USGS - science for a changing world

USGS Coastal and Marine Geology Program

Field Activity Details for field activity 1975-032-FA

Other ID: none

Status: Completed

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

Funding Program(s):

Principal Investigator(s): David W. Folger, Bradford Butman

Affiliate Investigator(s):

Information Specialist(s):

Data Type(s): Visual Identification: Ground Truthing, Imagery: Photo, Time Series: Mooring (physical oceanography), Sampling: Geology

Scientific Purpose/Goals: The objective of the ATLANTIC TWIN cruise was to deploy three bottom instrument packages (#104, 105, and 106) on the mid-Atlantic continental shelf to study the frequency, rate and processes of bottom sediment transport.


Start Port/Location: Pt. Pleasant, NJ

End Port/Location: Pt. Pleasant, NJ

Start Date: 1975-12-10

End Date: 1975-12-12

Equipment Used: Mooring tripod, Benthos model 372 camera and strobe, Current, Sediment traps

Information to be Derived: Time series data;

Summary of Activity and Data Gathered: The instrument packages consisted of a 35 mm camera and strobe (Benthos), current meter (EG&G 102), three sediment traps, acoustic release (AMF) and rope canister mounted on a tripod frame. To mark the deployment site and to reduce fishing hazards a lighted surface buoy was deployed near the tripod at two sites. Working days: 2; Ship track: 270 nm (478 km). Tripods deployed: 3 (#104 CINDY, #105 DEBBIE both recovered FA 76003 WHITEFOOT Feb. 21-27, 1976; #106 JERRY recovered FA 76001 SASSAFRAS Jan. 14-17, 1976).

Staff: Bradford Butman, David W. Folger, Phil Shea

Affiliate Staff:
Paul Cousins; Andrew Eliason (Eliason Data Services)

Notes: Original Center People field contained: Brad Butman, Dave Folger, Phil Shea, and Paul Cousins.


mid-Atlantic Bight, continental shelf, New Jersey, United States, North America, North Atlantic;

North: 39.47059202 South: 39.24218565 West: -73.11945154 East: -72.82314201


photo of Atlantic Twin
Atlantic Twin


Butman, B., Noble, M., Folger, D.W., 1979, Long-term observations of bottom current and bottom sediment movement on the mid-Atlantic continental shelf: Journal of Geophysical Research, JGR, v. 84 no. C3, pp. 1187–1205, doi: 10.1029/JC084iC03p01187.

Moody, J.A., and Butman, B., 1980, Semidiurnal bottom pressure and tidal currents on Georges Bank and in the Mid-Atlantic Bight: U.S. Geological Survey Open-File Report 80-1137,

Moody, J.A., Butman, B., Beardsley, R.C., Brown, W.S., Daifuku, P., Irish, J.D., Mayer, D.A., Mofjeld, H.O., Petrie, B., Ramp, S., Smith, P., and Wright, W.R., 1984, Atlas of tidal elevation and current observations on the Northeast American continental shelf and slope: U.S. Geological Survey Bulletin 1611,


Documents associated with this activity

Title Survey Equipment Description
Cruise report (document not focused on specific equipment) Chief Scientist's cruise report describing ship movement, personnel, equipment and data acquisition notes, daily narrative, track map including mooring locations, and equipment schematics.

Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Mooring tripod --- Ground Truthing
Benthos model 372 camera and strobe --- Photo
1975-032-FA-PH-001 (film collection of TRIPOD 105; 19751211-?)
Current --- Mooring (physical oceanography)
1975-032-FA-OM-001 (MAB mooring data)
Sediment traps --- Geology

Accessibility FOIA Privacy Policies and Notices

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