Freysteinn Sigmundsson

All material, by year

2016

Magnús T. Gudmundsson, Kristín Jónsdóttir, Andrew Hooper, Eoghan P. Holohan, Sæmundur A. Halldórsson, Benedikt G. Ófeigsson, Simone Cesca, Kristín S. Vogfjörd, Freysteinn Sigmundsson, Thórdís Högnadóttir, Páll Einarsson, Olgeir Sigmarsson, Alexander H. Jarosch, Kristján Jónasson, Eyjólfur Magnússon, Sigrún Hreinsdóttir, Marco Bagnardi, Michelle M. Parks, Vala Hjörleifsdóttir, Finnur Pálsson, Thomas R. Walter, Martin P. J. Schöpfer, Sebastian Heimann, Hannah I. Reynolds, Stéphanie Dumont, Eniko Bali, Gudmundur H. Gudfinnsson, Torsten Dahm, Matthew J. Roberts, Martin Hensch, Joaquín M. C. Belart, Karsten Spaans, Sigurdur Jakobsson, Gunnar B. Gudmundsson, Hildur M. Fridriksdóttir, Vincent Drouin, Tobias Dürig, Guðfinna Aðalgeirsdóttir, Morten S. Riishuus, Gro B. M. Pedersen, Tayo van Boeckel, Björn Oddsson, Melissa A. Pfeffer, Sara Barsotti, Baldur Bergsson, Amy Donovan, Mike R. Burton, and Alessandro Aiuppa, 2016. Gradual caldera collapse at Bárdarbunga volcano, Iceland, regulated by lateral magma outflow. Science 353 (6296), aaf8988.

Sigmundsson, F. (2016), New insights into magma plumbing along rift systems from detailed observations of eruptive behavior at Axial volcano, Geophys. Res. Lett., 43, doi:10.1002/ 2016GL071884.

Vincent Drouin, Kosuke Heki, Freysteinn Sigmundsson, Sigrún Hreinsdóttir, Benedikt G. Ófeigsson; Constraints on seasonal load variations and regional rigidity from continuous GPS measurements in Iceland, 1997–2014. Geophys. J. Int. 2016; 205 (3): 1843-1858. doi: 10.1093/gji/ggw122.

Islam, M. T., E. Sturkell, P. LaFemina, H. Geirsson, F. Sigmundsson, and  H. Ólafsson (2016), Continuous subsidence in the Thingvellir rift graben, Iceland: Geodetic observations since 1967 compared to rheological models of plate spreading, J. Geophys. Res. Solid Earth, 121, doi:10.1002/2015JB012306.

2015

Freysteinn Sigmundsson, Andrew Hooper, Sigrún Hreinsdóttir, Kristín S. Vogfjörd, Benedikt Ófeigsson, Elías Rafn Heimisson, Stéphanie Dumont, Michelle Parks, Karsten Spaans, Gunnar B. Guðmundsson, Vincent Drouin, Thóra Árnadóttir, Kristín Jónsdóttir, Magnús T. Gudmundsson, Thórdís Högnadóttir, Hildur María Friðriksdóttir, Martin Hensch, Páll Einarsson, Eyjólfur Magnússon, Sergey Samsonov, Bryndís Brandsdóttir, Robert S. White, Thorbjörg Ágústsdóttir, Timothy Greenfield, Robert G. Green, Ásta Rut Hjartardóttir, Rikke Pedersen, Rick Bennett, Halldór Geirsson, Pete LaFemina, Helgi Björnsson, Finnur Pálsson, Erik Sturkell, Christopher J. Bean, Martin Möllhoff, Aoife Braiden, and Eva P.S. Eibl, Segmented lateral dyke growth in a rifting event at Bárðarbunga volcanic system, Iceland, Nature, 517, 191–195, doi:10.1038/nature14111, 2015 (Online 15 December 2014).

Heimisson, E. R., P. Einarsson, F. Sigmundsson, and B. Brandsdóttir (2015), Kilometer-scale Kaiser effect identified in Krafla  volcano, Iceland, Geophys. Res. Lett., 42, doi:10.1002/2015GL065680.

Heimisson, E. R., A. Hooper, and  F. Sigmundsson (2015), Forecasting the path of a laterally propagating dike, J. Geophys. Res. Solid Earth, 120, doi:10.1002/2015JB012402.

2014

Sigrún Hreinsdóttir, Freysteinn Sigmundsson, Matthew J. Roberts, Halldór Björnsson, Ronni Grapenthin, Pórdur Arason, Thóra Árnadóttir, Jósef Hólmjárn, Halldór Geirsson, Richard A. Bennett, Magnús T. Gudmundsson, Björn Oddsson, Benedikt G. Ófeigsson, Thierry Villemin, Thorsteinn Jónsson, Erik Sturkell, Ármann Höskuldsson, Gudrún Larsen, Thor Thordarson and Bergrún Arna Óladóttir, Volcanic plume height correlated with magma pressure change at Grímsvötn Volcano, Iceland, Nature Geoscience, 7, 214-218, doi: 10.1038/NGEO2044, 2014.

Auriac, A. F. Sigmundsson, A. Hooper, K. H. Spaans, H. Björnsson, F. Pálsson, V. Pinel and K. L. Feigl, InSAR observations and models of crustal deformation due to a glacial surge in Iceland, Geophys. J. Int., 198, 1329-1341, doi: 10.1093/gji/ggu205, 2014.

