辽宁阜新矿震震源区及附近介质变化研究  

Study on Media Variation of Mine-earthquakes Source Area and Nearby in Fuxin,Liaoning Province

作　　者：邵媛媛[1] 王亮[1] 曹凤娟[1] 王岩[1] 翟丽娜[1] 杨牧萍 SHAO Yuan-yuan;WANG Liang;CAO Feng-juan;WANG Yan;ZHAI Li-na;YANG Mu-ping(Earthquake Administration of Liaoning Province, Liaoning Shenyang 110034, China)

机构地区：[1]辽宁省地震局,辽宁沈阳110034

出　　处：《防灾减灾学报》2017年第4期27-31,共5页Journal of Disaster Prevention And Reduction

摘　　要：收集2008年11月至2015年5月辽宁阜新地区矿震M_L≥2.0的矿震数据,利用重复地震的方法研究辽宁阜新矿区震源区及附近介质震源地震波传播路径上介质随时间的变化,探讨在发生较强矿震前介质的变化,研究结果发现,在发生M_L3.3级较强矿震前,部分台站记录的P波震相走时差曲线存在下降趋势和负异常,反映在较强矿震发生前,介质应力集中,促使较强矿震的发生。The mine-earthquakes with ML ≥ 2.0 from November 2008 to May 2015 occurred in Fuxin, liaoning Province are collected .We researched the media variation with time of mine-earthquakes source area and nearby by using repeated earthquakes,then discuss the P-wave travel time difference changes of the repeated earthquakes .The results show that before the mine-earthquakes with ML ≥ 3.3, a downward trend and the low value abnormal change of the p-wave travel time were found at some seismic stations. It reflects that the media velocity increase and the stress concentration before the stronger mine-earthquakes.

关 键 词：辽宁矿震 重复地震 介质 

分 类 号：P315.6[天文地球—地震学]