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USGS Coastal and Marine Geology Program

Field Activity Details for field activity 2012-024-FA

Other ID: none

Status: Completed

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

Funding Program(s):

Principal Investigator(s): David Foster

Affiliate Investigator(s): Chris Sherwood

Information Specialist(s): Seth Ackerman

Data Type(s): Sonar: Interferometric, Sonar: Multibeam, Sampling: Geology, Location-Elevation: Navigation, Seismics: Sub Bottom Profiler, Imagery: Photo, Imagery: Video

Scientific Purpose/Goals: Map the CT River from the river mouth north towards Essex, CT; geophysical mapping will be followed by sampling


Start Port/Location: Old Saybrook, CT

End Port/Location: Old Saybrook, CT

Start Date: 2012-09-15

End Date: 2012-09-23

Equipment Used: DGPS, Grab sampler - Van Veen , SWATHplus-M 234 kHz, Real Time Kinematic GPS, Seismic reflection, EdgeTech 424 chirp sub-bottom profiler, GoPro camera

Information to be Derived: Grain size analysis;Sea floor map;Bathymetric maps;

Summary of Activity and Data Gathered: About 227 line-km of digital Chirp sub bottom and 234 kHz interferometric sonar data were collected. 100 percent bathymetric coverage was achieved and sonar backscatter were processed and mosaicked in the field. Eighty seven sample stations were occupied, 73 grab samples were collected, 66 stations included video and photographs of the bottom.

Staff: Seth Ackerman, Dann Blackwood, David Foster, Barry Irwin, Eric Moore

Affiliate Staff:

Project = Sed Processes: Models & Measure,


Connecticut River, Old Saybrook, Essex, Connecticut, United States, North America

North: 41.39 South: 41.239 West: -72.415 East: -72.333


photo of Rafael


Ackerman, S.D., Foster, D.S., Moore, E.M., Irwin, B.J., and Blackwood, D.S, 2017, High-resolution geophysical and sampling data collected at the mouth of Connecticut River, Old Saybrook to Essex, Connecticut, 2012, USGS Field Activity 2012-024-FA: doi: 10.5066/F7PG1Q7V.

Valentine, K., Kineke, G.C., Ralston, D.K., Sherwood, C.R., and Geyer, W.R., Response of sediment grain size and bedforms to changing flow conditions in a shallow, energetic estuary: Marine Geology, .


FAN 2012-024-FA has data viewable in the CMGP Video and Photograph Portal. View the data in this application here. See the instructions for working with this application.

Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
SWATHplus-M 234 kHz --- Interferometric
Grab sampler - Van Veen --- Geology
DGPS --- Navigation
Seismic reflection --- Air Gun / Water Gun
EdgeTech 424 chirp sub-bottom profiler --- Sub Bottom Profiler
GoPro camera --- Photo
Real Time Kinematic GPS --- Navigation

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