延庆、怀来地区地壳深部磁性构造与地震的研究  

A STUDY OF RELATION BETWEEN MAGNETIC STRUCTURE IN DEEP CRUST OF YANQING, HUAILAI AREAS AND SEISMICITY

作　　者：刘明清[1] 刘敏[1] 张先[1] 沈京秀 赵丽[1] 贺为民[1] 虎喜凤[1] 

机构地区：[1]国家地震局地球物理勘探大队

出　　处：《华北地震科学》1994年第3期53-58,共6页North China Earthquake Sciences

摘　　要：应用三维磁性层反演理论和方法，对延庆、怀来地区航磁资料进行了数据处理，反演计算了该区磁性基底埋深、居里等温面埋深和视磁化强度分布。揭示了延庆盆地、矾山盆地、怀来盆地、涿鹿盆地等四个相互联通盆地的磁性基底的定量特征。对该区地震发生的深部原因和地壳内不同物性块体与地震的关系进行了探讨；对该区地震分布的特点进行了研究；初步提出了该区地震的危险区划和今后的重点监测区。Using 3-D magnetosphere inverse theory and method, we process the aeromagnetic data: of Yanqing and Huailai areas, and obtain the buried depth map of Curie isothermal surface and the distribution map of apparent specific magnetizing moment of these areas. The quantitative characteristics of the magnetic basement of the four correlative basins-Yanqing, Fanshan, Huailai and Zhuolu-are revealed. Investigation is conducted into the deep cause for earthquake occurrence and into the relation between crustal blocks with different physical nature and seismicity in these areas. Characteristics, of earthquake distribution in these areas is also studied. Earthquake risk zoning and major zones for future monitoring in these areas are preliminarily POinted out.

关 键 词：地震 磁性构造 地壳深部 延怀盆地 

分 类 号：P318.5[天文地球—固体地球物理学]