| 用CAP方法研究安庆4.8级地震震源机制 |
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| 作者姓名： | 洪德全 王行舟 韩立波 戚浩 张炳 |
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| 作者单位： | 1) Earthquake Administration of Anhui Province,Hefei 230031,China , 2) Mengcheng National Field Observation Station,Hefei 230026,China;1) Earthquake Administration of Anhui Province,Hefei 230031,China , 2) Mengcheng National Field Observation Station,Hefei 230026,China;3) Institute of Geophysics,China Earthquake Administration,Beijing 100081,China;1) Earthquake Administration of Anhui Province,Hefei 230031,China;1) Earthquake Administration of Anhui Province,Hefei 230031,China |
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| 基金项目： | The project was supported by the China Earthquake Administration as a work Assignment for Seismic Situation Tracing for Earthquake Forecast and Prediction (2011020104) ． |
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| 摘 要： | In this article, we have inverted local broadband waveform data to determine the focal mechanism of the 2011 MS4.8 Anqing earthquake. Our results show that the best double couple solution of the MS4.8 event is 16°, 74° and 120° for strike, dip and rake angles of one nodal plane respectively, and 131°, 33°, 30° for the other nodal plane. The estimated focal depth is about 3km. Both strikes of the two nodal planes differ significantly to the strike of Susong-Zongyang fault, along which seismic activity has been at a low level since the Late Quaternary. This implies that this earthquake may not have occurred on the Susong-Zongyang fault, and we infer that a buried fault with strike of NNE may be the seismogenic structure of this event.
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| 关 键 词： | Anqing earthquake Cut And Paste method Focal mechanism solution |
| 收稿时间： | 2011-03-10 |
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