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USGS Coastal and Marine Geology Program

Field Activity Details for field activity 2003-002-FA

Other ID: 03CRC01, S-1-03-FL

Status: Completed

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

Funding Program(s):

Principal Investigator(s): David Twichell

Affiliate Investigator(s): Robert Halley, USGS, St. Pete; Al Hine - USF

Information Specialist(s): Dann Blackwood, Robert Halley

Data Type(s): Biological Field Study: Experiments, Biological Field Study: Surveys, Environmental Data: CTD, Imagery: Photo, Imagery: Video, Location-Elevation: Navigation, Sampling: Biology, Sampling: Geology, Seismics: Boomer, Visual Identification: Species ID

Scientific Purpose/Goals: Map and image deep water reef communities in the Pulley Ridge area of the eastern Gulf of Mexico. Multibeam mapping and Chirp high-resolution seismic profiling will be conducted using USF equipment. The USGS SEABOSS system will be used to obtain high-resolution images of these reef communities.


Start Port/Location: FIO dock, Bayboro Harbor, FL

End Port/Location: FIO dock, Bayboro Harbor, FL

Start Date: 2003-04-24

End Date: 2003-05-01

Equipment Used: DGPS, SeaBOSS, Boomer, Single channel hydrophone, CO2 Analyzer, ROV, Dredge, SBE 9 CTD, Simrad EM 3000

Information to be Derived: Time series data; Samples and chemical analysis; Habitat maps; Sea floor map; Bathymetric maps;

Summary of Activity and Data Gathered: Video transects: 14 (18 hrs tape); Still photos: 1161; Seismic lines: 9; Multibeam regions: 3; Coral (Leptoceris cuculata) samples: 18; SEABOSS grabs: 9; Dredge sample: 1. Coral samples and grabs in St. Petersburg with Kate Ciembronowicz. Video and still photos in St. Petersburg with Kate Ciembronowicz and in Woods Hole with Dann Blackwood. Seismic, multibeam data and dredge data at USF with Brett Jarret. Digital logs in St. Petersburg with Kate Ciembronowicz.

Staff: Dann Blackwood, Robert Halley, David Twichell

Affiliate Staff:
Kate Ciembronowicz - res. asst. - USGS-St. Pete; Al Hine - co-chief scientist - USF; Brian Donahue - multibeam - USF; Brett Jarrett - geol. - USF; Stanley Locker - seismics - USF; Beau Suthard - seismics - USF; David Naar - multibeam operations - USF

Notes: Original Center People field contained: Robert Halley - co-Chief scientist - USGS-St.Pete; Dann Blackwood - photographer/SEABOSS technician - Woods Hole; Kate Ciembronowicz - res. asst. - St. Pete; Dave Twichell - SEABOSS tech. - Woods Hole.
Project = Florida deepwater coral reefs, Florida deepwater coral reefs


Pulley Ridge, west Florida platform, Florida, southeastern Gulf of Mexico, United States, North America, North Atlantic;

North: 26.25 South: 25.5 West: -83.75 East: -83.5


photo of Suncoaster


Cross, V.A.A., Blackwood, Dann S., Halley, Robert B., and Twichell, David C., 2004, Bottom photographs from the Pulley Ridge deep coral reef: U.S. Geological Survey Open-File Report 2004-1228, Version 1.0, DVD-ROM, URL:

Cross, V.A.A., Twichell, David C., Halley, Robert B., Ciembronowicz, Kate T., Jarrett, Bret D., Hammar-Klose, Erika S., Hine, Al C., Locker, Stan D., and Naar, Dave F., 2006, GIS compilation of data collected from the Pulley Ridge deep coral reef region: U.S. Geological Survey Open-File Report 2005-1089, DVD-ROM, URL:


Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
CO2 Analyzer ---
Simrad EM 3000 --- Multibeam
Bathymetry GIS data ( )
Boomer --- Boomer
Dredge --- Biology
ROV --- Photo
2003-002-FA-PH-001-01 ( Submersible Bottom Video: 20 DVDs converted from HI-8 Tapes )
DGPS --- Navigation
SeaBOSS --- Experiments
Species ID
Single channel hydrophone --- Air Gun / Water Gun
Bubble Gun
Sub Bottom Profiler

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