气候变化领域集成服务门户(CCPortal): The Effect of Sea Ice on Tidal Propagation in the Kitikmeot Sea, Canadian Arctic Archipelago

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DOI	10.1029/2020JC016786
	The Effect of Sea Ice on Tidal Propagation in the Kitikmeot Sea, Canadian Arctic Archipelago
	Rotermund L.M.; Williams W.J.; Klymak J.M.; Wu Y.; Scharien R.K.; Haas C.
发表日期	2021
ISSN	21699275
卷号	126 期号:5
英文摘要	The tides in the Kitikmeot Sea, in the southern Canadian Arctic Archipelago, are found to be heavily influenced by seasonal sea-ice formation and blocking in a strait. Data from a moored current profiler in Dease Strait exhibit strong tidal damping during wintertime seasonal sea-ice cover, with 50%–60% reduction in tidal elevation and 65% reduction in tidal velocities. We used a 3D unstratified barotropic numerical tidal model of the region to show that the observed wintertime tidal damping likely requires both high sea-ice friction and a partial sea-ice blockage in Victoria Strait (VS), the eastern gateway of the Kitikmeot Sea, where tidal-induced ridging causes thick, rough ice to accumulate over its shallow sill. Our analysis of the model shows different dynamics for the M2 and K1 tides. Both tidal constituents are dominated by the Atlantic tides entering through VS. Overall, ∼90% of the M2 tidal energy entering VS does not reach Dease Strait because, in addition to dissipation in VS (∼25%), it is significantly diverted into adjoining bays and around an amphidrome in eastern Queen Maud Gulf (∼65%). In contrast, the smaller K1 tide is less diverted into the subsidiary channels, after ∼20% dissipation in VS and only ∼25% in adjoining bays, it propagates far into the region and is amplified due to resonance in Dease Strait and Coronation Gulf, resulting in larger tidal height than the M2 tide in Coronation Gulf. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	Canadian Arctic Archipelago; FVCOM; sea-ice roughness; surface friction; tidal damping
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186343
作者单位	Department of Oceanography, Dalhousie University, Halifax, NS, Canada; Department of Physics & Astronomy, University of Victoria, Victoria, BC, Canada; Fisheries and Oceans Canada, Institute of Ocean Sciences, Sidney, BC, Canada; School of Earth and Ocean Sciences, University of Victoria, Victoria, BC, Canada; Fisheries and Oceans Canada, Bedford Institute of Oceanography, Dartmouth, NS, Canada; Department of Geography, University of Victoria, Victoria, BC, Canada; Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research, Bremerhaven, Germany; Department of Earth and Space Sciences and Engineering, York University, Toronto, ON, Canada
推荐引用方式 GB/T 7714	Rotermund L.M.,Williams W.J.,Klymak J.M.,et al. The Effect of Sea Ice on Tidal Propagation in the Kitikmeot Sea, Canadian Arctic Archipelago[J],2021,126(5).
APA	Rotermund L.M.,Williams W.J.,Klymak J.M.,Wu Y.,Scharien R.K.,&Haas C..(2021).The Effect of Sea Ice on Tidal Propagation in the Kitikmeot Sea, Canadian Arctic Archipelago.Journal of Geophysical Research: Oceans,126(5).
MLA	Rotermund L.M.,et al."The Effect of Sea Ice on Tidal Propagation in the Kitikmeot Sea, Canadian Arctic Archipelago".Journal of Geophysical Research: Oceans 126.5(2021).