Skip Links

USGS - science for a changing world

Open-File Report 02-006

Multibeam Mapping of the Pinnacles Region, Gulf of Mexico

By James V. Gardner, Peter Dartnell, and Kenneth J. Sulak

Alabama Aalps Reef, Northern Gulf of MexicoIntroduction

Recent USGS mapping shows an extensive deep (~100 m) reef tract occurs on the Mississippi-Alabama outer continental shelf (Figure 1). The tract, known as "The Pinnacles", is apparently part of a sequence of drowned reef complexes along the "40-fathom" shelf edge of the northern Gulf of Mexico (Ludwick and Walton, 1957). It is critical to determine the accurate geomorphology of these deep-reefs because of their importance as benthic habitats for fisheries. The Pinnacles have previously been mapped using a single-beam echo sounder (Ludwick and Walton,1957), sidescan sonar (Laswell et al., 1990), and the TAMU2 towed single-beam sidescan-sonar system (Anonymous, 1999). These existing studies do not provide the quality of geomorphic data necessary for reasonable habitat studies.

First posted January 9, 2002

For additional information, contact:
Contact Information, Pacific Coastal and Marine Science Center
U.S. Geological Survey
Pacific Science Center
400 Natural Bridges Drive
Santa Cruz, CA 95060
http://walrus.wr.usgs.gov/

Part or all of this report is presented in Portable Document Format (PDF). For best results viewing and printing PDF documents, it is recommended that you download the documents to your computer and open them with Adobe Reader. PDF documents opened from your browser may not display or print as intended. Download the latest version of Adobe Reader, free of charge.


Suggested citation:

Gardner, James V., Dartnell, Peter, Sulak, Kenneth J., 2002, Multibeam Mapping of the Pinnacles Region, Gulf of Mexico: U.S. Geological Survey Open-File Report 02-006, http://pubs.usgs.gov/of/2002/0006/.



 


Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://pubs.usgs.gov/of/2002/0006/
Page Contact Information: GS Pubs Web Contact
Page Last Modified: Monday, March 03, 2014, 05:24:23 PM