SLOPE HYDROLOGY AS INFLUENCED BY THAWING OF THE ACTIVE LAYER, RESOLUTE, N.W.T.
SLOPE HYDROLOGY AS INFLUENCED BY THAWING OF THE ACTIVE LAYER, RESOLUTE, N.W.T.
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受活动层融化影响的斜坡水文，RESOLUTE，N.W.T.
DOI：
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发表时间：
1983
期刊：
影响因子：
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通讯作者：
P. Steer
中科院分区：
文献类型：
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作者：
M. Woo;P. Steer
北极高坡有一个浅的活动层，在夏季解冻不均匀。结果往往是霜台的构造与表面地形之间缺乏一致性，这对边坡水文有影响。 (1) 霜台较浅的地区有利于地表径流，而霜台较深的地区则需要较厚的饱和区来产生地表径流。不均匀的解冻深度会导致水沿着斜坡交替渗漏和重新出现。 (2)霜台的配置是高度动态的，导致活动层的储水能力每天发生变化。 (3) 局部凹陷的霜台会积聚地下水，当部分冻基因持续融化而破裂时，地下水可能会迅速释放。 (4) 地形排水分界线可能与霜冻表定义的地下排水分界线不对应，从而导致地下水横向穿过地形边界排出。这些发现表明，了解...
High arctic slopes have a shallow active layer that thaws unevenly during summer. The result is often a lack of agreement between the configuration of the frost table and the surface topography, and this has effects on the slope hydrology. (1) Areas with a shallow frost table favour surface runoff but areas with a deeper frost table require a thick zone of saturation to generate surface flow. Uneven thaw depths then cause alternating seepage and re-emergence of water down a slope. (2) The configuration of the frost table is highly dynamic, causing day to day changes in water storage capacity in the active layer. (3) A frost table with local depressions can pond up groundwater, which may be rapidly released when part of the frozen sill is breached by continual thawing. (4) The topographical drainage divide may not correspond with the subsurface drainage divide as defined by the frost table, thus allowing groundwater to drain laterally across topographical boundaries. These findings show that a knowledge of...