Co-Seismic Geomagnetic Variations Observed at the 1995 Hyogoken-Nanbu Earthquake.
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- Iyemori T.
- Faculty of Science, Kyoto University
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- Kamei T.
- Faculty of Science, Kyoto University
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- Tanaka Y.
- Faculty of Science, Kyoto University
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- Takeda M.
- Faculty of Science, Kyoto University
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- Hashimoto T.
- Faculty of Science, Kyoto University
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- Araki T.
- Faculty of Science, Kyoto University
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- Okamoto T.
- Fukui National College of Technology
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- Watanabe K.
- Disaster Prevention Research Institute, Kyoto University
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- Sumitomo N.
- Disaster Prevention Research Institute, Kyoto University
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- Oshiman N.
- Disaster Prevention Research Institute, Kyoto University
書誌事項
- タイトル別名
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- Co-Seismic Geomagnetic Variations Obser
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説明
Impulsive co-seismic geomagnetic variations were observed at two stations nearly 100 km apart from the source region of the 1995 Hyogoken-Nanbu earthquake (M= 7.2). The maximum amplitude at the main shock was 0.6∼1.0 nT and the duration was 20∼30 seconds. These variations seem to have commenced at the origin time and before the arrival of the seismic waves to the observation site of 17 seconds later. A superposed epoch analysis for the aftershocks also reveals similar geomagnetic variations though the amplitude of them is one order of magnitude smaller than that of the main shock. A crustal dynamo mechanism is discussed as a possible cause of such co-seismic geomagnetic variations.
収録刊行物
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- Ｊｏｕｒｎａｌ ｏｆ ｇｅｏｍａｇｎｅｔｉｓｍ ａｎｄ ｇｅｏｅｌｅｃｔｒｉｃｉｔｙ
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Ｊｏｕｒｎａｌ ｏｆ ｇｅｏｍａｇｎｅｔｉｓｍ ａｎｄ ｇｅｏｅｌｅｃｔｒｉｃｉｔｙ 48 (8), 1059-1070, 1996
地球電磁気・地球惑星圏学会
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詳細情報 詳細情報について
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- CRID
- 1390282681487575808
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- NII論文ID
- 130003559444
- 10002202158
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- NII書誌ID
- AA00698879
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- ISSN
- 21855765
- 00221392
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- NDL書誌ID
- 4079937
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可
