Other ID: 85 Leg 4; FRNL 85-4
Organization(s): USGS, Woods Hole Coastal and Marine Science Center
Location: EEZ of Puerto Rico and the U.S. Virgin Islands, United States, Caribbean Sea, North America, North Atlantic;
Principal Investigator(s): Kathryn Scanlon Catanach
Affiliate Investigator(s): Doug Masson - 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: The purpose of this cruise was to map the entire ocean floor of the EEZ of Puerto Rico and the U.S. Virgin Islands.
Start Date: 1985-11-04
Start Port/Location: San Juan, Puerto Rico
End Date: 1985-12-03
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, Transit GPS, Dead reckoning
Information to be Derived: Sea floor map;
Summary of Activity and Data Gathered: The GLORIA sidescan sonar data are of excellent quality and complete coverage of the EEZ area was obtained. No down-time was experienced by GLORIA. The airgun, 10 kHz echo sounder and magnetic data are also of high quality with only a few hours of airgun data lost because of technical problems. The 3.5 kHz echo sounder records vary in quality from good to very noisy. This cruise was made scientifically successful and most enjoyable by the cooperation and competence of the ship's officers and crew and our multinational scientific staff.
Staff: Dann Blackwood, Christopher F. Polloni, Kathryn Scanlon Catanach
Notes: This cruise was carried out jointly by the U.S. Geological Survey (USGS) and the British Institute of Oceanographic Sciences (IOS). Personnel from the Geological survey of the Dominican Republic (DR), Puerto Rico's Department of Natural Resources (DNR) and Great Britain's Research Vessel Services (RVS) also participated. Scanlon (USGS) and Masson (IOS) shared the duties of Chief Scientist while Harris (IOS) was designated as Party Chief. Original Center People field contained: Kathy Scanlon - co-Ch. Sci.; Dann Blackwood - photographer; Chris Polloni - watchstander, Nov. 15 - Dec. 3.
Scanlon, K.M., 1986, Magnetic and bathymetric data from R/V FARNELLA Cruise FRNL 85-4 in the Puerto Rico and U.S. Virgin Islands Exclusive Economic Zone: U.S. Geological Survey Open-File Report 86-399, 3 p. URL: http://pubs.er.usgs.gov/publication/ofr86399, download PDF.
Scanlon, K.M., 1989, Seismic-reflection and echo-sounder data from R/V FARNELLA Cruise FRNL85-4 in the Puerto Rico and U.S. Virgin Islands Exclusive Economic Zone: U.S. Geological Survey Open-File Report 90-38, 4 p. URL: http://pubs.er.usgs.gov/usgspubs/ofr/ofr9038, download PDF.
Twichell, D.C., Paskevich, V., Delorey, C.,, 1998, GLORIA sidescan-sonar field data and navigation data collected off Puerto Rico in 1985 and the eastern United States in 1987: U.S. Geological Survey Open-File Report 98-619, CD-ROM, URL: http://pubs.usgs.gov/of/of98-619/.