Effects of Parameter Uncertainty in Stream modeling

Autor: Warwick, John J., Cale, William G.
Zdroj: Journal of Environmental Engineering; June 1986, Vol. 112 Issue: 3 p479-489, 11p
Abstrakt: The effect of input parameter uncertainty on model output uncertainty was investigated using Monte Carlo simulation techniques. The mathematical model selected for investigation was a one‐dimensional, steady state, uniform flow expression which includes longitudinal dispersion. Hydraulic input parameters (flow rate, velocity, and longitudinal dispersion) were assumed to be constant with respect to both time and space. Uncertainty in these hydraulic parameters, which results from instream measurement error, was characterized with normal distributions. First‐order reaction rate uncertainty was assigned a bounded uniform distribution to signify a general knowledge of an expected range for highly reactive and relatively inert organic priority pollutants. In addition, the impact of inadequate pollutant loading characterization was investigated.
Databáze: Supplemental Index