Geophysical surveys from the air are not conducted during which of the following: 1. seismic surveys 2. gamma spectrometry 3. magnetic survey 4. gravity survey?

Understand the Problem

The question is asking which type of geophysical survey is not conducted from the air. It provides four options including seismic surveys, gamma spectrometry, magnetic surveys, and gravity surveys to choose from.

More Information

Seismic surveys typically involve ground-based equipment to send and receive seismic waves, which doesn't align with the airborne method.

Tips

Mistakenly thinking seismic surveys can be airborne might occur because of unfamiliarity with their ground-based nature.

Sources

• Geophysical Methods in Geothermal Exploration - geocom.geonardo.com