利用重复地震研究广东阳江地区地壳介质变化

EARTHQUAKE ›› 2008, Vol. 28 ›› Issue (4): 103-111.

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Monitoring Crustal Media Variation in Yangjiang Area of Guangdong Provinces by Using Repeated Earthquakes

YE Xiu-wei, WEN Ze-gang, LIU Jin, YANG Ma-ling, HU Xin-min

Earthquake Administration of Guangdong Province, Guangzhou 510070, China

Received:2008-01-14 Revised:2008-04-10 Online:2008-10-31 Published:2021-10-29

Abstract

Abstract: In this paper the authors normalized the position of repeated earthquakes by using ray tracing, in order to improve the accuracy of seismic wave travel time to measure crustal media variation with time. The author also calculated the travel time of Yangjiang repeated earthquakes (M_L≥2.0)from Jonuary 2002 to september 2007 by using ray tracing. The results indicate the short-term velocity variation of crustal media appears before Yangjiang M=4.9 earthquake in 2004.

Key words: Repeated earthquakes, Ray tracing, Variation of crustal media, Yangjiang M=4.9 Earthquake

CLC Number:

P315.7

YE Xiu-wei, WEN Ze-gang, LIU Jin, YANG Ma-ling, HU Xin-min. Monitoring Crustal Media Variation in Yangjiang Area of Guangdong Provinces by Using Repeated Earthquakes[J]. EARTHQUAKE, 2008, 28(4): 103-111.

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Monitoring Crustal Media Variation in Yangjiang Area of Guangdong Provinces by Using Repeated Earthquakes

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