Airborne radon hazard mapping - Løten, Hedmark County, Norway
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An airborne geophysical survey with ground follow-up work has been conducted in the Løten area with the intention og mapping the radon gas hazard from the alum shales in the region. The survey was conducted in two phases, with the first phase being the air- borne survey. In this phase, the shales were located with combined electro- magnetic and radiometric measurements. In the second phase, ground follow-up measurements were used to establish the correlation of the airborne measure- ments with radon gas in the soil and ground water. Further comparison of the airborne data with radon emanation and concentration data in houses has established that the airborne data can be used to locate areas with signifi- cant probability of having high radon gas accumulations.