Please use this identifier to cite or link to this item:
Authors: Patanè, D.* 
Di Grazia, G.* 
Cannata, A.* 
Montalto, P.* 
Boschi, E.* 
Title: The shallow magma pathway geometry at Mt. Etna volcano
Issue Date: 2008
Series/Report no.: /9 (2008)
DOI: 10.1029/2008GC002131
Keywords: volcano plumbing system
volcanic tremor
LP and VLP events
Mt. Etna
Subject Classification04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology 
Abstract: A fundamental goal of volcano seismology is to understand the dynamics of active magmatic systems in order to assess eruptive behavior and the associated hazard. Imaging of magma conduits, quantification of magma transport and investigation of long-period seismic sources, together with their temporal variations, are crucial for the comprehension of eruption-triggering mechanisms. At Mt. Etna volcano, several intense episodes of tremor activity were recorded during 2007, in association with strombolian activity and/or intense fire fountaining episodes occurring from the South East Crater (SEC). The locations of the tremor sources and of the long-period seismic events are used here to constrain both the area and the depth range of magma degassing, highlighting the geometry of the shallow conduits feeding SEC. The imaged conduits consist of two connected resonating dike-like bodies, NNW-SSE and NW-SE oriented, extending from sea level to the surface. In addition, we show how tremor, long-period (LP) and very-long-period (VLP) event locations and signatures reflect pressure fluctuations in the plumbing system associated with the ascent/discharge of gas-rich magma linked to the lava fountains. The evidence here reported, also corroborated by ground deformation variations, can help develop a better prediction and early-warning system for those eruptions (effusive or explosive) that apparently manifest no clear precursors.
Appears in Collections:Papers Published / Papers in press

Files in This Item:
File Description SizeFormat 
Patane_et_al_2008.pdf1.43 MBAdobe PDFView/Open
Show full item record

Page view(s)

Last Week
Last month
checked on Aug 21, 2018


checked on Aug 21, 2018

Google ScholarTM