Recent geodetic unrest at Santorini Caldera, Greece

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 2...

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Main Authors: Newman, Andrew V., Stiros, Stathis, Feng, Lujia, Psimoulis, Panos, Moschas, Fanis, Saltogianni, Vasso, Jiang, Yan, Papazachos, Costas, Panagiotopoulos, Dimitris, Karagianni, Eleni, Vamvakaris, Domenikos
Other Authors: Earth Observatory of Singapore
Format: Article
Language:English
Published: 2013
Online Access:https://hdl.handle.net/10356/99795
http://hdl.handle.net/10220/11002
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-997952020-09-26T21:29:30Z Recent geodetic unrest at Santorini Caldera, Greece Newman, Andrew V. Stiros, Stathis Feng, Lujia Psimoulis, Panos Moschas, Fanis Saltogianni, Vasso Jiang, Yan Papazachos, Costas Panagiotopoulos, Dimitris Karagianni, Eleni Vamvakaris, Domenikos Earth Observatory of Singapore 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. Published version 2013-07-08T01:29:50Z 2019-12-06T20:11:38Z 2013-07-08T01:29:50Z 2019-12-06T20:11:38Z 2012 2012 Journal Article 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). 1944-8007 https://hdl.handle.net/10356/99795 http://hdl.handle.net/10220/11002 10.1029/2012GL051286 en Geophysical research letters © 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: [http://dx.doi.org/10.1029/2012GL051286]. 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. application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
description 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.
author2 Earth Observatory of Singapore
author_facet Earth Observatory of Singapore
Newman, Andrew V.
Stiros, Stathis
Feng, Lujia
Psimoulis, Panos
Moschas, Fanis
Saltogianni, Vasso
Jiang, Yan
Papazachos, Costas
Panagiotopoulos, Dimitris
Karagianni, Eleni
Vamvakaris, Domenikos
format Article
author Newman, Andrew V.
Stiros, Stathis
Feng, Lujia
Psimoulis, Panos
Moschas, Fanis
Saltogianni, Vasso
Jiang, Yan
Papazachos, Costas
Panagiotopoulos, Dimitris
Karagianni, Eleni
Vamvakaris, Domenikos
spellingShingle Newman, Andrew V.
Stiros, Stathis
Feng, Lujia
Psimoulis, Panos
Moschas, Fanis
Saltogianni, Vasso
Jiang, Yan
Papazachos, Costas
Panagiotopoulos, Dimitris
Karagianni, Eleni
Vamvakaris, Domenikos
Recent geodetic unrest at Santorini Caldera, Greece
author_sort Newman, Andrew V.
title Recent geodetic unrest at Santorini Caldera, Greece
title_short Recent geodetic unrest at Santorini Caldera, Greece
title_full Recent geodetic unrest at Santorini Caldera, Greece
title_fullStr Recent geodetic unrest at Santorini Caldera, Greece
title_full_unstemmed Recent geodetic unrest at Santorini Caldera, Greece
title_sort recent geodetic unrest at santorini caldera, greece
publishDate 2013
url https://hdl.handle.net/10356/99795
http://hdl.handle.net/10220/11002
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