Sigmarsson Olgeir

Sigmarsson_Olgeir

Directeur de Recherche, CNRS
Équipe de Géochimie
Bureau: 1.42 - LMV Cezeaux
Téléphone: 04.73.34.67.20
Courriel : O.Sigmarsson@opgc.univ-bpclermont.fr

  • Thèmes de Recherche :

    • Thèmes : Origine, évolution et dynamique des magmas. Volcanologie nucléaire. Mobilité des radionucléides.
    • Objets : Volcans actifs et leur produits.
    • Outils : Déséquilibres radioactifs. Géochimie isotopique, éléments en trace et majeurs..

     

  • Responsabilités scientifiques et administratives :

    • Responsable de l’équipe de géochimie du LMV (depuis fin 2001)
    • Membre du comité scientifique de la Coordination de Recherches Volcanologiques, CNRS UMS 833
    • Encadrement de 2 DEA et 1 thèse, co-encadrement de 1 DEA et 1 thèse .

  • Conférences invitées et activités internationales :

    • Ecole Normal Supérieure de Lyon, France, 1999: Déséquilibre radioactif dans les magmas d’arcs.
    • University of Iceland, Reykjavik, 2000. Nuclear volcanology or short-lived nuclides and rates of magmatic processes.
    • Bern University, Switzerland, 2000. Constraints from U-series on timescales for magma transport and residence time
    • University of Geneva, Switzerland, 2001. Magma transfer rate beneath the Southern Volcanic Zone (Chile) and Piton de la Fournaise volcano.
    • Geological society of Iceland, 2002: How long does magma dwell beneath Icelandic volcanoes?
    • Nordic Volcanological Institut, 2002: Magma transfer rate beneath Chilian volcanoes and Piton de la Fournaise, Reunion Island.
    • Séjour de quatre mois a l’Institute Scientifique de l’Université d’Islande .

  • Publications LMV depuis 2010 :

    Rang A :

