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- W2002159868 abstract "Abstract The Santorini Volcanic Complex (SVC) has been in a dormant state for the last 60 years until January 2011 when upward influx of magma reawakened the volcano with intense radial ground deformation and inter-caldera seismicity that lasted until January 2012 but declined afterwards. This paper aims to study the ground deformation and the inferred tectonic implications of the SVC for the period 1992–2012 mainly based on the SqueeSAR™ technique and DGPS campaign results of our local network which incorporates available data on Internet from several continuous GPS stations established on the island. The spatial deformation of the SVC during the quiet period 1992–2010 was deduced by joint analysis of ERS1 and 2 and ENVISAT. It was found that the intra caldera Palaea Kammeni shield volcano was being uplifted (2–3 mm/yr) with increasing rate, whilst the adjacent Nea Kammeni shield volcano was being subsided (up to 6 mm/yr) with increasing rate. The rest of the SVC showed a velocity field varying from − 1 to + 2 mm/yr, indicating a rather linear deformation during that period. The results from the GPS network are in full agreement with the SqueeSAR results. Based on the results of SqueeSAR analysis of 12 ENVISAT images, and DGPS/CGPS data to end 2012, the deformation for the unrest period 2011–2012 was non-linear being characterized by strong radial deformation in the northern part of the caldera (50–120 mm/yr), and accelerating values (> 130 mm/yr 2 ). Combined GPS/SqueeSAR Mogi modeling indicated a source located north of Nea Kammeni at a shallow depth. However, a progressively decreasing rate in deformation was noted at most GPS/CGPS station components after January 2012, indicating magma settlement consistent with the constantly decreasing rate of the inter-caldera seismicity. The faulting features seem to have a key role in the evolution of the deformation, which continues up the end 2012, but at a very low level." @default.
- W2002159868 created "2016-06-24" @default.
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- W2002159868 date "2013-05-01" @default.
- W2002159868 modified "2023-10-18" @default.
- W2002159868 title "SqueeSAR™ and GPS ground deformation monitoring of Santorini Volcano (1992–2012): Tectonic implications" @default.
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- W2002159868 doi "https://doi.org/10.1016/j.tecto.2013.03.012" @default.
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