書誌事項
- タイトル別名
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- Attenuation of Seismic Waves along the Rokko Fault Zone
- ロッコウ ダンソウタイ ゾイ ノ ジシンハ ノ ゲンスイ
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抄録
To investigate the effect of the Rokko fault zone on seismic wave attenuation, we estimated temporal coda attenuation and apparent body wave attenuation in the crust beneath Kobe area, Japan. We analyzed 153 aftershock seismograms of the 1995 Hyogo-ken Nanbu Earthquake (Jan. 17, MJMA=7.2) for the frequency ranges 1.5≤f≤24Hz. The Qc-1 depends strongly on frequency: Qc-1=0.057f-1.13 at lapse time 20s. The Qp-1 and Qs-1 are expressed as Qp-1=0.057f-0.96 and Qs-1=0.017f-0.72, respectively. Qc-1 values estimated in the aftershock area are nearly the same as those estimated in the Kinki district. On the other hand, Qs-1 values are larger than those of the Kinki area and other regions.<BR>These results suggest that the Rokko fault zone attenuates the amplitude of direct S waves more strongly than average crust does, but the fault zone does not affect coda Q.
収録刊行物
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- 地震 第２輯
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地震 第２輯 50 (2), 173-182, 1997
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
- 1390001204307243008
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- NII論文ID
- 130006788767
- 10002501204
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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
- 4292595
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- データソース種別
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- JaLC
- NDL
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- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可
