气候变化领域集成服务门户(CCPortal): Ocean cavity regime shift reversed West Antarctic grounding line retreat in the late Holocene

CCPortal

DOI	10.1038/s41467-024-47369-3
	Ocean cavity regime shift reversed West Antarctic grounding line retreat in the late Holocene
	Lowry, Daniel P.; Han, Holly K.; Golledge, Nicholas R.; Gomez, Natalya; Johnson, Katelyn M.; McKay, Robert M.
发表日期	2024
EISSN	2041-1723
起始页码	15
结束页码	1
卷号	15 期号:1
英文摘要	Recent geologic and modeled evidence suggests that the grounding line of the Siple Coast of the West Antarctic Ice Sheet (WAIS) retreated hundreds of kilometers beyond its present position in the middle to late Holocene and readvanced within the past 1.7 ka. This grounding line reversal has been attributed to both changing rates of isostatic rebound and regional climate change. Here, we test these two hypotheses using a proxy-informed ensemble of ice sheet model simulations with varying ocean thermal forcing, global glacioisostatic adjustment (GIA) model simulations, and coupled ice sheet-GIA simulations that consider the interactions between these processes. Our results indicate that a warm to cold ocean cavity regime shift is the most likely cause of this grounding line reversal, but that GIA influences the rate of ice sheet response to oceanic changes. This implies that the grounding line here is sensitive to future changes in sub-ice shelf ocean circulation. Using ice sheet model and glacio-isostatic adjustment model simulations and paleoclimate proxies, this work demonstrates that the most likely cause of past West Antarctic grounding-line reversal was a regime shift from a warm to cold ocean cavity.
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:001207290500009
来源期刊	NATURE COMMUNICATIONS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/294253
作者单位	GNS Science - New Zealand; United States Department of Energy (DOE); Los Alamos National Laboratory; California Institute of Technology; National Aeronautics & Space Administration (NASA); NASA Jet Propulsion Laboratory (JPL); Victoria University Wellington; McGill University
推荐引用方式 GB/T 7714	Lowry, Daniel P.,Han, Holly K.,Golledge, Nicholas R.,et al. Ocean cavity regime shift reversed West Antarctic grounding line retreat in the late Holocene[J],2024,15(1).
APA	Lowry, Daniel P.,Han, Holly K.,Golledge, Nicholas R.,Gomez, Natalya,Johnson, Katelyn M.,&McKay, Robert M..(2024).Ocean cavity regime shift reversed West Antarctic grounding line retreat in the late Holocene.NATURE COMMUNICATIONS,15(1).
MLA	Lowry, Daniel P.,et al."Ocean cavity regime shift reversed West Antarctic grounding line retreat in the late Holocene".NATURE COMMUNICATIONS 15.1(2024).