SPGM Helicopter Airborne Geophysical Survey
![Image shows a helicopter with a red-tipped stinger sticking out front taking off from a snow-covered airport.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/media/images/SPGM_helicopter_photo2.png?itok=GtDhfUCR)
Detailed Description
A helicopter outfitted for an airborne geophysical survey. The boom extending from the front of the helicopter is called a stinger. The bulb at the end of the stinger houses a magnetometer, the instrument used to measure the Earth's magnetic field. This configuration minimizes interference from the magnetic field of the helicopter. Image courtesy of New Sense Geophysics Ltd.
Sources/Usage
Public Domain.