气候变化领域集成服务门户(CCPortal): Changes in the southeast Vatnajo7die;kull ice cap, Iceland, between ∼1890 and 2010c

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DOI	10.5194/tc-9-565-2015
	Changes in the southeast Vatnajo7die;kull ice cap, Iceland, between ∼1890 and 2010c
	Hannesdóttir H.; Björnsson H.; Pálsson F.; Adalgeirsdóttir G.; Gudmundsson Sv.
发表日期	2015
ISSN	19940416
卷号	9 期号:2
英文摘要	Area and volume changes and the average geodetic mass balance of the non-surging outlet glaciers of the southeast Vatnajökull ice cap, Iceland, during different time periods between ∼ 1890 and 2010, are derived from a multi-temporal glacier inventory. A series of digital elevation models (DEMs) (∼ 1890, 1904, 1936, 1945, 1989, 2002, 2010) are compiled from glacial geomorphological features, historical photographs, maps, aerial images, DGPS measurements and a lidar survey. Given the mapped basal topography, we estimate volume changes since the end of the Little Ice Age (LIA) ∼ 1890. The variable volume loss of the outlets to similar climate forcing is related to their different hypsometry, basal topography, and the presence of proglacial lakes. In the post-LIA period, the glacierized area decreased by 164 km2 (or from 1014 to 851 km2) and the glaciers had lost 10-30 % of their ∼ 1890 area by 2010 (anywhere from 3 to 36 km2). The glacier surface lowered by 150-270 m near the terminus and the outlet glaciers collectively lost 60 ± 8 km3 of ice, which is equivalent to 0.15 ± 0.02 mm of sea-level rise. The volume loss of individual glaciers was in the range of 15-50%, corresponding to a geodetic mass balance between -0.70 and -0.32 m w.e. a-1. The annual rate of mass change during the post-LIA period was most negative in 2002-2010, on average -1.34 ± 0.12 m w.e. a-1, which is among the most negative mass balance values recorded worldwide in the early 21st century. © 2015 Author(s).
学科领域	climate forcing; cryosphere; digital elevation model; glacier mass balance; ice cap; Little Ice Age; proglacial environment; sea level change; twenty first century; volume change; Iceland; Vatnajokull
语种	英语
scopus关键词	climate forcing; cryosphere; digital elevation model; glacier mass balance; ice cap; Little Ice Age; proglacial environment; sea level change; twenty first century; volume change; Iceland; Vatnajokull
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119941
作者单位	Institute of Earth Sciences, University of Iceland, Reykjavík, 101, Iceland
推荐引用方式 GB/T 7714	Hannesdóttir H.,Björnsson H.,Pálsson F.,et al. Changes in the southeast Vatnajo7die;kull ice cap, Iceland, between ∼1890 and 2010c[J],2015,9(2).
APA	Hannesdóttir H.,Björnsson H.,Pálsson F.,Adalgeirsdóttir G.,&Gudmundsson Sv..(2015).Changes in the southeast Vatnajo7die;kull ice cap, Iceland, between ∼1890 and 2010c.Cryosphere,9(2).
MLA	Hannesdóttir H.,et al."Changes in the southeast Vatnajo7die;kull ice cap, Iceland, between ∼1890 and 2010c".Cryosphere 9.2(2015).