RELOCATION OF YANGJIANG EARTHQUAKE SEQUENCESWITH DOUBLE-DIFFERENCE LOCATION ALGORITHM
Ye Xiuwei; Liu Jin ;and Hu Xiumin
Earthquake Administration of Guangdong Province, Guangzhou 510070
Abstract The Yangjiang earthquake sequences from January, 2004 to May,2007 were relocated with the double-difference location algorithm. The results show that two ML≥2.0 seismicity belts distributed in Yangjiang area before Yangjiang M4.9 earthquake occurred on 17th September, 2004, the direction of one belt was NNW and the other was NW. The direction of NNW ML≥2.0 seismicity belt was consistent with the direction of nodal plane Ⅱ of focal mechanism and the focal rupture azimuth. The focal depth of NNW seismicity belt deepened gradually in one month before the 4.9 earthquake and it occurred at the southeast edge of NNW seismicity belt.
Key words ：
doubledifference earthquake location
Yangjiang earthquake
seismicity belt
focal depth
focal mechanism solution
Received: 01 January 1900
Corresponding Authors:
Ye Xiuwei
Cite this article:
Ye Xiuwei,Liu Jin,and Hu Xiumin. RELOCATION OF YANGJIANG EARTHQUAKE SEQUENCESWITH DOUBLE-DIFFERENCE LOCATION ALGORITHM[J]. , 2009, 29(6): 60-63.
Ye Xiuwei,Liu Jin,and Hu Xiumin. RELOCATION OF YANGJIANG EARTHQUAKE SEQUENCESWITH DOUBLE-DIFFERENCE LOCATION ALGORITHM[J]. jgg, 2009, 29(6): 60-63.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2009/V29/I6/60
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