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地震 ›› 2006, Vol. 26 ›› Issue (2): 68-72.

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昆仑山口西8.1级地震前的区域面膨胀现象

杨林章, 张晶, 郗钦文   

  1. 中国地震局地震预测研究所, 北京 100036
  • 收稿日期:2005-10-12 修回日期:2006-01-06 出版日期:2006-04-30 发布日期:2021-11-01
  • 作者简介:杨林章(1962-), 山西定襄人, 研究员, 主要从事地壳形变、 固体潮及工程技术等研究。
  • 基金资助:
    空间对地观测技术应用实验室建设项目

Surface expansion before Kunlun 8.1 Earthquake

YANG Lin-Zhang, ZHANG Jing, XI Qin-wen   

  1. Institute of Earthquake Science, CEA, Beijing 100036, China
  • Received:2005-10-12 Revised:2006-01-06 Online:2006-04-30 Published:2021-11-01

摘要: 利用GPS连续观测站资料研究了2001年11月14日发生的昆仑山口西8.1地震前的面膨胀现象。 选取了震中周边6个GPS基准站的连续观测资料, 计算了4个三角形的面应变, 并分析了区域面膨胀的空间分布和时变特征, 利用大尺度地面观测资料可能发现地震前存在的区域面(体)膨胀现象, 或可将其作为判断失稳压临界状态前兆的依据。

关键词: 昆仑山口西地震, GPS观测, 区域面膨胀

Abstract: This paper shows the surface expansion phenomenon before Kunlun earthquake on September 14, 2001 by using GPS surveying data. Four adjacent triangles are combined by 6 GPS stations around the epicenter of Kunlun earthquake. Regional surface expansion of the 4 triangles is calculated. Its space distribution and temporal change characteristics are analyzed. The evidence of surface expansion before the earthquake is approved using large scale surveying data. This may be used for judging the precursor of strong earthquakes.

Key words: Kunlun Earthquake, GPS surveying, Surface expansion

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