Exhalation of radon and thoron: the question of the effect of thermal gradients in soil

Details Exhalation of radon and thoron: the question of the effect of thermal gradients in soil Exhalation of radon and thoron: the question of the effect of thermal gradients in soil

Jul 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983e%26psl..64...56s&link_type=abstract

Earth and Planetary Science Letters, Volume 64, Issue 1, p. 56-60.

Physics

8

Scientific paper

Experimental measurements show no evidence for diurnal variation in exhalation of radon and thoron from soil due to convection induced by thermal gradients in the top few decimeters of soil as suggested by several authors. Estimates based on convective calculations indicate that even in the unlikely event of either vertical temperature gradients large enough to cause vertical instability, or horizontal gradients sufficient to cause significant convection, any effect would be too small to be detected. These same calculations suggest that it is difficult to conceive of cases involving typical thermal gradients in unfractured porous media such as soil where thermally induced convection would play an important role in transport of radon or thoron.
Also at Los Alamos National Laboratory.

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