晋冀豫交界地震定位和一维速度模型研究  

Earthquake Positioning and 1D Velocity Model Research in the Juncture of Shanxi,Hebei,and Henan Provinces

作　　者：闫睿[1,2] 万永革[1] 黄骥超[1] 李祥[1] 崔华伟[1] 高熹微[1] 

机构地区：[1]防灾科技学院,河北三里河065201 [2]河南省地震局洛阳地震台,河南洛阳471023

出　　处：《华南地震》2017年第1期54-61,共8页South China Journal of Seismology

基　　金：汶川地震前后的应力场时空演化研究(项目编号:41674055)

摘　　要：采用最小一维速度模型方法,基于2008到2014年间河南及其周边台网记录的晋冀豫交界地区165次地震的994个P波到时资料,对该地区的震中和P波一维速度结构进行联合反演,得到相对稳定的P波最小一维速度模型、台站走时校正值,重新定位后的地震位置更加集中在林县断裂和磁县断裂交界及其附近,且地震分布与断层的走向一致。得到的台站校正值在山区多为正,表明地下有低速物质,而在AY、YON、XX、PY、QF处台站校正值为负,表明地下有高速物质。Based on the 994 P wave arrival times of 165 earthquakes occurred in Henan province and its neighboring area recorded by the Henan seismic network and 1D velocity model method, the paper got a relatively stable P wave ld Minimum velocity model, stations correction and accurate earthquake through simultaneous inversion of epicenter and ID P-wave velocity structure. The results show that earthquakes concentrated in the Linxian fault and Cixian fault, and earthquakes distribution is consistent with the strike of fault; station correction value are mostly positive in the mountains, indicating that there are low-speed material underground the mountains, while in AY, YON, XX, PY, QF station correction value is negative, indicating

关 键 词：地震定位 最小一维速度模型 晋冀豫交界地区 台站校正 

分 类 号：P315.7[天文地球—地震学]