Other ID: 85 Leg 3A; FRNL 85-3A
Organization(s): USGS, Woods Hole Coastal and Marine Science Center
Location: eastern Gulf of Mexico, United States, North America, North Atlantic;
Principal Investigator(s): David Twichell
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: Long-range sidescan sonar survey of the Gulf of Mexico using the GLORIA system.
Start Date: 1985-10-02
Start Port/Location: Tampa, FL
End Date: 1985-10-22
End Port/Location: Key West, FL
Equipment Used: GLORIA sidescan, Air gun, Single channel hydrophone, Marine magnetometer, 3.5 kHz, 10 kHz Bathymetry, ABC navigation system, Loran-C, GPS (wh)
Information to be Derived:
Summary of Activity and Data Gathered: GLORIA Sidescan Sonar: 6,557 km; 10 kHz: 6,734 km; 3.5 kHz: 6,738 km; Airgun: 6,578 km; Magnetometer: 6,712 km.
Staff: David Twichell, Page Valentine, Robert F. Commeau, Steve Mateus
Notes: Original Center People field contained: Dave Twichell - Ch. Sci., Robert Commeau - geologist, Steve Mateus - geologist, Page Valentine - geologist.
(Bathymetry) Lubinski, D.J., and Twichell, D.C., 1989, Magnetic and bathymetric data from R/V FARNELLA Cruises FRNL85-1, 85-2, and 85-3 in the U.S. Gulf of Mexico EEZ: U.S. Geological Survey Open-File Report 89-156, 6 p
(Sidescan Sonar) Twichell, D, Paskevich, V.F,,1996, GLORIA sidescan-sonar field data and navigation data collected in the Gulf of Mexico during R/V FARNELLA cruises in 1982 and 1985: U.S. Geological Survey Open-File Report 96-707, CD-ROM.