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Summary Information for Field Activity 1987-022-FA

Area of Operations: Canary Islands, Western Sahara, Mauritania, Senegal, Africa, North Atlantic

Dates: June 12, 1987 to July 17, 1987

Chief scientist: George Driscoll

Objectives: Collect gravity and bathymetric data offshore W. Sahara, Mauritania and Senegal on a 3 nm grid with internal consistency +/-3 mgals. The GE 810 correlation sonar was tested around Gran Canaria during the first part of the cruise.

Type of Activity:

Information to be derived:

Summary: Departed Las Palmas, Gran Canaria 12 June 1987 to test General Electric 810 Correlation Sonar along the coast of Western Sahara. On 19 June returned to Las Palmas to offload test personnel and resumed survey along offshore Western Sahara. Survey continued off Mauritania and Senegal. The 810 Sonar/MK 29 Gyro system worked flawlessly. Most lines were cut short on the eastern end due to shoals.

Contact: George Driscoll (

InfoBank: uses the identifier S-4-87-AF. Visit this site for more information.

Related Links:

Platform Info:

Publications resulting from these data

Folger, David W., Irwin, Barry J., McCullough, James R., Driscoll, George R., and Polloni, Christopher F.,1990, Map showing free-air gravity anomalies off the western coast of Africa; Western Sahara to Senegal (north of 15 degrees north latitude): U.S. Geological Survey Miscellaneous Field Studies Map MF-2098-C, scale 1:1,500,000. (Available as a PDF version)

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Data Types and Locations:


Data is in the Data Library - contact Data Manager (


Chief Scientist's report of ship movement, personnel, equipment and data acquisition notes, trackmaps, etc.



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