Abstract With two coseismic deformation data sets as constraints, one gained from triangulation data and the other from GPS and triangulation data, the single rectangular fault model of the Tonghai earthquake in 1970 is inferred using a simulated annealing algorithm, and then the slip distribution is inferred using bounded variable least square. The results show that, the length of the outcropping, mainly strike slipping rupture of the single rectangular fault inferred from simulated annealing algorithm,is approximately 100 km; its dipping angle is greater than 80°. The positions and depths of maximum slip in the two slip distribution models inferred from bounded variable least square constrained by the two data sets are basically consistent, while slips in southeast section determined from GPS and triangulation data are larger. Maybe some large errors were introduced by the absence of common stations in coordinate transformation, or the deformation in the southeast section is underestimated.
TAN Kai,WANG Qi,YU Jiansheng et al. Preliminary Study Result of the Coseismic Deformation and Rupture Slip of the 1970 Tonghai Earthquake,Yunnan Province[J]. jgg, 2017, 37(4): 331-334.
TAN Kai,WANG Qi,YU Jiansheng et al. Preliminary Study Result of the Coseismic Deformation and Rupture Slip of the 1970 Tonghai Earthquake,Yunnan Province[J]. jgg, 2017, 37(4): 331-334.
