Abstract
The probability of homes in Ireland having high indoor radon concentrations isestimated on the basis of known in-house radon measurements averaged over10 km × 10 km grid squares. The scope for using airborne gamma-ray spectrometer data for theTralee–Castleisland area of county Kerry and county Cavan to predict the radon potential(RP) in two distinct areas of Ireland is evaluated in this study. Airborne data arecompared statistically with in-house radon measurements in conjunction withgeological and ground permeability data to establish linear regression models andproduce radon potential maps. The best agreement between the percentage ofdwellings exceeding the reference level (RL) for radon concentrations in Ireland (% > RL), estimated from indoor radon data, and modelled RP in the Tralee–Castleisland area isproduced using models based on airborne gamma-ray spectrometry equivalent uranium(eU) and ground permeability data. Good agreement was obtained between the% > RL from indoor radon data and RP estimated from eU data in the Cavan area using terrainspecific models. In both areas, RP maps derived from eU data are spatially more detailedthan the published 10 km grid map. The results show the potential for using airborneradiometric data for producing RP maps.
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