气候变化领域集成服务门户(CCPortal): Glaciological characteristics in the Dome Fuji region and new assessment for "Oldest Ice"

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DOI	10.5194/tc-12-2413-2018
	Glaciological characteristics in the Dome Fuji region and new assessment for "Oldest Ice"
	Karlsson N.B.; Binder T.; Eagles G.; Helm V.; Pattyn F.; Van Liefferinge B.; Eisen O.
发表日期	2018
ISSN	19940416
卷号	12 期号:7
英文摘要	A key objective in palaeo-climatology is the retrieval of a continuous Antarctic ice-core record dating back 1.5 Ma. The identification of a suitable Antarctic site requires sufficient knowledge of the subglacial landscape beneath the Antarctic Ice Sheet. Here, we present new ice thickness information from the Dome Fuji region, East Antarctica, based on airborne radar surveys conducted during the 2014/15 and 2016/17 southern summers. Compared to previous maps of the region, the new dataset shows a more complex landscape with networks of valleys and mountain plateaus. We use the new dataset as input in a thermokinematic model that incorporates uncertainties in geothermal heat flux values in order to improve the predictions of potential ice-core sites. Our results show that especially the region immediately south of Dome Fuji station persists as a good candidate site for obtaining an old ice core. An initial assessment of basal conditions revealed the existence of what appears to be subglacial lakes. Further radar data analysis shows overall high continuity of layer stratigraphy in the region. This indicates that extending the age-depth information from the Dome Fuji ice core to a new ice-core drill site is a viable option. © 2018 Author(s).
学科领域	assessment method; glaciology; heat flux; ice core; ice thickness; paleoclimate; radar; subglacial environment; survey method; Antarctic Ice Sheet; Antarctica; Dome Fuji; East Antarctica
语种	英语
scopus关键词	assessment method; glaciology; heat flux; ice core; ice thickness; paleoclimate; radar; subglacial environment; survey method; Antarctic Ice Sheet; Antarctica; Dome Fuji; East Antarctica
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/119097
作者单位	Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany; Laboratoire de Glaciologie, Université Libre de Bruxelles, CP 160/03, Avenue F.D. Roosevelt 50, Brussels, 1050, Belgium; Department of Geosciences, University of Bremen, Bremen, Germany; Geological Survey of Denmark and Greenland, Copenhagen, Denmark
推荐引用方式 GB/T 7714	Karlsson N.B.,Binder T.,Eagles G.,et al. Glaciological characteristics in the Dome Fuji region and new assessment for "Oldest Ice"[J],2018,12(7).
APA	Karlsson N.B..,Binder T..,Eagles G..,Helm V..,Pattyn F..,...&Eisen O..(2018).Glaciological characteristics in the Dome Fuji region and new assessment for "Oldest Ice".Cryosphere,12(7).
MLA	Karlsson N.B.,et al."Glaciological characteristics in the Dome Fuji region and new assessment for "Oldest Ice"".Cryosphere 12.7(2018).