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Title: Recent geodetic unrest at Santorini Caldera, Greece
Authors: Newman, Andrew V.
Stiros, Stathis
Feng, Lujia
Psimoulis, Panos
Moschas, Fanis
Saltogianni, Vasso
Jiang, Yan
Papazachos, Costas
Panagiotopoulos, Dimitris
Karagianni, Eleni
Vamvakaris, Domenikos
Issue Date: 2012
Source: Newman, A. V., Stiros, S., Feng, L., Psimoulis, P., Moschas, F., Saltogianni, V., et al. (2012). Recent geodetic unrest at Santorini Caldera, Greece. Geophysical Research Letters, 39(6).
Series/Report no.: Geophysical research letters
Abstract: After approximately 60 years of seismic quiescence within Santorini caldera, in January 2011 the volcano reawakened with a significant seismic swarm and rapidly expanding radial deformation. The deformation is imaged by a dense network of 19 survey and 5 continuous GPS stations, showing that as of 21 January 2012, the volcano has extended laterally from a point inside the northern segment of the caldera by about 140 mm and is expanding at 180 mm/yr. A series of spherical source models show the source is not migrating significantly, but remains about 4 km depth and has expanded by 14 million m3since inflation began. A distributed sill model is also tested, which shows a possible N-S elongation of the volumetric source. While observations of the current deformation sequence are unprecedented at Santorini, it is not certain that an eruption is imminent as other similar calderas have experienced comparable activity without eruption.
ISSN: 1944-8007
DOI: 10.1029/2012GL051286
Research Centres: Earth Observatory of Singapore 
Rights: © 2012 American Geophysical Union. This paper was published in Geophysical Research Letters and is made available as an electronic reprint (preprint) with permission of American Geophysical Union. The paper can be found at the following official DOI: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EOS Journal Articles

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