Processed ship-based Multibeam Sonar Data (version 2) acquired in the Cascadia Focus Site during the Atlantis expedition AT26-04 (2013)

This data set was acquired with a ship-based Kongsberg EM122 Multibeam Sonar system during Atlantis expedition AT26-04 conducted in 2013 (Chief Scientist: Dr. H. Paul Johnson). These data files are of MBSystem format and include Sidescan, Swath Bathymetry, and Acoustic Backscatter data and were processed by the GMRT Team using the open source MB-System multibeam sonar processing software as part of the GMRT Synthesis effort. These data are included in the GMRT Synthesis, version 2.5. Data were acquired as part of the project(s): Thermal Structure of the Cascadia Subduction Zone on the Washington Margin and Thermal Structure of the Cascadia Subduction Zone, Grays Canyon Discovery Corridor, Washington, and funding was provided by NSF grant(s): OCE11-44164 and OCE12-49552.