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A 1500-year record of North Atlantic storm flooding from lacustrine sediments, Shetland Islands (UK)

Severe storm flooding poses a major hazard to the coasts of north-western Europe. However, the long-term recurrence patterns of extreme coastal flooding and their governing factors are poorly understood. Therefore, high-resolution sedimentary records of past North Atlantic storm flooding are require...

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Hauptverfasser: Heß, Katharina (VerfasserIn) , Engel, Max (VerfasserIn) , Patel, Tasnim (VerfasserIn) , Vakhrameeva, Polina (VerfasserIn) , Koutsodendris, Andreas (VerfasserIn) , Klemt, Eckehard (VerfasserIn) , Hansteen, Thor (VerfasserIn) , Kempf, Philipp (VerfasserIn) , Dawson, Sue (VerfasserIn) , Schön, Isa (VerfasserIn) , Heyvaert, Vanessa M. A. (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 2024
In: Journal of quaternary science
Year: 2024, Jahrgang: 39, Heft: 1, Pages: 37-53
ISSN:1099-1417
DOI:10.1002/jqs.3568
Online-Zugang:Verlag, kostenfrei, Volltext: https://doi.org/10.1002/jqs.3568
Verlag, kostenfrei, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/jqs.3568
Volltext
Verfasserangaben:Katharina Hess, Max Engel, Tasnim Patel, Polina Vakhrameeva, Andreas Koutsodendris, Eckehard Klemt, Thor H. Hansteen, Philipp Kempf, Sue Dawson, Isa Schön and Vanessa M. A. Heyvaert
Beschreibung
Zusammenfassung:Severe storm flooding poses a major hazard to the coasts of north-western Europe. However, the long-term recurrence patterns of extreme coastal flooding and their governing factors are poorly understood. Therefore, high-resolution sedimentary records of past North Atlantic storm flooding are required. This multi-proxy study reconstructs storm-induced overwash processes from coastal lake sediments on the Shetland Islands using grain-size and geochemical data, and the re-analysis of historical data. The chronostratigraphy is based on Bayesian age-depth modelling using accelerator mass spectrometry 14C and 137Cs data. A high XRF-based Si/Ti ratio and the unimodal grain-size distribution link the sand layers to the beach and thus storm-induced overwash events. Periods with more frequent storm flooding occurred 980-1050, 1150-1300, 1450-1550, 1820-1900 and 1950-2000 ce, which is largely consistent with a positive North Atlantic Oscillation mode. The Little Ice Age (1400-1850 ce) shows a gap of major sand layers suggesting a southward shift of storm tracks and a seasonal variance with more storm floods in spring and autumn. Warmer phases shifted winter storm tracks towards the north-east Atlantic, indicating a possible trend for future storm-track changes and increased storm flooding in the northern North Sea region.
Beschreibung:Online veröffentlicht: 21. September 2023
Gesehen am 07.12.2023
Beschreibung:Online Resource
ISSN:1099-1417
DOI:10.1002/jqs.3568

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