Ali, S. T., K. L. Feigl, B. B. Carr, T. Masterlark, and F. Sigmundsson, Geodetic measurements and numerical models of rifting in Northern Iceland for 1993–2008, Geophys. J. Int., doi: 10.1093/gji/ggt462, 2014.

Albino, F. and F. Sigmundsson, Stress transfer between magma bodies: Influence of intrusions prior to 2010 eruptions at Eyjafjallajökull volcano, Iceland, J. Geophys. Res., 119, 2964–2975, doi: 10.1002/2013JB010510, 2014.

2013

Auriac, A., K. H. Spaans, F. Sigmundsson, A. Hooper, P. Schmidt, and B. Lund, Iceland rising: Solid Earth response to ice retreat inferred from satellite radar interferometry and visocelastic modeling, J. Geophys. Res. Solid Earth, 118, doi:10.1002/jgrb.50082, 2013.

Elske de Zeeuw-van Dalfsen, Hazel Rymer, Erik Sturkell, Rikke Pedersen, Andy Hooper, Freysteinn Sigmundsson, Benedikt Ófeigsson, Geodetic data shed light on ongoing caldera subsidence at Askja, Iceland, Bulletin of Volcanology 75 (5), 1-13, doi: 10.1007/s00445-013-0709-2, 2013.

Erik Sturkell, Kristján Ágústsson, Alan T Linde, Selwyn I Sacks, Páll Einarsson, Freysteinn Sigmundsson, Halldór Geirsson, Rikke Pedersen, Peter C LaFemina, Halldór Ólafsson, New insights into volcanic activity from strain and other deformation data for the Hekla 2000 eruption, Journal of Volcanology and Geothermal Research 256, 78–86, 2013.

Freysteinn Sigmundsson, Fabien Albino, Peter Schmidt, Björn Lund, Virginie Pinel, Andrew Hooper, Carolina Pagli, Multiple effects of ice load changes and associated stress change on magmatic systems, In: Climate Forcing of Geological Hazards, Eds. Bill McGuire and Mark A. Maslin, Wiley-Blackwell, pp. 108-123, 2013.

Freysteinn Sigmundsson, Eyjafjallajökull Eruptions 2010, In: Encyclopedia of Natural Hazards, Ed. P. Bobrowsky, Springer, pp. 311-316, 2013.

Freysteinn Sigmundsson, Páll Einarsson og Sigurður Steinþórsson, Ísland og innri gerð jarðar, Í: Náttúruvá á Íslandi: Eldgos og jarðskjálftar, ritstj. Júlíus Sólnes, Freysteinn Sigmundsson og Bjarni Bessason, pp. 45-51, Viðlagatrygging Íslands og Háskólaútgáfan, 2013.

Freysteinn Sigmundsson og Kristján Sæmundsson, Ásýnd lands og aldur bergs, Í: Náttúruvá á Íslandi: Eldgos og jarðskjálftar, ritstj. Júlíus Sólnes, Freysteinn Sigmundsson og Bjarni Bessason, pp. 52-58, Viðlagatrygging Íslands og Háskólaútgáfan, 2013.

Freysteinn Sigmundsson, Sveinn P. Jakobsson, Guðrún Larsen, Páll Einarsson og Magnús Tumi Guðmundsson, Eldvirk svæði á Íslandi, Í: Náttúruvá á Íslandi: Eldgos og jarðskjálftar, ritstj. Júlíus Sólnes, Freysteinn Sigmundsson og Bjarni Bessason, pp. 58-61, Viðlagatrygging Íslands og Háskólaútgáfan, 2013.

Freysteinn Sigmundsson, Gunnar B. Guðmundsson og Páll Einarsson, Jarðskjálftasvæði Íslands, Í: Náttúruvá á Íslandi: Eldgos og jarðskjálftar, ritstj. Júlíus Sólnes, Freysteinn Sigmundsson og Bjarni Bessason, pp. 62-63, Viðlagatrygging Íslands og Háskólaútgáfan, 2013.

Freysteinn Sigmundsson, Magnús Tumi Guðmundsson og Sigurður Steinþórsson, Innri gerð eldfjalla, Í: Náttúruvá á Íslandi: Eldgos og jarðskjálftar, ritstj. Júlíus Sólnes, Freysteinn Sigmundsson og Bjarni Bessason, pp. 73-88, Viðlagatrygging Íslands og Háskólaútgáfan, 2013.

Guðrún Larsen, Freysteinn Sigmundsson og Andrew Dugmore, Eyjafjallajökull, Í: Náttúruvá á Íslandi: Eldgos og jarðskjálftar, ritstj. Júlíus Sólnes, Freysteinn Sigmundsson og Bjarni Bessason, pp. 291-297, Viðlagatrygging Íslands og Háskólaútgáfan, 2013.

Guðrún Larsen, Magnús Tumi Guðmundsson, Freysteinn Sigmundsson, Ármann Höskuldsson, Steinunn S. Jakobsdóttir, Björn Oddson, Eyjólfur Magnússon, Þórdís Högnadóttir, Þorvaldur Þórðarson og Halldór Björnsson, Eldur í Eyjafjallajökli 2010, Í: Náttúruvá á Íslandi: Eldgos og jarðskjálftar, ritstj. Júlíus Sólnes, Freysteinn Sigmundsson og Bjarni Bessason, pp. 299-311, Viðlagatrygging Íslands og Háskólaútgáfan, 2013.

