A geographic information systems (GIS) and spatial modeling approach to assessing indoor radon potential at local level.

California Department of Health Services, Environmental Health Laboratory Branch, 850 Marina Bay Pkwy, Mailstop G365/EHLB, Richmond, CA 94804, USA.
Applied Radiation and Isotopes (Impact Factor: 1.06). 04/2006; 64(4):490-6. DOI: 10.1016/j.apradiso.2005.10.005
Source: PubMed

ABSTRACT This study integrates residential radon data from previous studies in Southern California (USA), into a geographic information system (GIS) linked with statistical techniques. A difference (p<0.05) is found in the indoor radon in residences grouped by radon-potential zones. Using a novel Monte Carlo approach, we found that the mean distance from elevated-radon residences (concentration>74 Bq m(-3)) to epicenters of large (> 4 Richter) earthquakes was smaller (p<0.0001) than the average residence-to-epicenter distance, suggesting an association between the elevated indoor-radon and seismic activities.