Analysis and Selective Resurvey of the Sumatra GPS Network

小行星9316889 PI和他的博士后同事将分析他们1992年和1993年在苏门答腊和印度尼西亚群岛其他岛屿的GPS区域测量结果，以研究沿着苏门答腊断层和西南弧前地区的地壳变形。 由于全球定位系统卫星群、接收器技术和全球跟踪网络不断改进，这两年对地表变形的估计比前三年任何一年都要准确得多。 通过这种方式，他们可以定性和定量地评估斜向滑动沿着这一板块边缘到正常俯冲和剪切滑动的解耦。 他们还将分析从1990年到1993年沿着沿着五个断层带收集的重复GPS测量数据。 这些小规模的线性阵列补充了区域网络，提供了一个详细的图片近断层应变场在不同的故障段。 ****

9316889 Bock The PI and his postdoctoral associate will analyze their 1992 and 1993 GPS regional measurements from Sumatra and other islands in the Indonesian archipelago to study crustal deformation along the Sumatran fault and the forearc region to the southwest. Continuous improvements in GPS satellite constellation, receiver technology and global tracking networks permit significantly more accurate estimates of surface deformation for these two years than for any of the preceding three years. In this way, they can assess qualitatively and quantitatively the decoupling of oblique slip along this plate margin into normal subduction and shear slip. They will also analyze repeated GPS measurements collected from 1990 through 1993 along five fault transects. These small scale linear arrays complement the regional network by providing a detailed picture of the near-fault strain field at various fault segments. ****