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  The collapse of Bardarbunga caldera, Iceland

Riel, B., Milillo, P., Simons, M., Lundgren, P., Kanamori, H., Samsonov, S. (2015): The collapse of Bardarbunga caldera, Iceland. - Geophysical Journal International, 202, 1, 446-453.
https://doi.org/10.1093/gji/ggv157

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_3222898 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_3222898_1
Genre: Journal Article

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 Creators:
Riel, B.1, 2, Author
Milillo, P.1, 2, Author
Simons, M.1, 2, Author
Lundgren, P.1, 2, Author
Kanamori, H.1, 2, Author
Samsonov, S.1, 2, Author
Affiliations:
1External Organizations, ou_persistent22              
2GEOFON, Deutsches GeoForschungsZentrum, Potsdam, , ou_2634888              

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Free keywords: Satellite geodesy, Radar interferometry, Magma chamber processes, Calderas, Remote sensing of volcanoes
 Abstract: Lying below Vatnajökull ice cap in Iceland, Bárðarbunga stratovolcano began experiencing wholesale caldera collapse in 2014 August 16, one of the largest such events recorded in the modern instrumental era. Simultaneous with this collapse is the initiation of a plate boundary rifting episode north of the caldera. Observations using the international constellation of radar satellites indicate rapid 50 cm d−1 subsidence of the glacier surface overlying the collapsing caldera and metre-scale crustal deformation in the active rift zone. Anomalous earthquakes around the rim of the caldera with highly nondouble-couple focal mechanisms provide a mechanical link to the dynamics of the collapsing magma chamber. A model of the collapse consistent with available geodetic and seismic observations suggests that the majority of the observed subsidence occurs aseismically via a deflating sill-like magma chamber.

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Language(s): eng - English
 Dates: 2015
 Publication Status: Finally published
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1093/gji/ggv157
 Degree: -

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Title: Geophysical Journal International
Source Genre: Journal, SCI, Scopus, ab 2024 OA-Gold
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Pages: - Volume / Issue: 202 (1) Sequence Number: - Start / End Page: 446 - 453 Identifier: CoNE: https://gfzpublic.gfz-potsdam.de/cone/journals/resource/journals180