Soil radon concentration and effective stress variation at Mt. Etna (Sicily) in the period January 2003–April 2005

Autor:	Ivan Agostino, Santo La Delfa, Giuseppe Patanè, D. Morelli
Rok vydání:	2008
Předmět:	geography Radiation geography.geographical_feature_category Effective stress Maximum likelihood chemistry.chemical_element Radon Atmospheric sciences Etna volcano Volcano chemistry Magma Period (geology) Environmental science Variation (astronomy) Instrumentation
Zdroj:	Radiation Measurements. 43:1299-1304
ISSN:	1350-4487
DOI:	10.1016/j.radmeas.2008.02.004
Popis:	In this study we discuss the relationship between the in-soil radon concentration and the effective stress variation at Mt. Etna volcano in the period January 2003–April 2005. The acquired radon concentration trend was compared with the one obtained by the b - value variation analysis in the frequency–magnitude relationship for earthquakes that occurred at Mt. Etna volcano (Sicily) during the investigation period. The b - value calculated using both the maximum likelihood and the least square methods shows a similar trend and, in particular, an increase starting a few months before the 7th September 2004 eruption and a decrease during the following 9 months. A similar trend was recorded during 2003 when a recharging magma phase of the volcano occurred. Results obtained by studying the b - value trend and the comparison with in-soil radon concentration are also discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8fcdd2301b31a17d1b6725746d74fe87 https://doi.org/10.1016/j.radmeas.2008.02.004 Zobrazit plný text záznamu Full Text from ScienceDirect