Collaborative Research: Deep Seismic Investigation of Continental Collision in Southern Tibet (INDEPTH II)

在1992年夏季成功完成西藏深部地震剖面的初步研究（INDEPTH I）之后，下一阶段的研究（INDEPTH II）涉及采集和分析大约200公里的深部地震反射剖面，连同互补的广角和脱机（稀疏的3-D）反射数据，以及沿特提斯喜马拉雅北部延伸的地面地质信息，印度河-桑布缝合带。以及西藏南部的冈底斯基。获得的数据将为喜马拉雅/西藏高原碰撞带内大陆地壳变形和增厚的机制提供新的、可能是基本的见解——这是地球上活跃大陆/大陆碰撞的典型例子。本项目将与中国地质矿产部（MGMR）按照同等费用分担的原则合作进行，并将使用MGMR地震反射队进行数据采集，并为广角和离线记录提供震源。在美国方面，该项目将直接资助康奈尔大学和锡拉丘兹大学进行整体项目协调和数据采集/处理，并向斯坦福大学提供广角/离线记录。来自哥伦比亚大学和纽约州立大学奥尔巴尼分校的研究人员也将参与数据解释，与MGMR协调，以及沿样带获取地表地质数据。＊＊＊

9316132 Nelson Following the successful completion in the summer of 1992 of a pilot study (INDEPTH I) of deep seismic profiling in Tibet, the next phase of the study (INDEPTH II) involves the acquisition and analysis of some 200 km of deep seismic reflection profile, together with complementary wide-angle and off-line (sparse 3-D) reflection data, and surface geological information, along a traverse extending across the northern Tethyan Himalaya, Indus- Tsangpo suture zone, and Gangdese batholith in southern Tibet. The acquired data will provide new and possibly fundamental insight into the mechanism by which continental crust is deformed and thickened within the Himalaya/Tibet plateau collision zone-the type example of active continent/continent collision on Earth. The project will be undertaken collaboratively with the Ministry of Geology and Mineral Resources of China (MGMR) on the principle of equal cost sharing, and will use an MGMR seismic reflection crew for data acquisition and to provide the seismic source for wide-angle and off-line recording. On the U.S. side, the program will involve direct grants to Cornell and Syracuse Universities for overall project coordination and data acquisition/processing, and to Stanford University for wide- angle/off-line recording. Investigators from Columbia University and the State University of New York at Albany will also be involved in data interpretation, coordination with MGMR, and acquisition of surface geological data along the transect. ***