| 芦山4.20地震破裂过程及其致灾特征初步分析 |
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| 引用本文： | 张勇,许力生,陈运泰.芦山4.20地震破裂过程及其致灾特征初步分析[J].地球物理学报,2013,56(4):1408-1411. |
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| 作者姓名： | 张勇 许力生 陈运泰 |
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| 作者单位： | 中国地震局地球物理研究所,北京 100081 |
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| 基金项目： | 国家自然科学基金，地震行业基金，中国地震局地球物理所基本业务费 |
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| 摘 要： | 采用全球地震台网的远震地震波数据快速反演了2013年4月20日雅安芦山地震(芦山4.20地震)的破裂过程,在震后3小时得到并发布了相关测定结果.结果显示这次地震的震级约MW6.8,包括两次破裂子事件,但都发生在断层面上震源(破裂起始点)附近,整个地震没有表现出明显的破裂方向性.雅安芦山地震的破裂没有大规模出露地表,主要地震灾害集中在断层上盘,位于芦山县和宝兴县一带.
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| 关 键 词： | 地震波形反演 地震破裂过程 雅安芦山地震 |
| 收稿时间： | 2013-04-24 |
Rupture process of the Lushan 4.20 earthquake and preliminary analysis on the disaster-causing mechanism |
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| ZHANG Yong
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XU Li-Sheng
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CHEN Yun-Tai.Rupture process of the Lushan 4.20 earthquake and preliminary analysis on the disaster-causing mechanism[J].Chinese Journal of Geophysics,2013,56(4):1408-1411. |
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| Authors: | ZHANG Yong XU Li-Sheng CHEN Yun-Tai |
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| Institution: | Institute of Geophysics, China Earthquake Administration, Beijing 100081, China |
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| Abstract: | Fast inversion for the rupturing process of the 20 April 2013 Lushan, Ya'an earthquake was conducted about 3 hours after the earthquake occurrence by using the GSN teleseismic waveform data. The obtained moment magnitude is MW6.8. It included two sub-events during the rupturing process, which occurred near the hypocenter or rupture initiation point and did not show significant rupture direction. The rupture of the earthquake did not break through the ground surface, and seismic disaster is concentrated on the hanging wall of the fault, around Lushan county and Baoxing county of Sichuan Province. |
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| Keywords: | Seismic waveform inversion Earthquake rupture process The Lushan earthquake |
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