气候变化领域集成服务门户(CCPortal): Multi-Century Impacts of Ice Sheet Retreat on Sea Level and Ocean Tides in Hudson Bay

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DOI	10.1029/2019JC015104
	Multi-Century Impacts of Ice Sheet Retreat on Sea Level and Ocean Tides in Hudson Bay
	Hayden A.-M.; Wilmes S.-B.; Gomez N.; Green J.A.M.; Pan L.; Han H.; Golledge N.R.
发表日期	2020
ISSN	21699275
卷号	125 期号:11
英文摘要	Past and modern large-scale ice sheet loss results in geographically variable sea level changes. At present, in Hudson Bay, Canada, sea level is decreasing due to glacial isostatic adjustment, which represents a departure from the globally averaged sea level rise. However, there are large uncertainties in future sea level trends with further polar ice sheet retreat in the coming centuries. Sea level changes affect ocean tides considerably because tides are highly sensitive to changes in bathymetry. Here, we present multi-century sea level projections associated with a suite of past and future ice loss scenarios and consider the impact of these changes on ocean tides using an established tidal model. Modern tides in Hudson Bay are poorly resolved due to large uncertainties in bathymetry. To establish an initial condition for our simulations, we constrain bathymetry in the bay using tide observations. Due to gravitational, Earth rotational and deformational effects, Greenland ice loss will produce a small sea level fall in the bay, while Antarctic ice loss will produce a larger than average sea level rise. Our results show that the response of the Antarctic ice sheet to climate change strongly impacts the magnitude and sign of future sea level and tidal amplitude changes in the region, with the largest changes predicted in Hudson Strait and Foxe Basin. We emphasize that further constraints on bathymetry and accurate projections of sea level and tides in Hudson Bay are imperative for assessing the associated impacts on coastal communities and ecosystems. © 2020. American Geophysical Union. All Rights Reserved.
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/186588
作者单位	Department of Earth and Planetary Sciences, McGill University, Montreal, QC, Canada; Now at Department of Geography and Environmental Management, University of Waterloo, Waterloo, ON, Canada; School of Ocean Sciences, Bangor University, Gwynedd, United Kingdom; Antarctic Research Centre, Victoria University of Wellington, Wellington, New Zealand
推荐引用方式 GB/T 7714	Hayden A.-M.,Wilmes S.-B.,Gomez N.,et al. Multi-Century Impacts of Ice Sheet Retreat on Sea Level and Ocean Tides in Hudson Bay[J],2020,125(11).
APA	Hayden A.-M..,Wilmes S.-B..,Gomez N..,Green J.A.M..,Pan L..,...&Golledge N.R..(2020).Multi-Century Impacts of Ice Sheet Retreat on Sea Level and Ocean Tides in Hudson Bay.Journal of Geophysical Research: Oceans,125(11).
MLA	Hayden A.-M.,et al."Multi-Century Impacts of Ice Sheet Retreat on Sea Level and Ocean Tides in Hudson Bay".Journal of Geophysical Research: Oceans 125.11(2020).