Mapping radon-prone areas - a geophysical approach |
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Authors: | Shirav M U Vulkan |
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Institution: | (1) Geological Survey of Israel , 30 Malkhei Israel, Jerusalem 95501, Israel, IL;(2) Soreq Nuclear Research Center , Yavne 81800, Israel, IL |
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Abstract: | Radon-prone areas in Israel were mapped on the basis of direct measurements of radon (222Rn) in the soil/rock gas of all exposed geological units, supported by the accumulated knowledge of local stratigraphy and
sub-surface geology. Measurements were carried out by a modified alpha-track detection system, resulting in high radon levels
mainly in rocks of the Senonian-Paleocene-aged Mount Scopus Group, comprised of chert-bearing marly chalks, rich in phosphorite
which acts as the major uranium source. Issues of source depth, seasonal variations and comparison with indoor radon levels
are addressed as well. This approach could be applied to other similar terrains, especially the Mediterranean Phosphate Belt. |
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Keywords: | Radon Radon-prone areas Israel Mediterranean Phosphate Alpha-track detection Indoor radon Seasonal effects |
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