首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Flow and grainsize pattern in a sharply curved river bend
Authors:J S L J Van Alphen  P M Bloks  P Hoekstra
Abstract:The main characteristics of river flow and grainsize in a bend of the sand bedded meandering river Dommel, The Netherlands, are presented. Measurements were carried out at a relatively low discharge in a sharply curved bend following a long straight reach. In the studied bend, secondary circulation is restricted to the thalweg area; only in the downstream part of the bend it exists over the entire cross-section. Therefore, on the entire pointbar platform, which comprises the larger part of the bend, the median sedimentation diameter of the bedload material is governed by the distribution of the longitudinal components of the bed shear stress only.
Keywords:River flow  Secondary circulation  Grainsize  Bed shear stress  Meander bend
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号