P-Wave Travel Time Modeling of the Kurile and Japan Subduction Zones

这项研究是针对目前正在进行的关于俯冲带的板块是否穿透到约670公里深度以下的下地幔的争论。这项技术将测量WWSSN和加拿大网络地震记录的旅行时间，并使用完全三维的有限差分算法对它们进行建模。要研究的区域将是千岛和日本俯冲区。仅使用相同站点的相对到达时间将减少参考地球模型的选择、站点延迟和长波长下地幔异常的影响。670公里以下的板块穿透问题是建立地幔对流模型的关键。

This research is aimed at the ongoing debate over whether or not slabs at subduction zones penetrate into the lower mantle below about 670 km depth. The technique will be to measure travel times from WWSSN and Canadian network seismograms and model them using a fully 3-D finite difference algorithm. The area to be studied will be the Kurile and Japan subduction zones. Use of only relative times of arrival at the same stations will reduce the influence of choice of a reference earth model, station delays, and long-wavelength lower mantle anomalies. The question of slab penetration below 670 km is key to formulating convection models of the earth's mantle.