气候变化领域集成服务门户(CCPortal): Late Plio-Pleistocene evolution of the Eurasian Ice Sheets inferred from sediment input along the northeastern Atlantic continental margin

CCPortal

DOI	10.1016/j.quascirev.2022.107433
	Late Plio-Pleistocene evolution of the Eurasian Ice Sheets inferred from sediment input along the northeastern Atlantic continental margin
	Lien, Oyvind Flataker; Hjelstuen, Berit O.; Zhang, Xu; Sejrup, Hans Petter
通讯作者	Lien, OF (通讯作者)
发表日期	2022
ISSN	0277-3791
EISSN	1873-457X
卷号	282
英文摘要	High-latitude marine sediment archives may contain information about the configuration and dynamics of former ice sheets, paleoclimate and the intensity of glacial erosion and uplift in catchment areas. Compiling information on the Late Cenozoic sediment packages along the NE Atlantic continental margin shows that large sediment volumes (c. 982 x 10(3) km(3)) were deposited during the Northern Hemisphere Glaciations (NHG), and that significant spatial and temporal variations in sediment input occurred during three distinct NHG Phases. NHG Phase I (2.7-1.5 Ma) was characterized by high sediment input to the trough mouth fan systems offshore Svalbard, suggesting strong glacial erosion and the development of large ice sheets over Svalbard. Comparatively moderate sedimentation and erosion rates are observed along the SW Barents Sea and the Norwegian margins during NHG Phase I. This indicates more restricted ice sheets over Fennoscandia compared to Svalbard, although periods of shelf edge glaciation most likely occurred. The most prominent overall margin development occurred during NHG Phase II (1.5-0.8 Ma), when recurrent large-scale, continental shelf edge, glaciations are suggested for the entire Eurasian Ice Sheets (EurIS). Compared to NHG Phase I, average sedimentation rates are three (91 cm/kyr) and two times higher (20 cm/kyr), respectively, in the Kara-Barents Sea-Svalbard Ice Sheet (KBSIS) region and the Fennoscandian/British-Irish Ice Sheet (FIS/BIIS) region. During NHG Phase III (0.8-0 Ma), sediment input decreases considerably (73%) along the marine margin of the KBSIS, while increasing significantly (62%) from the FIS/BIIS, in comparison to NHG Phase II. These estimates mark a major transition in the evolution of the EurIS, where the submergence below sea level of the Barents Sea region and the initiation of the Norwegian Channel Ice Stream are suggested to be key factors in this change. Furthermore, the submergence of the Barents Sea region affected ocean-atmosphere coupling and circulation which may have had a potential impact on global long-term climate change. (C) 2022 The Authors. Published by Elsevier Ltd.
关键词	NORTHERN NORTH-SEA LATE CENOZOIC EROSION MID-NORWEGIAN MARGIN TROUGH-MOUTH FAN BARENTS SEA NORDIC SEAS GLACIAL HISTORY DEPOSITIONAL-ENVIRONMENTS QUATERNARY SEDIMENTATION THERMOHALINE CIRCULATION
英文关键词	Eurasian Ice Sheets; Late Plio-Pleistocene; Ice sheet development; Sediment volumes; Erosion rates; Sedimentation rates; Glacial dynamics
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000796228900005
来源期刊	QUATERNARY SCIENCE REVIEWS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260579
推荐引用方式 GB/T 7714	Lien, Oyvind Flataker,Hjelstuen, Berit O.,Zhang, Xu,et al. Late Plio-Pleistocene evolution of the Eurasian Ice Sheets inferred from sediment input along the northeastern Atlantic continental margin[J]. 中国科学院青藏高原研究所,2022,282.
APA	Lien, Oyvind Flataker,Hjelstuen, Berit O.,Zhang, Xu,&Sejrup, Hans Petter.(2022).Late Plio-Pleistocene evolution of the Eurasian Ice Sheets inferred from sediment input along the northeastern Atlantic continental margin.QUATERNARY SCIENCE REVIEWS,282.
MLA	Lien, Oyvind Flataker,et al."Late Plio-Pleistocene evolution of the Eurasian Ice Sheets inferred from sediment input along the northeastern Atlantic continental margin".QUATERNARY SCIENCE REVIEWS 282(2022).