USGS Coastal and Marine Geology Program

Coastal & 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): Bradford Butman, David W. Folger

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 Date: 1975-12-10

Start Port/Location: Pt. Pleasant, NJ

End Date: 1975-12-12

End Port/Location: Pt. Pleasant, NJ

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: 40.1 South: 38.5 West: -74.95 East: -73.1


photo of Atlantic Twin
Atlantic Twin


Butman, B., Noble, Marlene, and Folger, David 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, URL:


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