Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/6569
AuthorsCannata, A.* 
Giudice, G.* 
Gurrieri, S.* 
Montalto, P.* 
Alparone, S.* 
Di Grazia, G.* 
Favara, R.* 
Gresta, S.* 
Liuzzo, M.* 
TitleRelationship between soil CO2 flux and volcanic tremor at Mt. Etna: Implications for magma dynamics
Issue DateAug-2010
Series/Report no./61 (2010)
DOI10.1007/s12665-009-0359-z
URIhttp://hdl.handle.net/2122/6569
KeywordsMt. Etna volcano
volcanic tremor
soil CO2
Subject Classification04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring 
AbstractLarge variations of the CO2 flux through the soil were observed between November 2002 and January 2006 at Mt. Etna volcano. In many cases, the CO2 flux was strongly influenced by changes in air temperature and atmospheric pressure. A new filtering method was then developed to remove the atmospheric influences on soil CO2 flux and, at the same time, to highlight the variations strictly related to volcanic activity. Successively, the CO2 corrected data were quantitatively compared with the spectral amplitude of the volcanic tremor by cross correlation function, cross-wavelet spectrum and wavelet coherence. These analyses suggested that the soil CO2 flux variations preceded those of volcanic tremor by about 50 days. Given that volcanic tremor is linked to the shallow (a few kilometer) magma dynamics and soil CO2 flux related to the deeper (*12 km b.s.l.) magma dynamics, the ‘‘delayed similarity’’ between the CO2 flux and the volcanic tremor amplitude was used to assess the average speed in the magma uprising into the crust, as about 170–260 mper day. Finally, the large amount of CO2 released before the onset of the 2004–2005 eruption indicated a deep ingression of new magma, which might have triggered such an eruption.
Appears in Collections:Papers Published / Papers in press

Files in This Item:
File Description SizeFormat 
Cannata et al., 2010 ENGE.pdf1.01 MBAdobe PDFView/Open
Show full item record

Page view(s)

183
Last Week
0
Last month
0
checked on Sep 19, 2017

Download(s)

25
checked on Sep 19, 2017

Google ScholarTM

Check

Altmetric