Woods Hole Coastal and Marine Science Center

Map C.  Backscatter intensity and sun-illuminated topography.  Blue= "soft" seabed, Green, orange = "hard" seabed

Stellwagen Bank project research areas in the United States and Canada

Schematic of system designed to control movement and logging of data collected by the Moving Arm Tripod at Martha's Vineyard Coastal Observatory in 2011.

Steaming to the deployment site south of Martha's Vineyard, MA in 2011. The platform shown was specially adapted so the arm cycles up and down through the Benthic Boubdary Layer while deployed on the seafloor.  For more information see https://soundwaves.usgs.gov/2011/11/fieldwork2.html.

Ice conditions in the Arctic from CCGS Louis S. St-Laurent.

USGS scientists assembling a novel profiling arm to measure suspended sediment in the benthic boundary layer. This large seafloor platform was later deployed for several months off Martha's Vineyard, MA as part of the Optics Acoustics and Stress In Situ (OASIS) Project in 2011.

Deploying the airgun array from CCGS Louis S. St-Laurent. USCGC Healy can be seen in the background.

CCGS Louis S. St-Laurent following the path created by USCGC Healy

Electronics for controlling the moving arm in the open pressure housing.

Comparison of observed near-bed velocities and modeled near-bed velocities using several bottom-roughness formulations. Velocity vectors are overlaid on map of backscatter from the sea floor showing regions with coarse sand (light color) and fine sand (dark colors). White lines are bathymetry contours. Mean velocities were averaged over entire period (top panel), flood and

Simulation results for geomorphic change in Suisun Bay, CA (Ganju and Schoellhamer, 2010)