Geophysical survey can be the most effective way to see beneath the ground.
A geophysical survey of this site was undertaken in 1996.
A variety of electric methods are used in geophysical survey.
There area many types of geophysical survey that are used in archaeology.
Conversion of a Yak-42 for geophysical survey and environmental monitoring.
A geophysical survey carried out at the end of 2005 revealed extensive remains in the area.
The raw data from a geophysical survey must often be converted to a more useful form.
Geophysical surveys are used in industry as well as for academic research.
The council recently conducted a geophysical survey of the cemetery and says there is room for perhaps 100 new graves.
Several geophysical surveys have been carried out to explore the remains which still exist below ground level.