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Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/3138

Authors: Palano, M.*
Puglisi, G.*
Gresta, S.*
Title: Ground deformation patterns at Mt. Etna from 1993 to 2000 from joint use of InSAR and GPS techniques
Issue Date: 2007
DOI: 10.1016/j.jvolgeores.2007.08.014
URL: www.sciencedirect.com
Keywords: GPS
InSAR
Etna
Ground deformations
modelling
Abstract: Combined GPS measurements and radar interferometry (InSAR) have been applied at Mt. Etna to study the ground deformation affecting the volcano both over the long- (1993-2000) and short-term (1997-1998 and 1998-2000). The aim was to better understand the dynamics of the volcano during the magma-recharging phase following the 1991-93 eruption. Since 1993, InSAR and GPS data indicate that Mt. Etna has undergone an inflation. A deep intrusion was detected by InSAR, on the western flank of the volcano, between March and May 1997. In the following months, this intrusion rose up leading to a seismic swarm occurring in January 1998 in the western sector. This now shallow intrusion is confirmed by GPS data. From 1998 to 2000, a general deflation affecting the upper part of the volcano was detected. Over the whole study period, a continuous eastward to south-eastward motion of the eastern sector of the volcano was also evidenced. The analytical inversions of GPS data inferred a plane dipping about 12°ESE, located beneath the eastern flank of the volcano at a depth of 1.4 km b.s.l.. The movement along this plane is able to reproduce the observed south-eastward motion of a sector bounded northward by the Pernicana fault, westward by the North-East Rift and the South Rift, and southward by the Mascalucia-Tremestieri-Trecastagni fault system. InSAR data have validated this model.
Appears in Collections:Manuscripts
04.03.07. Satellite geodesy
04.08.06. Volcano monitoring

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2007 - Palano et al - [ETNA 1993-2000] - JVGR.pdfMain article4.47 MBAdobe PDFView/Open


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