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AuthorsAlparone, S.* 
Gresta, S.* 
TitleLow frequency events at Mt. Etna: some problems and open questions
Issue DateMar-1996
Series/Report no.39/2
KeywordsMt. Etna
low frequency volcanic events
earthquake family
Subject Classification04. Solid Earth::04.08. Volcanology::04.08.99. General or miscellaneous 
AbstractA short period seismic array setting at Mt. Etna symmetrically in regard to the fracture of the 1991-1993 eruption allowed an analysis of low frequency events which occurred in the first phase of the mentioned eruption. We recorded about 50 events, 19 of them belong to a family. They show very low amplitude values and spectral peaks ranging 0.5-4.5 Hz. The evidence of this family of events shows how the process driving the dynamics of the fluid in the volcano is often the same.
Appears in Collections:Annals of Geophysics

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