| 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 | 06h 48m | 10d 03h | sudden | +15 | 372 | 27.1 | 159 | ||
| Memambetsu | 06h 47m | 10d 19m | sudden | +17 | 392 | 40.7 | 87 | ||
| Kanoya | 06h 48m | 10d 24h | sudden | +19 | 409 | 22.2 | 142 | ||
(*) 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 8 November 1991.
Plot of Memambetsu 1-minute geomagnetic field for the geomagnetic storm on 8 November 1991.
Plot of Kanoya 1-minute geomagnetic field for during the geomagnetic storm on 8 November 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 | 18.7h | 16d 24h | gradual | 92 | 7.9 | 48 | |||
| Memambetsu | 18.7h | 16d 24m | gradual | 90 | 10.9 | 26 | |||
| Kanoya | 18.7h | 17d 03h | gradual | 107 | 7.4 | 59 | |||
(*) 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 14 November 1991.
Plot of Memambetsu 1-minute geomagnetic field for the geomagnetic storm on 14 November 1991.
Plot of Kanoya 1-minute geomagnetic field for during the geomagnetic storm on 14 November 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 | 04h 20m | 20d 03h | sudden | +10 | 110 | 8 | 52 | ||
| Memambetsu | 04h 20m | 19d 24m | sudden | +13 | 130 | 13.1 | 25 | ||
| Kanoya | 04h 21m | 19d 24h | sudden | +14 | 113 | 6.6 | 48 | ||
(*) 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 November 1991.
Plot of Memambetsu 1-minute geomagnetic field for the geomagnetic storm on 19 November 1991.
Plot of Kanoya 1-minute geomagnetic field for during the geomagnetic storm on 19 November 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 | 17.8h | 22d 21h | gradual | 119 | 12 | 53 | |||
| Memambetsu | 17.8h | 22d 20m | gradual | 130 | 18.3 | 36 | |||
| Kanoya | 17.8h | 23d 24h | gradual | 126 | 11.1 | 60 | |||
(*) 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 20 November 1991.
Plot of Memambetsu 1-minute geomagnetic field for the geomagnetic storm on 20 November 1991.
Plot of Kanoya 1-minute geomagnetic field for during the geomagnetic storm on 20 November 1991.
*) Plot diagram opens in a separate window.
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