USGS Coastal and Marine Geology Program

Coastal & Marine Geology Program

Field Activity Details for field activity 2002-041-FA

Other ID: none

Status: Completed

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

Funding Program(s):

Principal Investigator(s): Thomas O'Brien

Affiliate Investigator(s): Carolyn Ruppel (Georgia Tech)

Information Specialist(s):

Data Type(s): Seismics: Sub Bottom Profiler, Location-Elevation: Navigation

Scientific Purpose/Goals: To collect geophysical and chemical measurements that quantify lateral and temporal energy, fluid, and gas fluxes at gas hydrate sites in Gulf of Mexico lease blocks Green Canyon 185 and Garden Banks 425. USGS participation is to help operate the Georgia Tech EdgeTech SB512 deep-tow chirp profiling system and to produce trackline maps and some data management at sea.


Start Date: 2002-10-18

Start Port/Location: Gulfport, MS

End Date: 2002-11-02

End Port/Location: Gulfport, MS

Equipment Used: EdgeTech Subbottom 512i, DGPS

Information to be Derived:

Summary of Activity and Data Gathered:

Staff: Thomas O'Brien

Affiliate Staff:
Carolyn Ruppel (Georgia Tech.) - Chief Scientist:

Notes: Cruise has been funded. Tom O'Brien is going. Original Center People field contained: See website


north central Gulf of Mexico, United States, North America, North Atlantic;

North: 30.82238 South: 26.74561 West: -92.8836 East: -84.8584


photo of Seward Johnson
Seward Johnson


Wilson, A., and Ruppel, C., 2007, Salt tectonics and shallow subseafloor fluid convection; models of coupled fluid-heat-salt transport: Geofluids, v. 7 no. 4, doi: 10.1111/j.1468-8123.2007.00191.x.


Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
EdgeTech Subbottom 512i --- Sub Bottom Profiler
DGPS --- Navigation