2012年12月
Temporal changes in attenuation of S waves through a fault zone in a South African gold mine
GEOPHYSICAL JOURNAL INTERNATIONAL
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- 巻
- 191
- 号
- 3
- 開始ページ
- 1317
- 終了ページ
- 1324
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1111/j.1365-246X.2012.05678.x
- 出版者・発行元
- OXFORD UNIV PRESS
We investigated the temporal changes in the seismic attenuation of a fault zone using near-source recordings of S waves from repeating microearthquakes that occurred both before and after M similar to 2 earthquakes in the Bambanani gold mine, South Africa. Because the source locations and the mechanisms of repeating earthquakes can be regarded as identical, the attenuation change can be estimated using the spectral ratios for repeating earthquake pairs. We found an increase in the S-wave attenuation parameter on the vertical component which is positively correlated with frequency, corresponding to times before and after the M similar to 2 earthquakes. This increase can be explained by scattering attenuation, with a typical scale of damage in the fault zone of similar to 3 m.
- リンク情報
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- DOI
- https://doi.org/10.1111/j.1365-246X.2012.05678.x
- J-GLOBAL
- https://jglobal.jst.go.jp/detail?JGLOBAL_ID=201302216717579639
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000310982400034&DestApp=WOS_CPL
- ID情報
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- DOI : 10.1111/j.1365-246X.2012.05678.x
- ISSN : 0956-540X
- eISSN : 1365-246X
- J-Global ID : 201302216717579639
- Web of Science ID : WOS:000310982400034