气候变化领域集成服务门户(CCPortal): Direct observations of submarine melt and subsurface geometry at a tidewater glacier

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DOI	10.1126/science.aax3528
	Direct observations of submarine melt and subsurface geometry at a tidewater glacier
	Sutherland D.A.; Jackson R.H.; Kienholz C.; Amundson J.M.; Dryer W.P.; Duncan D.; Eidam E.F.; Motyka R.J.; Nash J.D.
发表日期	2019
ISSN	0036-8075
起始页码	369
结束页码	374
卷号	365 期号:6451
英文摘要	Ice loss from the world’s glaciers and ice sheets contributes to sea level rise, influences ocean circulation, and affects ecosystem productivity. Ongoing changes in glaciers and ice sheets are driven by submarine melting and iceberg calving from tidewater glacier margins. However, predictions of glacier change largely rest on unconstrained theory for submarine melting. Here, we use repeat multibeam sonar surveys to image a subsurface tidewater glacier face and document a time-variable, three-dimensional geometry linked to melting and calving patterns. Submarine melt rates are high across the entire ice face over both seasons surveyed and increase from spring to summer. The observed melt rates are up to two orders of magnitude greater than predicted by theory, challenging current simulations of ice loss from tidewater glaciers. 2017 © The Authors,
英文关键词	geometry; glacier; ice sheet; multibeam sonar; observational method; oceanic circulation; sea level change; seasonal variation; tidewater glacier; underwater environment; article; geometry; glacier; melting point; simulation; spring; summer
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/245689
作者单位	Department of Earth Sciences, University of Oregon, Eugene, OR 97403, United States; College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331, United States; Department of Natural Sciences, University of Alaska Southeast, Juneau, AK 99801, United States; Institute for Geophysics, University of Texas at Austin, Austin, TX 78758, United States; Department of Marine Sciences, University of North Carolina, Chapel Hill, NC 27599, United States; Geophysical Institute, University of Alaska Fairbanks, Fairbanks, AK 99775, United States; Department of Marine and Coastal Sciences, Rutgers University, New Brunswick, NJ 08901, United States
推荐引用方式 GB/T 7714	Sutherland D.A.,Jackson R.H.,Kienholz C.,et al. Direct observations of submarine melt and subsurface geometry at a tidewater glacier[J],2019,365(6451).
APA	Sutherland D.A..,Jackson R.H..,Kienholz C..,Amundson J.M..,Dryer W.P..,...&Nash J.D..(2019).Direct observations of submarine melt and subsurface geometry at a tidewater glacier.Science,365(6451).
MLA	Sutherland D.A.,et al."Direct observations of submarine melt and subsurface geometry at a tidewater glacier".Science 365.6451(2019).