Kristján Sæmundsson og Freysteinn Sigmundsson, Norðurgosbelti, Í: Náttúruvá á Íslandi: Eldgos og jarðskjálftar, ritstj. Júlíus Sólnes, Freysteinn Sigmundsson og Bjarni Bessason, pp. 319-357, Viðlagatrygging Íslands og Háskólaútgáfan, 2013.

2012

Andrew Hooper, Fred Prata and Freysteinn Sigmundsson, Remote sensing of volcano hazards and their precursors, Proceedings of the IEEE, 100(10), 2908-2930, 2012.

Halldór Geirsson, Peter LaFemina, Thóra Árnadóttir, Erik Sturkell, Freysteinn Sigmundsson, Matthew Travis, Peter Schmidt, Bjorn Lund, Sigrún Hreinsdóttir, Rick Bennett (2012), Volcano deformation at active plate boundaries: Deep magma accumulation at Hekla volcano and plate boundary deformation in south Iceland, J. Geophys. Res., 117, B11409, doi:10.1029/2012JB009400, 2012.

Tim J. Wright, Freysteinn Sigmundsson, Carolina Pagli, Manahloh Belachew, Ian J. Hamling, Bryndís Brandsdóttir, Derek Keir, Rikke Pedersen, Atalay Ayele, Cindy Ebinger, Páll Einarsson, Elias Lewi and Eric Calais (2012), Geophysical constraints on the dynamics of spreading centres from rifting episodes on land, Nature Geoscience, 5, 242–250 (2012) doi:10.1038/ngeo1428, 2012.

Elske de Zeeuw-van Dalfsen, Rikke Pedersen, Andrew Hooper, and Freysteinn Sigmundsson, Subsidence of Askja caldera 2000–2009: Modelling of deformation processes at an extensional plate boundary, constrained by time series InSAR analysis, Journal of Volcanology and Geothermal Research, 213–214, 72–82, 2012.

The 2010 Eyjafjallajökull eruption, Iceland, Report to International Civil Aviation Organization (ICAO), Steering and editorial committee: Sigrún Karlsdóttir, Ágúst Gunnar Gylfason, Ármann Höskuldsson, Bryndís Brandsdóttir, Evgenia Ilyinskaya, Magnús Tumi Gudmundsson, Þórdís Högnadóttir. Editor: Barði Þorkelsson, published by the Icelandic Meteorological Office, Institute of Earth Sciences, University of Iceland and the National Commissioner of the Icelandic Police, 2012. 209pp.

Karsten Spaans, Freysteinn Sigmundsson, and Sigrún Hreinsdottir, Crustal deformation in the Krafla, Gjástykki and Þeistareykir areas inferred from GPS and InSAR techniques, Institute of Earth Sciences, University of Iceland, Report 2011 and Landsvirkjun report LV-2012-028, 2012.

2011

Hooper, A., Ofeigsson, B, Freysteinn Sigmundsson, Lund, B., Einarsson, P., Geirsson, H and E. Sturkell, Increased capture of magma in the crust promoted by ice-cap retreat in Iceland, Nature Geoscience, 5, 783-786, doi: 10.1038/NGEO1269.

Eriksson, P.I., Morten S. Riishuus, Freysteinn Sigmundsson, Sten-Ake Elming, 2011. Magma flow directions inferred from field evidence and magnetic fabric studies of the Streitishvarf composite dike in east Iceland, Journal of Volcanology and Geothermal Research, p. 30-45, doi: 10.1016/j.jvolgeores.2011.05.009

Ofeigsson, B. G., A. Hooper, F. Sigmundsson, E. Sturkell, and R. Grapenthin (2011), Deep magma storage at Hekla volcano, Iceland, revealed by InSAR time series analysis , J. Geophys. Res. , 116 , B05401, doi:10.1029/2010JB007576.

2010

Geirsson, H., Thóra Árnadóttir, Sigrún Hreinsdóttir, Judicael Decriem, Peter C. LaFemina, Sigurjón Jónsson, Richard A. Bennett, Sabrina Metzger, Austin Holland, Erik Sturkell, Thierry Villemin, Christof Völksen, Freysteinn Sigmundsson, Páll Einarsson, Matthew J. Roberts and Hjörleifur Sveinbjörnsson 2010. Overview of results from continuous GPS observations in Iceland from 1995 to 2010. Jökull 60, 3-22.

Sigmundsson, F., S. Hreinsdóttir, A. Hooper, Th. Árnadóttir, R. Pedersen, M. J. Roberts, Níels Óskarsson, Amandine Auriac, Judicael Decriem, Páll Einarsson, Halldór Geirsson, Martin Hensch, Benedikt G. Ófeigsson, Erik Sturkell, Hjörleifur Sveinbjörnsson, and Kurt L, Feigl, Intrusion triggering of the 2010 Eyjafjallajökull explosive eruption, Nature, 468, 426-430, doi:10.1038/nature09558, 2010.

Sigmundsson, F., V. Pinel, B. Lund, F. Albino, C. Pagli, H. Geirsson, and E. Sturkell, Climate effects on volcanism: Influence on magmatic systems of loading and unloading from ice mass variations with examples from Iceland, Special issue on climate forcing of geological and geomorphological hazardsPhil. Trans. Roy. Soc. A, 368, 1-16, 2010.

