2010年山西河津4.8级地震前兆异常分析  

Analysis of Precursors for the 2010 Hejin M4.8 Earthquake

作　　者：高振强[1,2] 李艳[3,2] 刘国俊[1,2] 王向阳[1,2] 程冬焱[4,2] 

机构地区：[1]山西省地震局夏县中心地震台,山西夏县044400 [2]太原大陆裂谷动力学国家野外科学观测研究站,山西太原030025 [3]山西省地震局临汾中心地震台,山西临汾041000 [4]山西省地震局,山西太原030021

出　　处：《山西地震》2013年第1期13-15,20,共4页Earthquake Research in Shanxi

基　　金：2010年中国地震局科研监测预报合同制课题部分内容

摘　　要：通过对2010年河津4.8级地震前周边台站前兆测项资料进行梳理、分析,发现震前临汾台短水准观测曲线先后呈加速—持平—转折—发震的典型异常图像,且与2003年洪洞4.9级地震前异常图像相类似;其他"十五"改造新增的形变、流体、地电等学科手段也存在多台项短期或短临异常,异常主要分布在山西、陕西2省5个台站,涉及多项前兆仪器;并利用地震行业网络资源共享的优势,采用陕西省部分地震台站的观测数据进行分析,使文章的研究结果更具科学性和准确性。Based on sorting and analysis of various precursor data from surrounding stations for the 2010 Hejin M4.8 earthquake, it is found that typical earthquake abnormal image appeared in short leveling at Linfen Station before the earthquake. The observation curve developed in accelerate-flat-turning, similar with the abnormal case before the 2003 Hongtong M4.9 earthquake images. Meantime, there are multiple short-term or short-impending anomalies in many other observation items, set up or updated in ＂Tenth Five Years Plan＂, such as deformation, fluid, geoelectric means anomalies. The anomalies are mainly distributed in stations of Shanxi, Shaanxi Province, involving a number of precursor instruments. Taking advantage of the seismic industry network resource, shared observation data from seismic stations in Shaanxi Province are used in analysis, which makes results more scientific and the accurate.

关 键 词：前兆仪器 异常特征 测项分析 山西河津4 8级地震 

分 类 号：P315.725[天文地球—地震学]