海城盖州地区速度结构和震源位置的联合反演研究

Abstract

Abstract: There are several M_L4.0 earthquakes occurred in the Gaizhou area, Liaoning province from Feb.2, 2012 to Apr. 30,2013. This earthquake sequence shows a roughly NW-trending distribution. We use eart hquake observation reports recorded by regional seismic stations during the period from 2008 to 2013. Through simul taneous inversion method of ear thquake hypocenters and velocity structure, we got the eart hquake location and velocity structure of Gaizhou and Haicheng area by software Simulps14. The result of earthquake location shows that Gaizhou ear thquake warm occurred in a shallower depth, and over time, to the northwest trending. The Gaizhou's underground velocity structure is similar to Haicheng' s underground velocity structure. We think that the Gaizhou earth-quake swarm occurred in a new and smaller fault similar to the Dayanghe fault.

Key words: Simultaneous inversion, Velocity structure, The Gaizhou earthquake swarm

CLC Number:

P315.7

WANG Liang, ZHOU Long-quan, JIAO Mingruo, CAO Fengjuan. Simultaneous Inversion for Earthquake Hy pocenters and V elocity Structure in the Haicheng and Gaizhou Area,Liaoning Province[J]. EARTHQUAKE, 2014, 34(3): 13-26.

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Simultaneous Inversion for Earthquake Hy pocenters and V elocity Structure in the Haicheng and Gaizhou Area,Liaoning Province

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