| 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 57m | 15d 15h | sudden | +38 | 109 | 11.2 | 43 | ||
| Memambetsu | 08h 57m | 15d 15m | sudden | +52 | 133 | 14.8 | 37 | ||
| Kanoya | 08h 57m | 15d 15h | sudden | +42 | 122 | 9.9 | 44 | ||
(*) 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 13 May 1991.
Plot of Memambetsu 1-minute geomagnetic field for the geomagnetic storm on 13 May 1991.
Plot of Kanoya 1-minute geomagnetic field for during the geomagnetic storm on 13 May 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 | 20h 41m | 17d 21h | sudden | +37 | 188 | 14 | 74 | ||
| Memambetsu | 20h 41m | 17d 24m | sudden | +47 | 195 | 17.8 | 47 | ||
| Kanoya | 20h 41m | 17d 21h | sudden | +46 | 214 | 11.9 | 84 | ||
(*) 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 16 May 1991.
Plot of Memambetsu 1-minute geomagnetic field for the geomagnetic storm on 16 May 1991.
Plot of Kanoya 1-minute geomagnetic field for during the geomagnetic storm on 16 May 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 | 06.2h | 03d 03h | gradual | 141 | 15.7 | 88 | |||
| Memambetsu | 06.2h | 03d 03m | gradual | 164 | 18.9 | 63 | |||
(*) 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 31 May 1991.
Plot of Memambetsu 1-minute geomagnetic field for the geomagnetic storm on 31 May 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) |
|||
| Kanoya | 06.3h | 03d 03h | gradual | 156 | 15.1 | 87 | |||
(*) 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 Kanoya 1-minute geomagnetic field for during the geomagnetic storm on 31 May 1991.
*) Plot diagram opens in a separate window.
Copyright (c) 2024 Kakioka Magnetic Observatory, Japan Meteorological Agency. All rights reserved.
