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地震 ›› 2000, Vol. 20 ›› Issue (2): 107-111.

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昌平台钻孔应变固体潮调合分析

王勇1, 戴建华1, 段立新2   

  1. 1.中国地震局地壳应力研究所, 北京 100085;
    2.河北省怀来地震台,河北 怀来 075400
  • 收稿日期:1999-07-01 修回日期:1999-09-15 出版日期:2000-04-30 发布日期:2022-09-26
  • 作者简介:王勇(1946-),男,高级工程师,主要从事地震预报研究及台站管理工作。

Harmonic analysis of earth tide of borehole strain data observed at Changping station

WANG Yong1, DAI Jian-hua1, DUAN Li-xin2   

  1. 1. Institute of Crustal Dynamics, CSB, Beijing 100085, China;
    2. Huailai Seismic Station, Seismological Breau of Hebei Province, Huailai 075400, China
  • Received:1999-07-01 Revised:1999-09-15 Online:2000-04-30 Published:2022-09-26

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摘要： 介绍了体应变观测潮汐因子和勒夫数h2之间的线性关系,h2的变化幅度较体应变观测潮汐因子震前异常变化大7.5倍。同时,昌平台剪应变观测潮汐因子O1波与体应变观测潮汐因M2波震前异常有较好的一致性,研究钻孔应变观测潮汐因子的变化有可能是取得地震前兆的有效途径之一。

关键词: 潮汐因子, 体应变, 剪应变, 异常

Abstract: In this paper, we presented the linear relation between tide factor and Love number h2. The v ariational range of h2 is 7.5 times larger than anomalies of tide factor of body strain prior to earthquakes. The changes in tide factor of O1 wave of shearstrain is well consistent with that in M2 wave tide factor of body strain prior to earthquakesat Changping Station. It may be one of the useful methods for extracting anomalies before earthquakes to study the change of tide factor of borehole strain.

Key words: Tide factor, Body strain, Shear strain, Anomaly

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