辽南地区2012—2015年重力时空变化特征分析  

SPATIAL-TIME VARIATION CHARACTERISTICS OF GRAVITY IN SOUTHERN LIAONING PROVINCE DURING 2012-2015

作　　者：李玉森[1] 张丽[1] 杨晓东[1] 邹博[1] 索锐[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》2016年第4期25-31,共7页Journal of Disaster Prevention And Reduction

摘　　要：重力变化是地震监测预报工作的重要内容,本文以辽南地区为例,收集、整理了2012—2015年8期流动重力观测资料,通过重力平差计算,来研究区域重力场时空变化、重力点值时序变化和段差值时序变化等,分析重力场的时、空、强变化特征。判定潜在地震发生的高风险区域。结果显示盖州—大石桥—海城地区和明阳—庄河—魏屯地区重力变化起伏较大,异常明显,应给予密切关注。Gravity change is an important content of earthquake monitoring and prediction. This paper collected and sorted out 8 phase mobile gravity observation data in southern Liaoning Province during 2012- 2015.We studied regional space-time variation of gravity field, gravity values of temporal variation and difference of temporal variation etc; analysised of gravity field, spatial and intensity variations by gravity adjustment calculation. Finally determined the high risk area of potential earthquake. Results show：the change of gravity in Dashiqiao Haicheng Gaizhou area and the Ming Yang Zhuanghe Wei Tun area is larger, and the anomaly is obvious, Should pay close attention to these region.

关 键 词：重力场 时空变化 辽南地区 

分 类 号：P312.1[天文地球—固体地球物理学]