%0 Journal Article %T The 2011-2012 unrest at Santorini rift: Stress interaction between active faulting and volcanism %+ Institut de Physique du Globe de Paris (IPGP) %A Feuillet, Nathalie %< avec comité de lecture %@ 0094-8276 %J Geophysical Research Letters %I American Geophysical Union %V 40 %P 3532-3537 %8 2013 %D 2013 %Z 2013GeoRL..40.3532F %R 10.1002/grl.50516 %K Santorini 2011-2012 volcanic unrest %K volcano-tectonic interactions %K earthquakes %K active normal faulting %K static stress transfer %K Aegean arc %Z Sciences of the Universe [physics]Journal articles %X Santorini, active normal faulting controls the emission of volcanic products. Such geometry has implication on seismic activity around the plumbing system during unrest. Static Coulomb stress changes induced by the 2011-2012 inflation within a preexisting NW-SE extensional regional stress field, compatible with fault geometry, increased by more than 0.5 MPa in an ellipsoid-shaped zone beneath the Minoan caldera where almost all earthquakes (96%) have occurred since beginning of unrest. Magmatic processes perturb the regional stress in the caldera where strike-slip rather than normal faulting along NE-SW striking planes are expected. The inflation may have also promoted more distant moderate earthquakes on neighboring faults as the M > 5 January 2012, south of Christiania. Santorini belongs to a set of en echelon NE-SW striking rifts (Milos, Nysiros) oblique to the Aegean arc that may have initiated in the Quaternary due to propagation of the North Anatolian fault into the Southern Aegean Sea. %G English %2 https://insu.hal.science/insu-03581781/document %2 https://insu.hal.science/insu-03581781/file/Geophysical%20Research%20Letters%20-%202013%20-%20Feuillet%20-%20The%202011%202012%20unrest%20at%20Santorini%20rift%20Stress%20interaction%20between%20active.pdf %L insu-03581781 %U https://insu.hal.science/insu-03581781 %~ INSU %~ UNIV-PARIS7 %~ AFRIQ %~ CNRS %~ IPGP %~ SORBONNE-UNIVERSITE %~ UNIV-PARIS %~ SU-TI %~ ALLIANCE-SU