Auxiliary Experiment for INDEPTH-II - Uppermantle Velocity Anomaly, Shear-Wave Splitting, and Crustal/Mantle Velocity Structures in the Tethyan Himalayas and Southern Tibet

这是一个部署无源宽带地震阵列的项目，以补充西藏藏布江缝合带的岩心反射剖面实验（INDEPTH II -一个资助的CD项目）。该阵列将配备由P.I.提供的12个宽带地震仪从1994年5月开始，将记录8至9个月。尽管反射剖面实验预计将成像逆冲的印度板块顶部，岩石圈地幔部分的行为是未知的。利用pascal型被动源实验，可以对藏南上地幔异常速度结构进行成像。提出的宽带研究的主要目的是寻找西藏南部的地幔下流。＊＊＊

9316358 Ni This is a project to deploy a passive-source broadband seismic array to complement the core reflection profiling experiment (INDEPTH II - a funded CD project) across the Tsangpo Suture in Tibet. The array will be equipped with 12 broadband seismometers contributed by the P.I.'s German colleagues, and will record for 8- 9 months beginning in May, 1994. Although the reflection profiling experiment is expected to image the top of the underthrusting Indian Plate, the behavior of the mantle part of the lithosphere is unknown. The anomalous velocity structure of the upper mantle beneath southern Tibet can be imaged by a passive-source PASSCAL-type experiment. The main objective of the proposed broadband study is to search for the mantle downwelling beneath southern Tibet. ***