書誌事項
- タイトル別名
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- Observations of seismic signals induced by snow avalanches
- ジシンドウ ノ カンソク ニ ヨル ナダレ ノ ケンキュウ
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Since a seismic wave associated with a snow avalanche may contain considerable information about the avalanche itself, seismic observation using 4 seismographs was carried out at Toikanbetsu (N45°, E142°), Northern Hokkaido, Japan during 80 days from January to April 2001. This paper first discusses the characteristics of the sesmic signals. Second techniques to estimate the avalanche release point and its scale are developed. As a result of this observation, totally 50 seismic waves from full-depth avalanches were obtained. They correspond to 86% of all observed avalanches, which indicates that monitoring of avalanches with seismographs is useful. The shapes of waves from avalanches released at the same point are similar to each other. From frequency analyses of the seismic signals, a negative correlation is found between the dominant frequencies of the seismic signals and the distance from the avalanche release point to the location of the seismograph. On the other hand, the positive correlation is found between the total energy of the seismic wave and the avalanche mass. The results indicate that the avalanche release point and avalanche mass can be estimated.
収録刊行物
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- 雪氷
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雪氷 66 (1), 3-10, 2004
公益社団法人 日本雪氷学会
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詳細情報 詳細情報について
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- CRID
- 1390282681436593792
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- NII論文ID
- 10012126976
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- NII書誌ID
- AN00131221
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- ISSN
- 18836267
- 03731006
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- NDL書誌ID
- 6853267
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- 本文言語コード
- ja
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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