globalchange  > 气候变化与战略
DOI: 10.5194/tc-15-3007-2021
论文题名:
Brief communication: Growth and decay of an ice stupa in alpine conditions - a simple model driven by energy-flux observations over a glacier surface
作者: Oerlemans J.; Balasubramanian S.; Clavuot C.; Keller F.
刊名: Cryosphere
ISSN: 19940416
出版年: 2021
卷: 15, 期:6
起始页码: 3007
结束页码: 3012
语种: 英语
英文摘要: We present a simple model to calculate the evolution of an ice stupa (artificial ice reservoir). The model is formulated for a cone geometry and driven by energy balance measurements over a glacier surface for a 5-year period. An "exposure factor"is introduced to deal with the fact that an ice stupa has a very rough surface and is more exposed to wind than a flat glacier surface. The exposure factor enhances the turbulent fluxes. For characteristic alpine conditions at 2100gm, an ice stupa may reach a volume of 200 to 400gm3 in early April. We show sensitivities of ice stupa size to temperature changes and exposure factor. The model may also serve as an educational tool, with which the effects of snow cover, switching off water during daytime, different starting dates, switching off water during high wind speeds, etc. can easily be evaluated. © 2021 Johannes Oerlemans et al.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/164775
Appears in Collections:气候变化与战略

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作者单位: Institute for Marine and Atmospheric Research, Utrecht University, Princetonplein 5, Utrecht, 3585CC, Netherlands; Department of Geosciences, University of Fribourg, Fribourg, Switzerland; Architecture Clavuot, Gäugelistrasse 49, Chur, 7000, Switzerland; Academia Engiadina, Samedan, Switzerland; Department of Environmental Systems Science, ETH, Zurich, Switzerland

Recommended Citation:
Oerlemans J.,Balasubramanian S.,Clavuot C.,et al. Brief communication: Growth and decay of an ice stupa in alpine conditions - a simple model driven by energy-flux observations over a glacier surface[J]. Cryosphere,2021-01-01,15(6)
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