Abstract
In this paper a theoretic model is proposed to calculate the gas velocity in the subsoil based onradon concentration variations. The general transport equation for radon in a homogeneous soil with constantporosity is assumed. The diffusion coefficient and the gas velocity being constant. In order to illustrate the mo-del, three geological areas were considered: the Irazú and Arenal volcanoes, situated in the volcanic range inCosta Rica, and the Agua Caliente fault located in San José, Costa Rica.Comments
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