Sensitivity Analysis of Input Data in Surface Water Quality Models
Sensitivity Analysis of Input Data in Surface Water Quality ModelsPDF
Authors: Martin Manina and Peter Halaj
Volume/Issue: Volume 22: Issue 2
Published online: 01 Nov 2019
The article is focused on analysis of input data impact on outputs of water quality models. The authors examined the impact of roughness coefficient, both boundary and initial conditions setup on changes of outputs generated by HEC-RAS model. Simulation results have shown a various response rate of input data on simulated results. The strong impact shows roughness coefficient setup that through the value of longitudinal dispersion coefficient affects pollution transport process. Changes in boundary conditions have had less influence on outputs. Relatively strong impact shows the setup of initial state of pollution concentration along the reach mainly for the case of low gradient rivers.
Keywords: sensitivity analysis, water quality modelling, open channel, HEC-RAS
CARIBONI J. – GATELLI D. – LISKA R. – SATELLI A. 2007. The role of sensitivity analysis in ecological modelling. In Ecological Modelling 2007 203 pp. 167–182.
FISHER H.B. – LIST E.J. – KOH R.C.Y. – IMBERGER J. – BROOKS N.H. 1979. Mixing in inland and coastal waters. New York : Academic 1979 pp. 104–138.
HAMBY D.M. 2014. A review of techniques for parameter sensitivity analysis of environmental models. In Environmental Monitoring and Assessment 2014 32 pp. 135–154.
IVAN P. – MACURA V. 2014. Assessment of the quality of an aquatic habitat for Schneider in Nitrica river. In International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management SGEM vol. 1 2014 no. 3 pp. 97–103.
LEONARD B.P. 1991. The ULTIMATE conservative difference scheme applied to unsteady one-dimensional advection Computer Methods in Applied Mechanics and Engineering. 88 1991 pp. 17–74.
SOKÁČ M. – VELÍSKOVÁ Y. 2015. Dispersion coefficient sensitivity analysis on simulation results: A case study Grote Laak River. In International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management SGEM vol. 1 2015 no. 3 pp. 213–220.
USACE HEC. HEC-RAS River Analysis System User’s Manual Version 4.1. 2010 766 p.
ZHANG Z. – JOHNSON B. E. 2014. Application and Evaluation of the HEC-RAS-Nutrient Simulation Module. NSM I EMRRP-SR-47 U.S. Vicksburg : Army Engineer Research and Development Center 2014 19 p.
XU C. – HU Y. – CHANG Y. – JIANG Y. – LI X. – BU R. – HE H. 2004. Sensitivity analysis in ecological modeling Ying Yong Sheng Tai Xue Bao. vol. 15 2004 no. 6 pp. 1056–1062.