DOI: 10.5194/hess-21-5503-2017
Scopus记录号: 2-s2.0-85034026343
论文题名: Liquid water infiltration into a layered snowpack: Evaluation of a 3-D water transport model with laboratory experiments
作者: Hirashima H ; , Avanzi F ; , Yamaguchi S
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2017
卷: 21, 期: 11 起始页码: 5503
结束页码: 5515
语种: 英语
Scopus关键词: Groundwater flow
; Infiltration
; Liquids
; Ponding
; Snow
; Water supply systems
; Capillary barriers
; Laboratory experiments
; Preferential flows
; Relevant features
; Runoff forecasting
; Three dimensional simulations
; Water content profiles
; Water transport models
; Phase interfaces
; experiment
; forecasting method
; hydrological modeling
; infiltration
; laboratory method
; preferential flow
; runoff
; simulation
; snow cover
; snowmelt
; snowpack
; three-dimensional modeling
; water content
英文摘要: The heterogeneous movement of liquid water through the snowpack during precipitation and snowmelt leads to complex liquid water distributions that are important for avalanche and runoff forecasting. We reproduced the formation of capillary barriers and the development of preferential flow through snow using a three-dimensional water transport model, which was then validated using laboratory experiments of liquid water infiltration into layered, initially dry snow. Three-dimensional simulations assumed the same column shape and size, grain size, snow density, and water input rate as the laboratory experiments. Model evaluation focused on the timing of water movement, thickness of the upper layer affected by ponding, water content profiles and wet snow fraction. Simulation results showed that the model reconstructs relevant features of capillary barriers, including ponding in the upper layer, preferential infiltration far from the interface, and the timing of liquid water arrival at the snow base. In contrast, the area of preferential flow paths was usually underestimated and consequently the averaged water content in areas characterized by preferential flow paths was also underestimated. Improving the representation of preferential infiltration into initially dry snow is necessary to reproduce the transition from a dry-snow-dominant condition to a wet-snow-dominant one, especially in long-period simulations. © 2017 Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79007
Appears in Collections: 气候变化事实与影响
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作者单位: Snow and Ice Research Center, National Research Institute for Earth Science and Disaster Resilience, Suyoshi-machi, Nagaoka-shi, Niigata-ken, Japan; Department of Civil and Environmental Engineering, Politecnico di Milano, Milan, Italy; Department of Civil and Environmental Engineering, University of California, Berkeley, Berkeley, United States
Recommended Citation:
Hirashima H,, Avanzi F,, Yamaguchi S. Liquid water infiltration into a layered snowpack: Evaluation of a 3-D water transport model with laboratory experiments[J]. Hydrology and Earth System Sciences,2017-01-01,21(11)