    • Gomez-Ulla A., Sigmarsson O., Gudfinnsson G.H. (2017). Trace element systematics of olivine from historical eruptions of Lanzarote, Canary Islands: constraints on mantle source and melting mode. Chemical Geology doi:10.1016/j.chemgeo.2016.11.021.
    • Carpentier M., Gannoun A.M., Pin C., Sigmarsson O. (2016). New Thorium Isotope Ratio Measurements in Silicate Reference Materials: A-THO, AGV-2, BCR-2, BE-N, BHVO-2 and BIR-1. Geostandards and Geoanalytical Research vol.40, p.239-256, 2, doi:10.1111/j.1751-908X.2015.00385.x.
    • Gauthier P.J., Sigmarsson O., Gouhier M., Haddadi B., Moune S. (2016). Elevated gas flux and trace metal degassing from the 2014–2015 fissure eruption at the Bárðarbunga volcanic system, Iceland. Journal of Geophysical Research - Solid Earth vol.121, p.1610–1630, doi:10.1002/2015JB012111.
    • Gudmundsson, M., Jónsdóttir K., Hooper A., Holohan E.P., Halldórsson S.A., Ófeigsson B.G., Cesca, S., Vogfjörd K.S., Sigmundsson F., Högnadóttir T., Einarsson P., Sigmarsson O., Jarosch A.H., Jónasson K., Magnússon E., Hreinsdóttir S., Bagnardi M., Parks M.M., Hjörleifsdóttir V., Pálsson F., Walter T.R., Gudfinnsson G.H., Dahm T., Roberts M.J., Hensch M., Belart J.M.C., Spaans K., Jakobsson S., Gudmundsson G.B., Fridriksdóttir H.M., Drouin V., Dürig T., Aðalgeirsdóttir G., Riishuus M.S., Pedersen G.B.M., Van Boeckel T., Oddsson B., Pfeffer M.A., Barsotti S., Bergsson B., Donovan A., Burton M.R., Aiuppa A. (2016). Gradual caldera collapse at Bárdarbunga volcano, Iceland, regulated by lateral magma outflow. Science vol.353, 6296, doi:10.1126/science.aaf8988.
    • Gíslason S.R,, Stefánsdóttir G,, Pfeffer M.A., Barsotti S., Jóhannsson Th,, Galeczka I., Bali E., Sigmarsson O., Stefánsson A., Keller N.S., Sigurdsson Á., Bergsson B., Galle B., Jacobo V.C., Arellano S., Aiuppa A., Jónasdóttir E.B., Eiríksdóttir E.S., Jakobsson S., Guðfinnsson G.H., Halldórsson S.A., Gunnarsson H., Haddadi B., Jónsdóttir I., Thordarson Th., Riishuus M., Högnadóttir Th., Dürig T., Pedersen G.D.M., Höskuldsson Á., Gudmundsson M.T. (2015). Environmental pressure from the 2014–15 eruption of Bárðarbunga volcano, Iceland. Geochemical Perspectives Letters vol.1, p.84-93, doi:10.7185/geochemlet. 1509.
    • Sigmarsson O., Condomines M., Gauthier P.J. (2015). Excess 210Po in 2010 Eyjafjallajökull tephra (Iceland): evidence for pre-eruptive gas accumulation. Earth and Planetary Science Letters vol.427, p.66-73, doi:10.1016/j.epsl.2015.06.054.
    • Sigmarsson O., Halldorsson S. A (2015). Delimiting Baroarbunga and Askja volcanic systems with Sr- and Nd-isotope ratios. Jökull vol.65, p.17-28.
    • Oladottir B.A., Larsen G., Sigmarsson O. (2014). Volume estimates of nine Katla tephra layers (similar to 1860 BC-870 AD). Jökull vol.63, p.23-40.
    • Sigmarsson O., Haddadi B., Carn S., Moune S., Gudnason J., Yang K., Clarisse L. (2013). The sulfur budget of the 2011 Grímsvötn eruption,Iceland: Geophysical Research Letters, v. 40, p. 1-6. doi:10.1002/2013GL057760.
