辽宁地区近期重力场时空演变特征与中小地震震中分布  

SPACE-TIME EVOLUTION CHARACTERISTICS OF RECENT GRAVITATIONAL FIELD AND SMALL EARTHQUAKES EPICENTERS DISTRIBUTION IN LIAONING AREA

作　　者：王永江[1] 李子涛[1] 孔繁强[1] 梁放[1] 戚建勋[1] 底欣欣[1] 

机构地区：[1]辽宁省地震局,辽宁沈阳110034

出　　处：《防灾减灾学报》2013年第3期25-29,共5页Journal of Disaster Prevention And Reduction

摘　　要：利用2008年以来辽宁地区流动重力网观测资料,探讨了该地区重力场时空演化特征与中小地震震中分布的关系,分析认为:(1)测区重力场出现高值异常现象,重力场异常时空动态变化与该区构造活动密切相关;(2)辽宁地区近年来所发生M3.0级以上中小地震震中分布多位于重力异常高值区。Based on the mobile gravity data in Liaoning since 2008, the relationship between the space- time evolution characteristics of gravitational field and moderate-small earthquakes epicenters distribution has been discussed. It is considered that the high value and the abnormal space-time evolution in gravity field are closely related with tectonic activities in this area. In addition, the epicenters of more than M3.0 earthquakes in recent years mostly distributed in high value areas.

关 键 词：流动重力 重力场时空演变 重力异常 中小地震 

分 类 号：P312.1[天文地球—固体地球物理学] P315.5[天文地球—地球物理学]