Crustal motion along the Calabro-Peloritano Arc as imaged by twelve years of measurements on a dense GPS network

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• 作者：Mario Mattia ; Mimmo Palano ; Valentina Bruno ; Flavio Cannavò
• 关键词：GPS ; Strain-rate ; Calabro-Peloritano Arc ; Modelling
• 刊名：Tectonophysics
• 出版年：2009
• 出版时间：25 October 2009
• 年：2009
• 卷：476
• 期：3-4
• 页码：528-537
• 全文大小：1802 K

文摘

In this work, we show the results of 12 years of continuous and survey-mode GPS measurements carried out along the western part of the Calabro-Peloritano Arc, from 1996 until the more recent acquisitions in 2008. The results highlight that a NW–SE-oriented ~ 0.15 μstrain/yr extension across the Messina Strait and the Aeolian–Tindari–Letojanni fault system is active. Moreover, a N–S compressive strain-rate (~ 0.65 μstrain/yr) is acting across Vulcano and Lipari Islands coupled with an extensional strain-rate of ~ 0.15 μstrain/yr in the E–W direction. Finally, taking into account the observed horizontal velocity field, an analytical inversion was performed to obtain a reliable model of deformation of the investigated area. The main results are consistent both with focal mechanism solutions and the current structural setting of the investigated area.