Images

Shaded relief image of Woods Hole, MA

Swath bathymetry and derivative products such as slope, hillshaded relief, and rugosity maps provide information not only on water depth, but also the roughness and smoothness of the sea floor, which correlates with sea floor texture and depositional environment.

 Inner continental shelf sediment textures within western Massachusetts Bay classified using Barnhardt and others (1998). Bottom photographs A-D show sediment texture in select locations (photograph locations are shown as white dots on the sediment texture map).

Sediment texture and distribution data were mapped qualitatively in Esri ArcGIS using a hierarchical methodology. Backscatter data were the first input, followed by bathymetry, surficial geologic and shallow stratigraphic interpretations, and photograph and sample databases. DEM, digital elevation model.

Beach front houses on Fire Island, NY

A NOAA image of the bathymetry north of Puerto Rico. Two ancient submarine landslides are visible as head scarps (labeled Loiza and Arecibo Amphitheaters). Seafloor fissures are indicated by black arrows, and dashed lines outline debris flows from past failures. Map annotated by Uri ten Brink, USGS

Didemnum vexillum

Shaded relief image of Red Brook, Massachusetts Harbor

Shaded relief image of Quicks Hole, Massachusetts

Digital still photograph from Massachusetts Bay near Cohasset, MA, showing seastars (Asterias sp.), blood stars (Henricia sanguinolenta), blood drop tunicates (Dendrodoa carnea), mussels, and barnacles on cobbles and boulders covered with bubblegum algae and red filamentous algae. Water depth at this location is approximately 19.6 meters. 

Seafloor photos off MA coast

Some Boston University Marine Program students sailed on the SSV Corwith Cramer, which they saw at a nearby dock during their tour.

Shaded relief image of Nahant to Gloucester, MA

Shaded relief image of the Outer Cape Cod, MA

Storage vans, referred to as the "Freezer Farm" sit outside the Woods Hole Science Center 

Swath bathymetric map of the Cape Fear submarine slide, the largest slide on the US Atlantic coast. Data were collected on the R/V Atlantis in 2003.

Lab setup aboard R/V Gyre in the Gulf of Mexico from the 2003 field season.   Computers, recorders, and other electronic gear are securely mounted in racks or on tabletops and shelving for stability in rolling seas and for access.

Aerial view of Assateague Island, looking north. Ocean City, Maryland, is visible in the far distance at top. Sinepuxent Bay lies between the island’s western shore and the Delmarva Peninsula to the upper left. Photograph taken in 1998 

1977 USGS multichannel seismic line showing slope failures on the US Beaufort Margin, the location that Kayen and Lee (1991) analyzed in their initial paper on submarine slides and gas hydrates.