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Bathymetric survey on jet skis

Detailed Description

USGS researchers Patrick Barnard and Jeff Hansen surveying the bathymetry offshore of Crissy Field in San Francisco, California, on October 26, 2007. They are using the Coastal Profiling System—personal watercraft equipped with echo sounders and kinematic Global Positioning System (GPS) units. The Golden Gate Bridge is in the background.


Public Domain.