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Fletta eftir efnisorði "Hraun"

Fletta eftir efnisorði "Hraun"

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  • Hauri, Erik H.; Maclennan, J.; McKenzie, D.; Gronvold, K.; Óskarsson, N.; Shimizu, N. (Geological Society of America, 2017-11-16)
    Primitive basalt melt inclusions from Borgarhraun, northern Iceland, display large correlated variations in CO2 and nonvolatile incompatible trace elements (ITEs) such as Nb, Th, Rb, and Ba. The average CO2/ITE ratios of the Borgarhraun melt inclusion ...
  • Pálsson, Gísli; Swanson, Heather Anne (Duke University Press, 2016)
    “Nature” and “social life” tended to be separated by Enlightenment thinkers, setting the stage for a long-standing tension between geology and social-cultural theory. Such a division suppressed the liveliness that humans have often attributed to material ...
  • Gíslason, Sigurður Reynir; Stefansdottir, Gerdur; Pfeffer, Melissa; barsotti, sara; Jóhannsson, Th.; Galeczka, Iwona Monika; Bali, Eniko; Sigmarsson, Olgeir; Stefansson, Andri; Keller, Nicole Simone; Sigurðsson, Á.; Bergsson, Bergur H.; Galle, B.; Jacobo, V.C; Arellano, S.; Aiuppa, A.; Jónasdóttir, Elín Björk; Eiríksdóttir, E.S.; Jakobsson, Sigurður; Guðfinnsson, Guðmundur Heiðar; Halldórsson, Sæmundur Ari; Gunnarsson, H.; Haddadi, B.; Jonsdottir, Ingibjorg; Thordarson, Thorvaldur; Riishuus, Morten; Högnadóttir, Thórdís; Dürig, Tobias; Pedersen, Gro; Höskuldsson, Ármann; Gudmundsson, Magnus Tumi (European Association of Geochemistry, 2015)
    The effusive six months long 2014-2015 Bárðarbunga eruption (31 August-27 February) was the largest in Iceland for more than 200 years, producing 1.6 ± 0.3 km3 of lava. The total SO2 emission was 11 ± 5 Mt, more than the amount emitted from Europe ...
  • Pedersen, Gro; Belart, Joaquín M. C.; Magnússon, Eyjólfur; Vilmundardóttir, Olga Kolbrún; Kizel, Fadi; Sigurmundsson, Friðþór Sófus; Gísladóttir, Guðrún; Benediktsson, Jon Atli (American Geophysical Union (AGU), 2018-02-22)
    Lava flow thicknesses, volumes, and effusion rates provide essential information for understanding the behavior of eruptions and their associated deformation signals. Preeruption and posteruption elevation models were generated from historical stereo ...
  • Pedersen, Gro; Montalvo, Jorge; Einarsson, Páll; Vilmundardóttir, Olga Kolbrún; Sigurmundsson, Friðþór Sófus; Belart, Joaquín M. C.; Hjartardottir, Asta Rut; Kizel, Fadi; Rustowicz, Rose; Falco, Nicola; Gísladóttir, Guðrún; Benediktsson, Jon Atli (Iceland Glaciological Society and Geoscience Society of IcelandJöklarannsóknafélags Íslands og Jarðfræðafélags Íslands, 2018)
    Hekla volcano is known to have erupted at least 23 times in historical time (last 1100 years); often producing mixed eruptions of tephra and lava. The lava flow volumes from the 20th century have amounted 80% to almost 100% of the entire erupted ...
  • Aufaristama, Muhammad; Höskuldsson, Ármann; Jonsdottir, Ingibjorg; Ólafsdóttir, Rósa (IOP Publishing, 2016-01-19)
    Iceland is well known for its volcanic activity due to its location on the spreading Mid Atlantic Ridge and one of the earth’s hot spot. In the past 1000 years there were about 200 eruptions occurring in Iceland, meaning volcanic eruptions occurred ...
  • Aufaristama, Muhammad; Höskuldsson, Ármann; Jónsdóttir, Ingibjörg; Ulfarsson, Magnus; Thordarson, Thorvaldur (MDPI AG, 2018-01-20)
    A new lava field was formed at Holuhraun in the Icelandic Highlands, north of Vatnajökull glacier, in 2014–2015. It was the largest effusive eruption in Iceland for 230 years, with an estimated lava bulk volume of ~1.44 km3 covering an area of ~84 km2. ...
  • Hamilton, Christopher W.; Fitch, Erin P.; Fagents, Sarah A.; Thordarson, Thorvaldur (Springer Nature, 2017-01)
    Volcanic rootless cones are the products of thermohydraulic explosions involving rapid heat transfer from active lava (fuel) to external sources of water (coolant). Rootless eruptions are attributed to molten fuel–coolant interactions (MFCIs), but ...
  • Caudron, Corentin; White, Robert S.; Green, Robert G.; Woods, Jennifer; Agustsdottir, Thorbjorg; Donaldson, Clare; Greenfield, Tim; Rivalta, Eleonora; Brandsdóttir, Bryndís (American Geophysical Union (AGU), 2018-01)
    Magma is transported in brittle rock through dikes and sills. This movement may be accompanied by the release of seismic energy that can be tracked from the Earth's surface. Locating dikes and deciphering their dynamics is therefore of prime importance ...