Albino, F., V. Pinel, F. Sigmundsson, Influence of surface load variations on eruption likelihood: Application to two Icelandic subglacial volcanoes, Geophys. J. Int, 181, 1510-1524, doi: 10.1111/j.1365-246X.2010.04603.x, 2010.

Decriem, J., Th. Árnadóttir, A. Hooper, H.Geirsson, M. Keiding, B.G. Ófeigsson, F. Sigmundsson, S. Hreinsdóttir, P. LaFemina and R. Bennett, The 29 May 2008 earthquake doublet in SW Iceland, Geophys. J. Int., 181(2), 1128-1146, doi: 10.1111/j.1365-246X.2010.04565.x, 2010.

Grapenthin, R., B. G. Ófeigsson, F. Sigmundsson, E. Sturkell, and A. Hooper, Pressure sources versus surface loads: Analyzing volcano deformation signal composition with an application to Hekla volcano, Iceland, Geophys. Res. Lett., 37, L20310, doi:10.1029/2010GL044590, 2010.

Sigmundsson, F. and Á. Höskuldsson, Develop instruments to monitor volcanic ash fallout, Nature, 466, 28-28 (30 June 2010) doi:10.1038/466028b (Opinion – Correspondence), 2010.

2009

Pedersen, R., F. Sigmundsson and T. Masterlark, Rheologic controls on inter-rifting deformation of the Northern Volcanic Zone, Iceland, Earth and Planet. Sci. Letters, 281, 14-26, 2009.

2008

Pagli, C., and F. Sigmundsson, Will present day glacier retreat increase volcanic activity? Stress induced by recent glacier retreat and its effect on magmatism at the Vatnajökull ice cap, Iceland, Geophys. Res. Lett., 35, L09304, doi:10.1029/2008GL033510, 2008.

Sturkell, E., Einarsson, P., Roberts, M.J., Geirsson, H., Gudmundsson, M.T., Sigmundsson, F., Pinel, V., Gudmundsson, G.B., Olafsson, H., & Stefansson, R., Seismic and geodetic insights into magma accumulation at Katla subglacial volcano, Iceland: 1999 to 2005, Journal of Geophysical Research, 113, B03212, 2008.

Sturkell, E., Sigmundsson, F., Geirsson, H., Ólafsson, H., & Theodórsson, Th., Multiple volcano deformation sources in a post-rifting period: 1989-2005 behaviour of Krafla, Iceland constrained by levelling, tilt and GPS observations. Journal of Volcanology and Geothermal Research, 177 (2), 405-417, 2008.

Dubois, L., Feigl., K., Komatitsch, D., Árnadóttir, Th. and F. Sigmundsson, Three-dimensional mechanical models for the June 2000 earthquake sequence in the south Iceland seismic zone, Tectonophysics, 12-29, 2008.

Ólafur Ingólfsson, Olgeir Sigmarsson, Freysteinn Sigmundsson og Leifur A. Símonarson, 2008. The dynamic geology of Iceland, Jökull, 58, 1-2, 2008.

Gee, D. G., Brekke, H., Lahtinen, R., Sigmundsson, F., Sundquist, B., Thybo, H. and Weihed, P. 2008. Nordic Geoscience and the 33rd International Geological Congress: Introduction, Episodes, 31, 4-8.

Nadim, F., Pedersen, S.A.S, Schmidt-Thomé, P., Sigmundsson, F. and Engdahl, M., 2008. Natural hazards in Nordic countries, Episodes, 31, 176-184.

Sigmundsson, F. and Sæmundsson, K., 2008. Iceland: a window on North-Atlantic divergent plate tectonics and geologic processes, Episodes, 31, 92-97.

2007

Pinel, V., F. Sigmundsson, E. Sturkell, H. Geirsson, P. Einarsson, M.T. Gudmundsson, and Th. Högnadóttir, 2007. Discriminating volcano deformation due to magma movement and variable loads: Application to Katla subglacial volcano, Iceland, Geophys. J. Int., 169, 325-338.

Pagli, C., F. Sigmundsson, B. Lund, E. Sturkell, H. Geirsson, P. Einarsson, Th. Árnadóttir, and S. Hreinsdóttir, 2007. Glacio-isostatic deformation around the Vatnajökull ice cap, Iceland, induced by recent climate warming: GPS observations and Finite Element Modeling, J. Geophys. Res., 112, B08405.

Pagli, C., F. Sigmundsson, R. Pedersen, P. Einarsson, Th. Árnadóttir and K. L. Feigl, 2007. Crustal deformation associated with the 1996 Gjálp subglacial eruption, Iceland: InSAR studies in affected areas adjacent to the Vatnajökull ice cap, Earth and Planetary Science Letters, 259, 24-33.

Pedersen, R., F. Sigmundsson, Hooper, A. J. and Feigl, K. L., 2007. Extending the temporal coverage of Icelandic crustal deformation measurements through ENVISAT InSAR images, paper ESA SP-636, 2007, Proc. of the 2007 ENVISAT Symposium, Montreux, Switzerland, 23-27 April, 2007.

Pedersen, R., Freysteinn Sigmundsson and Páll Einarsson, 2007: Controlling factors on earthquake swarms associated with magmatic intrusions; Constraints from Iceland, Journal of Volcanology and Geothermal Research,162,73-80.

2006

Freysteinn Sigmundsson, Plate tectonics: Magma does the splits, Nature, 442, 251-252, 2006.

Sigmundsson, F. (2006), Iceland Geodynamics, Crustal Deformation and Divergent Plate Tectonics, Praxis Publishing – Springer Verlag, Chichester, UK, 209 pp.

