| 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 | 11h 06m | 19d 06h | sudden | +54 | 141 | 14.4 | 92 | 311 | 55 |
| Memambetsu | 11h 06m | 19d 06m | sudden | +64 | 147 | 21.1 | 57 | 30 | 61 |
| Kanoya | 11h 06m | 19d 06h | sudden | +59 | 154 | 11.9 | 83 | 74 | 22 |
(*) 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 17 April 2002.
Plot of Memambetsu 1-minute geomagnetic field for the geomagnetic storm on 17 April 2002.
Plot of Kanoya 1-minute geomagnetic field for during the geomagnetic storm on 17 April 2002.
*) 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 | 08h 34m | 20d 23h | sudden | +19 | 132 | 16.2 | 76 | 242 | 50 |
| Memambetsu | 08h 34m | 20d 23m | sudden | +26 | 162 | 22.4 | 46 | 28 | 72 |
| Kanoya | 08h 34m | 20d 23h | sudden | +22 | 138 | 11.2 | 80 | 57 | 25 |
(*) 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 April 2002.
Plot of Memambetsu 1-minute geomagnetic field for the geomagnetic storm on 19 April 2002.
Plot of Kanoya 1-minute geomagnetic field for during the geomagnetic storm on 19 April 2002.
*) Plot diagram opens in a separate window.
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