Abstract
Abstract
Collecting sea-level data from restricted coastal areas is essential for understanding local effects on relative sea level. Here, a revised relative mean sea-level curve for the area of the East Frisian island Langeoog, northwestern Germany, for the time period from 7200 cal BP until Recent is presented. The revision is based on the reinterpretation of previously published and unpublished data following the HOLSEA standardisation of data handling. Altogether 68 sea-level data taken from 32 cores and outcrops from Langeoog, its back-barrier and the adjacent mainland, which have been collected since the 1950s for mapping and landscape reconstruction purposes, are presented. The age constraints, derived from radiocarbon ages of basal peat, intercalated peat and molluscs and optical dating of tidal deposits, were evaluated in terms of the HOLSEA sea-level protocol and their stratigraphic context. For 7200 cal BP until modern times, 30 sea-level index points with different uncertainty ranges were defined. Additionally, a factor of decompaction was estimated for the remaining basal peat samples as well as for the underlying sediments of intercalated peat samples.
The comparison of the Langeoog relative sea-level curve with the relative sea-level curve from the western Netherlands shows that the Langeoog curve lies up to 0.80 m lower than the Dutch curve and diverges for the time before 6000 cal BP. Though the offset coincides with the overall predicted trend of glacial-isostatic adjustment, it is less than predicted.
Our study provides a useful assessment of legacy data and contributes to an improved sea-level index dataset for the southern North Sea coast.
Publisher
Cambridge University Press (CUP)
Reference105 articles.
1. The high-resolution Holocene sea-level curve for Northwest Germany: global signals, local effects or data-artefacts?
2. Holocene coastal landscape development – sedimentary response to a rising sea level at the Central Wadden Sea coast;Karle;Journal of Geosciences,2021
3. BSH (Bundesamt für Seeschifffahrt und Hydrographie), 2020. Gezeitenkalender. 2020: Hoch- und Niedrigwasserzeiten für die Deutsch Bucht und deren Flussgebiete. Bundesamt für Seeschifffahrt und Hydrographie (Hamburg, Rostock): 135 pp.
4. The IntCal20 Northern Hemisphere Radiocarbon Age Calibration Curve (0–55 cal kBP)
5. A 16000-year record of near-field relative sea-level changes, northwest Scotland, United Kingdom
Cited by
8 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献