    • Sigmarsson O., Laporte D., Carpentier M., Devouard B., Devidal J.L., Marti J. (2013). Formation of U-depleted rhyolite from a basanite at El Hierro, Canary Islands: Contributions to Mineralogy and Petrology, v. 165, p. 601-622. doi:10.1007/s00410-012-0826-5.
    • Bindeman I., Gurenko A., Carley T., Miller C., Martin E., Sigmarsson O. (2012). Silicic magma petrogenesis in Iceland by remelting of hydrothermally altered crust based on oxygen isotope diversity and disequilibria between zircon and magma with implications for MORB. Terra Nova 24, 227-232, 10.1111/j.1365-3121.2012.01058.x. .
    • Jakob K., Sigmarsson O. (2012). Geothermobarometry of the 2010 Eyjafjallajökull eruption: New constraints on Icelandic magma plumbing systems. Journal of Geophysical Research 117, BC00C09. doi:10.1029/2011JB008829.
    • Moune S., Sigmarsson O., Schiano P., Thordarson T., Keiding J.K. (2012). Melt inclusion constraints on the magma source of Eyjafjallajökull 2010 flank eruption. Journal of Geophysical Research - Solid Earth vol.117, p.B00C07, doi:10.1029/2011JB008718.
    • Oladottir B., Larsen G., Sigmarsson O. (2012). Deciphering eruption history and magmatic processes from tephra in Iceland. Jökull vol.62, p.1-20.
    • Martin E., Paquette J.L., Bosse V., Ruffet G., Tiepolo M., Sigmarsson O. (2011). Geodynamics of rift–plume interaction in Iceland as constrained by new 40Ar/39Ar and in situ U–Pb zircon ages: Earth and Planetary Science Letters, v. 311, p. 28-38. doi:10.1016/j.epsl.2011.08.036.
    • Oladottir B., Larsen G., Sigmarsson O. (2011). Holocene volcanic activity at Grímsvötn, Bárdarbunga and Kverkfjöll subglacial centres beneath Vatnajökull, Iceland: Bulletin of Volcanology, v. 73, p. 1187-1208. doi:10.1007/s00445-011-0461-4.
    • Oladottir B., Sigmarsson O., Larsen G., Devidal J.L. (2011). Provenance of basaltic tephra from Vatnajökull subglacial volcanoes, Iceland, as determined by major- and trace-element analyses: The Holocene, v. 21, p. 1037-1048. doi:10.1177/0959683611400456.
    • Sigmarsson O. (2011). Hvítserkur: fjall sem myndaðist í setskál. Glettingur, 55-56(21): p. 20-23. .
    • Sigmarsson O., Vlastélic I., Andreasen R., Bindeman I., Devidal J.L., Moune S., Keiding J.K., Larsen G., Höskuldsson A., Thordarson T. (2011). Remobilization of silicic intrusion by mafic magmas during the 2010 Eyjafjallajökull eruption: Solid Earth, v. 2, p. 271-281. Solid Earth vol.2, p.271-281.
    • Condomines M., Sigmarsson O., Gauthier P.J. (2010). A simple model of ^222 Rn accumulation leading to 210Pb excesses in volcanic rocks. Earth and Planetary Science Letters 293, 331-338. doi:10.1016/j.epsl.2010.02.048.
    • Martin E., Martin H., Sigmarsson O. (2010). Comment on “Continental geochemical signatures in dacites from Iceland and implications for models of early Archaean crust formation” by Willbold, M., Hegner, E. Stracke A., Rocholl A. Earth and Planatery Science Letters 293 : 220–222. doi:10.1016/j.epsl.2010.02.022.

