Transport of large woody debris in the presence of obstacles

被引：79

作者：

Bocchiola, D. ^{[1
]}

Rulli, M. C. ^{[1
]}

Rosso, R. ^{[1
]}

机构：

[1] Politecn Milan, Dept Hydrol Rds Environm & Surveying Engn, I-20133 Milan, Italy

来源：

GEOMORPHOLOGY | 2006年 / 76卷 / 1-2期

关键词：

large woody debris; wood transport; wood trapping; wood jams;

D O I：

10.1016/j.geomorph.2005.08.016

中图分类号：

P9 [自然地理学];

学科分类号：

0705 ; 070501 ;

摘要：

Flume experiments were carried out to investigate the motion of large woody debris (LWD) in rivers as influenced by the presence of obstacles. Non-rooted, defoliated LWD was modelled by placing properly scaled wooden dowels placed into controlled water flow. Obstacles were represented by wooden rods randomly placed into the flume with a specified probability distribution. The results provide the probability of lodging of the dowels and statistics of the distance travelled. Their relationships with flow rate and depth, dowel length and spatial density of the obstacles is explored. This yields a general theoretical framework to approach LWD transport in rivers by combining random factors with deterministic dimensionless variables. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：166 / 178

页数：13

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