Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/460
Authors: | Puglisi, G.* Bonforte, A.* |
Title: | Dynamics of Mount Etna Volcano inferred from static and kinematic GPS measurements | Journal: | JOURNAL OF GEOPHYSICAL RESEARCH | Series/Report no.: | B11404/109(2004) | Publisher: | AGU | Issue Date: | 13-Nov-2004 | DOI: | 10.1029/2003JB002878 | Keywords: | Mount Etna ground deformation GPS |
Subject Classification: | 04. Solid Earth::04.03. Geodesy::04.03.01. Crustal deformations 04. Solid Earth::04.03. Geodesy::04.03.05. Gravity variations 04. Solid Earth::04.03. Geodesy::04.03.07. Satellite geodesy 04. Solid Earth::04.07. Tectonophysics::04.07.07. Tectonics 04. Solid Earth::04.08. Volcanology::04.08.03. Magmas |
Abstract: | Ground deformations measured on Mount Etna from late 1995 to mid-1998 using GPS observations are analyzed. Four GPS surveys were carried out during the considered period. In 1995 the GPS network consisted of 18 stations on the volcanic edifice and 6 stations around it. During the 1996 survey, 22 new monuments were added along a N-S profile crossing the summit craters area. This profile was surveyed by a semikinematic method, allowing greater spatial detail to be achieved on the uppermost part of the volcano. The comparisons between the GPS surveys are reported here in terms of horizontal and vertical displacements for each station and also in terms of areal dilatation and strain distribution. This last parameter continues its ascending trend, at a rate of ~5 μstrain yr−1, already shown in the previous period, after the end of the 1991–1993 flank eruption. Inversion of the ground deformation patterns permits investigation of the evolution of both the position and dynamics of magma reservoirs beneath the volcano, consistently associated with a general eastward sliding of its eastern sector. This study allows us to define the nonuniqueness of ground deformation sources through the investigated period, suggesting that the plumbing system of the volcano is made up of a complex system of single intrusions occurring at different times. |
Appears in Collections: | Article published / in press |
Files in This Item:
File | Description | Size | Format | Existing users please Login |
---|---|---|---|---|
948 Puglisi and Bonforte.pdf | 784.85 kB | Adobe PDF | ||
AGU.html | 490 B | HTML | View/Open |
WEB OF SCIENCETM
Citations
50
64
checked on Feb 10, 2021
Page view(s)
154
checked on Apr 24, 2024
Download(s)
83
checked on Apr 24, 2024