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.