2005～2009年喀什—伽师地区重力场变化与地震  

Relation between the Variation of Gravity Field and the Earthquake in Kash-Jiashi Area

作　　者：朱治国[1] 王晓强[1] 刘代芹[1] 李杰[1] 祝意青[2] 

机构地区：[1]新疆维吾尔自治区地震局,乌鲁木齐830011 [2]中国地震局第二监测中心,西安710054

出　　处：《地震研究》2011年第2期143-147,254,共5页Journal of Seismological Research

基　　金：新疆维吾尔自治区科学研究和技术开发(含攻关)项目(20074112);新疆地震科学联合基金(200805);新疆地震科学基金(201116)联合资助

摘　　要：分析了2005~2009年喀什—伽师地区10期流动重力测量资料,研究了重力场的时空动态演化特征,并提取与地震活动有关的信息,进一步探讨重力场变化与构造活动及地震活动的关系,结果表明：重力场变化与构造环境变化有关——地震孕育、发生阶段,其重力场出现一定范围的区域性重力异常。重力测量可以较好地反映由活动断层的物质迁移和构造形变引起的地表重力变化。Using ten terms of mobile gravity data from 2005 to 2009 in Kashi-Jiashi area,we study the temporal and spatial dynamics of gravity field to find the seismic information,then we discuss the relation between the gravitational variation and the tectonmic activity and the relation between the gravitational variation and seimicity.We find that the variation of the gravitational field is related to the tectonic settings;in the stage of seimogenesis,a certain scope of regional gravitational anomaly appears.The gravitational variation is closely related to the tectonic activity and the gravitational variation of the earth＇s surface may be caused by material migration accompanied by faults＇ activity and crustal activity.

关 键 词：重力场 流动重力 重力变化 地震活动 喀什—伽师地区 

分 类 号：P315.75[天文地球—地震学]