GRAVITY VARIATION OF WESTERN SICHUAN AND WENCHUAN EARTHQUAKE
Zhu Yiqing 1) ;Su Qin 2) ;Liang Weifeng 1) ; and Liu Fang 1)
1)Second Monitoring and Application Center,CEA,Xi’an 7100542)Earthquake Administration of Sichuan Province,Chengdu 610000
Abstract On the basis of mobile gravity observation data from 1998 to 2008 in western Sichuan, spatial dynamic variation results of regional gravity field are obtained, the relations between the gravity variation features and Wenchuan Ms8.0 earthquake are systematically analysised.The results show: 1)gravity change is closely related to active fault tectonics, gravity measurement can reflect material migration accompanying active fault and crustal tectonic activity well. 2) The regional gravity variations in a wide range appeared during Wenchuan earthquake. The dynamic patterns of gravity field mirrored the evolution process of gravity field :quasihomogeneous statenonhomogeneous stateearthquake occurence.
Key words ：
western Sichuan
gravity observation
crustal movement
gravity variation
Wenchuan earthquake
Received: 01 January 1900
Corresponding Authors:
Zhu Yiqing
Cite this article:
Zhu Yiqing ,Su Qin ,Liang Weifeng et al. GRAVITY VARIATION OF WESTERN SICHUAN AND WENCHUAN EARTHQUAKE[J]. , 2010, 30(2): 1-5.
Zhu Yiqing ,Su Qin ,Liang Weifeng et al. GRAVITY VARIATION OF WESTERN SICHUAN AND WENCHUAN EARTHQUAKE[J]. jgg, 2010, 30(2): 1-5.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2010/V30/I2/1
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