Opin vísindi

Hekla 1947, 1845, 1510 and 1158 tephra in Finland: challenges of tracing tephra from moderate eruptions

Show simple item record

dc.contributor Háskóli Íslands
dc.contributor University of Iceland
dc.contributor.author Kalliokoski, Maarit
dc.contributor.author Guðmundsdóttir, Esther Ruth
dc.contributor.author Wastegård, Stefan
dc.date.accessioned 2020-12-07T14:19:14Z
dc.date.available 2020-12-07T14:19:14Z
dc.date.issued 2020-07-04
dc.identifier.citation Kalliokoski, M., Guðmundsdóttir, E.R., Wastegård, S., 2020. Hekla 1947, 1845, 1510 and 1158 tephra in Finland: challenges of tracing tephra from moderate eruptions. Journal of Quaternary Science. doi:10.1002/jqs.3228
dc.identifier.issn 0267-8179
dc.identifier.issn 1099-1417 (eISSN)
dc.identifier.uri https://hdl.handle.net/20.500.11815/2276
dc.description Publisher's version (útgefin grein)
dc.description.abstract Several cryptotephra layers that originate from Icelandic volcanic eruptions with a volcanic explosivity index (VEI) of ≤ 4 and tephra volumes of < 1 km3 have previously been identified in Northern Europe, albeit within a restricted geographical area. One of these is the Hekla 1947 tephra that formed a visible fall-out in southern Finland. We searched for the Hekla 1947 tephra from peat archives within the previously inferred fall-out zone but found no evidence of its presence. Instead, we report the first identification of Hekla 1845 and Hekla 1510 cryptotephra layers outside of Iceland, the Faroe Islands, Ireland and the UK. Additionally, Hekla 1158 tephra was found in Finland for the first time. Our results confirm that Icelandic eruptions of moderate size can form cryptotephra deposits that are extensive enough to be used in inter-regional correlations of environmental archives and carry a great potential for refining regional tephrochronological frameworks. Our results also reveal that Icelandic tephra has been dispersed into Finnish airspace at least seven times during the past millennium and in addition to a direct eastward route the ash clouds can travel either via a northerly or a southerly transport pathway.
dc.description.sponsorship We thank Sami Jokinen for assistance with field work in Finland and Dr Maria Janebo for field assistance in Iceland. Professor Siwan Davies and Dr Gwydion Jones at Swansea University are thanked for their help with micromanipulator work. We are grateful to Dr Chris Hayward for support with EPMA at the University of Edinburgh. Financial support for field work and EPMA was received from the Finnish Cultural Foundation, Varsinais-Suomi Regional Fund and Suomen Tiedeseura. Maarit Kalliokoski acknowledges funding from the Nordic Volcanological Centre at the University of Iceland and the Doctoral Programme in Biology, Geography and Geology at the University of Turku.
dc.format.extent 803-816
dc.language.iso en
dc.publisher Wiley
dc.relation.ispartofseries Journal of Quaternary Science;35(6)
dc.rights info:eu-repo/semantics/openAccess
dc.subject Cryptotephra
dc.subject Finnish tephrochronology
dc.subject Hekla 1947
dc.subject Hekla volcano
dc.subject Icelandic moderate eruptions
dc.subject Heklueldar
dc.subject Gjóska
dc.title Hekla 1947, 1845, 1510 and 1158 tephra in Finland: challenges of tracing tephra from moderate eruptions
dc.type info:eu-repo/semantics/article
dcterms.license This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
dc.description.version Peer Reviewed
dc.identifier.journal Journal of Quaternary Science
dc.identifier.doi 10.1002/jqs.3228
dc.relation.url https://onlinelibrary.wiley.com/doi/full/10.1002/jqs.3228
dc.contributor.department Jarðvísindastofnun (HÍ)
dc.contributor.department Institute of Earth Sciences (UI)
dc.contributor.school Verkfræði- og náttúruvísindasvið (HÍ)
dc.contributor.school School of Engineering and Natural Sciences (UI)

Files in this item

This item appears in the following Collection(s)

Show simple item record