中国大陆浅源强震分布与地球自转速率变化的关系  

Relation between distribution of shallow strong earthquake in china′s continent and the earth rotation rate variation

作　　者：傅征祥[1] 邵辉成[2] 丁香[1] 

机构地区：[1]中国地震局分析预报中心,北京100036 [2]陕西省地震局

出　　处：《地震》2004年第3期15-20,共6页Earthquake

基　　金："十五"中国地震局重点科研项目(100501 05);地震科学联合基金项目(104016;304065)

摘　　要：考查了1900～2001年中国大陆不同活动地块浅源强震分布与地球自转速率变化的关系,并讨论将其应用在地震趋势预测中的问题。研究结果表明,大陆西部的天山、祁连 柴达木、羌塘 拉萨及川滇地块的强震活动(MS≥7.0)和大陆东部的中朝 鲁东黄海地块和华南地块东边界(东南沿海地震带)东半段中的强震活动(MS≥6.0),大多数(70%以上)发生在地球自转加快的年份中;大陆西部滇东 滇西地块的强震活动(MS≥7.0),以及大陆东部中蒙 华北平原地块和华南地块东边界(东南沿海地震带)的西半段强震活动(MS≥6.0),大多数(67%以上)发生在地球自转减慢的年份中。并且讨论了地球自转速率变化在地震预报中可能作用的R值评分。The relation between the distribution of shallow strong earthquakes in China′s continent from 1900 to 2001 and the rate variation of earth rotation has been investigated in this paper. The results show that most of the strong earthquakes (M≥7.0) in Tianshan, Qilian-chaidamu, Qiantang-Lasa, Chuandian block of western China and most of the strong earthquakes (M≥6.0) in Zhongchao-Ludong, east section of Huanan block of Eastern China occurred in the years with the earth rotation acceleration; most of the strong earthquakes (M≥7.0) in Diannan-Dianxi block of Western China and most of the strong earthquake (M≥6.0) in Zhongmong Huabei, west section of Huanan block of Eastern China occurred in the years with the earth rotation deceleration. And the application of the earth rotation rate variation of earthquake prediction is discussed.

关 键 词：活动地块 浅源强震 地球自转速率 中国 

分 类 号：P315.72[天文地球—地震学]