天文潮汐与地震

吴小平1,2 冒 蔚2 黄 雍3

(1 云南大学地球科学系 昆明 650091)

(2 中国科学院云南天文台 昆明 650011)

(3 云南省地震局 昆明 650041)

摘   要

从三个方面综述了天文潮汐与地震关系的研究,内容包括,日、月、地球的相对位置与地震;天文 潮汐的周期、相位与地震;天文潮汐应力与地震。日、月、地球的相对位置与地震和天文潮汐周期与地震 的研究均属于从体积力的角度考虑问题,主要是从宏观角度揭示地震发生时的日月位置分布有何规律性, 揭示地震发生时间丛集在潮汐周期变化过程中的相位或时段以及地震活动的潮汐周期。天文潮汐应力与地 震的研究从引潮力在地球内部震源处产生的潮汐应力角度出发,着重研究不同类型性质的发震断层与潮汐 应力触发的关系,从物理意义上讲,该研究较深层次地切入了问题的实质。分析了采用某些方法和样本研 究结果不一致性的原因,并提出了进一步研究的方向。

Astronomical Tides and Earthquakes

Wu Xiaoping1,2 Mao Wei2 Huang Yong3

(1 Earth Science Department, Yunnan University, Kunming 650091)

(2 Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011)

(3 Seismological Bureau of Yunnan Province, Kunming 650041)

Abstract

A review on the studies of correlation between astronomical tides and earthquakes is given in three categories, including (1) earthquakes and the relative locations of the sun, the moon and the earth, (2) earthquakes and the periods and phases of tides and (3) earthquakes and the tidal stress. The first two categories mainly investigate whether or not there exist any dominant pattern of the relative locations of the sun, the moon and the earth during earthquakes, whether or not the occurrences of earthquakes are clustered in any special phase during a tidal period, whether or not there exists any tidal periodic phenomenon in seismic activities. By emphasizing the tidal stress in seismic focus, the third category investigates the relationship between various seismic faults and the triggering effects of tidal stress, which reaches the crux of the issue. Possible reasons to various inconsistent investigation results by using various methods and samples are analyzed and further investigations are proposed.

 

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