Raw ship-based Multibeam Sonar Data from the Nankai Trough Subduction Zone acquired during R/V Maurice Ewing expedition EW9907 (1999)

This data set was acquired with a ship-based Atlas Hydrosweep DS Multibeam Sonar system during Maurice Ewing expedition EW9907 conducted in 1999 (Chief Scientist: Dr. Nathan Bangs). These data files are of MBSystem Compatible format and include Swath Bathymetry data that have not been processed. Data were acquired as part of the project(s): A 3-D Seismic Investigation of the Aseismic to Seismic Transition along the Eurasian-Phillippine Sea Plate Boundary: U.S.-Japan Cooperative Program, Seismic Velocity, Compaction, and Pore Pressure in Underthrust Sediments, Nankai Subduction Zone, and A 3-D Seismic Investigation of the Sediment-to-Rock Transition and Its Relationship to Nankai Subduction Thrust Seismicity: U.S.-Japan Collaborative Program, and funding was provided by NSF grant(!\r
s): OCE02-41375, OCE02-41380, OCE02-41482, OCE97-30637, OCE98-02264, and OCE98-02295.

本数据集由船载Atlas Hydrosweep DS多波束声呐系统在1999年开展的Maurice Ewing考察航次EW9907期间采集（首席科学家：Nathan Bangs博士）。这些数据文件采用MBSystem兼容格式，包含未经处理的条带测深数据（Swath Bathymetry data）。数据采集作为以下项目的组成部分：欧亚-菲律宾海板块边界无震-地震转换带三维地震调查：美日合作计划；南海海槽俯冲带逆冲沉积物的地震波速、压实作用与孔隙压力研究；南海海槽俯冲带沉积物-岩石转换及其与逆冲地震活动关系的三维地震调查：美日协作计划。资金由美国国家科学基金会（NSF）资助，项目编号为OCE02-41375、OCE02-41380、OCE02-41482、OCE97-30637、OCE98-02264及OCE98-02295。