Development and stability of preferential flow paths in a layered snowpack
Development and stability of preferential flow paths in a layered snowpack
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层状积雪中优先流路的发展和稳定性
DOI：
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
M. Schneebeli
中科院分区：
文献类型：
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作者：
M. Schneebeli
水在融化积雪中的优先流动路径对于液相中的能量传递、溶质运移、湿雪变形和积雪的稳定性是重要的。虽然这种现象的存在是公认的，但很少进行定量分析。使用多种染料示踪剂应用评价流路的发展和稳定性。四种不同颜色的染料被应用，并通过在不同时间挖掘积雪来观察流动路径。用数码相机拍摄这些轮廓的图像，并对图像进行顺序分析。利用丽丝胺的荧光特性进行了一些初步的实验。观察到的染料图案表明，流动路径随时间和空间不稳定。可以得出结论，优先流路的形成是高度依赖于边界条件，并没有简单的规则可以给他们的形成和行为。
Preferential flow paths of water in a melting snow cover are important for energy transfer in the liquid phase, solute transport, wet snow metamorphosis, and stability of the snowpack. Although the exist ence of this phenomenon is well recognized, few quantitative investiga tions have been conducted. The development and stability of flow paths was evaluated using multiple dye tracer application. Four differently colored dyes were applied and the flow path observed by excavating the snowpack at different times. Images of these profiles were captured with a digital camera, and the images sequentially analyzed. Some preliminary experiments using the fluorescent properties of lissamine were done. The observed dye patterns show that the flow paths were not stable over time and space. It can be concluded that the formation of preferential flow paths is highly dependent on the boundary conditions and no simple rule can be given for their formation and behavior.