| 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 | 05h 26m | 11d 04h | sudden | +18 | 97 | 2.9 | 48 | ||
| Memambetsu | 05h 26m | 10d 24m | sudden | +19 | 108 | 5.1 | 19 | ||
| Kanoya | 05h 26m | 10d 24h | sudden | +26 | 103 | 2.8 | 50 | ||
(*) 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 10 December 1997.
Plot of Memambetsu 1-minute geomagnetic field for the geomagnetic storm on 10 December 1997.
Plot of Kanoya 1-minute geomagnetic field for during the geomagnetic storm on 10 December 1997.
*) 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 | 02h 10m | 31d 04h | sudden | +10 | 107 | 4.2 | 42 | ||
| Memambetsu | 02h 10m | 30d 24m | sudden | +11 | 102 | 7.3 | 24 | ||
| Kanoya | 02h 10m | 30d 24h | sudden | +11 | 132 | 3.9 | 51 | ||
(*) 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 30 December 1997.
Plot of Memambetsu 1-minute geomagnetic field for the geomagnetic storm on 30 December 1997.
Plot of Kanoya 1-minute geomagnetic field for during the geomagnetic storm on 30 December 1997.
*) Plot diagram opens in a separate window.
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