| 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 | 21h 56m | C | sudden | +15 | 126 | 14.7 | 61 | ||
| Memambetsu | 21h 56m | C | sudden | +18 | 132 | 19.8 | 38 | ||
| Kanoya | 21h 56m | C | sudden | +21 | 162 | 14.6 | 74 | ||
(*) 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 May 1998.
Plot of Memambetsu 1-minute geomagnetic field for the geomagnetic storm on 1 May 1998.
Plot of Kanoya 1-minute geomagnetic field for during the geomagnetic storm on 1 May 1998.
*) 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 | 17h 43m | 05d 21h | sudden | +19 | 229 | 25.2 | 126 | ||
| Memambetsu | 17h 43m | 05d 22m | sudden | +23 | 247 | 33.5 | 52 | ||
| Kanoya | 17h 43m | 05d 22h | sudden | +23 | 259 | 23 | 134 | ||
(*) 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 3 May 1998.
Plot of Memambetsu 1-minute geomagnetic field for the geomagnetic storm on 3 May 1998.
Plot of Kanoya 1-minute geomagnetic field for during the geomagnetic storm on 3 May 1998.
*) Plot diagram opens in a separate window.
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