Raw ship-based Multibeam Sonar Data from the Nankai Trough Subduction Zone acquired during R/V Maurice Ewing expedition EW9908 (1999)

This data set was acquired with a ship-based Atlas Hydrosweep DS Multibeam Sonar system during Maurice Ewing expedition EW9908 conducted in 1999 (Chief Scientist: Dr. Nathan Bangs). These data files are of MBSystem Compatible format and include Acoustic Backscatter and Swath Bathymetry data that have not been processed. These data are included in the GMRT Synthesis, version 1. Data were acquired as part of the project(s): 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(s): OCE02-41375, OCE02-41380, OCE02-41482, OCE97-30637, and OCE98-02295.本数据集由船载Atlas Hydrosweep DS型多波束声呐系统采集于1999年开展的毛里斯·尤因（Maurice Ewing）航次EW9908，本次航次首席科学家为内森·班斯（Nathan Bangs）博士。本数据集采用MBsystem兼容格式存储，包含未经处理的声学背散射数据与条带测深数据，并已被纳入GMRT合成数据集第1版。本数据为如下研究项目的采集成果：《沉积物-岩石过渡带三维地震调查及其与南海海沟俯冲逆冲断层地震活动的关系——美日合作计划》，研究经费由美国国家科学基金会（NSF, National Science Foundation）的以下拨款资助：OCE02-41375、OCE02-41380、OCE02-41482、OCE97-30637以及OCE98-02295。