气候变化领域集成服务门户(CCPortal): Quantifying mass balance processes on the Southern Patagonia Icefield

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DOI	10.5194/tc-9-25-2015
	Quantifying mass balance processes on the Southern Patagonia Icefield
	Schaefer M.; MacHguth H.; Falvey M.; Casassa G.; Rignot E.
发表日期	2015
ISSN	19940416
卷号	9 期号:1
英文摘要	We present surface mass balance simulations of the Southern Patagonia Icefield (SPI) driven by downscaled reanalysis data. The simulations were evaluated and interpreted using geodetic mass balances, measured point balances and a complete velocity field of the icefield for spring 2004. The high measured accumulation of snow of up to 15.4 m w.e. yrg'1 (meters water equivalent per year) as well as the high measured ablation of up to 11 m w.e. yrg'1 is reproduced by the model. The overall modeled surface mass balance was positive and increasing during 1975-2011. Subtracting the surface mass balance from geodetic balances, calving fluxes were inferred. Mass losses of the SPI due to calving were strongly increasing from 1975-2000 to 2000-2011 and higher than losses due to surface melt. Calving fluxes were inferred for the individual glacier catchments and compared to fluxes estimated from velocity data. Measurements of ice thickness and flow velocities at the glaciers' front and spatially distributed accumulation measurements can help to reduce the uncertainties of the different terms in the mass balance of the Southern Patagonia Icefield. © 2015 Author(s).
学科领域	cryosphere; flow velocity; glacier mass balance; glaciology; ice field; ice thickness; velocity profile; Patagonia
语种	英语
scopus关键词	cryosphere; flow velocity; glacier mass balance; glaciology; ice field; ice thickness; velocity profile; Patagonia
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/119973
作者单位	Instituto de Ciencias Físicas y Matematicas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile; Instituto de Ciencias Marinas y Limnológicas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile; Arctic Technology Centre, Technical University of Denmark, Kgs. Lyngby, Denmark; Department of Geophysics, Universidad de Chile, Santiago, Chile; Dept. of Geoestudios, Las Vertientes, San José de Maipo, Chile; Universidad de Magallanes, Punta Arenas, Chile; Jet Propulsion Laboratory, Pasadena, CA, United States; University of California, Department of Earth System Science, Irvine, CA, United States
推荐引用方式 GB/T 7714	Schaefer M.,MacHguth H.,Falvey M.,et al. Quantifying mass balance processes on the Southern Patagonia Icefield[J],2015,9(1).
APA	Schaefer M.,MacHguth H.,Falvey M.,Casassa G.,&Rignot E..(2015).Quantifying mass balance processes on the Southern Patagonia Icefield.Cryosphere,9(1).
MLA	Schaefer M.,et al."Quantifying mass balance processes on the Southern Patagonia Icefield".Cryosphere 9.1(2015).