Imaging Deep Slab Structure Using Shear Waves

本研究旨在利用微分残差球程序确定俯冲千岛岩和日本岩石圈板片的横波速度结构。 过去的研究主要集中在纵波速度结构上，关于结果的争议仍然很大，特别是板片是否穿透下地幔。 横波更难测量，但由于仪器的进步，现在可以测量横波。 横波对板块的热结构和化学结构更敏感，可能有助于解决有关地幔动力学的基本问题。

This research is to determine the S-wave velocity structure of the subducting Kurile and Japan lithospheric slabs using differential residual sphere procedures. Past studies have concentrated mainly on P-wave velocity structure, and considerable controversy continues about the results, especially whether the slab penetrates the lower mantle. S-waves are more difficult to measure but are now accessible because of advances in instrumentation. S-waves are more sensitive to the thermal and chemical structure of the slab and may help resolve fundamental questions about mantle dynamics.