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Segmented lateral dyke growth in a rifting event at Bárðarbunga volcanic system, Iceland.

Nature

Sigmundsson F, Hooper A, Hreinsdóttir S, Vogfjörd KS, Ófeigsson BG, Heimisson ER, Dumont S, Parks M, Spaans K, Gudmundsson GB, Drouin V, Árnadóttir T, Jónsdóttir K, Gudmundsson MT, Högnadóttir T, Fridriksdóttir HM, Hensch M, Einarsson P, Magnússon E, Samsonov S, Brandsdóttir B, White RS, Ágústsdóttir T, Greenfield T, Green RG, Hjartardóttir ÁR, Pedersen R, Bennett RA, Geirsson H, La Femina PC, Björnsson H, Pálsson F, Sturkell E, Bean CJ, Möllhoff M, Braiden AK, Eibl EP.
PMID: 25517098
Nature. 2015 Jan 08;517(7533):191-5. doi: 10.1038/nature14111. Epub 2014 Dec 15.

Crust at many divergent plate boundaries forms primarily by the injection of vertical sheet-like dykes, some tens of kilometres long. Previous models of rifting events indicate either lateral dyke growth away from a feeding source, with propagation rates decreasing...

Gradual caldera collapse at Bárdarbunga volcano, Iceland, regulated by lateral magma outflow.

Science (New York, N.Y.)

Gudmundsson MT, Jónsdóttir K, Hooper A, Holohan EP, Halldórsson SA, Ófeigsson BG, Cesca S, Vogfjörd KS, Sigmundsson F, Högnadóttir T, Einarsson P, Sigmarsson O, Jarosch AH, Jónasson K, Magnússon E, Hreinsdóttir S, Bagnardi M, Parks MM, Hjörleifsdóttir V, Pálsson F, Walter TR, Schöpfer MP, Heimann S, Reynolds HI, Dumont S, Bali E, Gudfinnsson GH, Dahm T, Roberts MJ, Hensch M, Belart JM, Spaans K, Jakobsson S, Gudmundsson GB, Fridriksdóttir HM, Drouin V, Dürig T, Aðalgeirsdóttir G, Riishuus MS, Pedersen GB, van Boeckel T, Oddsson B, Pfeffer MA, Barsotti S, Bergsson B, Donovan A, Burton MR, Aiuppa A.
PMID: 27418515
Science. 2016 Jul 15;353(6296):aaf8988. doi: 10.1126/science.aaf8988.

Large volcanic eruptions on Earth commonly occur with a collapse of the roof of a crustal magma reservoir, forming a caldera. Only a few such collapses occur per century, and the lack of detailed observations has obscured insight into...

Unexpected large eruptions from buoyant magma bodies within viscoelastic crust.

Nature communications

Sigmundsson F, Pinel V, Grapenthin R, Hooper A, Halldórsson SA, Einarsson P, Ófeigsson BG, Heimisson ER, Jónsdóttir K, Gudmundsson MT, Vogfjörd K, Parks M, Li S, Drouin V, Geirsson H, Dumont S, Fridriksdottir HM, Gudmundsson GB, Wright TJ, Yamasaki T.
PMID: 32415105
Nat Commun. 2020 May 15;11(1):2403. doi: 10.1038/s41467-020-16054-6.

Large volume effusive eruptions with relatively minor observed precursory signals are at odds with widely used models to interpret volcano deformation. Here we propose a new modelling framework that resolves this discrepancy by accounting for magma buoyancy, viscoelastic crustal...

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