| 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 | 08.5h m | 06d 24h | gradual | 297 | -1 | 177 | |||
| Memambetsu | 05.1h m | 06d 18m | gradual | 363 | -1 | 97 | |||
| Kanoya | 10.2h m | 06d 15h | gradual | 306 | -1 | 166 | |||
(*) 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 4 June 1991.
Plot of Memambetsu 1-minute geomagnetic field for the geomagnetic storm on 4 June 1991.
Plot of Kanoya 1-minute geomagnetic field for during the geomagnetic storm on 4 June 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 | 00h 40m | C | sudden | +25 | 194 | -1 | 108 | ||
| Memambetsu | 00h 40m | C | sudden | +12 | 203 | -1 | 106 | ||
| Kanoya | 00h 40m | C | sudden | +33 | 227 | -1 | 98 | ||
(*) 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 9 June 1991.
Plot of Memambetsu 1-minute geomagnetic field for the geomagnetic storm on 9 June 1991.
Plot of Kanoya 1-minute geomagnetic field for during the geomagnetic storm on 9 June 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 | 17h 16m | C | sudden | +85 | 149 | -1 | 149 | ||
| Memambetsu | 17h 16m | C | sudden | +109 | 194 | -1 | 70 | ||
| Kanoya | 17h 16m | C | sudden | +94 | 176 | -1 | 137 | ||
(*) 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 June 1991.
Plot of Memambetsu 1-minute geomagnetic field for the geomagnetic storm on 10 June 1991.
Plot of Kanoya 1-minute geomagnetic field for during the geomagnetic storm on 10 June 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 | 10h 12m | 14d 10h | sudden | +45 | 284 | -1 | 156 | ||
| Memambetsu | 10h 12m | 14d 15m | sudden | +60 | 345 | -1 | 88 | ||
| Kanoya | 10h 12m | 14d 18h | sudden | +51 | 328 | -1 | 122 | ||
(*) 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 12 June 1991.
Plot of Memambetsu 1-minute geomagnetic field for the geomagnetic storm on 12 June 1991.
Plot of Kanoya 1-minute geomagnetic field for during the geomagnetic storm on 12 June 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 | 10h 19m | 18d 15h | sudden | +47 | 106 | -1 | 73 | ||
| Memambetsu | 10h 19m | 18d 12m | sudden | +61 | 134 | -1 | 51 | ||
| Kanoya | 10h 19m | 18d 12h | sudden | +53 | 113 | -1 | 110 | ||
(*) 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 June 1991.
Plot of Memambetsu 1-minute geomagnetic field for the geomagnetic storm on 17 June 1991.
Plot of Kanoya 1-minute geomagnetic field for during the geomagnetic storm on 17 June 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 | 04.1h m | 24d 18h | gradual | 77 | -1 | 56 | |||
(*) 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 23 June 1991.
*) Plot diagram opens in a separate window.
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