Changes in Water Table and Soil Radon Emanation

Measurements of radon emanation in soil gas above a water table demonstrate changes related to the water table. A rising water table causes an increase in radon emanation, while a falling water table causes a decrease. When the water table stabilizes at relatively shallow depths, radon emanation is...

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Bibliographic Details
Published inEnvironmental forensics Vol. 5; no. 3; pp. 135 - 141
Main Authors Merolla, Paul, Mose, Douglas, Mushrush, George
Format Journal Article
LanguageEnglish
Published Taylor & Francis Group 01.09.2004
Subjects
indoor radon
soil porosity
soil radon
water table
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Summary:Measurements of radon emanation in soil gas above a water table demonstrate changes related to the water table. A rising water table causes an increase in radon emanation, while a falling water table causes a decrease. When the water table stabilizes at relatively shallow depths, radon emanation is less than when it stabilizes at greater depths. These differences are all thought to be related to the volume of water-free pore space above the water table. These relationships may explain previously noted seasonal changes in indoor radon concentrations (more indoor radon during times of low and rising water table; less during times of high and falling water table).
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ISSN:1527-5922
1527-5930
DOI:10.1080/15275920490506708