Global sea-level rise in the early Holocene revealed from North Sea peats

• 成果类型: Article
• 署名作者: Hijma, Marc P.; Bradley, Sarah L.; Cohen, Kim M.; van der Wal, Wouter; Barlow, Natasha L. M.; Blank, Bas; Frechen, Manfred; Hennekam, Rick; van Heteren, Sytze; Kiden, Patrick; Mavritsakis, Antonis; Meijninger, Bart M. L.; Reichart, Gert-Jan; Reinhardt, Lutz; Rijsdijk, Kenneth F.; Vink, Annemiek; Busschers, Freek S.
• 署名单位: Deltares; Wageningen University & Research; University of Sheffield; Utrecht University; Delft University of Technology; University of Leeds; Utrecht University; Royal Netherlands Institute for Sea Research (NIOZ); Netherlands Organization Applied Science Research; Deltares; Utrecht University; University of Amsterdam
• 刊物名称: Nature
• ISSN/ISSBN: 0028-1275
• DOI: 10.1038/s41586-025-08769-7
• 发表日期: 2025-03-20
• 关键词: glacial isostatic-adjustment; rhine-meuse delta; ice-sheet; netherlands implications; western netherlands; groundwater-level; land movements; flevo lagoon; upper-mantle; reconstruction

摘要

Rates of relative sea-level rise during the final stage of the last deglaciation, the early Holocene, are key to understanding future ice melt and sea-level change under a warming climate1. Data about these rates are scarce2, and this limits insight into the relative contributions of the North American and Antarctic ice sheets to global sea-level rise during the early Holocene. Here we present an early Holocene sea-level curve based on 88 sea-level data points (13.7-6.2 thousand years ago (ka)) from the North Sea (Doggerland3,4). After removing the pattern of regional glacial isostatic adjustment caused by the melting of the Eurasian Ice Sheet, the residual sea-level signal highlights two phases of accelerated sea-level rise. Meltwater sourced from the North American and Antarctic ice sheets drove these two phases, peaking around 10.3 ka and 8.3 ka with rates between 8 mm yr-1 and 9 mm yr-1. Our results also show that global mean sea-level rise between 11 ka and 3 ka amounted to 37.7 m (2 sigma range, 29.3-42.2 m), reconciling the mismatch that existed between estimates of global mean sea-level rise based on ice-sheet reconstructions and previously limited early Holocene sea-level data. With its broad spatiotemporal coverage, the North Sea dataset provides critical constraints on the patterns and rates of the late-stage deglaciation of the North American and Antarctic ice sheets, improving our understanding of the Earth-system response to climate change.