论文部分内容阅读
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 surveying can provide high-precision space-time images, but the predecessor comparative studies have not been further developed.Based on the linear spherical block model theory, based on previous studies on the active blocks, the 3D block geometric model in the northeastern margin of the Qinghai-Tibet Plateau is established. Based on the GPS horizontal velocity field data from 1999 to 2007, the long-term slip rates of the main active faults and the spatial distributions and coupling changes of the generalized Haiyuan fault zone are retrieved by inversion. The above results are obtained from the northeastern margin of the Qinghai-Tibet Plateau Nowadays, the kinematics of motion deformation and the mid-long term risk prediction of strong earthquakes provide the constraints and references.