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Geomagnetic storm information (July 2004)


yGeomagnetic storm observed on 16 July 2004z
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 55m 17d 14h sudden +5 93 11.8 71
Memambetsu 21h 55m 17d 14m sudden +6 112 15.9 38 16 41
Kanoya 21h 55m 17d 14h sudden +6 101 10.6 65 34 14

(*) 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 July 2004.
Plot of Memambetsu 1-minute geomagnetic field for the geomagnetic storm on 16 July 2004.
Plot of Kanoya 1-minute geomagnetic field for during the geomagnetic storm on 16 July 2004.

*) Plot diagram opens in a separate window.



yGeomagnetic storm observed on 22 July 2004z
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 35m 23d 20h sudden +16 145 12.3 75 202 34
Memambetsu 10h 35m 23d 20m sudden +18 178 15.8 39 20 52
Kanoya 10h 35m 23d 20h sudden +18 137 10.1 77 45 13

(*) 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 22 July 2004.
Plot of Memambetsu 1-minute geomagnetic field for the geomagnetic storm on 22 July 2004.
Plot of Kanoya 1-minute geomagnetic field for during the geomagnetic storm on 22 July 2004.

*) Plot diagram opens in a separate window.



yGeomagnetic storm observed on 24 July 2004z
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 06h 14m 26d 15h sudden +34 204 13.3 106 244 44
Memambetsu 06h 14m 26d 15m sudden +47 193 18.2 64 23 68
Kanoya 06h 14m 26d 15h sudden +38 231 11.4 105 61 18

(*) 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 24 July 2004.
Plot of Memambetsu 1-minute geomagnetic field for the geomagnetic storm on 24 July 2004.
Plot of Kanoya 1-minute geomagnetic field for during the geomagnetic storm on 24 July 2004.

*) Plot diagram opens in a separate window.



yGeomagnetic storm observed on 26 July 2004z
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 22h 49m 28d 24h sudden +38 233 17.3 153 565 101
Memambetsu 22h 49m 28d 24m sudden +40 268 27.3 88 73 170
Kanoya 22h 49m 28d 24h sudden +50 281 15.5 119 108 30

(*) 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 26 July 2004.
Plot of Memambetsu 1-minute geomagnetic field for the geomagnetic storm on 26 July 2004.
Plot of Kanoya 1-minute geomagnetic field for during the geomagnetic storm on 26 July 2004.

*) Plot diagram opens in a separate window.



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