Other ID: 85 Leg 3B; FRNL 85-3B
Organization(s): USGS, Woods Hole Coastal and Marine Science Center
Location: Cayman Trough, Cayman Islands, Caribbean Sea, North America, North Atlantic;
Principal Investigator(s): N. Terence Edgar
Affiliate Investigator(s): Lindsay Parson - British Institute of Oceanographic Sciences (IOS)
Data Type(s): Sonar: Sidescan, Seismics: Air Gun / Water Gun, Seismics: Boomer, Seismics: Bubble Gun, Seismics: Sparker, Seismics: Sub Bottom Profiler, Electro-Magnetic: Magnetics, Sonar: Single Beam, Location-Elevation: Navigation
Scientific Purpose/Goals: To ensonify the central region of the Cayman Trough with the GLORIA sidescan system.
Start Date: 1985-10-22
Start Port/Location: Key West, FL
End Date: 1985-11-02
End Port/Location: San Juan, Puerto Rico
Equipment Used: GLORIA sidescan, Air gun, Single channel hydrophone, Marine magnetometer, 3.5 kHz, 10 kHz Bathymetry, ABC navigation system, Magnavox satellite positioning system, Loran-C
Information to be Derived:
Summary of Activity and Data Gathered: The Cayman Trough is a narrow rectangular deep which contains a sea floor spreading system. The survey took place over the coastal region of the spreading ridge and along one line to the eastern extremity of the Trough. These data provide detailed information of the history of spreading in the trough and thus the nature of the northern Caribbean plate boundary.
Staff: Dann Blackwood, Kathryn Scanlon Catanach, William Dillon, N. Terence Edgar, Gary W. Hill
Notes: Participating agencies include: U.S. Geological Survey (USGS), British Institute of Oceanographic Sciences (IOS), and British Research Vessel Services (RVS). Original Center People field contained: N. Terence Edgar - co-Ch. Sci., USGS-Reston; Dann Blackwood - photographer, USGS-Woods Hole; William Dillon - geologist, USGS-Woods Hole; Gary Hill - geologist, USGS-Reston; Kathy Scanlon - geologist, USGS-Woods Hole.
(Sidescan Sonar) Paskevich, V.F., Wong, F.L., O'Malley, J.J., Stevenson, A.J., and Gutmacher, C.E., 2011, GLORIA sidescan-sonar imagery for parts of the U.S. Exclusive Economic Zone and adjacent areas: U.S. Geological Survey Open-File Report 2010-1332