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地震 ›› 2009, Vol. 29 ›› Issue (2): 32-39.

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形变综合观测对地表构造变形的定量分析

张晶, 江在森, 方颖, 王武星   

  1. 中国地震局地震预测研究所, 北京 100036
  • 收稿日期:2008-07-15 修回日期:2008-09-01 出版日期:2009-05-31 发布日期:2021-10-18
  • 作者简介:张晶(1963-), 女, 北京市人, 研究员, 主要从事地壳形变与地震预测等研究。
  • 基金资助:
    “十一五”国家科技计划支撑项目(2006BAC01B02-02-05)资助

Quantitative Analysis of Groud Tectonic Deformation Using Combined Geodetic Survey Data

ZHANG Jing, JIANG Zai-sen, FANG Ying, WANG Wu-xing   

  1. Institute of Earthquake Science, CEA, Beijing 100036, China
  • Received:2008-07-15 Revised:2008-09-01 Online:2009-05-31 Published:2021-10-18

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摘要： 文中应用GPS、 断层观测速率分析断裂带变形的方法, 定量计算断裂带两侧单元的滑动和应变率, 同时其点位分布、 断层约束、 时间尺度归化对计算结果的影响等问题进行了对比研究。 利用1999—2001年、 2001—2004年、 2004—2007年GPS区域网速度场资料以及同期跨断层观测资料对鲜水河断裂带的滑动率、 应变率进行试算, 结果显示1999—2001年、 2004—2007年鲜水河断裂南段出现应变率增大和应变轴转向。

关键词: 形变综合观测, 构造变形, 应变率, 鲜水河断裂

Abstract: In this paper, the method for analyzing the tectonic deformation of active rupture zone was discussed using GPS and cross fault survey data. This method can quantitatively calculate the slip rate and strain rate in each unit of both sides of the fault. Meanwhile, the effects of GPS station distribution, fault constraints and temporal scale normalization on the calculated results were comparatively studied. By using the velocity data of local GPS network and cross fault survey data during 1999—2001, 2001—2004 and 2004—2007, the slip rate and strain rate in the Xinshuihe fault zone were calculated. The results show that high strain rate was appeared and the strain axis turned in 1999—2001, 2004—2007 in the southern Xianshuihe fault.

Key words: Combined deformation survey data, Tectonic deformation, Strain velocity, Xianshuihe fault

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