Earth-prints repository, logo   DSpace

About DSpace Software
|earth-prints home page | roma library | bologna library | catania library | milano library | napoli library | palermo library
Please use this identifier to cite or link to this item:

Authors: Cannata, A.*
Giudice, G.*
Gurrieri, S.*
Montalto, P.*
Alparone, S.*
Di Grazia, G.*
Favara, R.*
Gresta, S.*
Liuzzo, M.*
Title: Relationship between soil CO2 flux and volcanic tremor at Mt. Etna: Implications for magma dynamics
Title of journal: Environmental Earth Sciences
Series/Report no.: / (2009)
Publisher: Springer
Issue Date: 25-Nov-2009
DOI: 10.1007/s12665-009-0359-z
Keywords: Mt. Etna
Soil CO2 flux
Volcanic tremor
Cross-wavelet spectrum
Wavelet coherence
Cross correlation function
Abstract: Large 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 m per 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:05.02.01. Geochemical data
04.08.06. Volcano monitoring
05.02.02. Seismological data
Papers Published / Papers in press

Files in This Item:

File Description SizeFormatVisibility
Cannata et al 2009 ENGE.pdfMain article820.83 kBAdobe PDFView/Open

This item is licensed under a Creative Commons License
Creative Commons

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Share this record




Stumble it!



Valid XHTML 1.0! ICT Support, development & maintenance are provided by CINECA. Powered on DSpace Software. CINECA