書誌事項
- タイトル別名
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- S Wave Attenuation in the Vicinity of Ground Surface
- チ ヒョウソウ フキン ニ オケル Sハ ノ ゲンスイ
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抄録
Quality factor, QS, of attenuation for shear waves in the vicinity of ground surface is estimated by spectral analysis of body waves from micro-earthquakes observed at Mitsumata in Akita prefecture. The analysis is made for thirty earthquakes, in which S-P times are between 1 and 2sec.<br>Based on some reasonable assumptions, it is found that the value of QS can be easily estimated from the average slope of spectral amplitude ratio between the direct P or S wave and the S or P wave converted at the boundary of the surface layer and the substratum. The result indicates that QS in the surface layer takes a value from 5 to 20 in the frequency range between 6 and 30Hz.
収録刊行物
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- 地震 第2輯
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地震 第2輯 30 (3), 275-282, 1977
公益社団法人 日本地震学会
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詳細情報 詳細情報について
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- CRID
- 1390001204303922944
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- NII論文ID
- 130006785034
- 40001525863
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- NII書誌ID
- AN00305741
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- ISSN
- 18839029
- 2186599X
- 00371114
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- NDL書誌ID
- 1918211
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- データソース種別
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- JaLC
- NDL
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- 抄録ライセンスフラグ
- 使用不可