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|Authors: ||Palano, M.*|
|Title: ||Ground deformation patterns at Mt. Etna from 1993 to 2000 from joint use of InSAR and GPS techniques|
|Title of journal: ||Journal of Volcanology and Geothermal Research|
|Series/Report no.: ||/169 (2008)|
|Issue Date: ||2008|
|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 (1997-2000) in order 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 deeper 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. The 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 1.5 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:||04.08.06. Volcano monitoring|
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|2008 - Palano et al - [ETNA 1993-2000] - JVGR.pdf||Main articles||4.32 MB||Adobe PDF||View/Open
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