Abstract Using vertical deformation data of longleveling section in recent years at the eastern Guanzhong in Shaanxi province, by the aid of construction and inversion with nonhomogeneous negative dislocation model with stratification changes of dislocation and dip angle, the geometry parameters of the middleeastern segments of Weihe fault are computed. The dynamic evolution of strain energy accumulation and difference between different depths together with the relation to energy release and adjustment influence of the Wenchuan earthquake are studied. The results show as follows: 1)The fault is listric nearly to right angle from earth surface to shallow layer, and the depth is basically consistent with geological data. 2) The strain accumulation is mainly located at uppermiddle layers, displaying obviously before the Wenchuan earthquake, decreased during 2008-2009 probably related to energy release, with reverse related to adjustment after this earthquake during 2009-2010(possibly promoted the Gaoling 4.4 earthquake); up to 2011, this adjustment situation had not ended completely.
Zhang Xi, Zhang Sixin, Li Ruisha et al. INVERSION OF NON-HOMOGENEOUS NEGATIVE DISLOCATION FOR LONG LEVELING SECTION AT MIDDLE-EASTERN SEGMENTS OF WEIHE FAULT[J]. , 2012, 32(5): 1-5.
Zhang Xi, Zhang Sixin, Li Ruisha et al. INVERSION OF NON-HOMOGENEOUS NEGATIVE DISLOCATION FOR LONG LEVELING SECTION AT MIDDLE-EASTERN SEGMENTS OF WEIHE FAULT[J]. jgg, 2012, 32(5): 1-5.
