USGS Coastal and Marine Geology Program

Coastal & Marine Geology Program

Field Activity Details for field activity 1978-011-FA

Other ID: W-39, Leg 4

Status: Completed

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

Funding Program(s):

Principal Investigator(s): Charles E. McClennen

Affiliate Investigator(s): Arthur G. Gaines, Jr. - SEA

Information Specialist(s):

Data Type(s): Sonar: Sidescan, Seismics: Sub Bottom Profiler, Location-Elevation: Navigation

Scientific Purpose/Goals: USGS cruise (4 days) piggybacked on SEA cruise to conduct sidescan sonar and high-resolution seismic reflection surveys of a west-east transect across the South Carolina shelf off Charleston and a more extensive survey of the Mud Patch on the southern New England shelf.


Start Date: 1978-05-14

Start Port/Location: Charleston, SC

End Date: 1978-05-24

End Port/Location: Woods Hole, MA

Equipment Used: ORE sidescan, Raytheon RTT 1000 Seismic System, Loran-A, Loran-C

Information to be Derived: Sea floor map; Morphology;

Summary of Activity and Data Gathered: No clear sub-bottom reflectors were noted in the entire survey of the southern New England shelf. In part this reflects limitations of the profiling equipment although better records might have been obtained at slower speeds with greater submergence of the transducer. Sidescan sonar: 368 km; Sub-bottom profiles: 368 km.

Staff: Charles E. McClennen

Affiliate Staff:
SEA: Arthur G. Gaines
Jr. - co-Ch. Sci.
Stephen Bekowitz - scientist
Anne Brearley - scientist
Carol Reinisch - scientist
24 SEA students

Notes: Original Center People field contained: Charles E. McClennen - co-Ch. Sci.


South Carolina, Southern New England Continental Shelf, Mud Patch, United States, North America, North Atlantic;

North: 41.6 South: 32.5 West: -80 East: -70.5


photo of Westward


McClennen, C.E., 1981, Sidescan-sonar data collected during May 1978 from the southern New England continental shelf: 2, download PDF.


Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
ORE sidescan --- Sidescan
1978-011-FA-SO-001 ( Collection of paper record displays of sidescan sonar data for lines )
1978-011-FA-SO-002 ( microfilm of )
Raytheon RTT 1000 Seismic System --- Sub Bottom Profiler
Loran-A --- Navigation
Loran-C --- Navigation
1978-011-FA-LN-001 ( Navigation trackline plot for field activity 78011)