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Variations on the concentration of 222 Rn in the subsurface of the volcanic island of Tenerife, Canary Islands
Author(s) -
EffDarwich A.,
MartínLuis C.,
Quesada M.,
de la Nuez J.,
Coello J.
Publication year - 2002
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2002gl015387
Subject(s) - radon , volcano , geology , advection , flux (metallurgy) , atmospheric pressure , atmospheric sciences , diffusion , seismology , nuclear physics , physics , oceanography , chemistry , organic chemistry , thermodynamics
A simple theoretical model, based on the assumption that radon is transported by molecular diffusion combined with advective flow induced by barometric pressure, is used to investigate radon exhalation at three subsurface monitoring sites in the volcanic island of Tenerife, Canary Islands. The model is intended to filter out all known contributions to radon flux, in an attempt to find potential precursory signals of seismic and/or volcanic activity. For the period of observations (1 December 2000 to 1 April 2001), variations on radon concentration predicted by the model were in good agreement with those measured, confirming they were induced by atmospheric pressure changes.