Conference Proceedings

Testing Uncertainty In A Model Of Stream Bank Erosion

S Jha, AW Western, ID Rutherfurd, RB Grayson, A Zerger (ed.), RM Argent (ed.)

MODSIM 2005: INTERNATIONAL CONGRESS ON MODELLING AND SIMULATION: ADVANCES AND APPLICATIONS FOR MANAGEMENT AND DECISION MAKING | MODELLING & SIMULATION SOC AUSTRALIA & NEW ZEALAND INC | Published : 2005

Abstract

A Monte Carlo approach is used to both identify and estimate uncertainty in a cross-section-scale stream bank erosion model and to scale the results up to the reach-scale. The erosion model is based on an understanding of cross-section scale fluvial erosion and mass failure processes and a stochastic upscaling. The model input variables are divided into relatively well known and poorly known variables. Reach slope, catchment area and riparian tree density are considered to be relatively well known, while the rest of the input variables (cross-section geometry, geotechnical properties of the bank materials, riparian tree density, and bankfull flow duration) are considered poorly known. Poorly..

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