Field Activity 1984-030-FA

Identifier 1984-030-FA
Alternate names AII 112, Leg 4
Purpose The major scientific objectives of diving on the escarpment are to determine the stratigraphy and depositional origin of the strata presently exposed on the escarpment face and to determine how and by what processes erosion has modified the present escarpment.
Location West Florida Escarpment, Mexican Basin, Gulf of Mexico, United States, North America, North Atlantic;
Summary ALVIN Dives 1342-1348.
Info derived Samples and chemical analysis; Sea floor map; Bathymetric maps; Morphology;
Comments The West Florida Escarpment is the topographic feature which separates the deep Gulf of Mexico (3400 m) from the Florida Platform (>1000 m). The escarpment is made up of outcropping Mesozoic limestones and has an average slope of 20-45 degrees. A comparable topographic feature might be one wall of the Grand Canyon.
Platform
Alvin
Length 23 feet; beam 8.5 feet.
Atlantis II
210 feet, beam 44 feet, draft 17 feet.
Itinerary
Start Tampa, FL 1984-03-06
End Cristobal, Panama 1984-03-19
Days in the field 14
Bounds
West -85
East -84
North 26.1
South 24.25

Personnel

Organization
384 Woods Hole Road
Quissett Campus
Woods Hole, MA02543-1598
(508) 548-8700
Principal investigators Robert Commeau
Crew members
Robert Commeau
Scientist, Staff
Affiliate principal Charles Paull - SIO
Affiliate staff Charles Paull - Ch. Sci., Scripps; Barbara Hecker - LDGO; Stjepko Golubic - BU; James Hook - BU; Raymond Freeman-Lynde - NORDA; Conrad Neumann - UNC; Elisabeth Sikes - UNC; William Corso - U.Texas-Austin; Ralph Hollis - Chief pilot, ALVIN; Don Collasius - DSV Pilot, WHOI; James Hardiman - DSV Pilot, WHOI; David Sanders - Research Asst., WHOI; Denzel Gleason - Research Asst., WHOI; Jonathan Borden - Research Asst., WHOI; James Aguiar, Jr. - Research Asst., WHOI; William Sellers - Research Asst., WHOI

Data types and categories

Data category: Imagery, Location-Elevation, Sampling, Visual Identification
Data type: Photo, Video, Navigation, Biology, Geology, Submersible Observations

Documents: Notes and log books

Name Description
News release Chief Scientist's news release following sulphur-seep discovery along the West Florida Escarpment.
Cruise report WHOI cruise utilization report including trackmap, personnel, projects, pre-cruise plan. ALVIN dive summary, dive plans, and dive location maps.

Equipment used

Equipment Usage description Data types Datasets
Camera- deep sea Photo (no data reported)
Video camera - deep sea Video (no data reported)
Push corer (wh) Biology, Geology (no data reported)
Loran-C Navigation (no data reported)
Submersible Observation Submersible Observations 7

Datasets

Datasets produced in this activity

Dataset name Equipment Description Dataset contact
1984-030-FA-NL-004 Submersible Observation Dive Log Summary Summary of ALVIN Dive 1342 provided on WHOI's public webpages. Nancy K. Soderberg
1984-030-FA-NL-005 Submersible Observation Dive Log Summary Summary of ALVIN Dive 1343 provided on WHOI's public webpages. Nancy K. Soderberg
1984-030-FA-NL-006 Submersible Observation Dive Log Summary Summary of ALVIN Dive 1344 provided on WHOI's public webpages. Nancy K. Soderberg
1984-030-FA-NL-007 Submersible Observation Dive Log Summary Summary of ALVIN Dive 1345 provided on WHOI's public webpages. Nancy K. Soderberg
1984-030-FA-NL-008 Submersible Observation Dive Log Summary Summary of ALVIN Dive 1346 provided on WHOI's public webpages. Nancy K. Soderberg
1984-030-FA-NL-009 Submersible Observation Dive Log Summary Summary of ALVIN Dive 1347 provided on WHOI's public webpages. Nancy K. Soderberg
1984-030-FA-NL-010 Submersible Observation Dive Log Summary Summary of ALVIN Dive 1348 provided on WHOI's public webpages. Nancy K. Soderberg

Publications

Samples collected during this field activity