Water chemistry and soil radon survey at the Poas volcano (Costa Rica)

J. Barquero, E. Fernandez, M. Monnin, J. L. Seidel, N. Segovia


Radon-in-soil monitoring at the Poas volcano (Costa Rica) has been performed together with water chemistry
from the hot crater lake since 1981 and 1983 respectively. The results are discussed as a function of the eruptive
evolution of the volcano over a 13 years period (1981-1994). It is shown that no definitely clear precursory radon
signals have been recorded. On the contrary, ionic species concentrations are likely to be considered good precursors,
together with the temperature variations of the crater lake water.


Poas volcano;geochemistry;radon;precursor

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DOI: https://doi.org/10.4401/ag-3195
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Published by INGV, Istituto Nazionale di Geofisica e Vulcanologia - ISSN: 2037-416X