This data set was acquired with a ship-based Kongsberg EM120 Multibeam Sonar system during Nathaniel B. Palmer expedition NBP0703 conducted in 2007 (Chief Scientist: Dr. John Anderson; Investigator(s): Dr. John Anderson and Dr. Bernard Hallet). These data files are of MBSystem Compatible format and include Acoustic Backscatter, Swath Bathymetry, and Sidescan data that have not been processed. Data were acquired as part of the project(s): Collaborative Research: Controls on Sediment Yields from Tidewater Glaciers from Patagonia to Antarctica, and funding was provided by NSF grant(s): OPP03-38137 and OPP03-38371.