USGS - science for a changing world

USGS Coastal and Marine Geology Program

Field Activity Details for field activity 2008-024-FA

Other ID: R-24-08-ME

Status: Completed

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

Funding Program(s):

Principal Investigator(s): Walter Barnhardt

Affiliate Investigator(s): Joe Kelley, University of Maine; Laura Brothers, University of Maine

Information Specialist(s): Brian Andrews

Data Type(s): Imagery: Photo, Location-Elevation: Navigation, Seismics: Sub Bottom Profiler, Sonar: Sidescan, Sonar: Sound Velocity, Sonar: Interferometric

Scientific Purpose/Goals: Re-mapping of pockmark field to determine morphological change (if any) and to refine sub-bottom structure.


Start Port/Location: Belfast, ME

End Port/Location: Belfast, ME

Start Date: 2008-09-16

End Date: 2008-09-25

Equipment Used: EdgeTech 424 chirp sub-bottom profiler, Klein 3000, Digital camera, Real Time Kinematic GPS, SEA SWATHplus-M 234 kHz, Sensor - SVP

Information to be Derived:

Summary of Activity and Data Gathered: Seismic reflection system failed after three days due to software problems (SB Logger). Very frustrating. Swath bathymetry and backscatter from sidescan sonar: 8 days of data collection, 340 km of tracklines, water depths 3-90 m; Seismic reflection profiles: 3 days of data collection, 109 km of tracklines; Sound velocity profiles: 15.

Staff: Brian Andrews, Walter Barnhardt, Emile Bergeron, Barry Irwin, Charles Worley

Affiliate Staff:
Joe Kelley and Laura Brothers
Univ. of Maine (co-PIs)

Notes: Original Center People field contained: Walter Barnhardt (PI), Barry Irwin (boat driver), Emile Bergeron (master tech), Brian Andrews (data processor), and Chuck Worley (tech).
Project = Penobscot River Sampling, Penobscot River Sampling


Penobscot River, Penobscot Bay, Belfast Bay, Maine, United States, Gulf of Maine, North America, North Atlantic;

North: 44.5 South: 44.3 West: -69 East: -68.8


photo of Rafael


Andrews, B.D., Danforth, W. W., Brothers, L.L., Barnhardt, W. A., 2020, High-resolution geophysical data collected in the Belfast Bay, Maine pockmark field in 2006, 2008, and 2009 by the U.S. Geological Survey: U.S. Geological Survey data release,


Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
EdgeTech 424 chirp sub-bottom profiler --- Sub Bottom Profiler
Klein 3000 --- Sidescan
Digital camera --- Photo
Real Time Kinematic GPS --- Navigation
SEA SWATHplus-M 234 kHz --- Interferometric
Sensor - SVP --- Sound Velocity

Accessibility FOIA Privacy Policies and Notices

U.S. Department of the Interior | U.S. Geological Survey
Questions or Comments? Contact CMGDS Team