U. S. Geological Survey Open-File Report 01-154

SEA-FLOOR PHOTOGRAPHY FROM THE CONTINENTAL MARGIN PROGRAM:

A Pictorial Survey of Benthic Character and Habitats
Along the U.S. East Coast

Photographic Gallery of personnel, facilities and equipment from the Continental Margin Program

Joseph R. Frothingham, Jr. of WHOI uses a sonifier to break p samples from the ocean floor or coastal plain with ultra-high frequency sound waves (20,000 cycles per second). These sediments, then suspended in water, are analyzed for their particular qualities. This work is part of a joint WHOI-USGS study on the Atlantic Continental Shelf and Slope.