STUDY ON STRAIN FIELD AROUND ZHANGJIAKOU-BOHAI SEISMIC BELT WITH LEAST-SQUARE COLLOCATION
Jin Honglin 1) ; Hu Xinkang 2) ;and Wang Yuebing 1)
1)Institute of Earthquake Science, CEA， Beijing 100036;2)First Crust Monitoring and Application Center, CEA, Tianjin 300180
Abstract We collected and combined all mobile GPS data between 1999 and 2009 around ZhangjiakouBohai seismic belt, and obtained the velocities at 143 stations. At the same time,we constructed a regional strain field of the ZhangjiakouBohai seismic belt region with leastsquare collocation, and investigated the slip rate of ZhangjiakouBohai belt. The study results show that: 1) the regional maximum displacement is about 5 mm/a,2) ZhangjiakouBohai seismic belt is creeping in with leftlateral slip rate of 2.0 mm/a and the creeping depth is in a range of 25-45 km,3) The maximum shear strain is 3×10 -8 /a in BeijingTianjin and Tangshan area.
Key words ：
Zhangjiakou-Bohai seismic belt
leastsquare collocation
strain field
leftlateral slip rate
GPS
Received: 01 January 1900
Corresponding Authors:
Jin Honglin
Cite this article:
Jin Honglin ,Hu Xinkang ,and Wang Yuebing . STUDY ON STRAIN FIELD AROUND ZHANGJIAKOU-BOHAI SEISMIC BELT WITH LEAST-SQUARE COLLOCATION[J]. , 2012, 32(2): 7-10.
Jin Honglin ,Hu Xinkang ,and Wang Yuebing . STUDY ON STRAIN FIELD AROUND ZHANGJIAKOU-BOHAI SEISMIC BELT WITH LEAST-SQUARE COLLOCATION[J]. jgg, 2012, 32(2): 7-10.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2012/V32/I2/7
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