华南地区地震活动与K-N地层分布关系研究  

The Relationship Between Seismic Activity and Distribution of the K-N Strata in South China

作　　者：夏志远[1] 潘华[1] 李金臣[1] 

机构地区：[1]中国地震局地球物理研究所,北京100081

出　　处：《震灾防御技术》2010年第4期387-397,共11页Technology for Earthquake Disaster Prevention

基　　金：地震行业专项(200708003)<核电厂地震安全问题研究>;国家科技支撑计划项目(2006BAC13B01)资助

摘　　要：华南内陆地区地震活动以中强地震为主,第四纪以来活动断裂不发育,因此,对发震构造条件的认识存在较大不确定性。本文着[于中生代以来构造]化进程对形成本地区地质构造背景和地震活动特征的重要意义,统计分析了该地区地震活动分布与K-N地层的关系。结果表明,两者之间具有非常显著的相关性,可以将K-N地层分布区作为该地区发震构造鉴定和潜在震源区划分的重要条件之一,并初步认为华南地区特殊的地质构造演化历史是该地区K-N地层分布区地震活动性较强的主要原因。The seismic activities in southern China inland are characterized by moderate earthquakes,where the Quaternary active faults do not develop.As the results,there is a great deal of uncertainty in understanding the seismogenic structure in this area.This article focuses on the significance of the structural evolution process since the Mesozoic era to the background of geological structure and seismic activity characteristics,and then statistically analyzes the relationship between the distribution of seismic active regions and the K-N strata.The result shows that there is significant correlation between them,and the distribution of the K-N strata can be taken as one of the important indexes for identifying seismogenic structures and delineating potential seismic source area.

关 键 词：中强地震 小震密集区 发震构造 K-N地层 

分 类 号：P315.5[天文地球—地震学]