31 October 1991.
Plot of Memambetsu 1-minute geomagnetic field for the geomagnetic storm on 31 October 1991.
Plot of Kanoya 1-minute geomagnetic field for during the geomagnetic storm on 31 October 1991.
*) Plot diagram opens in a separate window.
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