B
Bergrún Arna Óladóttir
Researcher at University of Iceland
Publications - 19
Citations - 512
Bergrún Arna Óladóttir is an academic researcher from University of Iceland. The author has contributed to research in topics: Tephra & Volcano. The author has an hindex of 8, co-authored 17 publications receiving 453 citations. Previous affiliations of Bergrún Arna Óladóttir include Icelandic Meteorological Office & Blaise Pascal University.
Papers
More filters
Journal ArticleDOI
Katla volcano, Iceland: magma composition, dynamics and eruption frequency as recorded by Holocene tephra layers
Bergrún Arna Óladóttir,Bergrún Arna Óladóttir,Olgeir Sigmarsson,Olgeir Sigmarsson,Gudrún Larsen,Thor Thordarson,Thor Thordarson +6 more
TL;DR: In this article, a study of the tephra stratigraphy from a composite soil section to the east of the volcano has been undertaken with emphasis on the prehistoric deposits, and the age of individual Katla layers was calculated using soil accumulation rates (SAR) derived from soil thicknesses between 14C-dated marker tephras layers.
Journal ArticleDOI
Holocene volcanic activity at Grímsvötn, Bárdarbunga and Kverkfjöll subglacial centres beneath Vatnajökull, Iceland
Bergrún Arna Óladóttir,Bergrún Arna Óladóttir,Gudrún Larsen,Olgeir Sigmarsson,Olgeir Sigmarsson +4 more
TL;DR: In this paper, the authors analyzed tephra from soil profiles around the Vatnajokull ice-cap, which extend back to ~7.6 ka, to estimate the eruption history of three partly subglacial volcanic systems, Grimsvotn, Bardarbunga and Kverkfjoll.
Journal ArticleDOI
Volcanic plume height correlated with magma-pressure change at Grímsvötn Volcano, Iceland
Sigrún Hreinsdóttir,Sigrún Hreinsdóttir,Freysteinn Sigmundsson,Matthew J. Roberts,Halldór Björnsson,Ronni Grapenthin,Ronni Grapenthin,Pordur Arason,Thóra Árnadóttir,Jósef Hólmjárn,Halldór Geirsson,Richard A. Bennett,Magnús T. Gudmundsson,Björn Oddsson,Benedikt G. Ófeigsson,Benedikt G. Ófeigsson,Thierry Villemin,Thorsteinn Jónsson,Erik Sturkell,Ármann Höskuldsson,Gudrún Larsen,Thor Thordarson,Bergrún Arna Óladóttir +22 more
TL;DR: The 2011 eruption of a 20km-high volcanic plume from Grimsvotn Volcano, Iceland, led to the closure of northern European airspace as mentioned in this paper, with a delay of an hour, implying that volcanic-plume behaviour can be predicted before eruption onset.
Journal ArticleDOI
Provenance of basaltic tephra from Vatnajökull subglacial volcanoes, Iceland, as determined by major- and trace-element analyses:
TL;DR: In this paper, 921 samples from soil profiles around the Vatnajokull ice-cap were analyzed for major-element concentrations by electron probe microanalysis, and the results fall into three distinctive compositional grou...