华北地区壳内磁性构造与地震的探讨  

Crustal magnetic structure and earthquakes in North China

作　　者：张先[1] 刘敏[1] 赵丽[1] 

机构地区：[1]中国地震局地球物理勘探中心,河南郑州450002

出　　处：《地震》2000年第4期50-56,共7页Earthquake

基　　金：国家自然科学基金!(4 9774 2 30 )资助;中国地震局地球物理勘探中心科研成果!(RCEG2 0 0 0 4 )

摘　　要：通过带通滤波技术对华北地区航磁异常进行处理 ,分离出深、浅部磁性层异常 ,然后运用视磁化强度反演方法和程序 ,对组成上下磁性层的构造块体进行了圈定 ,并结合人工地壳测深及深部流体研究进行了讨论 ,认为地震是构造块体相互作用、应力积累、能量释放的结果 。In this paper, aeromagnetic anomaly is processed with band pass filtering technique, and deep/shallow magnetospheric anomaly is discerned. Then the tectonic blocks forming the upper and lower magnetospheres are delimited by using apparent magnetic intensity inverse method and procedure. After an investigation in the light of DSS and deep fluid study, we conclude that earthquakes result from interaction of tectonic blocks, stress accumulation and energy release; deep fluid provides the possibilities to form the multi layered decollement and seismic energy accumulation.

关 键 词：磁性构造 视磁化强度 深部流体 地震成因 

分 类 号：P318.5[天文地球—固体地球物理学] P315.1[天文地球—地球物理学]