Collaborative Research: Seismic Studies of the Continental Lithosphere and Subducting Plate Beneath Central Peru

本研究是分析在安第斯山脉中部的平俯冲和再俯冲带上方的Subandean省和东秘鲁盆地运行的数字三分量局部阵列在几个月的时间里记录的体波相位。分析将包括利用最近开发的合成地震记录确定性计算技术对体波地震记录进行系统的解释和反演。在平坦俯冲区域外的倾斜板块构造将通过三维射线追踪程序进行研究，该程序结合了一阶不连续面的转换和反射。安第斯体系为研究大陆动力学的许多基本问题提供了独特的机会，包括地震危险性、俯冲板块的精细结构和性质、覆盖岩石圈及其之间的界面。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 analyze body wave phases recorded over a period of several months by a digital three-component local array operated in the Subandean Province and East Peru Basin above the zone of flat subduction and resubduction in the central Andes. The analysis will include a systematic interpretation and inversion of body wave seismograms making use of a recently developed technique for the deterministic calculation of synthetic seismograms. Dipping plate structures outside the region of flat subduction will be studied by means of 3-D ray tracing routines which incorporate conversions and reflections at first-order discontinuities. The Andean system offers unique opportunities for the study of many fundamental problems of continental dynamics including earthquake hazard, and the fine structure and properties of the subducting slab, the overriding lithosphere and the interface between them. This research is a component of the National Earthquake Hazard Reduction Program.