Experimental analysis of size and distance of travel of unconstrained particles in interrill flow
Experimental analysis of size and distance of travel of unconstrained particles in interrill flow
复制标题
钻间流中无约束颗粒的尺寸和行进距离的实验分析
DOI：
10.1029/98wr01471
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发表时间：
1998
影响因子：
5.4
通讯作者：
S. Stromberg
中科院分区：
文献类型：
--
作者：
A. Parsons;S. Stromberg
在细沟间地表流的实验室模拟中研究了尺寸为2.88 mm至10.63 mm的颗粒的行进距离。使用的旅行距离缩放的流量和降雨能量的实验之间的差异，距离和颗粒大小之间的关系，显示了急剧减少的旅行距离与颗粒大小的增加。旅行距离是两种可能性的结果：移动的可能性和静止的可能性。在细沟间流中，前者受降雨能量控制，后者受水流能量控制。分析子集的数据，其中只有降雨或流动能量变化表明，急剧减少的行程距离与颗粒大小主要是由于流动能量的敏感性。虽然降雨能量引起的颗粒运动（夹带）确实随颗粒大小而变化，但灵敏度较低。
The travel distances of particles ranging in size from 2.88 mm to 10.63 mm were investigated in laboratory simulations of interrill overland flow. Using travel distances scaled for differences among the experiments in flow and rainfall energy, a relationship between distance traveled and particle size is obtained that shows a steep reduction in travel distance with increase in particle size. Travel distance is the outcome of two probabilities: that of moving and that of coming to rest. In interrill flow, the former is controlled by rainfall energy, but the latter is controlled by flow energy. Analysis of subsets of the data in which only rainfall or flow energy varied shows that the steep reduction in travel distance with particle size is primarily due to sensitivity to flow energy. Although particle movement (entrainment) by rainfall energy does vary with particle size, the sensitivity is less.