USGS - science for a changing world

USGS Coastal and Marine Geology Program

Field Activity Details for field activity 1977-019-FA

Other ID: Decca 2/Alpha; CORPUS 53

Status: Completed

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

Funding Program(s):

Principal Investigator(s): Gerald L. Shideler

Affiliate Investigator(s):

Information Specialist(s):

Data Type(s): Environmental Data: Temperature, Environmental Data: Turbidity, Location-Elevation: Navigation

Scientific Purpose/Goals: Obtain quasi-synoptic information on the suspended-sediment transport system within the South Texas OCS by obtaining samples of the water column for analyses of sediment texture and concentration, sediment mineralogy and trace metals, water chemistry, and coccoliths to establish temporal variability patterns; obtaining vertical transmittance-temperature profiles to establish regional turbidity patterns; and casting drift bottles to measure surface currents during the cruise period.


Start Port/Location: Corpus Christi, TX

End Port/Location: Corpus Christi, TX

Start Date: 1977-05-24

End Date: 1977-05-27

Equipment Used: Martek Transmissometer, Raytheon radar, Loran-A

Information to be Derived: Time series data; Samples and chemical analysis; Suspended sediment concentrations;

Summary of Activity and Data Gathered: This cruise was the last of 6 scheduled monitoring cruises to evaluate the temporal and spatial variability of turbidity patterns within the south Texas OCS region. The cruises were conducted between November 1975 and May 1977. Stations: 26; Vertical transmittance-temperature profiles: 26; Water samples: 78; Drift bottles: 335.

Staff: Ronald C. Circe, Gerald L. Shideler, Cynthia Rice, Neal Lillard, George Wiley, Frances Firek, Stanley Lindquist, Charles Stelting

Affiliate Staff:
Bill Allshouse
Quenton Dokken
Dee Haines
Tim Martin

Notes: Original Center People field contained: USGS-Corpus Christi: Gerald Shideler - Ch. Sci., Bill Allshouse, Ron Circe, Quenton Dokken, Fran Firek, Dee Haines, Neal Lillard, Stan Lindquist, Tim Martin, Cyndi Rice, Charles Stelting, George Wiley.


Matagorda Bay, Port Isabel, Texas, south Texas outer continental shelf, Gulf of Mexico, United States, North America, North Atlantic;

North: 28.45 South: 26 West: -97.25 East: -96


photo of Decca Profiler
Decca Profiler



Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Martek Transmissometer --- Temperature
Raytheon radar --- Navigation
Loran-A --- Navigation

Accessibility FOIA Privacy Policies and Notices

U.S. Department of the Interior | U.S. Geological Survey
Questions or Comments? Contact CMGDS Team