Other ID: none
Organization(s): USGS, Woods Hole Coastal and Marine Science Center
Location: Merrimack Embayment, Massachusetts, Gulf of Maine, United States, North America, North Atlantic;
Principal Investigator(s): Walter Barnhardt
Affiliate Investigator(s): Massachusetts Office of Coastal Zone Management
Data Type(s): Biological Field Study: Experiments, Biological Field Study: Surveys, Imagery: Photo, Imagery: Video, Location-Elevation: Navigation, Sampling: Biology, Sampling: Geology, Seismics: Sub Bottom Profiler, Sonar: Multibeam, Sonar: Sidescan, Sonar: Sound Velocity, Visual Identification: Species ID
Scientific Purpose/Goals: Sea floor mapping to: 1) support management of ocean resources; 2) clarify the post-glacial history of sea-level change in the region; 3) reconstruct coastal environments and quantifying rates of change over the last few thousand years; and 4) develop a sediment budget for the coastal system, which is experiencing chronic erosion.
Start Date: 2005-09-06
Start Port/Location: Woods Hole, MA
End Date: 2005-09-21
End Port/Location: Woods Hole, MA
Equipment Used: SeaBOSS, Digital camera, Real Time Kinematic GPS, EdgeTech Subbottom 512i, SWATHplus-M 234 kHz, Klein 595 100/500kHz sidescan sonar, Sensor - MVP30
Information to be Derived: Grain size analysis; Sea floor map; Bathymetric maps; high-resolution geologic maps;
Summary of Activity and Data Gathered: The new remotely operated vehicle (ROV) was deployed for the first time to successfully recover a sound-velocity profiler that was lost during a cast. We collected 100% coverage of sea floor with bathymetry and sidescan sonar data, approximately 1000 km of seismic reflection profiles, and grab samples and bottom photography/video at 93 stations. Cruise focused on nearshore areas in water depths of 5-25 m to complete the surficial mapping that was begun in 2003 (SAIC contract multibeam). Sub-bottom profiles were collected throughout entire study area in water depths of 5-90 m.
Staff: Brian Andrews, Walter Barnhardt, Emile Bergeron, William Danforth, Charles Worley
Notes: Original Center People field contained: Walter Barnhardt (PI); Charles Worley (marine tech); Brian Andrews (data processor); William Danforth (marine tech); Emile Bergeron (marine tech).
Barnhardt, W.A., Andrews, Brian D., Ackerman, Seth D., Baldwin, Wayne E., and Hein, Christopher J., 2009, High-resolution geologic mapping of the inner continental shelf; Cape Ann to Salisbury Beach, Massachusetts: U.S. Geological Survey Open-File Report 2007-1373, URL: http://pubs.usgs.gov/of/2007/1373/.
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, URL: http://pubs.usgs.gov/of/2012/1157/.