气候变化领域集成服务门户(CCPortal): Hagen Bræ: A Surging Glacier in North Greenland

CCPortal

DOI	10.1029/2019GL085802
	Hagen Bræ: A Surging Glacier in North Greenland—35 Years of Observations
	Solgaard A.M.; Simonsen S.B.; Grinsted A.; Mottram R.; Karlsson N.B.; Hansen K.; Kusk A.; Sørensen L.S.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:6
英文摘要	We use remotely sensed ice velocities in combination with observations of surface elevation and glacier area change to investigate the dynamics of Hagen Bræ, North Greenland in high detail over the last 35 years. From our data, we can establish for the first time that Hagen Bræ is a surge-type glacier with characteristics of both Alaskan- and Svalbard-type surging glaciers. We argue that the observed surge was preconditioned by the glacier geometry and triggered by englacially stored meltwater. At present, the glacier is in a transitional state between active and quiescence phases and is not building up to its pre-surge geometry. We suggest that the glacier is adjusting to the loss of its floating section, general thinning, and changes in fjord conditions that occurred over the study period which are unrelated to the surge behavior. The high temporal resolution of the ice velocity data gives insight to the sub-annual glacier flow. ©2020. The Authors.
英文关键词	Glaciers; Remote sensing; Glacier geometry; High temporal resolution; Ice dynamics; Ice flow; Ice velocity; North greenland; Surface elevations; Transitional state; Ice; fjord; glacier dynamics; glacier surge; ice flow; meltwater; observational method; remote sensing; Alaska; Arctic; Germany; Greenland; Hagen; North Rhine-Westphalia; Svalbard; Svalbard and Jan Mayen; United States
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/170551
作者单位	The Department of Glaciology and Climate, The Geological Survey of Denmark and Greenland (GEUS), Copenhagen, Denmark; National Space Institute, Technical University of Denmark, Lyngby, Denmark; Physics of Ice, Climate, and Earth, Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark; Danish Meteorological Institute (DMI), Copenhagen, Denmark
推荐引用方式 GB/T 7714	Solgaard A.M.,Simonsen S.B.,Grinsted A.,等. Hagen Bræ: A Surging Glacier in North Greenland—35 Years of Observations[J],2020,47(6).
APA	Solgaard A.M..,Simonsen S.B..,Grinsted A..,Mottram R..,Karlsson N.B..,...&Sørensen L.S..(2020).Hagen Bræ: A Surging Glacier in North Greenland—35 Years of Observations.Geophysical Research Letters,47(6).
MLA	Solgaard A.M.,et al."Hagen Bræ: A Surging Glacier in North Greenland—35 Years of Observations".Geophysical Research Letters 47.6(2020).