气候变化领域集成服务门户(CCPortal): Net accumulation rates derived from ice core stable isotope records of Pío XI glacier, Southern Patagonia Icefield

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DOI	10.5194/tc-7-1635-2013
	Net accumulation rates derived from ice core stable isotope records of Pío XI glacier, Southern Patagonia Icefield
	Schwikowski M.; Schläppi M.; Santibañez P.; Rivera A.; Casassa G.
发表日期	2013
ISSN	19940416
卷号	7 期号:5
英文摘要	Pío XI, the largest glacier of the Southern Patagonia Icefield, reached its neoglacial maximum extent in 1994 and is one of the few glaciers in that area which is not retreating. In view of the recent warming it is important to understand glacier responses to climate changes. Due to its remoteness and the harsh conditions in Patagonia, no systematic mass balance studies have been performed. In this study we derived net accumulation rates for the period 2000-2006 from a 50 m (33.2 4 m weq) ice core collected in the accumulation area of Pío XI (2600 m a.s.l., 49 16'40"S, 73 21'14"W). Borehole temperatures indicate near temperate ice, but the average melt percent is only 16 ± 14%. Records of stable isotopes are well preserved and were used for identification of annual layers. Net accumulation rates range from 3.4-7.1 water equivalent (m weq) with an average of 5.8 m weq, comparable to precipitation amounts at the Chilean coast, but not as high as expected for the Icefield. Ice core stable isotope data correlate well with upper air temperatures and may be used as temperature proxy. © 2013 Author(s).
学科领域	accumulation rate; air temperature; climate effect; geoaccumulation; glacier dynamics; glacier mass balance; ice core; proxy climate record; stable isotope; warming; Chile; Magallanes; Patagonia; Pio XI Glacier
语种	英语
scopus关键词	accumulation rate; air temperature; climate effect; geoaccumulation; glacier dynamics; glacier mass balance; ice core; proxy climate record; stable isotope; warming; Chile; Magallanes; Patagonia; Pio XI Glacier
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/120240
作者单位	Paul Scherrer Institut (PSI), Villigen, Switzerland; Department for Chemistry and Biochemistry, University of Bern, Switzerland; Oeschger Centre for Climate Change Research, University of Bern, Switzerland; Centro de Estudios Científicos (CECS), Valdivia, Chile; Departamento de Geografía, Universidad de Chile, Santiago, Chile
推荐引用方式 GB/T 7714	Schwikowski M.,Schläppi M.,Santibañez P.,et al. Net accumulation rates derived from ice core stable isotope records of Pío XI glacier, Southern Patagonia Icefield[J],2013,7(5).
APA	Schwikowski M.,Schläppi M.,Santibañez P.,Rivera A.,&Casassa G..(2013).Net accumulation rates derived from ice core stable isotope records of Pío XI glacier, Southern Patagonia Icefield.Cryosphere,7(5).
MLA	Schwikowski M.,et al."Net accumulation rates derived from ice core stable isotope records of Pío XI glacier, Southern Patagonia Icefield".Cryosphere 7.5(2013).