USGS Coastal and Marine Geology Program

Coastal & Marine Geology Program

Field Activity Details for field activity 1983-008-FA

Other ID: GY-83-12

Status: Completed

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

Funding Program(s):

Principal Investigator(s): Anne M. Trehu

Affiliate Investigator(s):

Information Specialist(s):

Data Type(s): Location-Elevation: Navigation, Seismics: Air Gun / Water Gun, Seismics: Multichannel, Seismics: Ocean Bottom Seismometer, Seismics: Sub Bottom Profiler

Scientific Purpose/Goals: Collect airgun ocean-bottom seismometer (OBIP) refraction and multichannel reflection data along lines to be used for long range explosive refraction profiles next spring, in an effort to determine the structure of the crust beneath the Carolina Trough and in the transition zone from the marginal basin to oceanic crust.


Start Date: 1983-09-22

Start Port/Location: Woods Hole, MA

End Date: 1983-10-06

End Port/Location: Miami, FL

Equipment Used: Multichannel seismics, Air gun, 3.5 kHz, Corer - gravity, Integrated Navigation System, Ocean Bottom Seismometer

Information to be Derived:

Summary of Activity and Data Gathered: 400 km single-channel digital seismic reflection; 210 km multichannel reflection and OBIP refraction; 700 km 3.5-kHz echo sounding; 1 mooring deployed and recovered (#272, current meter). Total for continuous data field is sum of all data gathered.

Staff: Dann Blackwood, Candy Bostwick, Jack Connell, Raymond E. Davis, James E. Dodd, David W. Folger, Barry Irwin, Gus Lamarre, David Nichols, William J. Strahle

Affiliate Staff:
Greg Jennings - Eliason Data; Jay Pulliam

Notes: Original Center People field contained: Dann Blackwood, Jack Connell, Raymond Davis, James Dodd, Dave Folger, Barry Irwin, Candy Lane, Gus Lamarre, Dave Nichols, Jay Pulliam, William Strahle.
Project = Continental margin deep crustal and seismicity studies, Continental margin deep crustal and seismicity studies


Carolina Trough, offshore Florida, southern Blake Plateau, United States, North America, North Atlantic;

North: 36 South: 27 West: -80.5 East: -75


photo of Gyre



Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Multichannel seismics --- Multichannel
1983-008-FA-SE-002 ( microfilm of )
1983-008-FA-SE-003-01 ( SEGY seismic data rescued from 9 track tape)
Air gun --- Air Gun / Water Gun
3.5 kHz --- Sub Bottom Profiler
1983-008-FA-SE-001 ( Collection of paper record displays of seismic data( 3.5K) for lines )
Corer - gravity --- Geology
Integrated Navigation System --- Navigation
1983-008-FA-LN-001 ( Navigation trackline plot for field activity 83008)
1983-008-FA-LN-002 ( Digital tape(s) of NV-TRANSIT, NV-LINES 1-3, NV-LINES 4,5,1A, NV-LINES 1-5,1A, NV-INS, OBIP, )
Ocean Bottom Seismometer --- Ocean Bottom Seismometer