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USGS Coastal and Marine Geology Program

Field Activity Details for field activity 1981-012-FA

Other ID: 81-G-8

Status: Completed

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

Funding Program(s):

Principal Investigator(s): Charles W. Holmes

Affiliate Investigator(s):

Information Specialist(s):

Data Type(s): Seismics: Sub Bottom Profiler, Biological Field Study: Experiments, Sampling: Geology, Sampling: Biology, Location-Elevation: Navigation

Scientific Purpose/Goals: To sample via core and dredge targets determined by seismic information obtained during G80-6A to define the extent of phosphate deposits.


Start Port/Location: Gulfport, MS

End Port/Location: St. Petersburg, FL

Start Date: 1981-05-15

End Date: 1981-05-20

Equipment Used: 3.5 kHz, Corer - slow, Grab sampler - Van Veen , Dredge, Loran-C

Information to be Derived:

Summary of Activity and Data Gathered: 3.5 kHz data: 540 nm (1000 km); Rock dredges: 6; Grabs: 5; Piston cores: 3.

Staff: Barry Irwin, Charles W. Holmes, Charles Stelting, Angie Varga, Margie M. Mitchell, Madelyn Krobot, Elizabeth Gum, James C. McFarlen

Affiliate Staff:
Paul Schoeder; Larry Doyle
University of So. Florida; Greg Bnolls
University of So. Florida; Rick Wall
University of So. Florida; Steve Walker
University of So. Florida

Notes: Original Center People field contained: Chuck Holmes, Chief Scientist; Paul Schoeder; Charles Stelting; Margie M. Mitchell; Angie Varga; Madelynn Krobot; Elizabeth Gum; James McFarlen; Barry Irwin.
Project = West Florida Shelf, West Florida Shelf


west Florida shelf, Florida escarpment, Gulf of Mexico, United States, North America, North Atlantic;

North: 26 South: 24.8 West: -85 East: -83.9


photo of Gyre



Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
3.5 kHz --- Sub Bottom Profiler
1981-012-FA-SE-001 ( analog tape of seismic data)
Corer - slow --- Geology
Grab sampler - Van Veen --- Geology
Dredge --- Biology
Loran-C --- Navigation
1981-012-FA-LN-001-01 ( track chart GYRE 81-8 Track Map (pdf file) West Florida Shelf composite track map including GYRE 81-8 (FA 81012), May 15-20, 1981; LONGHORN 81-1 (FA 81015), May 27-June 9, 1981; SEA ANGEL (no FA #), Aug 10?-29?, 1981; and BELLOWS (FA 82014), May 24-June 6, 1982. )

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