Trota, A., Houlié, N., Briole, P., Gaspar, J.L., Sigmundsson, F. And K. L. Feigl, 2006. Deformation studies at Furnas and Sete Cidades Volcanoes (Sao Miguel Island, Azores). Velocities and further investigations, Geophys. J. Int., 166, 952-956.

Grapenthin, R., F. Sigmundsson, H. Geirsson , T. Arnadottir, V. Pinel, 2006. Icelandic rhythmics: Annual modulation of land elevation and plate spreading by snow load, Geophys. Res. Lett., 33, L24305.

Einarsson, P., F. Sigmundsson, E. Sturkell, Þ. Árnadóttir, R. Pedersen, C. Pagli, H. Geirsson. Geodynamic signals detected by geodetic methods in Iceland. In: C. Hirt (editor), Festschrift for Prof. G. Seeber, Wissenschaftliche Arbeiten der Fachrichtung Geodäsie und Geoinformatik der Universität Hannover Nr. 258, 39-57, 2006.

Geirsson, H., Arnadottir, Th., Völksen, C, Jiang, W, Sturkell, E, Villemin, T., Einarsson, P., Sigmundsson, F., Stefansson, R, Current plate movements across the Mid-Atlantic Ridge determined from 5 years of continuous GPS measurements in Icleand, J. Geophys. Res., 111, B09407, 2006.

Sturkell, E., F. Sigmundsson, and R. Slunga, 2006. 1983-2003 decaying rate of deflation at Askja caldera: Pressure decrease in an extensive magma plumbing system at a spreading plate boundary, Bull. Volc., 68, 727-735.

Eliasson, J., G. Larsen, M. T. Gudmundsson, and F. Sigmundsson, 2006. Probabilistic model for eruptions and associated flood events in the Katla caldera, Iceland, Computational Geosciences, 10, 179-200.

de Zeeuw-van Dalfsen, E., Rymer, H., Williams-Jones, G., Sturkell, E., & Sigmundsson, F. 2006. The integration of micro-gravity and geodetic data at Krafla Volcano, N Iceland. Bulletin of Volcanology, 68, 420-431.

Pagli C., Sigmundsson, F., Árnadóttir, T., Einarsson, P., Sturkell, E., 2006. Deflation of the Askja volcanic system: contraints on the deformation source from combined inversion of satellite radar interferograms and GPS measurements, Journal of Volcanology and Geothermal Research, 152, 97-108.

Pedersen, R., Sigmundsson, F. 2006. Temporal development of the 1999 intrusive episode in the Eyjafjallajökull volcano, Iceland, derived from InSAR images, Bull. Volc., 68, 377-393.

Sturkell, E., P. Einarsson, F. Sigmundsson, H. Geirsson, H. Olafsson, R. Pedersen, E. de Zeeuw-van Dalfsen, A. L. Linde, I. S. Sacks, and R. Stefansson, 2006. Volcano geodesy and magma dynamics in Iceland, J. Volc. Geotherm. Res., 150, 14-34.

2005

La Femina, P. C., Dixon, T. H., Malservisi, R., Árnadóttir, T., Sturkell, E., Sigmundsson, F., and Einarsson, P., Geodetic GPS measurements in South Iceland: Strain accumulation and portioning in a propagating ridge system, J. Geophys. Res., 110, B11405, 2005.

Einarsson, P., Sossalu, H., Sturkell, E., Sigmundsson, F., and Geirsson, H., Virkni í Kötlueldstöðinni og nágrenni hennar síðan 1999 og hugsanleg þróun atburðarásar, in: Guðmundsson, M. T. and Gylfason, Á. G. (eds.) Hættumat vegna eldgos og hlaupa frá vestanverðum Mýrdalsjökli and Eyjafjallajökli (in Icelandic), Ríkislögreglustjórinn, Háskólaútgáfan, 151-158, 2005.

Elíasson, J., Larsen, G., Guðmundsson, M. T. G., and F. Sigmundsson, Líkindi eldgosa, hlaupa og færslu eldvirkni milli svæða innan Kötluöskjunnar, in: Guðmundsson, M. T. and Gylfason, Á. G. (eds.) Hættumat vegna eldgos og hlaupa frá vestanverðum Mýrdalsjökli and Eyjafjallajökli (in Icelandic), Ríkislögreglustjórinn, Háskólaútgáfan, 135-150, 2005.

Elske van Dalfsen, Hazel Rymer, Freysteinn Sigmundsson and Erik Sturkell, Net gravity decrease at Askja volcano, Iceland: Constraints on processes responsible for continuous caldera deflation, 1988-2003, J. Volc. Geotherm. Res., 139, 227-239, 2005.

2004

Pedersen, R., F. Sigmundsson, InSAR based sill model links spatially offset areas of deformation and seismicity for the 1994 unrest episode at Eyjafjallajökull volcano, Iceland, Gephys. Res. Lett., 31, L14610, 2004.

de Zeeuw-van Dalfsen, E., R. Pedersen, F. Sigmundsson, and C. Pagli, Deep accumulation of magma near crust-mantle boundary at the Krafla volcanic system, Iceland: Evidence from satellite radar interferometry 1993-1999, Gephys. Res. Lett., 31, L13611, 2004.

