气候变化领域集成服务门户(CCPortal): Ice front retreat reconfigures meltwater-driven gyres modulating ocean heat delivery to an Antarctic ice shelf

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DOI	10.1038/s41467-022-27968-8
	Ice front retreat reconfigures meltwater-driven gyres modulating ocean heat delivery to an Antarctic ice shelf
	Yoon S.-T.; Lee W.S.; Nam S.H.; Lee C.-K.; Yun S.; Heywood K.; Boehme L.; Zheng Y.; Lee I.; Choi Y.; Jenkins A.; Jin E.K.; Larter R.; Wellner J.; Dutrieux P.; Bradley A.T.
发表日期	2022
ISSN	2041-1723
卷号	13 期号:1
英文摘要	Pine Island Ice Shelf (PIIS) buttresses the Pine Island Glacier, the key contributor to sea-level rise. PIIS has thinned owing to ocean-driven melting, and its calving front has retreated, leading to buttressing loss. PIIS melting depends primarily on the thermocline variability in its front. Furthermore, local ocean circulation shifts adjust heat transport within Pine Island Bay (PIB), yet oceanic processes underlying the ice front retreat remain unclear. Here, we report a PIB double-gyre that moves with the PIIS calving front and hypothesise that it controls ocean heat input towards PIIS. Glacial melt generates cyclonic and anticyclonic gyres near and off PIIS, and meltwater outflows converge into the anticyclonic gyre with a deep-convex-downward thermocline. The double-gyre migrated eastward as the calving front retreated, placing the anticyclonic gyre over a shallow seafloor ridge, reducing the ocean heat input towards PIIS. Reconfigurations of meltwater-driven gyres associated with moving ice boundaries might be crucial in modulating ocean heat delivery to glacial ice. © 2022, The Author(s).
语种	英语
scopus关键词	gyre; ice field; ice retreat; ice shelf; iceberg calving; meltwater; sea level change; thermocline; Antarctica; article; glacier; heat; ice shelf; ocean circulation; thermocline; Antarctic Ice Sheet; Antarctica; Pine Island Bay; Pine Island Glacier; West Antarctica
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/250533
作者单位	School of Earth System Sciences, Kyungpook National University, 80, Daehak-ro, Buk-gu, Daegu, 41566, South Korea; Division of Glacial Environment Research, Korea Polar Research Institute, Incheon, 21990, South Korea; School of Earth and Environmental Sciences/Research Institute of Oceanography, Seoul National University, Gwanak-gu, Seoul, 08826, South Korea; School of Environmental Sciences, University of East Anglia, Norwich, Norfolk, NF4 7TJ, United Kingdom; Scottish Oceans Institute, University of St Andrews, Andrews, Fife, KY16 8LB, United Kingdom; Department of Oceanography, Pusan National University, Geumjeong-gu, Busan, 46241, South Korea; Department of Geography and Environmental Sciences, Northumbria University, Newcastle-upon-Tyne, NE1 8ST, United Kingdom; British Antarctic Survey, Cambridge, CB3 0ET, United Kingdom; Department of Earth and Atmospheric Sciences, University of Houston, Houston, TX 77004, United States
推荐引用方式 GB/T 7714	Yoon S.-T.,Lee W.S.,Nam S.H.,et al. Ice front retreat reconfigures meltwater-driven gyres modulating ocean heat delivery to an Antarctic ice shelf[J],2022,13(1).
APA	Yoon S.-T..,Lee W.S..,Nam S.H..,Lee C.-K..,Yun S..,...&Bradley A.T..(2022).Ice front retreat reconfigures meltwater-driven gyres modulating ocean heat delivery to an Antarctic ice shelf.Nature Communications,13(1).
MLA	Yoon S.-T.,et al."Ice front retreat reconfigures meltwater-driven gyres modulating ocean heat delivery to an Antarctic ice shelf".Nature Communications 13.1(2022).