GRAVITY CHANGES BEFORE LUHUO Ms5.3 ANDQINGCHUAN-WENXIAN Ms5.4 EARTHQUAKES，2011
Zheng Bing;Wang Shuanghong;Su Qin and Li Feifei
Surveying Engineering Institute，Earthquake Administration of Sichuan Province,Yaan 62500
Abstract Dynamic evolution characteristics of the gravity field before Luhuo Ms5.3 on April 10，2011 and Qingchuan-WenxianMs5.4 on November 1，2011 are studied. The result shows that the upspeed upspeed down variations of the gravity field emerged before those earthquakes.The variations of the gravity field formed dense，positive anomaly and closed contours in the place where it is the intersection of Xianshuihe，Longmensan and An’ninghe faults.
Key words ：
gravity field
dynamic evolution characteristics
earthquake
intersection of faults
contours
Received: 01 January 1900
Corresponding Authors:
Zheng Bing
Cite this article:
Zheng Bing,Wang Shuanghong,Su Qin and Li Feifei et al. GRAVITY CHANGES BEFORE LUHUO Ms5.3 ANDQINGCHUAN-WENXIAN Ms5.4 EARTHQUAKES，2011[J]. , 2012, 32(6): 37-40.
Zheng Bing,Wang Shuanghong,Su Qin and Li Feifei et al. GRAVITY CHANGES BEFORE LUHUO Ms5.3 ANDQINGCHUAN-WENXIAN Ms5.4 EARTHQUAKES，2011[J]. jgg, 2012, 32(6): 37-40.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2012/V32/I6/37
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