ON EARTHQUAKES PREDICTING BY USING MULTI-SCALE
DECOMPOSITION TECHNIQUE
Second Crust Monitoring and Application Center,CEA,Xi’an 710054
Abstract Dynamic gravity variation in the northeastern margin of QinghaiTibet plateau during 1994~1995、2002~2003 and 2011~2012 were decomposed by using multiscale decomposition technique of discrete wavelet.Based on this result,gravity anomalies were mainly analyzed for Yongdeng Ms5.8 earthquake on Jul.22,1995、Minle Ms6.1 earthquake on Oct.25,2003 and Wuwei Ms4.9 earthquake on May.11,2012.The result shows that the three earthquakes are reflected effectively by the 4order detail.Gravity anomalies near the epicenters are more obviously in 4order wavelet details,which appear widely in the dynamic patterns of gravity field.The result is significant for determining the potential seismic rick.
Key words :
repeated gravity observation
gravity variation field
earthquake
multi-scale wavelet decomposition
the northeastern margin of Qinghai-Tibet plateau
Received: 16 September 2013
Published: 22 July 2014
Cite this article:
Guo Shusong,Liu Fang,Zhu Yiqing. ON EARTHQUAKES PREDICTING BY USING MULTI-SCALE
DECOMPOSITION TECHNIQUE[J]. jgg, 2014, 34(4): 34-38.
Guo Shusong,Liu Fang,Zhu Yiqing. ON EARTHQUAKES PREDICTING BY USING MULTI-SCALE
DECOMPOSITION TECHNIQUE[J]. jgg, 2014, 34(4): 34-38.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2014/V34/I4/34
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