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About the use of radon in the surveillance of volcanoes from Central America; De l`utilisation du radon dans la surveillance des volcans d`amerique centrale

Abstract

Anomalous fluctuations of radon content in soil gases, fumaroles or thermal sources associated with volcanic systems are considered as precursors of deep degassing phenomena. Radon measurements in soil gases were performed for several years on three active volcanoes of Costa-Rica (Arenal, Irazu, Poas), also on El Chichon and Colima volcanoes in Mexico and more recently on the Popocatepetl since its reactivation in December 1994. Data acquisition was initially performed using plastic detectors with a 15 days integration. Since 1993, autonomous automatic probes are used and give hourly measurements. A nine stations network for ground measurements is installed on the Poas since 1982. Radon and Cl{sup -}, F{sup -} and SO{sub 4}{sup 2-} variations of the main crater lake are examined and correlated with the volcanic activity which led to the decay and disappearing of the lake in April 1989. On the Irazu, five stations were installed in 1982 and 3 automatic ones were added in November 1993. Results obtained so far are discussed according to the phreatic eruption of December 1994. The Popocatepetl measurements obtained since December 1994 are presented too. Abstract only. (J.S.).
Authors:
Fernandez, E; [1]  Garcia Vindas, R; Monnin, M; Seidel, J L; [2]  Segovia, N [3] 
  1. Obviscori, Heridia (Costa Rica)
  2. Centre National de la Recherche Scientifique (CNRS), 34 -Montpellier (France). Centre d`Etudes Phytosociologiques et Ecologiques Louis-Emberger
  3. ININ, Mexico (Mexico)
Publication Date:
Dec 31, 1996
Product Type:
Technical Report
Report Number:
SGF-BSV-39
Reference Number:
SCA: 540130; PA: AIX-29:010135; EDB-98:062243; SN: 98001937626
Resource Relation:
Other Information: PBD: 1996; Related Information: Is Part Of Volcanology Section Bulletin. French Geologic Society; Boudon, G. [I.P.G.P. - Observatoire Volcanologique, 75 - Paris (France)]; Gourgaud, A. [Universite Blaise Pascal, 63 - Clermont Ferrand (France)]; Soler, E. [Universite Paris 6, Paris (France)]; PB: 20 p.; Bulletin de la Section de Volcanologie. Societe Geologique de France
Subject:
54 ENVIRONMENTAL SCIENCES; COSTA RICA; DEGASSING; ERUPTION; FUMAROLES; HYDROTHERMAL SYSTEMS; MEXICO; RADON; VOLCANISM; VOLCANOES
OSTI ID:
607176
Research Organizations:
Institut de Physique du Globe de Paris (IPGP), 75 - Paris (France). Observatoire volcanologique
Country of Origin:
France
Language:
French
Other Identifying Numbers:
Other: ON: DE98611651; TRN: FR9703436010135
Availability:
INIS; OSTI as DE98611651
Submitting Site:
FRN
Size:
pp. 10
Announcement Date:
Jun 17, 1998

Citation Formats

Fernandez, E, Garcia Vindas, R, Monnin, M, Seidel, J L, and Segovia, N. About the use of radon in the surveillance of volcanoes from Central America; De l`utilisation du radon dans la surveillance des volcans d`amerique centrale. France: N. p., 1996. Web.
Fernandez, E, Garcia Vindas, R, Monnin, M, Seidel, J L, & Segovia, N. About the use of radon in the surveillance of volcanoes from Central America; De l`utilisation du radon dans la surveillance des volcans d`amerique centrale. France.
Fernandez, E, Garcia Vindas, R, Monnin, M, Seidel, J L, and Segovia, N. 1996. "About the use of radon in the surveillance of volcanoes from Central America; De l`utilisation du radon dans la surveillance des volcans d`amerique centrale." France.
@misc{etde_607176,
title = {About the use of radon in the surveillance of volcanoes from Central America; De l`utilisation du radon dans la surveillance des volcans d`amerique centrale}
author = {Fernandez, E, Garcia Vindas, R, Monnin, M, Seidel, J L, and Segovia, N}
abstractNote = {Anomalous fluctuations of radon content in soil gases, fumaroles or thermal sources associated with volcanic systems are considered as precursors of deep degassing phenomena. Radon measurements in soil gases were performed for several years on three active volcanoes of Costa-Rica (Arenal, Irazu, Poas), also on El Chichon and Colima volcanoes in Mexico and more recently on the Popocatepetl since its reactivation in December 1994. Data acquisition was initially performed using plastic detectors with a 15 days integration. Since 1993, autonomous automatic probes are used and give hourly measurements. A nine stations network for ground measurements is installed on the Poas since 1982. Radon and Cl{sup -}, F{sup -} and SO{sub 4}{sup 2-} variations of the main crater lake are examined and correlated with the volcanic activity which led to the decay and disappearing of the lake in April 1989. On the Irazu, five stations were installed in 1982 and 3 automatic ones were added in November 1993. Results obtained so far are discussed according to the phreatic eruption of December 1994. The Popocatepetl measurements obtained since December 1994 are presented too. Abstract only. (J.S.).}
place = {France}
year = {1996}
month = {Dec}
}