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A survey helicopter used for airborne electromagnetic surveys

September 2016 (approx.)

Detailed Description

Airborne electromagnetic (AEM) surveys use the same transmitter/receiver set up as a ground-based EM survey, but the technologies are towed below a low-flying aircraft. In September 2016, USGS ran a AEM survey in Kern County, California. USGS Photo by Laurel Rogers.

Sources/Usage

Public Domain.