Abstract:ABSTRACT:We report the results of the study of diffuse H 2 emission from Poás volcano, Costa Rica. Three surveys were carried out in 2000, 2001 and 2002, to investigate soil H 2 distribution in and around Poás summit crater and to evaluate diffuse H 2 emission as a potential geochemical tool for the Poás volcano monitoring program. Soil H 2 contents showed a wide range of concentrations from 0.4 to 7,059 ppmV. Most of the study area showed low levels of H 2 in the soil atmosphere, and the highest values of soi… Show more
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