Investigations of Oblique Plate Convergence

本研究旨在通过对地震资料的分析，探讨与倾斜板块汇聚有关的变形，重点是印度尼西亚苏门答腊岛。在苏门答腊调查的基础上，研究了其他斜板块俯冲带的地震滑动矢量方向模型。在苏门答腊和阿留申俯冲带之间可以看到相似之处。由美国国家科学基金会和印度尼西亚政府支持的地震数据与GPS调查的比较，将提供应变场和由此产生的地震活动的约束条件。这项研究是国家减少地震危害计划的一个组成部分。

This research is to investigate deformation associated with oblique plate convergence, with emphasis on Sumatra, Indonesia, by analysis of seismological data. A model of earthquake slip vector direction, based on Sumatra investigations, is to be investigated for other oblique plate subduction zones. Similarities are seen between the Sumatra and Aleutian subduction zones. Comparison of the seismic data with GPS investigations, supported by NSF and the Indonesian government, will provide constraints on the strain field and resultant earthquake activity. This research is a component of the National Earthquake Hazard Reduction Program.