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

被引:11
作者
La Delfa, Santo [2 ,3 ]
Agostino, Ivan [2 ]
Morelli, Daniela [1 ]
Patane, Giuseppe [2 ]
机构
[1] Univ Catania, Dipartimento Fis & Astron, I-95123 Catania, Italy
[2] Univ Catania, Dipartimento Sci Geol, I-95129 Catania, Italy
[3] Osservatorio Meterol Geodinam & Ambientale, I-95024 Acireale, CT, Italy
关键词
Radon; Mt; Etna; b-Value;
D O I
10.1016/j.radmeas.2008.02.004
中图分类号
TL [原子能技术]; O571 [原子核物理学];
学科分类号
0827 ; 082701 ;
摘要
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. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1299 / 1304
页数:6
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