Major coastal impact induced by a 1000-year storm event

Mikkel Fruergaard, Thorbjørn J. Andersen, Peter N. Johannessen, Lars H. Nielsen, Morten Pejrup

    Publikation: Bidrag til tidsskriftArtikelForskningpeer review

    49 Citationer (Scopus)

    Abstrakt

    Extreme storms and storm surges may induce major changes along sandy barrier coastlines, potentially causing substantial environmental and economic damage. We show that the most destructive storm (the 1634 AD storm) documented for the northern Wadden Sea within the last thousand years both caused permanent barrier breaching and initiated accumulation of up to several metres of marine sand. An aggradational storm shoal and a prograding shoreface sand unit having thicknesses of up to 8 m and 5 m respectively were deposited as a result of the storm and during the subsequent 30 to 40 years long healing phase, on the eroded shoreface. Our results demonstrate that millennial-scale storms can induce large-scale and long-term changes on barrier coastlines and shorefaces, and that coastal changes assumed to take place over centuries or even millennia may occur in association with and be triggered by a single extreme storm event.

    OriginalsprogEngelsk
    Artikelnummer1051
    Antal sider7
    TidsskriftScientific Reports
    Vol/bind3
    DOI
    StatusUdgivet - 23 jan. 2013

    Emneord

    • Holocæn udvikling

    Programområde

    • Programområde 5: Natur og klima

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