| 青海玉树地区中强震震源参数特征研究 |
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| 引用本文： | 王培玲,姚家骏,刘文邦,陈玉华. 青海玉树地区中强震震源参数特征研究[J]. 高原地震, 2013, 25(2): 1-7 |
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| 作者姓名： | 王培玲 姚家骏 刘文邦 陈玉华 |
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| 作者单位： | 青海省地震局,青海西宁,810001 |
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| 基金项目： | 中国地震局科技星火计划青年项目 |
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| 摘 要： | 利用数字化地震资料,对玉树地区2006年5.0、5.6级和2010年7.1级地震的震源机制解、尾波Q值、波速比及应力降等进行了对比研究,结果表明2010年玉树7.1级地震为走滑型与该地区历史地震的震源机制一致。2个地震序列的尾波Q值、波速比和应力降存在明显的不同,特别是玉树7.1级地震前的Ms4.7级地震出现显著差异,应力降值在地震序列的活跃、平静段表现出不同的特征。
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| 关 键 词： | 青海 玉树 中强震 震源参数 |
STUDY ON THE SOURCE PARAMETERS OF MODERATE EARTHQUAKES IN YUSHU AREA OF QINGHAI PROVINCE |
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| WANG Peiling , YAO Jiajun , LIU Wenbang , CHEN Yuhua. STUDY ON THE SOURCE PARAMETERS OF MODERATE EARTHQUAKES IN YUSHU AREA OF QINGHAI PROVINCE[J]. Plateau Earthquake Research, 2013, 25(2): 1-7 |
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| Authors: | WANG Peiling YAO Jiajun LIU Wenbang CHEN Yuhua |
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| Affiliation: | (Earthquake Administration of Qinghai Province, Xining 810001, China) |
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| Abstract: | The focal-mechanism solution, coda wave Q -value, Vp/Vs ratio and stress drop of Ms 5.6 and Ms 5.0 earthquakes in 2006 and Ms 7. 1 earthquake in 2010 in Yushu area of Qinghai province are comparatively studied by using the digital seismic data, the results show that the slide of the Ms 7. 1 earthquake is consistent with the historical earthquake focal-mechanism solution. The coda wave Q-value, Vp/Vs ratio and stress drop of the two earthquake sequences are quite different, especially the obviously precursors appeared in the Ms 4. 7 earthquake before Yushu 7. 1 earthquake, stress drop values characterized different in the active and quiet periods in the two sequences. |
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| Keywords: | Qinghai Yushu Moderate earthquake Source parameter |
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