Insights into Holocene relative sea-level changes in the southern North Sea using an improved microfauna-based transfer function
Scheder, J.; Bungenstock, F.; Haynert, K.; Pint, A.; Schlütz, F.; Frenzel, P.; Wehrmann, A.; Brückner, H.; Engel, M. (2022). Insights into Holocene relative sea-level changes in the southern North Sea using an improved microfauna-based transfer function. J. Quaternary Sci. 37(1): 71-85. https://dx.doi.org/10.1002/jqs.3380
In: Journal of Quaternary Science. John Wiley & Sons: Harlow, Essex. ISSN 0267-8179; e-ISSN 1099-1417, meer
In light of global warming and rising relative sea level (RSL), detailed reconstructions of RSL histories and their controlling processes are essential in order to manage coastal-protection challenges. This study contributes to unravelling Holocene RSL change on the East Frisian North Sea coast in high resolution and with a new approach for the German Bight. For the first time, a transfer function (vertical error: 29.7 cm ≙ ~11% of the mean tidal range) for RSL change based on a combined training set of benthic foraminifers and ostracods from the back-barrier tidal basin of Spiekeroog is applied to the Holocene record of the back-barrier tidal basin of Norderney. The resulting RSL curve for the Norderney tidal basin is corrected for decompaction and shows a deceleration in RSL rise between 6000 and 5000 cal bp. The smallest possible error envelope (~1 m) results from the good suitability of salt-marsh layers between 5000 and 4000 cal bp. The RSL curve provides an approach towards the closure of the common data gap of peat-based curves for the southern North Sea related to a lack of basal peats in the youngest age range, and verifies regional differences in glacial isostatic adjustment.
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