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Ocean current drifter

By Pacific Coastal and Marine Science Center 2007 (approx.)
A collage of photographs and a diagram to show a special plastic disc-shaped float, used to study ocean circulation.
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Detailed Description

Top left, at McNears Beach on San Pablo Bay, a boy discovered a USGS current drifter on March 11, 2007. Top right, Diagram (top and side views) of near-bottom "seabed" drifter used in USGS study of currents in the San Francisco Bay system and adjacent Pacific Ocean. Middle and bottom, near-bottom drifter found at McNears Beach, San Rafael, California, in March 2007.

Sources/Usage

Public Domain.