    Rang B-C :

    • Gauthier P.J., Sigmarsson O., Moune S., Haddadi B., Gouhier M. (2015). Trace element degassing patterns and volcanic fluxes to the atmosphere during the 2014 Holuhraun eruption, Iceland. vol.17, p.EGU2015-10206-2, Geophysical Research Abstracts, EGU General Assembly 2015.
    • Gouhier M., Gauthier P.J., Haddadi B., Moune S., Sigmarsson O. (2015). Retrieval of lava and SO2 fluxes during long-lived effusive eruptions using MSG-SEVIRI: the case of Bárdarbunga 2014 activity. vol.17, p.EGU2015-9955, Geophysical Research Abstracts, EGU General Assembly 2015.
    • Haddadi B., Moune S., Sigmarsson O., Gauthier P.J., Gouhier M. (2015). Pre-eruptive volatile and erupted gas phase characterization of the 2014 basalt of Bárðarbunga volcanic system, Iceland. vol.17, p.EGU2015-9572, Geophysical Research Abstracts, EGU General Assembly 2015.
    • Haddadi B., Sigmarsson O., Devidal J.L. (2015). Determining intensive parameters through clinopyroxene-liquid equilibrium in Grímsvötn 2011 and Bárðarbunga 2014 basalts. vol.17, p.EGU2015-5791-2, EGU, Geophysical Research Abstracts.
    • Sigmarsson O., Haddadi B. (2015). Grímsvötn 2011 og stærð Grímsvatnagosa. Geological Society of Iceland, Spring Meeting.
    • Haddadi B., Carn S., Sigmarsson O. (2014). Sulphide globules and their impact on sulphur degassing budget: the case of Grímsvötn volcano, Iceland. Geophysical Research Abstracts, EGU2014-1652. .
    • Haddadi B., Jordan S., Sanchez L., Gurioli L., Harris A., Laporte D., Le Pennec J.L., Menand T., Roche O., Sigmarsson O. (2014). Eruptions exceptionnelles : le volcanisme basaltique explosif. Manifestation scientifique de restitution du CPER 2007-2014, Conseil régional d’Auvergne, 08-09 décembre 2014 (poster). .
    • Oladottir B., Larsen G., Sigmarsson O. (2014). Volume estimates of selected prehistoric basaltic tephra layers from Katla, Iceland. Geophysical Research Abstracts EGU2014-6195.
    • Sigmarsson O., Gauthier P.J., Condomines M. (2014). Duration of gas accumulation before the 2010 Eyjafjallajökull eruption constrained by 210Po-210Pb-226Ra disequilibria. Geophysical Research Abstracts, EGU2014-7987. .
    • Oladottir B., Larsen G., Sigmarsson O. (2013). Skyggnst í fortíð Grímsvatna, Bárðarbungu og Kverkfjalla. Náttúrufræðingurinn, 2013. 83(3-4): p. 112−125. .
    • Sigmarsson O. (2013). Birth of silicic magmas at Eyjafjallajökull volcano,Iceland. in Invited talk at Geological Soceiity of America Annual Meeting, Denver, Colorado, Oct. .
    • Sigmarsson O., Haddadi B. (2013). Grímsvötn 2011 og stærð Grímsvatnagosa. in JFÍ Spring Meeting, 2013 (Communication orale). .
    • Sigmarsson O. (2012). Mafic intrusions triggering eruptions in Iceland. EGU General Assembly, Vienna (Austria), 22-27 April 2012 (invited talk). .
    • Sigmarsson O., Gauthier P.J., Condomines M. (2012). Constraints from short-lived U-series nuclides on the magma dynamics leading to the 2010 Eyjafjallajökull eruption. Nordic Winter Meeting, Reykjavik, 2012. .
    • Sigmarsson O., Höskuldsson Á., Thordarson T., Larsen G. (2012). What caused the Grímsvötn 2011 eruption to penetrate into the stratosphere? Nordic Winter Meeting, Reykjavik, 2012. .
    • Sigmarsson O., Laporte D., Marti J., Devouard B., Cluzel N. (2012). Mafic intrusion remobilising silicic magma under El Hierro, Canary Islands. Geophysical Research Abstracts, Vol. 14, EGU2012-12251. EGU General Assembly, Vienna (Austria), 22-27 April 2012. .
    • Sigmarsson O., Moune S., Schiano P. (2012). The mantle source of Eyjafjallajökull magma. Nordic Winter Meeting, Reykjavik, 2012. .
    • Keiding J.K., Sigmarsson O. (2011). Geothermobarometry of the 2010 Eyjafjallajökull eruption: Geophysical Research Abstracts Vol. 13, EGU2011-9855, EGU General Assembly 2011. .
    • Moune S., Sigmarsson O., Schiano P., Thordarson T. (2011). Volatile characterisations of Eyjafjallajokull volcano (Iceland): from the magmatic source at depth to the surface: Geophysical Research Abstracts Vol. 13, EGU2011-4184, EGU General Assembly 2011. .
    • Oladóttir B.A., Larsen G., Sigmarsson O. (2011). The neighbours of the Eyjafjallajökull volcano: Katla, Grímsvötn and Bárðarbunga: Geophysical Research Abstracts Vol. 13, EGU2011-3522, EGU General Assembly 2011. .
    • Sigmarsson O. (2011). Eldfell og Eyjafjallajökull: hraði kvikuþróunnar undir misþroskuðum alkalískum eldfjöllum: JFÍ Spring Meeting, 2011. .
    • Sigmarsson O. (2011). Hvítserkur: fjall sem myndaðist í setskál: Glettingur, v. 55-56, p. 20-23. .
    • Sigmarsson O. (2011). The dynamic magma mixing during the 2010 eruption of Eyjafjallajökull, Iceland: Geophysical Research Abstracts, Vol. 13, EGU2011-12589, EGU General Assembly 2011. .
    • Sigmarsson O., Condomines M. (2011). Time scales of magma mingling during the 2010 eruption of Eyjafjallajökull, Iceland: Geophysical Research Abstracts, Vol. 13, EGU2011-12622, EGU General Assembly 2011. .
    • Thordarson T., Hayward C., Moune S., Hartley M., Sigmarsson O., Höskuldsson A., Guðmundsson M.T., Sigmundsson F. (2011). The 20 March - 12 April 2010 Fimmvörðuháls eruption, Eyjafjallajöull volcano, Iceland: Volatile contents and magma degassing: EGU 2011, Vienna. .

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