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Modelling of solute transport in rivers under different fflow rates: A case study without transient storage

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Języki publikacji
EN
Abstrakty
EN
A methodology to derive solute transport models at any flow rate is presented. The novelty of the proposed approach lies in the assessment of uncertainty of predictions that incorporate parameterisation based on flow rate. A simple treatment of un certainty takes in to account hetero- scedastic modelling errors related to tracer experiments performed over a range of flow rates, as well as the uncertainty of the observed flow rates themselves. The proposed approach is illustrated using two models for the transport of a conservative solute: a physically based, deterministic, advection-dispersion model (ADE), and a stochastic, transfer function based, active mixing volume model (AMV). For both models the uncertainty of any parameter increases with increasing flow rate (reflecting the heteroscedastic treatment of modelling errors at different observed flow rates), but in contrast the uncertainty of travel time, computed from the predicted model parameters, was found to decrease with increasing flow rate.
Czasopismo
Rocznik
Strony
98--125
Opis fizyczny
Bibliogr. 38 poz.
Twórcy
autor
autor
Bibliografia
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  • Smith, P., K. Beven, J. Tawn, S. Blazkova, and L. Merta (2006), Dischargedependent pollutant dispersion in rivers: Estimation of aggregated dead zone parameters with surrogate data, Water Resour. Res. 42, W04412, DOI:10.1029/2005WR004008.
  • Smith, P., K.J. Beven, and J.A. Tawn (2008), Informal likelihood measures in model assessment: Theoretic development and investigation, Adv. Water Resour. 31, 8, 1087-1100, DOI: 10.1016/j.advwatres.2008.04.012.
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Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BSL1-0025-0012
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