A survey helicopter used for airborne electromagnetic surveys
![Photo of a survey helicopter](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/geology-groundwater-survey-helicopter.jpg?itok=rfpf_MoY)
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.