Geophysics

A lawn with bushes and forested mountains in the background. Clear skies with some clouds. Five people are on the lawn. Two are beside a large, almost 6m long meter. Two use a film camera. An army soldier. A helicopter hovers over them with a tow cable.
Geophysical measurements with a helicopter.
© Geolgogical Survey of Austria

One part of the airborne geophysical helicopter system is used for measuring apparent electrical conductivity of the ground and total intensity of the earth’s magnetic field.

Map of magnetic anomalies in Austria.
Magnetic anomalies in Austria.
© Geolgogical Survey of Austria

Measuring the total intensity of the earth’s magnetic field is useful for discovering ore bodies, raw materials, and for geological mapping in general.

Der Innenraum eines Hubschraubers. Rechts im Vordergrund eine große Box aus Metall mit Kabeln daran. Dahinter ein Sitz mit Tastatur davor. Im Hintergrund weitere Instumente.
Geophysikalische Mess- instrumente im Hubschrauber
© Geological Survey of Austria

One part of the airborne geophysical helicopter system is used for measuring natural and artificial radioactivity with a gamma ray spectrometer.