A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Origin of Step-Pool Systems in Mountain Streams
Mountain streams very often present a step-pool aspect. Antidune formation alone; dispersion and sorting theory or velocity reversal as advocated for the origin of riffle-pool sequences do not explain how steps and pools form. Experiments have been conducted to clarify their origin. It was found that the step-pool aspect appears after high flows had deformed the bed. During the presented tests a self armoring process occurred which resulted in a stabilization of the bed. When coarsening of the top layer was little classic antidunes resulted. An important coarsening was accompanied by a structuring of the bed into roughness elements whose spacing did correspond to maximum flow resistance. The substantial increase in resistance was an essential factor in bed-stabilization.
Origin of Step-Pool Systems in Mountain Streams
Mountain streams very often present a step-pool aspect. Antidune formation alone; dispersion and sorting theory or velocity reversal as advocated for the origin of riffle-pool sequences do not explain how steps and pools form. Experiments have been conducted to clarify their origin. It was found that the step-pool aspect appears after high flows had deformed the bed. During the presented tests a self armoring process occurred which resulted in a stabilization of the bed. When coarsening of the top layer was little classic antidunes resulted. An important coarsening was accompanied by a structuring of the bed into roughness elements whose spacing did correspond to maximum flow resistance. The substantial increase in resistance was an essential factor in bed-stabilization.
Origin of Step-Pool Systems in Mountain Streams
Whittaker, Jeffrey G. (author) / Jaeggi, Martin N. R. (author)
Journal of the Hydraulics Division ; 108 ; 758-773
2021-01-01
161982-01-01 pages
Article (Journal)
Electronic Resource
Unknown
| British Library Conference Proceedings | 1999
Geometric Characteristics of Step-Pool Streams
| ASCE | 2000
Step-Pool Streams: An Adjustment to Maximum Flow Resistance
| British Library Conference Proceedings | 1994
Prediction of Step-Pool Development Model in Mountain Rivers
| British Library Conference Proceedings | 2013
Restoration of an incised mountain stream using artificial step-pool system
| Taylor & Francis Verlag | 2010