前兆场变化在地震空间位置判断上的应用  

Application of the Variation of Precursory Field to the Prediction of the Location of earthquakes

作　　者：廖丽霞[1] 关玉梅[1] 叶晓明[1] 

机构地区：[1]福建省地震局,福州350003

出　　处：《地震研究》2011年第1期19-23,共5页Journal of Seismological Research

基　　金：2009国家自然基金"基于流体地球化学探讨天山地区泥火山成因及其活动与地壳变形作用"(40962006)资助

摘　　要：运用福建前兆观测台网资料,分析了形变应力场和水位震后效应场等前兆场的空间变化规律与福建区域地震的相关性。结果显示,福建多次ML>4.5地震的孕育过程均伴随着形变应力及水位震后效应的成场。研究认为,当形变应力场与水位震后效应场的时空演化规律趋于一致时,这一区域就具备发生中强以上地震的背景条件,跟踪分析形变应力场及水位震后效应场的空间迁移规律,可对未来发生的地震的空间位置做出较为准确的判断。We analyze the relation between the precursory fields such as the deformation stress field and the post-seismic effect field of water level with the earthquakes ever occurred in Fujian area on the basis of the data from the precursor network in Fujian Province,and find that many ML4.5 earthquakes occurred in Fujian area were accompanied by the formation of the deformation stress field and post-seismic effect field of water level.When the migration of the field of post-seismic effect of water level and field of deformation stress are identical,the related area has the probability of medium-strong earthquakes＇ occurrence.Analyzing the migration of post-seismic effect of water level and crustal deformation,we may predict the location of the earthquakes.

关 键 词：前兆场 应力场 水位震后效应 迁移规律 福建地区 

分 类 号：P315.75[天文地球—地震学]