气候变化领域集成服务门户(CCPortal): Accumulation patterns around Dome C, East Antarctica, in the last 73 kyr

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DOI	10.5194/tc-12-1401-2018
	Accumulation patterns around Dome C, East Antarctica, in the last 73 kyr
	Cavitte M.G.P.; Parrenin F.; Ritz C.; Young A.; Van Liefferinge B.; Blankenship D.D.; Frezzotti M.; Roberts J.L.
发表日期	2018
ISSN	19940416
卷号	12 期号:4
英文摘要	We reconstruct the pattern of surface accumulation in the region around Dome C, East Antarctica, since the last glacial. We use a set of 18 isochrones spanning all observable depths of the ice column, interpreted from various ice-penetrating radar surveys and a 1-D ice flow model to invert for accumulation rates in the region. The shallowest four isochrones are then used to calculate paleoaccumulation rates between isochrone pairs using a 1-D assumption where horizontal advection is negligible in the time interval of each layer. We observe that the large-scale (100sĝ€km) surface accumulation gradient is spatially stable through the last 73ĝ€kyr, which reflects current modeled and observed precipitation gradients in the region. We also observe small-scale (10ĝ€sĝ€km) accumulation variations linked to snow redistribution at the surface, due to changes in its slope and curvature in the prevailing wind direction that remain spatially stationary since the last glacial. © Author(s) 2018.
学科领域	accumulation rate; advection; flow modeling; ice flow; Last Glacial; map; pattern recognition; precipitation (climatology); radar; reconstruction; wind direction; Antarctica; Dome Concordia; East Antarctica
语种	英语
scopus关键词	accumulation rate; advection; flow modeling; ice flow; Last Glacial; map; pattern recognition; precipitation (climatology); radar; reconstruction; wind direction; Antarctica; Dome Concordia; 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/119174
作者单位	Institute for Geophysics, Jackson School of Geosciences, University of Texas at Austin, Austin, TX, United States; Department of Geological Sciences, Jackson School of Geosciences, University of Texas at Austin, Austin, TX, United States; Univ. Grenoble Alpes, CNRS, IRD, Grenoble, 38000, France; Laboratoire de Glaciologie, Université Libre de Bruxelles, Avenue F. D. Roosevelt 50, Brussels, 1050, Belgium; ENEA, Agenzia Nazionale per le Nuove Tecnologie, l'energia e lo sviluppo sostenibile, Rome, Italy; Australian Antarctic Division, Kingston, TAS 7050, Australia; Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, Hobart, TAS 7001, Australia
推荐引用方式 GB/T 7714	Cavitte M.G.P.,Parrenin F.,Ritz C.,et al. Accumulation patterns around Dome C, East Antarctica, in the last 73 kyr[J],2018,12(4).
APA	Cavitte M.G.P..,Parrenin F..,Ritz C..,Young A..,Van Liefferinge B..,...&Roberts J.L..(2018).Accumulation patterns around Dome C, East Antarctica, in the last 73 kyr.Cryosphere,12(4).
MLA	Cavitte M.G.P.,et al."Accumulation patterns around Dome C, East Antarctica, in the last 73 kyr".Cryosphere 12.4(2018).