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    Multi-Proxy Characterisation of the Storegga Tsunami and Its Impact on the Early Holocene Landscapes of the Southern North Sea

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    Publication date
    2020-07-15
    Author
    Gaffney, Vincent L.
    Fitch, Simon
    Bates, M.
    Ware, R.L.
    Kinnaird, T.
    Gearey, B.
    Hill, T.
    Telford, Richard
    Batt, Catherine M.
    Stern, Ben
    Whittaker, J.
    Davies, S.
    Ben Sharada, Mohammed
    Everett, R.
    Cribdon, R.
    Kistler, L.
    Harris, Sam
    Kearney, K.
    Walker, James
    Muru, Merle
    Hamilton, D.
    Law, M.
    Finlay, A.
    Bates, R.
    Allaby, R.G.
    Show allShow less
    Keyword
    Seismic
    Tsunami
    Doggerland
    Palaeoenvironment
    Palaeolandscape
    Sedimentary ancient DNA
    Geochemistry
    Geomorphology
    Mesolithic
    Storegga
    North Sea
    Show allShow less
    Rights
    (c) 2020 The Authors. This is an Open Access article distributed under the Creative Commons CC-BY license (https://creativecommons.org/licenses/by/4.0/)
    Peer-Reviewed
    Yes
    
    Metadata
    Show full item record
    Abstract
    Doggerland was a landmass occupying an area currently covered by the North Sea until marine inundation took place during the mid-Holocene, ultimately separating the British landmass from the rest of Europe. The Storegga Event, which triggered a tsunami reflected in sediment deposits in the northern North Sea, northeast coastlines of the British Isles and across the North Atlantic, was a major event during this transgressive phase. The spatial extent of the Storegga tsunami however remains unconfirmed as, to date, no direct evidence for the event has been recovered from the southern North Sea. We present evidence of a tsunami deposit in the southern North Sea at the head of a palaeo-river system that has been identified using seismic survey. The evidence, based on lithostratigraphy, geochemical signatures, macro and microfossils and sedimentary ancient DNA (sedaDNA), supported by optical stimulated luminescence (OSL) and radiocarbon dating, suggests that these deposits were a result of the tsunami. Seismic identification of this stratum and analysis of adjacent cores showed diminished traces of the tsunami which was largely removed by subsequent erosional processes. Our results confirm previous modelling of the impact of the tsunami within this area of the southern North Sea, and also indicate that these effects were temporary, localized, and mitigated by the dense woodland and topography of the area. We conclude that clear physical remnants of the wave in these areas are likely to be restricted to now buried, palaeo-inland basins and incised river valley systems.
    URI
    http://hdl.handle.net/10454/17955
    Version
    Published version
    Citation
    Gaffney VL, Fitch S, Bates M et al (2020) Multi-Proxy Characterisation of the Storegga Tsunami and Its Impact on the Early Holocene Landscapes of the Southern North Sea. Geosciences. 10(7): 270.
    Link to publisher’s version
    https://doi.org/10.3390/geosciences10070270
    Type
    Article
    Collections
    Life Sciences Publications

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