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dc.description.abstractVolcanic history of Santorini over recent years records a seismo-volcanic unrest in 2011–12 with a non-eruptive behavior. The volcano deformation state following the unrest was investigated through multi-sensor Synthetic Aperture Radar Interferometry (InSAR) time series. We focused on the analysis of Copernicus Sentinel-1, Radarsat-2 and TerraSAR-X Multi-temporal SAR Interferometric (MT-InSAR) results, for the post-unrest period 2012–17. Data from multiple Sentinel-1 tracks and acquisition geometries were used to constrain the E-W and vertical components of the deformation field along with their evolution in time. The interpretation of the InSAR observations and modelling provided insights on the post-unrest deformation pattern of the volcano, allowing the further re-evaluation of the unrest event. The increase of subsidence rates on Nea Kameni, in accordance with the observed change of the spatial deformation pattern, compared to the pre-unrest period, suggests the superimposition of various deformation sources. Best-fitting inversion results indicate two deflation sources located at southwestern Nea Kameni at 1 km depth, and in the northern intra-caldera area at 2 km depth. A northern sill-like source interprets the post-unrest deflation attributed to the passive degassing of the magma intruded at 4 km during the unrest, while an isotropic source at Nea Kameni simulates a prevailing subsidence occurring since the pre-unrest period (1992–2010).en
dc.relation.ispartofRemote Sensingen
dc.relation.ispartofseries/11 (2019)en
dc.rightsCC0 1.0 Universalen
dc.subjectremote sensingen
dc.subjectgeodetic modellingen
dc.subjectsantorini volcanoen
dc.titleMulti-Sensor SAR Geodetic Imaging and Modelling of Santorini Volcano Post-Unrest Responseen
dc.description.pagenumberID 259en
dc.subject.INGV04.08. Volcanologyen
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dc.description.obiettivoSpecifico2V. Struttura e sistema di alimentazione dei vulcanien
dc.description.obiettivoSpecifico4V. Dinamica dei processi pre-eruttivien
dc.description.journalTypeJCR Journalen
dc.contributor.authorPapageorgiou, Elenaen
dc.contributor.authorFoumelis, Michaelen
dc.contributor.authorTrasatti, Elisaen
dc.contributor.authorVentura, Guidoen
dc.contributor.authorRaucoules, Danielen
dc.contributor.authorMouratidis, Antoniosen
dc.contributor.departmentSchool of Geology, Aristotle University of Thessaloniki (AUTh), 54124 Thessaloniki, Greeceen
dc.contributor.departmentBRGM—French Geological Survey, 3 Claude-Guillemin, 45060 Orléans, Franceen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italiaen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italiaen
dc.contributor.departmentBRGM—French Geological Survey, 3 Claude-Guillemin, 45060 Orléans, Franceen
dc.contributor.departmentSchool of Geology, Aristotle University of Thessaloniki (AUTh), 54124 Thessaloniki, Greeceen
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item.openairecristype of Geology, Aristotle University of Thessaloniki (AUTh), 54124 Thessaloniki, Greece-—French Geological Survey, 3 Claude-Guillemin, 45060 Orléans, France- Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia- Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia-—French Geological Survey, 3 Claude-Guillemin, 45060 Orléans, France- of Geology, Aristotle University of Thessaloniki (AUTh), 54124 Thessaloniki, Greece- Nazionale di Geofisica e Vulcanologia- Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.classification.parent04. Solid Earth-
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