荷兰TNO地质调查局Busschers, Freek S.团队发现北海泥炭揭示的全新世早期全球海平面上升。2025年3月19日出版的《自然》杂志发表了这项成果。

在最后一次冰川消融的最后阶段，即全新世早期，相对海平面上升的速度是了解气候变暖下未来冰川融化和海平面变化的关键。关于这些速率的数据很少，这限制了对全新世早期北美和南极冰盖对全球海平面上升的相对贡献的了解。

研究组根据北海（多格兰）的88个海平面数据点（13.7-6.2万年前（ka））绘制了一条全新世早期海平面曲线。在消除了欧亚冰盖融化引起的区域冰川均衡调整模式后，残余海平面信号突出了海平面加速上升的两个阶段。来自北美和南极冰盖的融水驱动了这两个阶段，在10.3 ka和8.3 ka左右达到峰值，速率在8毫米/年和9毫米/年之间。

该研究结果还表明，11 ka至3 ka之间的全球平均海平面上升幅度为37.7 m（2σ范围，29.3-42.2 m） ，调和了基于冰盖重建的全球平均海平面上升估计值与以前有限的全新世早期海平面数据之间存在的不匹配。北海数据集具有广泛的时空覆盖范围，为北美和南极冰盖后期冰川消融的模式和速率提供了关键约束，提高了人们对地球系统对气候变化反应的理解。

附：英文原文

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

Author: 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.

Issue&Volume: 2025-03-19

Abstract: 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 (13.7–6.2thousand 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 10.3ka and 8.3ka with rates between 8mmyr1 and 9mmyr1. Our results also show that global mean sea-level rise between 11ka and 3ka amounted to 37.7m (2σ range, 29.3–42.2m), 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.

DOI: 10.1038/s41586-025-08769-7

Source: https://www.nature.com/articles/s41586-025-08769-7