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Evolution of Santorini Volcano dominated by episodic and rapid fluxes of melt from depth

Nature Geoscience volume 5, pages 749–754 (2012)Cite this article

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Abstract

Santorini Volcano, the site of the catastrophic Minoan eruption in Greece, exhibits two distinct eruptive styles: small, effusive eruptions occur relatively frequently and build shields and domes of lava, whereas large explosive eruptions occur rarely, at intervals of 10,000–30,000 years. Both types of eruption were thought to incubate in a shallow magma chamber that is continually charged by small batches of melt injected into the chamber from below. However, petrological work suggests that at least 15% of the material ejected during the Minoan explosive eruption arrived in the magma chamber less than 100 years before the eruption. Here we use Satellite Radar Interferometry (InSAR) and Global Positioning System (GPS) measurements of surface deformation at Santorini to show that 10–20 million m3 of magma have been intruded beneath the volcano since January 2011. This volume is equivalent to 10–50% of the volumes of recorded dome-forming eruptions. GPS and triangulation data show that this is the only volumetrically significant intrusion to have occurred since 1955, shortly after the last eruption. Our observations imply that whether Santorini is in an explosive or dome-forming phase, its shallow magma chamber is charged episodically by high-flux batches of magma. The durations of these events are short in comparison with the intervening periods of repose and their timing is controlled by the dynamics of deeper magma reservoirs.

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Figure 1: The islands of the Santorini volcanic centre, and the location of the centre of recent volcanic and seismic activity.
Figure 2: InSAR measurements, and fits to them of the best-fitting spherical inflationary source, whose parameters are given in Table 2.
Figure 3: Bounds on the location and volume of the magma body intruded beneath Santorini since January 2011.
Figure 4: Horizontal surface displacements of Santorini between 1955 and 2011 from triangulation and GPS data.

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References

  1. Friedrich, W. et al. Santorini eruption radiocarbon dated to 1627–1600 BC. Science 312, 548–548 (2006).

    Article  Google Scholar 

  2. Fouqué, F. Santorin et ses éruptions(Masson et Cie 1879) (Translation: McBirney, A. R. Santorini and Its Eruptions by Ferdinand Fouqué (Johns Hopkins Univ. Press 1998).

  3. Barton, M. & Huijsmans, J. Post-caldera dacites from the Santorini volcanic complex, Aegean Sea, Greece: An example of the eruption of lavas of near-constant composition over a 2200 year period. Contrib. Mineral. Petrol. 94, 472–495 (1986).

    Article  Google Scholar 

  4. Druitt, T. H. et al. Santorini Volcano Vol. 19 (Geol. Soc. Lond. Memoir, 1999).

    Google Scholar 

  5. Nicholls, I. A. Petrology of Santorini volcano, Cyclades, Greece. J. Petrol. 12, 67–119 (1971).

    Article  Google Scholar 

  6. Martin, V., Holness, M. & Pyle, D. Textural analysis of magmatic enclaves from the Kameni Islands, Santorini, Greece. J. Volcanol. Geotherm. Res. 154, 89–102 (2006).

    Article  Google Scholar 

  7. Martin, V. et al. Bang! month-scale eruption triggering at Santorini volcano. Science 321, 1178 (2008).

    Article  Google Scholar 

  8. Zellmer, G., Blake, S., Vance, D., Hawkesworth, C. & Turner, S. Plagioclase residence times at two island arc volcanoes (Kameni Islands, Santorini, and Soufrière, St. Vincent) determined by Sr diffusion systematics. Contrib. Mineral. Petrol. 136, 345–357 (1999).

    Article  Google Scholar 

  9. Higgins, M. D. Magma dynamics beneath Kameni volcano, Thera, Greece, as revealed by crystal size and shape measurements. J. Volcanol. Geotherm. Res. 70, 37–48 (1996).

    Article  Google Scholar 

  10. Mann, A. Trace-element geochemistry of high alumina basalt-andesite-dacite-rhyolite lavas of the main volcanic series of Santorini volcano, Greece. Contrib. Mineral. Petrol. 84, 43–57 (1983).

    Article  Google Scholar 

  11. Sparks, R., Sigurdsson, H. & Wilson, L. Magma mixing—mechanism for triggering acid explosive eruptions. Nature 267, 315–318 (1977).

    Article  Google Scholar 

  12. Druitt, T. H., Costa, F., Deloule, E., Dungan, M. & Scaillet, B. Decadal to monthly timescales of magma transfer and reservoir growth at a caldera volcano. Nature 482, 77–80 (2012).

    Article  Google Scholar 

  13. Pyle, D. & Elliott, J. Quantitative morphology, recent evolution, and future activity of the Kameni Islands volcano, Santorini, Greece. Geosphere 2, 253–268 (2006).

