气候变化领域集成服务门户(CCPortal): Calving Seasonality Associated With Melt-Undercutting and Lake Ice Cover

CCPortal

DOI	10.1029/2019GL086561
	Calving Seasonality Associated With Melt-Undercutting and Lake Ice Cover
	Mallalieu J.; Carrivick J.L.; Quincey D.J.; Smith M.W.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:8
英文摘要	A detailed understanding of calving processes at the lacustrine margins of the Greenland ice sheet is necessary for accurately forecasting its dynamic response to ongoing climate change. However, existing data sets of lacustrine calving are limited to summer seasons and to alpine glaciers. Here, we use an integrated time-lapse and structure-from-motion approach to generate the first continuous year-round volumetric record of calving processes at a lacustrine ice sheet margin. We identify two distinct calving regimes that are associated with melt-undercutting and lake ice cover. We also find that calving rates respond rapidly to sudden lake drainage. Given that lake temperature, lake ice cover, and sudden lake drainages are controlled by air temperature and ice-margin thinning, we suggest that climate change, manifested in lengthening summer seasons, will accelerate rates of mass loss and terminus recession at lacustrine ice-margins in Greenland. © 2020. The Authors.
英文关键词	Climate change; Glaciers; Lakes; Air temperature; Alpine glacier; Greenland Ice Sheet; Ice sheet; Lake temperatures; Seasonality; Structure from motion; Summer season; Ice; air temperature; climate change; Cordilleran Ice Sheet; dynamic response; glacier; ice cover; ice sheet; seasonality; Arctic; Greenland
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170450
作者单位	School of Geography and Water@Leeds, University of Leeds, Leeds, West Yorkshire, United Kingdom
推荐引用方式 GB/T 7714	Mallalieu J.,Carrivick J.L.,Quincey D.J.,et al. Calving Seasonality Associated With Melt-Undercutting and Lake Ice Cover[J],2020,47(8).
APA	Mallalieu J.,Carrivick J.L.,Quincey D.J.,&Smith M.W..(2020).Calving Seasonality Associated With Melt-Undercutting and Lake Ice Cover.Geophysical Research Letters,47(8).
MLA	Mallalieu J.,et al."Calving Seasonality Associated With Melt-Undercutting and Lake Ice Cover".Geophysical Research Letters 47.8(2020).