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地震 ›› 1998, Vol. 18 ›› Issue (3): 274-280.

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位错引起的大地水准面变化

孟国杰, 刘桂萍, 杨文政   

  1. 中国北京100036 中国地震局分析预报中心
  • 收稿日期:1997-10-09 修回日期:1998-02-16 出版日期:1998-07-31 发布日期:2022-09-08
  • 作者简介:孟国杰,男, 1969年7月出生, 1997年博士生,主要从事地壳形变前兆分析研究及地震预报工作。

GEOID CHANGES CAUSED BY DISLOCATIONS

Meng Guojie, Liu Guiping, Yang Wenzheng   

  1. Center for Analysis and Prediction, CSB, Beijing 100036, China
  • Received:1997-10-09 Revised:1998-02-16 Online:1998-07-31 Published:2022-09-08

摘要: 从动态的观点介绍了大地水准面的物理意义。用数值分析方法计算了常见的几种断层位错导致的大地水准面局部变化的分布图像,并着重研究了断层位错的倾角与大地水准面变化之间的关系。另外,还研究了扩容引起的大地水准面的变化,最后讨论了利用海洋验潮资料和卫星测高以及雷达测高资料监测海域及海洋沿岸孕震区局部大地水准面的可能性,认为这对地震监测预报具有实际意义。

关键词: 位错, 大地水准面, 扩容, 地震监测

Abstract: The physical sense of dynamical geoid is discussed and the patterns of local geoid changes due to several faulting dislocations are studied by using the numerical analysis method. The relation between fault dislocations and geoid changes is emphatically studied. Moreover, the geoid changes caused by dilatancy are also studied. At last , the possibility to monitor local geoid changes of seismogenic zone in the fields of sea and seashores by means of tide-gauge observation, satellite altimetry and radar altimetry is deeply discussed and it is thought that the means is of very impotent significance in monitoring and predicting earthquakes.

Key words: Dislocation, Geoid, Dilatancy, Earthquake monitoring