Published in: 09th International River Engineering Conference
COI code: IREC09_093
Paper Language: English
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Authors Stochastic modeling to Prediction of local scour depht on the basis river morphologhical changes in braided riverS Pourbakhshian - Faculty member , Department of Civil Engineering
M.R.M Tabatabai - Assistant Prof., Waters Engineering Department
M Pouraminian -
Abstract:In this paper, a new stochastic method for predicting scour hole depth in the future is presented in the braided river. The model procedure is as follows:1- It is to apply regression equation with bed height as a dependent parameter and three independent parameters of maximum daily flow, and its corresponding sediment discharge and bed slope, these equations were derived at certain points along the river cross-sections over a specific time.2- By applying observed data, sediment rating curve equation as well as a relationship between slope, water and sediment discharge were derived.3- Simulation of maximum monthly flow by ARIMA stochastic modeling.4- By substituting values obtained from step 3 into 2 and 1, respectively, river bed height was predicted along the cross-sections. - The values of the deepest bed height is selected maximum scour hole depth. Yahagi river in Japan was selected as a case study due to comprehensive and accessible data base. A comparison of observed data and predicted values indicate a seasonable agreement between them
Keywords:scour depth, braided river, stochastic modelling, ARIMA, non-linear regression
COI code: IREC09_093
how to cite to this paper:If you want to refer to this article in your research, you can easily use the following in the resources and references section:
Pourbakhshian, S; M.R.M Tabatabai & M Pouraminian, 2012, Stochastic modeling to Prediction of local scour depht on the basis river morphologhical changes in braided river, 09th International River Engineering Conference, اهواز, دانشگاه شهيد چمران اهواز, https://www.civilica.com/Paper-IREC09-IREC09_093.htmlInside the text, wherever referred to or an achievement of this article is mentioned, after mentioning the article, inside the parental, the following specifications are written.
First Time: (Pourbakhshian, S; M.R.M Tabatabai & M Pouraminian, 2012)
Second and more: (Pourbakhshian; Tabatabai & Pouraminian, 2012)
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