Systematic radon survey over active volcanoes

Seidel, J. L. and Monnin, M. and Garcia Vindas, J. R. and Ricard, L. P. and Staudacher, T. (1999) Systematic radon survey over active volcanoes. Il nuovo cimento C, 22 C (3-4). pp. 363-368. ISSN 1826-9885

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In-soil radon-222 monitoring has been conducted on active volcanoes, in particular on the Arenal, Irazu and Poas volcanoes in Costa Rica and on the Piton de la Fournaise volcano, La Réunion island. Automatic electronic probes buried in soil at one meter depth were used to study the short- and long-term fluctuations of radon related to the external parameters and/or related with the volcanic activity. Three radon stations are in operation on each Costa Rican volcano and a network of 24 stations (with 3 teletransmitted) is operated on the Piton de la Fournaise. Data obtained since 1993 on Costa Rica volcanoes are presented and radon anomalies recorded before the December 8, 1994 eruption of the Irazu volcano are discussed. The Piton de la Fournaise volcano is inactive since mid 1992. We could intensively study the influence of the external parameters on the radon behavior and individuate the type of perturbations induced on short-term measurements. One seismic crisis occurred on November 27, 1996. Radon anomalies appear on most of 50% of the stations 36 hours before the occurrence of the crisis.

Item Type: Article
Additional Information: Paper presented at the “Fourth International Conference on Rare Gas Geochemistry”, Rome, October 8-10, 1997.
Uncontrolled Keywords: Hydrology and glaciology; interactions between exterior sources and interior properties; conference proceedings
Subjects: 500 Scienze naturali e Matematica > 550 Scienze della Terra
Depositing User: Marina Spanti
Date Deposited: 10 Oct 2019 10:11
Last Modified: 10 Oct 2019 10:11

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