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Summary Information for Field Activity 1990-049-FA

Area of Operations: Rio Grande de Anasco, Manchas Interiores, Manchas Exteriores, Mayaguez Bay, Puerto Rico, Caribbean Sea, United States, North America, North Atlantic

Dates: December 07, 1990 to December 15, 1990

Chief scientist: Bill Schwab

   Richard Webb - USGS-WRD

Objectives: High-resolution mapping of coral reef complex and surrounding area to develop basemap for future environmental studies anticipated by possible discharge from regional water treatment plant and heavy sediment discharge from Anasco River.

Type of Activity: Sampling; Seismic profiling; Sea floor mapping;Sea floor mapping

Information to be derived: Bathymetric maps

Summary: Sidescan sonar; mosaic 3.5 kHz: 89 km; Uniboom: 89 km; Shipek samples: 33.

Contact: Bill Schwab (

InfoBank: uses the identifier J-3-90-PR. Visit this site for more information.

Related Links:

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Platform Info:

Publications resulting from these data

Schwab, W.C., Webb, R.M.T., Danforth, W.W., O'Brien, T.F., and Irwin, B.J.,1991, High-resolution sidescan-sonar imagery of the Manchas Interiores-Manchas Exteriores coral reef complex, Mayaguez, Puerto Rico: U.S. Geological Survey Open-File Report 91-436, 15 p.. (Available as a PDF version). (Also available at

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Data Types and Locations:


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