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USGS researcher uses GPS-equipped backpack to measure sand elevations

By Pacific Coastal and Marine Science Center
A man walks on the beach wearing a yellow backpack with an antenna sticking up from it, holding a small machine
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Detailed Description

USGS oceanographer Dan Hoover uses a GPS-equipped backpack to measure sand elevations near the mouth of the San Lorenzo River in Santa Cruz, California, January 12, 2017. Surveys like this make long-term studies of coastal change possible.

Sources/Usage

Public Domain.