Modelling solute transport in a small stream using discus

Stephen George Wallis; R Manson

Modelling solute transport in a small stream using discus

Stephen George Wallis, R Manson

Research output: Contribution to journal › Article › peer-review

Abstract

This paper describes the main features of the DISCUS model for one-dimensional advection-dispersion computations in rivers, and describes its application to a short reach of The Murray Burn (a small stream in Edinburgh). DISCUS was calibrated using tracer data and an optimisation technique that uses a genetic algorithm. The optimised dispersion coefficients were found to increase from 0.25 to 2 m²/s in the flow range 16-261 1/s. The model was validated using tracer data not used in the calibration stage. It appears that transient storage does not play a major role in the transport of solutes in the reach that was modeled.

Original language	English
Pages (from-to)	501-515
Number of pages	15
Journal	Acta Geophysica Polonica
Volume	53
Issue number	4
Publication status	Published - 2005

Keywords

DISCUS
Dispersion coefficients
Numerical modelling
Solute transport
Streams

Cite this

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AB - This paper describes the main features of the DISCUS model for one-dimensional advection-dispersion computations in rivers, and describes its application to a short reach of The Murray Burn (a small stream in Edinburgh). DISCUS was calibrated using tracer data and an optimisation technique that uses a genetic algorithm. The optimised dispersion coefficients were found to increase from 0.25 to 2 m2/s in the flow range 16-261 1/s. The model was validated using tracer data not used in the calibration stage. It appears that transient storage does not play a major role in the transport of solutes in the reach that was modeled.

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KW - Numerical modelling

KW - Solute transport

KW - Streams

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JO - Acta Geophysica Polonica

JF - Acta Geophysica Polonica

IS - 4

ER -

Modelling solute transport in a small stream using discus

Abstract

Keywords

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