利用GPS数据反演青藏高原东北缘主要活动断裂滑动速率

GPS测量可以提供高精度的时空图像, 但前任对比研究尚未深入.通过使用线性球面块体模型理论, 在前人针对活动块体研究的基础上, 建立青藏高原东北缘地区三维块体几何模型.以1999—2007年的GPS水平速度场数据作为约束, 反演得到青藏高原东北缘的主要活动断裂长期滑动速率和广义海原断裂带的空间亏损滑动分布及其耦合变化.上述结果为青藏高原东北缘现今运动变形的动力学和强震中-长期危险性预测研究提供了约束和参考. 

GPS-Constrained Inversion of Slip Rate on Major Active Faults in the Northeastern Margin of Tibet Plateau

GPS mwasurements can provide a high accuracy of spatio-temporal images, but there aren't enough study about it. We use the spherical linear block theory constrained by geodetic observations from Global Positioning System (GPS) stations to estimate fault slip rates on the Northeastern margin of Tibet plateau and spatially variable coupling on Haiyuan fault in abroad sense. The 3D geometric block model is based on the previous researches of active block. The result provides a new constraint and reference for the geodynamics of present crustal deformation and the middle-long term strong earthquake hazard study in this area.