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Estimating the frequency of volcanic ash clouds over northern Europe
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2017 (English)In: Earth and Planetary Science Letters, ISSN 0012-821X, E-ISSN 1385-013X, Vol. 460, no Supplement C, p. 41-49Article in journal (Refereed) Published
Abstract [en]

Abstract Fine ash produced during explosive volcanic eruptions can be dispersed over a vast area, where it poses a threat to aviation, human health and infrastructure. Here, we focus on northern Europe, which lies in the principal transport direction for volcanic ash from Iceland, one of the most active volcanic regions in the world. We interrogate existing and newly produced geological and written records of past ash fallout over northern Europe in the last 1000 years and estimate the mean return (repose) interval of a volcanic ash cloud over the region to be 44±7 years. We compare tephra records from mainland northern Europe, Great Britain, Ireland and the Faroe Islands, with records of proximal Icelandic volcanism and suggest that an Icelandic eruption with a Volcanic Explosivity Index rating (VEI) ≥ 4 and a silicic magma composition presents the greatest risk of producing volcanic ash that can reach northern Europe. None of the ash clouds in the European record which have a known source eruption are linked to a source eruption with VEI < 4. Our results suggest that ash clouds are more common over northern Europe than previously proposed and indicate the continued threat of ash deposition across northern Europe from eruptions of both Icelandic and North American volcanoes.

Place, publisher, year, edition, pages
2017. Vol. 460, no Supplement C, p. 41-49
Keyword [en]
cryptotephra, reoccurrence, survival analysis, hazards, eruptions, Iceland
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:polar:diva-3893DOI: 10.1016/j.epsl.2016.11.054OAI: oai:DiVA.org:polar-3893DiVA: diva2:1164975
Available from: 2017-12-12 Created: 2017-12-12 Last updated: 2017-12-12

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf