断层逸出气CO_2的有感小震前兆异常及预报意义  

Precursory Abnormalities of Gas CO_2 Escaped from Faults Before Human-Felt-Small-Earthquakes and Its Significance in Earthquake Prediction

作　　者：殷世林[1] 

机构地区：[1]苏州市地震局,江苏苏州215000

出　　处：《防灾减灾工程学报》2003年第3期76-79,共4页Journal of Disaster Prevention and Mitigation Engineering

摘　　要：简要介绍了目前国内断层逸出气CO2的主要观测状态与观测方法。给出了苏州地区近4年来5次有感小震群前断层逸出气CO2的前兆异常特征与典型图像,总结了它的灵敏性及其时、空、强的规律性,分析了它的超前时间、异常幅度、有效监测范围等特征及其对地震预报的实际意义。The methods mainly used in China for observing gas CO2 escaped from faults are briefly introduced. The precursor characteristics and typical images are presented prior to 5 small earthquakes felt by humans in recent 4 years within the territory of Suzhou city, with their sensitivities and timespaceintensity behaviors being derived. The characteristics of gas CO2 escaped from faults are analysed including the occurrence time, the magnitude of abnormality and effective ranges, and their practical values to earthquake prediction are demonstrated.

关 键 词：断层逸出气CO2 前兆异常 地震预报 地震监测 

分 类 号：P315.724[天文地球—地震学] P316[天文地球—固体地球物理学]