| 喜马拉雅块体现今运动学特征的地震矩张量反演分析 |
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| 引用本文： | 杜继亮,许才军,李志才.喜马拉雅块体现今运动学特征的地震矩张量反演分析[J].武汉大学学报(信息科学版),2002,27(3):261-264. |
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| 作者姓名： | 杜继亮 许才军 李志才 |
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| 作者单位： | 1. 黑龙江科技学院资源与环境工程系,黑龙江省鸡西市南星街32号,158105
2. 武汉大学测绘学院,武汉市珞喻路129号,430079 |
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| 基金项目： | 国家自然科学基金资助项目 (4 990 40 0 1,499740 0 1) |
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| 摘 要： | 利用地震矩张量反演计算了喜马拉雅块体地震主应变率，应变率主方向以及变形速率，探讨了喜马拉雅块体现了形变特征，并与GPS形变监测结果以及地震结果进行了比较分析。地震矩张量反演结果表明，喜马拉雅块体不仅有南北向的压缩变形，而且有显著的东西向拉张运动，其变形量级与GPS形变监测结果，地质资料得出的结果基本一致，与珠峰地区GPS计算结果获得的该地区的应变趋势基本一致。
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| 关 键 词： | 地震矩张量 喜马拉雅块体 运动学特征 形变特征 反演 |
| 文章编号： | 1000-050X(2002)03-0261-04 |
| 修稿时间： | 2001年10月15 |
Characteristic Analysis of Deformations in Himalaya Block by Inverting Seismic Moment Tensors |
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| DU Jiliang,XU Caijun,LI Zhicai.Characteristic Analysis of Deformations in Himalaya Block by Inverting Seismic Moment Tensors[J].Geomatics and Information Science of Wuhan University,2002,27(3):261-264. |
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| Authors: | DU Jiliang XU Caijun LI Zhicai |
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| Institution: | DU Jiliang 1 XU Caijun 2 LI Zhicai 2 |
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| Abstract: | In this paper,approximate average rate of deformation in the Himalaya Block is determined,based on the seismic moment tensors between 1900 and 1999,the seismic strain rate and its direction associated with the seismic deformation using 15 earthquakes are also determined.The shortening and extension rates from GPS data and geological data for the Himalaya Block are compared with above results.As a result,the deformation rates from seismic moment tensors and from GPS velocities and geological data basically agree with each other.It is not only of compressional deformation in N_S direction but also of obvious E_W extension deformation.It is viable for analyzing earthquake potential by comparing with geodetic strain rate and seismic strain rate based on the opinion that strain energy will have been released through earthquake. |
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| Keywords: | seismic moment tensor Himalaya Block deformation kinematics inverting |
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