| 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 25m | 24d 16h | sudden | +23 | 122 | 13 | 53 | ||
| Memambetsu | 18h 25m | 24d 18m | sudden | +29 | 127 | 16.5 | 32 | ||
| Kanoya | 18h 25m | 24d 16h | sudden | +27 | 108 | 12.9 | 67 | ||
(*) 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 23 April 1998.
Plot of Memambetsu 1-minute geomagnetic field for the geomagnetic storm on 23 April 1998.
Plot of Kanoya 1-minute geomagnetic field for during the geomagnetic storm on 23 April 1998.
*) Plot diagram opens in a separate window.
Copyright (c) 2024 Kakioka Magnetic Observatory, Japan Meteorological Agency. All rights reserved.
