Annualmeeting:2017 CSDMS meeting-072
Browse abstracts
Probabilistic Sediment Continuity Equation with No Active Layer
[[Image:|300px|right|link=File:]]It is necessary to understand the morphodynamic evolution of an erodible bed because of its application in a wide range of natural and environmental systems. There are two different approaches to this end: one is classical district approach which divides the bed deposit to two different layers. The particles in the topmost layer which is called active layer have a finite probability for getting entrained in the bedload and all particles in the layer below active layer which is substrate has zero probability to get interact with sediment transport. There are some limitations in this approach. For example the particles in active layer are the only particles which are involved in sediment transport and the statistic nature of entrainment and deposition of particles has been neglected. To overcome these kinds of limitations the new probabilistic approach has been introduced that we are considering in this research which is based on this fact that all particles in a bed deposit are able to be entrained into bedlod. Our aim in this research is to develop a numerical model for probabilistic sediment mass conservation equations and validate our results with experimental data that are available from Wong and parker experiments in university of Minnesota. We have applied this model for a lower regime plane bed with quasi-steady approximation. For the model validation with experimental data for tracer dispersal we have implemented the elevation specific equation of conservation of tracer stones in uniform sediment.
