GPR

Ground Penetrating Radar (GPR) is one of the most recent developments in the field of applied geophysics. It is based on the underground propagation of electromagnetic waves with frequencies from approx. 10 MHz to 4 GHz. Its beginnings, however, go back to the early 1970s when the Geozentrum did an intense amount of work on methods for exploring the subsurface with very short high frequency pulses. This work was initially concentrated on salt rock because it is an ideal medium for propagating electromagnetic waves. 

Further development of the survey technique opened up an increasingly wide range of applications, including:

• Exploring geological bedding structure
• Confirming fractures and fault zones
• Exploring cavities
• Soil investigations
• Locating single objects (pipes, cables, etc.)
• Prospecting
• Archaeological surveys
• Landmine clearance
• Underground exploration in salt mines

More recently, continuous geoelectric surveys using the OhmMapper effectively complement the georadar survey results.