Gudmundsson, M.T., F. Sigmundsson, H. Bjornsson, and Th. Hognadottir, The 1996 eruption at Gjálp, Vatnajökull ice cap: Course of events, efficiency of heat transfer, ice deformation and subglacial water pressure, Bull. Volc., 66, 46-65, 2004.

2003

Pedersen, R., S. Jónsson, Th. Árnadóttir, F. Sigmundsson, and K.L. Feigl, Fault slip distribution of two June 2000 Mw6.5 earthquakes in South Iceland estimated from joint inversion of InSAR and GPS measurements, Earth and Planet. Sci. Lett., vol. 213, p. 487-502, 2003.

Pagli, C., Pedersen, R., Sigmundsson, F. and Feigl, K., Triggered fault slip on June 17, 2000 on the Reykjanes Peninsula, SW-Iceland captured by radar interferometry, Geophys. Res. Lett., vol. 30 (6), 2003.

Sturkell, E., F. Sigmundsson, and P. Einarsson, 1994 and 1999 unrest and magma movements at Eyjafjallajökull and Katla volcanoes, Iceland, J. Geophys. Res., 108, 2369, 7, 2003.

Sturkell, E., P. Einarsson, F. Sigmundsson, H. Geirsson, H. Ólafsson, R. Ólafsdóttir, and G. Gunnarsson, Þrýstingur vex undir Kötlu, Náttúrufræðingurinn, 71 (3-4), 80-86, 2003.

Sturkell, E., and P. Einarsson, F. Sigmundsson, S. Hreinsdottir, and H. Geirsson, Deformation of Grímsvötn volcano, Iceland: 1998 eruption and subsequent inflation, Geophys. Res. Letters, 30, 1182, doi: 10.129/2002GL016460, 2003.

2002

Clifton, A., F. Sigmundsson, K. Feigl, G. Gunnarsson, Th. Arnadottir, Surface effects of faulting and deformation resulting from magma accumulation at the Hengill triple junction, SW Iceland, 1994-1998, J. Volc. Geotherm. Res., 115, 233-255, 2002.

Gudmundsson, S., J. M. Carstensen, and F. Sigmundsson, Unwrapping ground displacement signals in satellite radar interferograms with aid of GPS data and MRF regularisation, IEEE Transactions on Geoscience and Remote Sensing., 40, 1743-1754, 2002.

Gudmundsson, S., M. T. Gudmundsson, H. Bjornsson, F. Sigmundsson, Three-dimensional glacier surface motion maps at the Gjálp eruption site, Iceland, inferred from combining InSAR and other ice displacement data., Annals of Glaciology, 34, 315-322, 2002.

Gudmundsson, S., F. Sigmundsson, J. M. Carstensen, Three-dimensional surface motion maps estimated from combined InSAR and GPS data, J. Geophys. Res., 107, 2002.

2001

Hreinsdottir, S., P. Einarsson, and F. Sigmundsson, Crustal deformation at the oblique spreading Reykjanes Peninsula, SW-Iceland: GPS measurements from 1993 to 1998, J. Geophys. Res., 106, 13803-13816, 2001.

Pedersen, R., F. Sigmundsson, K.L. Feigl and Th. Árnadóttir, Coseismic interferograms of two Ms = 6.6 earthquakes in the South Iceland Seismic Zone, June, 2000, Geophys. Res. Lett., 28, 3341-3344, 2001.

2000

Feigl, K., J. Gasperi, F. Sigmundsson, and A. Rigo, Crustal deformation near Hengill volcano, Iceland 1993-1998: Coupling between volcanism and faulting inferred from elastic modelling of satellite radar interferograms, J. Geophys. Res., 105, 25655-25670, 2000.

Gudmundsson, M. T., G. Larsen, H. Bjornsson, and F. Sigmundsson, Comment: Subglacial eruptions and synthetic aperture radar images, EOS, Transaction of the American Geophysical Union, 81, 134-135 and 140, 2000.

Johnsson, D. J., F. Sigmundsson, and P. T. Delaney, Comment on “Volume of magma accumulation or withdrawal estimated from surface uplift or subsidence, with application to the 1960 collapse of Kilauea volcano” by P.T. Delaney and D.F. McTigue, Bull. Volc., 61, 491-493, 2000.

Massonnet, D. and F. Sigmundsson, Remote sensing of volcano deformation by radar interferometry from various satellites, In: Remote sensing of volcanoes, Am. Geophys. Union Geophysical Monograph vol. 116, 207-221, 2000.

Sturkell, E. and F. Sigmundsson, Continuous deflation of the Askja caldera Iceland, during the 1983-1998 non-eruptive period, J. Geophys. Res., 25671-25684, 2000.

1999

Alex, N., P. Einarsson, M. Heinert, W. Niemeier, F. Sigmundsson, S. Willgalis, GPS-Meßkampagne 1995 zur Bestimmung von Deformationen der Erdkruste in Südwestisland, Zeitschrift für Vermessungswesen, 124, 377-388, 1999.

Jonsson, S., M. M. Alves, and F. Sigmundsson, Low rates of deformation of the Furnas and Fogo volcanoes, Sao Miguel, Azores, observed with the Global Positioning System, 1993-1997, J. Volc. Geotherm. Res., 92, 83-94, 1999.

Sigmundsson, F., P. Durand, and D. Massonnet, Opening of an eruptive fissure and seaward displacement at Piton de la Fournaise volcano measured by RADARSAT satellite radar interferometry, Geophys. Res. Lett., 26, 533-536, 1999.

