An analytical model for stream sediment transport: application to Murray and Murrumbidgee river reaches, Australia

Abstract

Abstract:The mechanisms controlling the¯ow of sediment in streams can be very complex and dicult to model with accuracy. Furthermore, data associated with the dominant sediment transport processes are often scarce. In this paper, we propose a model for the transport of suspended sediment in single stream reaches that permits a characterization of the dynamics of sediment sources and sinks, and routes concentrations through a stream network. We present a closed form, physically based, one-dimensional model that incorporates sediment advection, deposition, resuspension and lateral sources along a river reach. Data requirements for the model are modest, with parsimonious model structure involving only a few parameters. Thus, the model is relatively easy to calibrate and implement. An application of the model is illustrated using turbidity and¯ow data from two single reaches of the Murray and Murrumbidgee rivers in south-eastern Australia.

Nehi̇rlerde Sedi̇ment Mi̇ktarinin Beli̇rlenmesi̇nde Ampi̇ri̇k Modelleme Tekni̇kleri̇ni̇n Değerlendi̇ri̇lmesi̇

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