High-resolution geophysical data collected along the Mississippi River Delta Front offshore of southeastern Louisiana, U.S. Geological Survey Field Activity 2024-015-FA

High resolution sea-floor bathymetry, backscatter, and sound velocity profile data were collected offshore of southeastern Louisiana aboard the research vessel Thomas O'Brien on September 14-18, 2024 as part of an effort to characterize mudflow hazards on the Mississippi River Delta Front. The survey was the third field program of the Offshore Analysis of Seafloor Instability and Sediments (OASIS) project, a cooperative research effort between the U.S. Geological Survey, the Bureau of Ocean Energy Management, and other Federal and academic partners, to use sea-floor mapping and shallow subsurface imaging tools to document environmental conditions and potential associated hazards to submerged infrastructure and archaeological resources along the Mississippi Delta Front. Approximately 209 kilometers (km) of multibeam bathymetry and backscatter data were collected. Varied mudflow (gully, lobe) and prodelta morphologies were imaged in a nearhsore survey area east of South Pass.