    Article  Google Scholar 

  14. Newman, A. V. et al. Recent geodetic unrest at Santorini Caldera, Greece. Geophys. Res. Lett. 39, L06309 (2012).

    Article  Google Scholar 

  15. Mogi, K. Relations between the eruptions of various volcanoes and the deformations of the ground sources around them. Bull. Earthq. Res. Inst. Jpn 36, 99–134 (1958).

    Google Scholar 

  16. McTigue, D. F. Elastic stress and deformation near a finite spherical magma body: resolution of the point source paradox. J. Geophys. Res. 92, 12931–12940 (1987).

    Article  Google Scholar 

  17. Davis, P. Surface deformation due to inflation of an arbitrarily oriented triaxial ellipsoidal cavity in an elastic half-space, with reference to Kilauea volcano, Hawaii. J. Geophys. Res. 91, 7429–7438 (1986).

    Article  Google Scholar 

  18. Yang, X-M., Davis, P. M. & Dieterich, J. H. Deformation from inflation of a dipping finite prolate spheroid in an elastic half-space as a model for volcanic stressing. J. Geophys. Res. 93, 4249–4257 (1988).

    Article  Google Scholar 

  19. Newman, A., Dixon, T. & Gourmelen, N. A four-dimensional viscoelastic deformation model for Long Valley caldera, California, between 1995 and 2000. J. Volcanol. Geotherm. Res. 150, 244–269 (2006).

    Article  Google Scholar 

  20. Sun, R. Theoretical size of hydraulically induced horizontal fractures and corresponding surface uplift in an idealized medium. J. Geophys. Res. 74, 5995–6011 (1969).

    Article  Google Scholar 

  21. Segall, P. Earthquake and Volcano Deformation (Princeton Univ. Press, 2010).

    Book  Google Scholar 

  22. Rivalta, E. & Segall, P. Magma compressibility and the missing source for some dike intrusions. Geophys. Res. Lett. 35, L04306 (2008).

    Article  Google Scholar 

  23. Mastin, L. G., Roeloffs, E., Beeler, N. M. & Quick, J. E. in A Volcano Rekindled: The Renewed Eruption of Mount St Helens, 2004–2006 (eds Sherrod, D. R., Scott, W. E. & Stauffer, P. H.) Ch. 22, 462–488 (US Geological Survey, 2008).

    Google Scholar 

  24. Stiros, S. C., Psimoulis, P., Vougioukalakis, G. & Fyticas, M. Geodetic evidence and modeling of a slow, small-scale inflation episode in the Thera (Santorini) volcano caldera, Aegean Sea. Tectonophysics 494, 180–190 (2010).

    Article  Google Scholar 

  25. Saltogianni, V. & Stiros, S. C. Modeling the Mogi magma source centre of the Santorini (Thera) volcano, Aegean Sea, Greece, 1994-1999, based on a numerical-topological approach. Stud. Geophys. Geod. 56http://dx.doi.org/10.1067/s11200-012-0408-z (2012).

  26. Chang, W-L., Smith, R.B., Farrell, J. & Puskas, C. An extraordinary episode of Yellowstone caldera uplift, 2004-2010, from GPS and InSAR observations. Geophys. Res. Lett. 37, L23302 (2010).

    Article  Google Scholar 

  27. Fournier, T. J., Pritchard, M. E. & Riddick, S. N. Duration, magnitude, and frequency of subaerial volcano deformation events: New results from Latin America using InSAR and a global synthesis. Geochem. Geophys. Geosyst. 11, Q01003 (2010).

    Article  Google Scholar 

  28. Liu, Z., Dong, D. & Lundgren, P. Constraints on time-dependent volcanic source models at Long Valley caldera from 1996 to 2009 using InSAR and geodetic measurements. Geophys. J. Int. 187, 1283–1300 (2011).

    Article  Google Scholar 

  29. Mattioli, G. S. et al. Long term surface deformation of Soufrière Hills volcano, Montserrat from GPS geodesy: Inferences from simple elastic inverse models. Geophys. Res. Lett. 37, L00E13 (2010).

    Article  Google Scholar 

  30. Cottrell, E., Gardner, J. & Rutherford, M. Petrologic and experimental evidence for the movement and heating of the pre-eruptive Minoan rhyodacite (Santorini, Greece). Contrib. Mineral. Petrol. 135, 315–331 (1999).

    Article  Google Scholar 

  31. Gertisser, R., Preece, K. & Keller, J. The Plinian Lower Pumice 2 eruption, Santorini, Greece: Magma evolution and volatile behaviour. J. Volcanol. Geotherm. Res. 186, 387–406 (2009).

