School of Applied Physics, Kingston University, Penrhyn Road, KT1 2EE, Kingston-Upon-Thames, Surrey, England.
Environ Geochem Health. 1993 Sep;15(2-3):145-51. doi: 10.1007/BF02627832.
The south-west of England was designated by the National Radiological Protection Board (NRPB) as the first 'Radon Affected Area', as over 1% of the housing stock is estimated to have an indoor radon concentration in excess of the 200 Bq m(-3) Action Level. The situation is even worse for houses situated above uraniferous granite intrusions, where over 30% are thought to be above the Action Level.The aim of this study is to investigate the relationship between the level of radon in soil gas and the local geology. Particularly high radon levels were measured along major fault zones. This could be explained by: increased rate of migration of the radon due to the permeable fault, the presence of radium or radon-bearing ground water within the fault, or secondary uranium mineralisation. Seasonal variations are also considered.
英格兰西南部被国家放射性防护局（NRPB）指定为首个“氡影响区域”，因为据估计，超过 1%的住房存量的室内氡浓度超过 200 Bq m(-3) 的行动水平。对于位于铀成岩侵入体上方的房屋来说，情况甚至更糟，据认为超过 30%的房屋的氡浓度超过了行动水平。本研究的目的是调查土壤气体中氡的水平与当地地质之间的关系。在主要断层带测量到的氡水平特别高。这可以解释为：由于断层的渗透性，氡的迁移率增加，断层内存在镭或含氡地下水，或铀次生矿化。还考虑了季节性变化。
