Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/7923
Authors: Mattia, M.* 
Bruno, V.* 
Cannavo, F.* 
Palano, M.* 
Title: Evidences of a contractional pattern along the northern rim of the Hyblean Plateau (Sicily, Italy) from GPS data
Journal: Geologica Acta 
Series/Report no.: /10(2012)
Publisher: Library of Geology (UB-CSIC) | Faculty of Geology, Martí i Franquès s/n 08028 Barcelona | Spain
Issue Date: Mar-2012
DOI: 10.1344/105.000001705
URL: http://www.geologica-acta.com/pdf/vol1001a06.pdf
Keywords: Hyblean Plateau
GPS
Active tectonics
Geodynamic
Subject Classification04. Solid Earth::04.03. Geodesy::04.03.01. Crustal deformations 
Abstract: In this paper we present the main results inferred from GPS data collected between 1998.00 and 2009.78 along the northern rim of the Hyblean Plateau from 9 continuous and 23 survey-mode sites. From a geological point of view, this area is of great interest because 1) it represents an important piece of the collision front between Nubia and Eurasia 2) it is very close to the biggest European volcano Mount Etna and 3) it has been hit by strong earthquakes in the past (1169 and 1693) that struggled the cities of Catania, Siracusa and Ragusa provoking tens of thousands of casualties. We have found that the ground deformation pattern clearly defines an area of prevailing contraction along the northern rim of the Hyblean Plateau with a maximum negative strain-rate of about 0.14µstrain/yr in agreement with both geological and Interferometric Synthetic Aperture Radar (InSAR) data. In addition, a transition to extensional regime is acting toward the central sector of the plateau. The velocity field referred to the Eurasian frame indicates that a large part of the plateau is dominated by a 5.4mm/yr northward motion.
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