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Summary Information for Field Activity 2004-002-FA

Area of Operations: Gloucester to Nahant, South Essex Sanctuary, Massachusetts Bay, Massachusetts, United States, North America, North Atlantic

Dates: April 12, 2004 to May 07, 2004

Chief scientist: Brad Butman
Jane Denny


Objectives: Phase I - Complete geophysical mapping of the South Essex Sanctuary (Gloucester to Nahant; 40 m to 10 m water depth). Phase II - Conduct ground validation survey of 100 target stations in the survey area.

Type of Activity: Sampling; Seismic profiling; Sea floor mapping; Photography;Sea floor mapping

Information to be derived: Grain size analysis; Habitat maps; Sea floor map; Bathymetric maps; Morphology;

Summary: Phase I Geophysical Survey: 8 total survey days with Submetrix, Knudsen, EdgeTech. Lost 5 days to rebuilding starboard engine on RAFAEL. Data collected: Submetrix bathymetry/backscatter, EdgeTech sidescan, Knudsen seismic reflection. Phase II Ground Validation: Occupied 100 target stations in 3 survey days, recovered 56 sediment samples. Data collected: bottom video, bottom stills, sediment samples (grain size).

Contact: Brian Andrews (

InfoBank: uses the identifier R-1-04-MA. Visit this site for more information.

InfoBank: uses the identifier R-1-04-MY. Visit this site for more information.

Related Links:

Click to get Google Software - Download 04002.kml to view this field activity in Google Earth

Platform Info:

Publications resulting from these data

Barnhardt, Walter A., Andrews, Brian D., and Butman, Bradford,2006, High-resolution geological mapping of the inner continental shelf; Nahant to Gloucester, Massachusetts: U.S. Geological Survey Open-File Report 2005-1293, DVD-ROM. (Also available at

Pendleton, E.A., Baldwin, W.E., Barnhardt, W.A., Ackerman, S.D., Foster, D.S., Andrews, B.A., and Schwab, W.C.,2013, Shallow Geology, Sea-floor Texture, and Physiographic Provinces of the Inner Continental Shelf from Nahant to Northern Cape Cod Bay, Massachusetts: U.S.Geological Survey Open-File Report 2012-1157. (Also available at

Data Types and Locations:


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