1998

Arnadottir, Th., F. Sigmundsson, and P. T. Delaney, Sources of crustal deformation associated with the Krafla, Iceland, eruption of September 1984, Geophys. Res. Lett., 25, 1043-1046, 1998.

Giannopoulos, G., E. Lagios and F. Sigmundsson, Global Positioning System (GPS) monitoring of Santorini volcano, The European Laboratory Volcanoes, Proceedings of the Second workshop held in Santorini, Greece, 2-4 May 1996, edited by R. Casale et al., pp. 271-279, European Commission, Brussels, 1998.

Rymer, H., J. Cassidy, C. A. Locke, and F. Sigmundsson, Post-eruptive gravity changes from 1990 to 1996 at Krafla volcano, Iceland, J. Volc. Geotherm. Res., 87, 141-149, 1998.

1997

Einarsson, P., B. Brandsdottir, M. T. Gudmundsson, H. Bjornsson, K. Gronvold, and F. Sigmundsson, Center of the Iceland hotspot experiences volcanic unrest, EOS, Transaction of the American Geophysical Union, 70, 369-375, 1997.

Gudmundsson, M. T., F. Sigmundsson, and H. Bjornsson, Ice-volcano interaction of the 1996 Gjalp subglacial eruption, Vatnajokull, Iceland, Nature, 389, 954-957, 1997.

Jonsson, S., P. Einarsson, and F. Sigmundsson, Extension across a divergent plate boundary, the Eastern Volcanic Rift Zone, south Iceland, 1967-1994, observed with GPS and electronic distance measurements, J. Geophys. Res., 102, 11913-11929, 1997.

Sigmundsson F., H. Vadon, and D. Massonnet, Readjustment of the Krafla spreading segment to crustal rifting measured by satellite radar interferometry, Geophys. Res. Lett., 24, 1843-1846, 1997.

Sigmundsson, F., P. Einarsson, S. Th. Rognvaldsson, G. R. Foulger, K. M. Hodgkinson, G. Thorbergsson, The 1994-1995 seismicity and deformation at the Hengill triple junction, Iceland: Triggering of earthquakes by minor magma injection in a zone of horizontal shear stress, J. Geophys. Res., 102, 15151-15161, 1997.

Vadon H., and F. Sigmundsson, Crustal deformation from 1992-1995 at the Mid-Atlantic Ridge, SW Iceland, mapped by satellite radar interferometry, Science, 275, 193-197, 1997.

Wolf, D., F. Barthelmes, and F. Sigmundsson, Predictions of deformation and gravity change caused by recent melting of the Vatnajokull ice cap, Iceland, in: Gravity, Geoid, and Marine Geodesy, edited by Segawa, J., Fujimoto, H., and S. Okubo, pp. 311-319, Springer-Verlag, Berlin, 1997.

Wolf, D., F. Barthelmes, and F. Sigmundsson, Predictions of deformation and gravity change caused by recent melting of the Vatnajokull ice cap, Iceland, in: Compt. Rend. J. Luxemb. Geodyn., 82, 36-42, 1997.

1996

Einarsson, P., F. Sigmundsson, M. A. Hofton, G. R. Foulger, and W. Jacoby, An experiment in glacio-isostasy near Vatnajokull, Iceland, 1991, Jokull, 44, 29-39, 1996.

Sigmundsson, F. and P. Einarsson, The south Iceland seismic zone: Crustal deformation from GPS measurements (in Icelandic), Natturufraedingurinn, 66, 37-46, 1996.

Sigmundson, F., Crustal deformation at volcanoes, in Proceedings of the Course: The Mitigation of Volcanic Hazards, European School of Climatology and Natural Hazards, held on Vulcano, Sicily, 12-18 June 1994, edited by F. Barberi and R. Casale, European Commission, ECSC-EC-EAEC, Brussels, pp. 237-257, 1996.

1995

Camitz, J., F. Sigmundsson, G. Foulger, C.-H. Jahn, C. Voelksen, and P. Einarsson, Plate boundary deformation and continuing deflation of the Askja volcano, North Iceland, determined with GPS, 1987-1993, Bull. Volc., 57, 136-145, 1995.

Sigmundsson, F., E. Tryggvason, M. M. Alves, J. L. Alves, K. Palsson, and H. Olafsson, Slow inflation of the Furnas volcano, Sao Miguel, Azores, suggested from initial leveling and Global Positioning System measurements, Geophys. Res. Lett., 22, 1681-1684, 1995.

Sigmundsson, F., P. Einarsson, R. Bilham, and E. Sturkell, Rift-transform kinematics in south Iceland: Deformation from Global Positioning System measurements, 1986-1992, J. Geophys. Res., 100, 6235-6248, 1995.

Sigmundsson, F., M. M. Alves, K. Palsson, J. L. Alvez, and E. Tryggvason, 1993 GPS measurements at the Furnas volcano: Comparison of L1 and L3 GPS data for volcano monitoring, in: The European Laboratory Volcanoes, Proceedings of the International workshop held in Catania Sicily, 18-21 June 1994, edited by F. Barberi, European Commission, ECSC-EC-EAEC, Brussels, pp. 1995.

1994

Sigmundsson, F., GPS monitoring of volcanic deformation in Iceland, In Cahiers du Centre Europeen de Geodynamique et de Seismologie, vol 8 (Proceedings of the workshop “New challenges for geodesy in volcanoes monitoring”, held in Walferdange, Luxembourg, 14-16 June, 1993), edited by P. Melchior, European Center for Geodynamics and Seismology, p. 79-98, 1994.

