Using the GPS velocity data from 27 stations around the Eastern Kunlun fault as constraints, we first invert the slip velocities of the Eastern Kuniun fault, the north boundary fault of the Qaidam basin, the Mani-Yush...Using the GPS velocity data from 27 stations around the Eastern Kunlun fault as constraints, we first invert the slip velocities of the Eastern Kuniun fault, the north boundary fault of the Qaidam basin, the Mani-Yushu fault and the Margai Caka fault before the Kekexili Ms 8.1 earthquake with a 3-D elastic half-space dislocation model. The deformation field calculated from the slip movement of these faults can be considered the deformation background field of the earthquake. Based on the deformation background field with tectonic implications, we have obtained the strain field and earthquake moment accumulation field. The results show that there are two obvious high moment accumulation rate regions, one of which is the Dongdatan- Xidatan segment of the Eastern Kuniun fault where the Ms8.1 earthquake occurred in 2001.展开更多
基金sponsored by the National Natural Science Foundation (40674055),China
文摘Using the GPS velocity data from 27 stations around the Eastern Kunlun fault as constraints, we first invert the slip velocities of the Eastern Kuniun fault, the north boundary fault of the Qaidam basin, the Mani-Yushu fault and the Margai Caka fault before the Kekexili Ms 8.1 earthquake with a 3-D elastic half-space dislocation model. The deformation field calculated from the slip movement of these faults can be considered the deformation background field of the earthquake. Based on the deformation background field with tectonic implications, we have obtained the strain field and earthquake moment accumulation field. The results show that there are two obvious high moment accumulation rate regions, one of which is the Dongdatan- Xidatan segment of the Eastern Kuniun fault where the Ms8.1 earthquake occurred in 2001.
