DISCRIMINATION BETWEEN POSTSEISMIC EFFECT AND
EARTHQUAKE PRECURSOR OF VERTICAL DEFORMATION
Second Monitoring and Application Center,CEA,Xi’an 710054
Abstract Discrimination between post-seismic effect and earthquake precursor of vertical deformation after large earthquake was analyzed with the regional leveling and fault-crossing leveling data before and after Ms 8.1 earthquake in Qinghai-Xinjiang area and Wenchuan Ms8.0 earthquake in the northeast margin of Qinghai-Tibet.The results show that: Post-seismic effect was reflected by counterinheritance motion of mountain decreased and basin uplift,it indicates that the tectonic stress field “weak compressing” or “relaxation” before big earthquake;And earthquake precursor of vertical deformation was reflected by inheritance motion of ascending and descending differently,it indicates an intensive trend of tectonic stress field before big earthquake.
Key words :
vertical deformation
post-seismic effect
earthquake precursor
anomaly of deformation
discrimination
Received: 08 April 2013
Published: 13 December 2013
Cite this article:
$author.xingMing_EN,$author.xingMing_EN,$author.xingMing_EN. DISCRIMINATION BETWEEN POSTSEISMIC EFFECT AND
EARTHQUAKE PRECURSOR OF VERTICAL DEFORMATION[J]. jgg, 2013, 33(6): 5-9.
$author.xingMing_EN,$author.xingMing_EN,$author.xingMing_EN. DISCRIMINATION BETWEEN POSTSEISMIC EFFECT AND
EARTHQUAKE PRECURSOR OF VERTICAL DEFORMATION[J]. jgg, 2013, 33(6): 5-9.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2013/V33/I6/5
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