Sturkell, E., F. Sigmundsson, P. Einarsson, and R. Bilham, Strain accumulation 1986-1992 across the Reykjanes Peninsula plate boundary, Iceland, determined from GPS measurements, Geophys. Res. Lett., 21, 125-128, 1994.

1992

Sigmundsson, F., Tectonic implications of the 1989 Afar earthquake sequence, Geophys. Res. Lett., 19, 877-880, 1992.

Sigmundsson, F., and P. Einarsson, Glacio-isostatic crustal movements caused by historical volume change of the Vatnajokull ice cap, Iceland, Geophys. Res. Lett., 19, 2123-2126, 1992.

Sigmundsson, F., P. Einarsson and R. Bilham, Magma chamber deflation recorded by the Global Positioning System: The Hekla 1991 eruption, Geophys. Res. Lett., 19, 1483-1486, 1992.

1991

Sigmundsson, F., Post-glacial rebound and asthenosphere viscosity in Iceland, Geophys. Res. Lett., 18, 1131-1134, 1991.

- Aðrar greinar fræðilegs eðlis / Other papers

Sigmundsson, F. and Magnusson, M. T., Eruption of Grimsvotn volcano, November 1-6, 2004, Jokull, 54, 135-138, 2005.

Dubois, L., Feigl, K., Pedersen, R. And Sigmundsson, F., Regards sur l’Islande, ses déformations vues par interférométrie radar satellitaire, Découverte, Revue du Palais de la découvert, 322, November 2004, 30-39, 2004.

Sigmundsson, F., Pladespredning på Island – geodætiske målinger i 1900-tallet, Geologisk Nyt, 1, 3-5, 2000.

Sigmundsson, F., Umbrotin í Mýrdals- og Eyjafjallajökli – fyrirboðar um eldgos?, Fréttir, Slysavarnarfélagið Landsbjörg, 1, 17, 2000.

- Skýrslur / Reports

Freysteinn Sigmundsson, Páll Einarsson, Páll Halldórsson, Steinunn Jakobsdóttir, Kristín Vogfjörð, Ragnar Sigbjörnsson, Jónas Þór Snæbjörnsson, Earthquakes and faults in the Kárahnjúkar area – Review of hazards and recommended further studies, Landsvirkjun report LV-2005/027.

Sæmundsson, K., F. Sigmundsson, J. Skúlason, Álitsgerð um byggingarsvæði í Bjarnarflagi, Orkustofnun Report OS-2003/013, 2003.

Hreinsdottir, S. P. Einarsson, S. Jónsson, and F. Sigmundsson, GPS geodetic measurements around Bárðarbunga volcano, Central Iceland, in 1997, Rep. RH-13-98 Science Institute, University of Iceland, and Rep. 9802 Nord. Volcanol. Inst., 1998.

Jonsson, S., P. Einarsson, F. Sigmundsson, K. Palsson, and H. Olafsson, GPS experiments in the eastern volcanic zone, south Iceland, in 1994, Rep. RH-11-95 Science Institute, University of Iceland, and Rep. 9504 Nord. Volcanol. Inst., 1995.

Einarsson P., F. Sigmundsson, and I. Magnusson, A kinematic GPS-survey in Surtsey 1992, Rep. RH-23-94 Science Institute, University of Iceland, and Rep. 9403 Nord. Volcanol. Inst., 1994.

Sigmundsson, F., P. Einarsson, R. Bilham, and E. Sturkell, South-Iceland 1992 GPS-measurements: Summary and daily observation logs, Rep. 9201 Nord. Volcanol. Inst., 1992.

- Prófritgerðir / Theses

Sigmundsson, F., Crustal Deformation Studies in Sub-aerial Parts of the World Oceanic Rift System: Iceland and Afar, Ph. D. thesis, University of Colorado, Boulder, 112 pp., 1992.

Sigmundsson, F., Viscosity of the Earth beneath Iceland, comparison of model calculations with geological data (in Icelandic with English abstract), M.S. thesis, University of Iceland, 121 pp., University Press, University of Iceland, Reykjavik, 1990.2015

Freysteinn Sigmundsson, Andrew Hooper, Sigrún Hreinsdóttir, Kristín S. Vogfjörd, Benedikt Ófeigsson, Elías Rafn Heimisson, Stéphanie Dumont, Michelle Parks, Karsten Spaans, Gunnar B. Guðmundsson, Vincent Drouin, Thóra Árnadóttir, Kristín Jónsdóttir, Magnús T. Gudmundsson, Thórdís Högnadóttir, Hildur María Friðriksdóttir, Martin Hensch, Páll Einarsson, Eyjólfur Magnússon, Sergey Samsonov, Bryndís Brandsdóttir, Robert S. White, Thorbjörg Ágústsdóttir, Timothy Greenfield, Robert G. Green, Ásta Rut Hjartardóttir, Rikke Pedersen, Rick Bennett, Halldór Geirsson, Pete LaFemina, Helgi Björnsson, Finnur Pálsson, Erik Sturkell, Christopher J. Bean, Martin Möllhoff, Aoife Braiden, and Eva P.S. Eibl, Segmented lateral dyke growth in a rifting event at Bárðarbunga volcanic system, Iceland, Nature, 517, 191–195, doi:10.1038/nature14111, 2015 (Online 15 December 2014).