Set-membership approach for identification of the uncertainty in power-law relationships: The case of sediment yield

Karel J. Keesman*, Lachlan Newham, Tony Jakeman

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    Abstract

    Power laws are used to describe a large variety of natural and man-made phenomena. Consequently, they are used in a wide range of scientific research and management applications. In this paper, we focus on the identification of uncertainty bounds on a power law relationship from experimental data, using a bounded-error characterization. These bounds can subsequently be used as constraints in e.g. optimization and scenario studies. The basic so-called set-membership approach involves outlier identification and removal, feasible parameter set estimation, evaluation of the feasible model output set and tuning of the error bounds. As an example we examine scattered sediment yield versus catchment (or watershed) area data of Wasson, (1994). The key result of this is an appropriate unfalsified relationship between sediment yield and catchment area with uncertainty bounds.

    Original languageEnglish
    Title of host publicationModelling for Environment's Sake
    Subtitle of host publicationProceedings of the 5th Biennial Conference of the International Environmental Modelling and Software Society, iEMSs 2010
    Pages1719-1726
    Number of pages8
    Publication statusPublished - 2010
    Event5th Biennial Conference of the International Environmental Modelling and Software Society: Modelling for Environment's Sake, iEMSs 2010 - Ottawa, ON, Canada
    Duration: 5 Jul 20108 Jul 2010

    Publication series

    NameModelling for Environment's Sake: Proceedings of the 5th Biennial Conference of the International Environmental Modelling and Software Society, iEMSs 2010
    Volume2

    Conference

    Conference5th Biennial Conference of the International Environmental Modelling and Software Society: Modelling for Environment's Sake, iEMSs 2010
    Country/TerritoryCanada
    CityOttawa, ON
    Period5/07/108/07/10

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