Woodroffe, Sarah A., Hill, Jon orcid.org/0000-0003-1340-4373, Bustamante-Fernandez, Emmanuel et al. (4 more authors) (2023) On the varied impact of the Storegga tsunami in northwest Scotland. Journal of Quaternary Science. ISSN 0267-8179
Abstract
In this paper we evaluate new data and those from previous studies in northwest Scotland and perform a modelling study to test the hypothesis that the Storegga tsunami (submarine slope failure off the continental shelf of Central Norway dated to 8120–8175 bp) impacted this region. The model used is a 2D non-linear, non-conservative, Shallow Water Equation solver incorporating inundation and realistic glacial isostatic adjustment-corrected palaeobathymetry, with horizontal resolution down to 30 m at sites of interest. The 15 coastal study sites analysed range from south of the Isle of Skye to Assynt. We predict run-up between 2.7 and 9.4 m above contemporaneous mean tide level across the region, with the highest on the west coast of the Outer Hebrides, the east coast of Skye and at the head of long sea lochs east of Skye. We re-evaluate evidence from previously studied open coastal marshes, isolation basins and barrier locations for the tsunami and suggest that in many locations the Storegga tsunami is the most likely cause of erosion, deposition and changes in microfossil assemblages in the early Holocene. The predictions of wave height and inundation produced by the tsunami modelling fit well with the range of available field evidence in the region. We predict significant wave heights at least as far south as Mull on the west coast.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | Publisher Copyright: © 2023 The Authors Journal of Quaternary Science Published by John Wiley & Sons Ltd. |
Keywords: | coastal basins,microfossils,NW Scotland,Storegga,tsunami |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Environment and Geography (York) |
Depositing User: | Pure (York) |
Date Deposited: | 18 Oct 2023 08:30 |
Last Modified: | 05 Jan 2025 00:38 |
Published Version: | https://doi.org/10.1002/jqs.3539 |
Status: | Published online |
Refereed: | Yes |
Identification Number: | 10.1002/jqs.3539 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:204351 |
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Description: J Quaternary Science - 2023 - Woodroffe - On the varied impact of the Storegga tsunami in northwest Scotland
Licence: CC-BY 2.5