USGS Coastal and Marine Geology Program

Coastal & Marine Geology Program

Field Activity Details for field activity 2001-010-FA

Other ID: IB S-1-01-GM

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): David Twichell

Data Type(s): Imagery: Photo, Imagery: Video, Location-Elevation: Navigation, Seismics: Boomer, Sonar: Multibeam, Sonar: Sidescan

Scientific Purpose/Goals: Use sidescan sonar, multibeam bathymetry, and high-resolution seismic data to map the geologic framework and distribution of deep water reefs west of the Florida Keys. An ROV was used to video the deep-water reef to determine extent and composition of benthic biota.


Start Date: 2001-09-05

Start Port/Location: St. Petersburg, FL

End Date: 2001-09-12

End Port/Location: St. Petersburg, FL

Equipment Used: Boomer, Multibeam swath bathymetry, Video camera - deep sea, DGPS, Edgetech DF-1000 sidescan sonar, ISIS, HYPACK, Digital camera, Single channel hydrophone

Information to be Derived:

Summary of Activity and Data Gathered: Cruise ended early due to World Trade Center terrorism and tropical depression forming in the study area.

Staff: Erika Hammar-Klose, Kenneth E. Parolski, Charles Worley

Affiliate Staff:
Bob Halley
USGS-St. Pete - co-chief scientist; Katie Ciembronowicz
USGS-St. Pete - watchstander; Al Hine
Univ. South Florida - co-chief scientist; Stan Locker
Univ. South Florida - seismic data acquisition and processing; David Naar
Univ. South Florida - multibeam data acquisition and processing; Bret Jarrett
Univ. South Florida - watchstander; Glen Taylor
NOAA-NURP - ROV operator

Notes: Original Center People field contained: Chuck Worley - technician to maintain sidescan and navigation gear; Erika Hammar-Klose - processor for sidescan mapping; Ken Parolski - cruise mobilization.
Project = Deep-water reefs, Deep-water reefs


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

North: 25 South: 24.6 West: -83.8 East: -83.6


photo of Suncoaster


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: URL:

Hammar-Klose, E.S., Twichell, D.C., and Worley, C.R., 2003, Archive of sidescan-sonar data and DGPS navigation data collected during USGS Cruise SUNC01010, Pulley Ridge, Gulf of Mexico, 05 September - 12 September, 2001: .

Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Boomer --- Boomer
Multibeam swath bathymetry --- Multibeam
Bathymetry GIS data ( )
Video camera - deep sea --- Video
DGPS --- Navigation
2001-010-FA-LN-001 ( Processed navigation data)
Edgetech DF-1000 sidescan sonar --- Sidescan
Sidescan mosaic ( )
2001-010-FA-SO-001 ( DVD ROM disk of L1-42, PULLEY RIDGE, )
ISIS --- Sidescan
HYPACK --- Navigation
Digital camera --- Photo
2001-010-FA-PH-001 ( Deck photos of field activity operations)
Single channel hydrophone --- Air Gun / Water Gun
Bubble Gun
Sub Bottom Profiler
Boomer seismic data ( )
2001-010-FA-SE-001 ( Raw SEGY data)