USGS Coastal and Marine Geology Program

Coastal & Marine Geology Program

Field Activity Details for field activity 1980-012-FA

Other ID: AST-80-6B

Status: Completed

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

Funding Program(s):

Principal Investigator(s): Charles J. O'Hara

Affiliate Investigator(s):

Information Specialist(s):

Data Type(s): Seismics: Boomer, Seismics: Air Gun / Water Gun, Seismics: Bubble Gun, Seismics: Sparker, Location-Elevation: Navigation

Scientific Purpose/Goals: Define the acoustic stratigraphy and structure of Cox Ledge and determine the occurrence and seaward extent of large, deeply buried preglacial valleys cut into the submerged coastal plain rocks beneath this part of the inner continental shelf.


Start Date: 1980-06-10

Start Port/Location:

End Date: 1980-06-12

End Port/Location:

Equipment Used: EG&G 234, Del Norte hydrophone, Northstar 6000 LORAN-C

Information to be Derived:

Summary of Activity and Data Gathered: Uniboom: 226 line km of high-resolution sub-bottom profiles (122 nautical miles).

Staff: Charles J. O'Hara

Affiliate Staff:
John Eusden
Geological Field Assistant; Anne Whitney
Geological Field Assistant

Notes: Original Center People field contained: Chuck O'Hara, Chief Scientist; John Eusden, Geological Field Assistant; Anne Whitney, Geological Field Assistant.


Cox Ledge, southern Rhode Island Sound, Martha's Vineyard, Muskeget Channel, Nantucket Sound, Massachusetts, United States, North America, North Atlantic;

North: 41.33333 South: 41.16667 West: -71.5 East: -70.5


photo of Asterias


McMullen, K.Y., Poppe, L.J., and Soderberg, N.K., 2009, Digital seismic-reflection data from eastern Rhode Island Sound and vicinity, 1975-1980: URL:


FAN 1980-012-FA has data viewable in the GeoMappApp/Virtual Ocean applications. To view this data in these applications go to and See the instructions for locating USGS data in these applications. You can also view the imagery created from the SEGY data at

Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
EG&G 234 --- Boomer
Del Norte hydrophone --- Air Gun / Water Gun
Bubble Gun
SEGY data ( )
1980-012-FA-SE-002 ( microfilm of )
1980-012-FA-SE-003 ( Raw SEGY formatted data)
1980-012-FA-SE-001 ( Collection of paper record displays of seismic data( UNI) for lines )
Northstar 6000 LORAN-C --- Navigation
Nav data ( )
1980-012-FA-LN-001-01 ( Track map for western half of survey.)
1980-012-FA-LN-001-02 ( Track map for eastern half of survey.)