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: Bonforte, A.*
Puglisi, G.*
Title: Magma uprising and flank dynamics on Mount Etna volcano, studied using GPS data (1994–1995)
Title of journal: Journal of Geophysical Research
Series/Report no.: 108 (B3)
Publisher: AGU
Issue Date: 18-Mar-2003
DOI: 10.1029/2002JB001845
Keywords: GPS
Ground deformation
Flank instability
Mt. Etna
Volcano dynamics
Abstract: Ground deformation occurring on Mount Etna from 1994 to 1995 is analyzed in this paper. This period was characterized by intense volcanic activity at the four summit craters, with frequent strombolian activity, fire fountains, and emplacement of several new lava flows. Four GPS surveys were carried out during this time, two as routinely planned each year and an additional two in 1995 to acquire more data to follow the activity at the NE Crater. The comparisons between GPS surveys are reported in terms of horizontal and vertical displacements of each station and in terms of areal dilatation and principal strain axes. During the period considered in this work, a trend of increasing areal dilatation of the volcano (at a rate of about 5 mstrain/yr) was recognized; it was briefly interrupted by a small contraction (about 2 mstrain), in the autumn of 1995, when volcanic activity at the summit craters began. In detail, the strain distribution of the network is analyzed; it allows the detection of areas showing anomalous behavior, such as the summit zone or the Pernicana fault. Inversions of the ground displacement vectors have been performed by appropriately combining numerical and analytical approaches. Results of the inversions suggest structures defining an eastward and southward sliding of the eastern and southeastern sectors of Mount Etna.
Appears in Collections:Papers Published / Papers in press
04.03.08. Theory and Models
04.03.07. Satellite geodesy
04.08.06. Volcano monitoring
04.03.06. Measurements and monitoring

Files in This Item:

File SizeFormatVisibility
Bonforte&Puglisi_JGR_2003.pdf603.78 kBAdobe PDFView/Open

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