| 三峡水库蓄水初期9次微震震源机制解特征 |
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| 引用本文： | 薛军蓉,李峰,王育.三峡水库蓄水初期9次微震震源机制解特征[J].大地测量与地球动力学,2004,24(2):48-51. |
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| 作者姓名： | 薛军蓉 李峰 王育 |
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| 作者单位： | 湖北省地震局,武汉,430071 |
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| 基金项目： | 科技部 2 0 0 2年公益研究专项(国科发财字 [2 0 0 2 ] 484号)，长江三峡工程开发总公司 2 0 0 3年专项资助项目 (CT -0 3 -0 7-0 2 )“长江三峡水库诱发地震监测研究” |
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| 摘 要： | 给出了三峡水库蓄水半年内库区9次微震震源机制解的结果，并对其特征进行了分析，得出：发震断裂滑动类型从蓄水前的斜滑型改变为蓄水后的倾滑型，地震构造主压应力P轴从蓄水前的以水平力和近水平力为主改变为蓄水后的以垂直力为主．构造主应力方位则不太集中。
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| 关 键 词： | 三峡水库 蓄水 微震 震源机制解 断层 构造应力 |
| 文章编号： | 1671-5942(2004)02-0048-04 |
| 修稿时间： | 2004年2月28日 |
FEATURES OF FOCAL MECHANISM SOLUTION OF 9 SLIGHT SHOCKS AFTER IMPOUNDMENT OF THREE GORGES RESERVOIR |
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| Xue Junrong,Li Feng and Wang Yu.FEATURES OF FOCAL MECHANISM SOLUTION OF 9 SLIGHT SHOCKS AFTER IMPOUNDMENT OF THREE GORGES RESERVOIR[J].Journal of Geodesy and Geodynamics,2004,24(2):48-51. |
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| Authors: | Xue Junrong Li Feng and Wang Yu |
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| Abstract: | This paper presents results of focal mechanism solution of 9 slight shocks and analyzed the characteristics of the results from the impoundment of the Three Gorges reservoir within half a year. The analysis indicates that the fault slip changed from diagonal-slip to dip-slip and the principal stress P of its seismotectonics has changed from horizontal or near horizontal before impoundment to vertical stress after,but the principal tectonic stress is not concentrative. |
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| Keywords: | the Three Gorges reservoir impoundment focal mechanism solution fault slip type tectonic stress |
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