    Article  Google Scholar 

  32. Andújar, J., Scaillet, B., Pichavant, M. & Druitt, T. H. Differentiation conditions of a basaltic magma from Santorini and its bearing on andesitic/dacitic magma production. Eos. Trans. AGU (Fall Meeting Suppl.) abstr. #V43A-2354 (2010).

  33. Biggs, J., Wright, T., Lu, Z. & Parsons, B. Multi-interferogram method for measuring interseismic deformation: Denali Fault, Alaska. Geophys. J. Int. 170, 1165–1179 (2007).

    Article  Google Scholar 

  34. Bomford, G. Geodesy 4th edn (Oxford Univ. Press, 1980).

    Google Scholar 

  35. Pavlis, N., Holmes, S., Kenyon, S. & Factor, J. EGM2008: An Earth Gravitational Model to Degree 2160 (General Assembly of the European Geosciences Union, 2008).

    Google Scholar 

  36. Dach, R., Hugentobler, U., Fridez, P. & Meindl, M. Bernese GPS Software Version 5.0, User Manual, Tech. Rep., (Astronomical Institute, Univ. Bern, 2007).

  37. Dow, J., Neilan, R. E. & Rizos, C. The international GNSS service in a changing landscape of Global Navigation Satellite Systems. J. Geodesy 83, 191–198 (2009).

    Article  Google Scholar 

  38. http://igscb.jpl.nasa.gov/igscb/center/analysis/code.acn.

  39. http://geophysics.geo.auth.gr/.

  40. Siebert, L. & Simkin, T. Volcanoes of the World: An Illustrated Catalog of Holocene Volcanoes and their Eruptions, (Smithsonian Institution Digital Information Series GVP-3, http://www.volcano.si.edu/world 2002).

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Acknowledgements

We are grateful to A. Newman and S. Stiros for sharing data and ideas. The Hellenic Military Geographical Service kindly provided us with their triangulation data for Santorini. We are grateful to E. Fielding for discussions, and to the JPL ROI_PAC team for development of the TSX reader. We thank the Santorini Bellonio library and I. Perros for providing access to historical documents. We thank A. Argirou, C. Kay, R. Neely, E. Warren-Smith and the 2011 Greek Field Class of the Department of Earth Sciences, University of Oxford, for their assistance in the field. During our fieldwork the Nomikos Foundation and the Boatmen Union of Santorini kindly provided transport. This work was supported by NERC through grant NE/J011436/1, and by a loan of equipment from its Geophysical Equipment Facility. The National Centre for Earth Observation (NCEO) provided support through a studentship to M.M.P. All TerraSAR-X data are copyrighted by the German Space Agency (DLR), which provided them under scientific proposal GEO1228. All Envisat SAR data are copyrighted by the European Space Agency, which provided them under project AOE621 and through an STSE fellowship to J.B. We thank P. Moore and M. Davis for providing the digital elevation model used in the InSAR processing.

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Authors and Affiliations

  1. Department of Earth Sciences, University of Oxford, South Parks Road, Oxford, OX1 3AN, UK

    Michelle M. Parks, Philip England, Tamsin A. Mather, Kirill Palamartchouk, Barry Parsons & David M. Pyle

  2. School of Earth Sciences, University of Bristol, Bristol, BS8 1RJ, UK

    Juliet Biggs

  3. Department of Geology and Geoenvironment, University of Athens, Athens, Nomikou GR-15784, Greece

    Paraskevi Nomikou

  4. School of Civil Engineering and Geosciences, University of Newcastle, Newcastle upon Tyne, NE1 7RU, UK

    Kirill Palamartchouk

  5. Higher Geodesy Laboratory, National Technical University, Athens, NTUA GR-15780, Greece

    Xanthos Papanikolaou, Demitris Paradissis, Costas Raptakis & Vangelis Zacharis

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Contributions

J.B., P.E., T.A.M., D.P. and D.M.P. designed projects that, as a result of the volcanic unrest on Santorini, came together in this study. InSAR processing and analysis were undertaken by M.M.P. and J.B., and source modelling by P.E., J.B. and M.M.P. The re-occupation of old triangulation sites was coordinated by D.P. and carried out by D.P., C.R., V.Z., P.E., P.N. and M.M.P. Processing and interpretation of Greek triangulation network data were undertaken by D.P., C.R., X.N. and P.E. The GPS sites used in this study were installed by C.R., K.P. and B.P., and K.P. assisted in processing their data. P.E., M.M.P. and D.M.P. wrote the paper; all other authors then commented on and contributed to the final version.

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Correspondence to David M. Pyle.

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Parks, M., Biggs, J., England, P. et al. Evolution of Santorini Volcano dominated by episodic and rapid fluxes of melt from depth. Nature Geosci 5, 749–754 (2012). https://doi.org/10.1038/ngeo1562

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