应变固体潮相位与地震的关系  

Relation Between Phase of Strain Earth Tide and Earthquake

作　　者：王秀文[1] 宋美琴[1] 张瑞芳[1] 康益惠 

机构地区：[1]山西省地震局,山西太原030021 [2]山西孝义市地震局,山西孝义032300

出　　处：《山西地震》2007年第2期21-24,共4页Earthquake Research in Shanxi

基　　金：地震科学联合基金课题(A07099)部分内容

摘　　要：文中选取华北地区46次ML≥5.0地震为参考依据,计算出了其发生时刻的固体潮相位。表明,华北地区的中强地震多数发生在固体潮相位的π/2或3π/2时刻。显示出在固体潮波上存在着两个特殊相位发震概率较大。这种在应变固体潮最大或最小时段发震的现象说明,固体潮波变化形态不一定是造成地震的根本原因,但地震的发生明显受到日月引力等外部条件的影响,尤其是华北北部燕山褶断带的地震最为突出。In this paper, based on selected 46 earthquakes of ML≥5.0 in the North China, the phases o! earth tide when each event occurs are calculated. The results show that most medium strong earthquakes occur when the phase of earth tide is at π/2 or 3π/2, two special phases in wave of earth tide where the probability that a earthquake occur is larger. This phenomenon that earthquakes occur at top or bottom of strain earth tide indicates that variations of earth tide might not be the fundamental factor to produce an earthquake, but the occurrence of earthquakes are obviously effected by some external conditions such as gravity from the sun or moon, especially along the Yanshan fold fault belt in the North China.

关 键 词：固体潮 相位 地震 

分 类 号：P312.4[天文地球—固体地球物理学]