GRAVITY VARIATION BEFORE WENAN Ms5.1 EARTHQUAKE
Sun Mingxin, Liu Shanhua and Yang Huaining
National Earthquake Response Suppor Service, Beijing 100049
Abstract The anomalous variation and dynamic evolution characteristics of the gravity field in the Capitol region in the seismogenic process of the Wenan Ms5.1 earthquake on July 4,2006 are studied. The results show that the updownup variations of gravity before earthquake are the obvious reflection of mediumshoutterm anomaly. The dynamic patterns of gravity field reflect clearly the evolutionary process of the gravity field: quasihomogeneous statenonhomogeneous stateearthquake occurrence.There is similar evolution characteristics of the gravity field between Wenan Ms 5.1 earthquake and of Luanxian ML5.0 earthquake on January 20,2004.
Key words :
Wenan earthquake
gravity anomaly
variation of gravity field
seismogenic body impending
evolution characteristics
Received: 01 January 1900
Corresponding Authors:
Sun Mingxin
Cite this article:
Sun Mingxin,Liu Shanhua and Yang Huaining,$author.xingMing_EN. GRAVITY VARIATION BEFORE WENAN Ms5.1 EARTHQUAKE[J]. , 2008, 28(2): 16-21.
Sun Mingxin,Liu Shanhua and Yang Huaining,$author.xingMing_EN. GRAVITY VARIATION BEFORE WENAN Ms5.1 EARTHQUAKE[J]. jgg, 2008, 28(2): 16-21.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2008/V28/I2/16
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[11]
. [J]. jgg, 2017, 37(增2): 115-122.
[12]
. [J]. jgg, 2017, 37(增2): 128-133.
[13]
. [J]. jgg, 2017, 37(增1): 43-48.
[14]
. [J]. jgg, 2017, 37(增1): 88-91.
[15]
ZHENG Zhijiang,CHEN Juzhong,JI Jing. Research on Regional Deformation Anomalies before the Wen’an MS5.1 Earthquake
[J]. jgg, 2017, 37(6): 575-579.