High Resolution Imaging of the Subducted Slab in the Cascadia Convergence Zone Using Teleseismic P Wave Conversions Recorded with a Dense Array of Seismometers

本研究是利用转换远震P波，即接收函数法，对美国俄勒冈州中西部卡斯卡迪亚俯冲带的深部结构进行研究。该实验将通过200公里的帕斯卡尔便携式宽带地震仪密集阵列收集数据。有了这个阵列，实验将能够追踪地壳在被地幔吸收时的演化过程。这些结果将有助于了解俯冲带的构造性质及其相关的地震危险性。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 study the deep structure of the Cascadia subduction zone in western central Oregon by means of converted teleseismic P waves, also known as the receiver function method. The experiment will collect data across a 200 km dense array of PASSCAL portable broad-band seismometers. With the array, the experiment will be able to trace the evolution of the crust as it is being absorbed into the mantle at depth. These results should help to understand the tectonic nature of the subduction zone and its associated seismic hazard. This research is a component of the National Earthquake Hazard Reduction Program.