Santorini Volcano: The intra-caldera unrest of the period of 2011-2012, as revealed by seismicity, temperature, sea-level, geochemical and GPS data

摘要: During the period 2011-2012 an unrest of the Santorini volcano (Thera island) in central Aegean Sea (Greece) was associated with a well-defined microseismic activity in the center of Santorini caldera. This microseismicity was spread out along the Kameni island line (a tectonovolcanic linear structure extending from the Kameni Isl. to the city of Fira-Thera). In this paper the results of the recordings of the volcano’s monitoring networks for the period 2011-2012 are briefly described. All these data have been produced under the responsibility or with the cooperation and assistance of ISMOSAV (Institute for the Study and Monitoring of Santorini Volcano). The Institute's (ISMOSAV) activities are intended to coordinate all the individual research efforts for the management of the volcanic risk. This seismovolcanic activity has provided a great opportunity for the Institute and the island’s local authorities to test the efficiency of the existing monitoring networks. Moreover, it was a great opportunity, to start the procedures for the preparation of appropriate emergency plans for future needs.