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《地震学报(英文版)》 1998-02
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Ambient tectonic shear stress field in Southern California and seismic hazard regions

PEISHAN CHEN LEI XIAO TONGXIA BAI JIN CHENG Institute of Geophysics, State Seismological Bureau, Beijing 100081, China  
ccording to the fracture mechanics rupture model of earthquakes put forward by us, several equations to compute tectonic ambient shear stress value τ0 have been derived [equations (1), (2), (3), (5)].τ0 values for intermediate and small earthquakes occurred in Chinese mainland and Southern California have been calculated by use of these equations. The results demonstrate that the level and distribution of τ0 are closely related to the location where large earthquakes will occur, i.e. the region with higher level of τ0 will be prone to occur large earthquakes and the region with lower level will usually occur small earthquakes. According to the spatial distribution of τ0 , the seismic hazard regions or the potential earthquake source regions can in some degree be determined. According to the variation of τ0 with time, the large earthquake occurrence time can be roughly estimated. According to the distribution of τ0 in Southern California and variation with time, three high stress level regions are determined, one (Goldfield area) of them is the present seismic hazard region.
【CateGory Index】: P315.1
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Chinese Journal Full-text Database 1 Hits
1 SHAO-JIN WANG (Seismological Bureau of Yunnan Province, Kunming, Yunnan 650041, China)XIAO-FAN LONG(Seismological Bureau of Yunnan Province, Kunming, Yunnan 650041, China);Dynamic variation of ambient shear stress field before and after three strong earthquakes in Yunnan[J];地震学报(英文版);1999-02
Chinese Journal Full-text Database 2 Hits
1 CHEN PEI-SHAN (Institute of Geophysics, State Seismological Bureau);AN ESTIMATION OF CRUSTAL STRESS VALUE FROM ANALYSIS OF SEISMIC WAVES[J];Acta Seismologica Sinica;1981-03
2 Pei-Shan CHEN;Tong-Xia BAI; and Lei XIAO (Institute of Geophysics,State Seismological Beijing, 100081, China);In search of potential earthquake source regions in the Chinese mainland in the light of ambient shear stress field[J];地震学报(英文版);1995-03
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