Processed ship-based Multibeam Sonar Data (version 2) acquired near the Cascadia Subduction Zone during the Marcus G. Langseth expedition MGL1211 (2012)

This data set was acquired with a ship-based Kongsberg EM122 Multibeam Sonar system during Marcus G. Langseth expedition MGL1211 conducted in 2012 (Chief Scientist: Dr. Suzanne Carbotte). These data files are of MBSystem format and include Acoustic Backscatter, Sidescan, and Swath Bathymetry 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 2.4. Data were acquired as part of the project(s): Collaborative Research: Imaging the Cascadia Subduction Zone: A Ship-to-shore Opportunity and Collaborative Research: Evolution and hydration of the Juan de Fuca crust and uppermost mantle: A plate-scale seismic investigation from ridge to trench, and funding was provided by NSF grant(s): OCE10-29305, OCE10-29411, EAR11-47622, and EAR11-47975.