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地震 ›› 2000, Vol. 20 ›› Issue (1): 59-64.

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1966~1976年华北地震的时间特性及相关触发因素

黎凯武   

  1. 中国地震局分析预报中心,北京 100036
  • 收稿日期:1999-04-18 修回日期:1999-09-22 出版日期:2000-01-31 发布日期:2022-09-26
  • 作者简介:黎凯武(1941-),男,副研究员,主要从事地壳形变、固体潮的地震预报研究
  • 基金资助:
    地震科学联合基金资助项目(199035)

Earth rotation and triggering of tidal-generating force for the strong earthquakes in North China

Ll Kai-wu   

  1. Center for Analysis and Predietion CSB,BeiJing 100036,China
  • Received:1999-04-18 Revised:1999-09-22 Online:2000-01-31 Published:2022-09-26

摘要: 阐述了1966-1976年华北地震的时间特性及其相关触发因素——地球自转和引潮力。这是300年来华北地区发生的最强烈的一组地震,强震发生的时间有-个共同的特性:在年尺度上大多数地震发生在季节性地球自转速度极大值或极小值时间点附近,即极点附近(或称极点时段),在月尺度上多数地震发生在朔望附近(或称朔望时段),在日尺度上半数地震发生在极大水平引潮力时刻附近。表明这些地震与地球自转和日月引潮力关系密切。并且证明这些地震与引潮力的关系为触发关系。

关键词: 华北地震, 地球自转, 日月引潮力, 触发作用

Abstract: The triggering of the seasonal changes in the earth rotation rate and thetidal-Generating force from the sun and the moon for the stron gearthquakes in North China has been analyzed in this paper in Hejlan,Haicheng and Tangshan from 1966 to 1976.The research results show that the o-rigin time of the strong earthquakes is related to the porlar time of the seasonal changes in the rotation rate,the time of the spring tide and the time of the maxlmum horlzontal tidal force half一day period. It suggests that earth rotation notrandom, and the tidal forces,which are not random can control the strong earthquakes in North China.

Key words: Strong earthquakes in North China, Earth rotation, Tidal-generating force, Triggering

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