USGS Coastal and Marine Geology Program

Coastal & Marine Geology Program

Field Activity Details for field activity 2007-001-FA

Other ID: none

Status: Completed

Organization(s): USGS, Woods Hole Coastal and Marine Science Center

Funding Program(s):

Location: Massachusetts Bay, Scituate, Duxbury, Massachusetts, United States, North America, North Atlantic;

Principal Investigator(s): Walter Barnhardt

Affiliate Investigator(s): Massachusetts Office of Coastal Zone Management

Information Specialist(s): Seth Ackerman, Brian Andrews

Data Type(s): Location-Elevation: Navigation, Seismics: Sub Bottom Profiler, Sonar: Multibeam, Sonar: Sidescan

Scientific Purpose/Goals: Sea floor mapping (geophysics only).


Start Date: 2007-04-20

Start Port/Location: Green Harbor, MA

End Date: 2007-05-04

End Port/Location: Green Harbor, MA

Equipment Used: Submetrix Sidescan sonar, EdgeTech 424 chirp sub-bottom profiler, Klein 595 100/500kHz sidescan sonar, Real Time Kinematic GPS, SWATHplus-M 234 kHz

Information to be Derived: Sea floor map; Bathymetric maps;

Summary of Activity and Data Gathered: Completed mapping in shallow water along coast, approx. from Green Harbor to Scituate, to fill in areas not covered by 2006 Megan Miller survey. Collected full coverage bathymetry and backscatter data, and closely spaced grid of sub-bottom profiles. Cruise was delayed 6 days by a strong nor'easter. Lost several days at end of cruise due to weather. Took along two data processors on this cruise for the first time (usually only one) in order to speed up the production. New 4-stroke outboards performed well, very quiet and lots of power. Auto-pilot seldom deviated from programmed HYPACK lines. New pole mount for chirp worked great, allowed tight turns to port w/out prop damage to fish. Now, if we could just find a way to launch/recover the big 512i fish! Total trackline length = 525 km; area mapped = 57 km2; water depths range from 4-20 m. Nearshore area south of Green Harbor (off Duxbury Beach) was not completed due to weather; will fill gaps during July cruise.

Staff: Seth Ackerman, Brian Andrews, Wayne Baldwin, Emile Bergeron, William Danforth, Jane Denny, David Foster, Barry Irwin, Charles Worley

Affiliate Staff:

Notes: Project = Geologic mapping of the Massachusetts inner shelf, Geologic mapping of the Massachusetts inner shelf

Location Map:


photo of Rafael


Andrews, B.D., Ackerman, Seth D., Baldwin, Wayne E., and Barnhardt, Walter A., 2010, Geophysical and sampling data from the inner continental shelf; northern Cape Cod Bay, Massachusetts: URL:

Barnhardt, W.A., Ackerman, Seth D., Andrews, Brian D., and Baldwin, Wayne E., 2010, Geophysical and sampling data from the inner continental shelf; Duxbury to Hull, Massachusetts: URL:

de La Beaujardière, J., Beegle-Krause, C.J., Bermudez, Luis, Hankin, Steven, Hazard, Lisa, Howlett, Eoin, Le, Steven, Proctor, Roger, Signell, Richard P., Snowden, Derrick, and Thomas, Julie, 2010, Ocean and coastal data management: , Proceedings of OceanObs09: Sustained Ocean Observations and Information for Society (Vol. 2), Venice, Italy, 21-25 September 2009, Hall, J., Harrison D.E. & Stammer, D., Eds., ESA Publication WPP-306. Venice, Italy, 21-25 September 2009, URL:

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: URL:

Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Submetrix Sidescan sonar --- Sidescan
EdgeTech 424 chirp sub-bottom profiler --- Sub Bottom Profiler
2007-001-FA-SE-001 ( Raw SGEY data)
2007-001-FA-SE-001-01 ( 23 DVD's of SUBX, KLIEN, NAV. Data)
Klein 595 100/500kHz sidescan sonar --- Sidescan
2007-001-FA-SO-001-01 ( 23 DVD's of SUBX, KLIEN, NAV. Data)
Real Time Kinematic GPS --- Navigation
2007-001-FA-LN-001-01 ( 23 DVD's of SUBX, KLIEN, NAV. Data)
SWATHplus-M 234 kHz --- Interferometric