Modeling of the effect of flow depth on sediment discharged by rain-impacted flows from sheet and interrill erosion areas: A review

Peter Kinnell

    Research output: Contribution to journalArticle

    14 Citations (Scopus)

    Abstract

    Sediment, nutrients and pollutants discharged from sheet and interrill erosion areas by rain-impacted flows may influence water quality in streams and rivers. The depth of water on the soil surface influences the capacity of raindrop impacts to detach soil material underlying rain-impacted flows, and a number of so-called process-based and mechanistic models erroneously use equations on the basis of the effect of water depth on splash erosion to account for this effect. Also, a number of these models require complex mathematical solutions to make them operate and can only predict sediment composition and discharges well if many of their parameters are calibrated specifically to the situations where they are being applied. Experiments with rainimpacted flows, where flow depth and velocity over eroding surfaces have been controlled, have been reported in the literature and provide more appropriate equations to account for the drop size ? flow depth interactions that affect detachment and transport of particles in rain-impacted flows. There is a need to develop modeling approaches that rely on relevant data obtained under well-controlled flow conditions where flow depths and velocities are known.
    Original languageEnglish
    Pages (from-to)2567-2578
    Number of pages12
    JournalHydrological Processes
    Volume27
    Issue number18
    DOIs
    Publication statusPublished - 2013

    Fingerprint

    interrill erosion
    sheet erosion
    sediment
    modeling
    rain
    effect
    raindrop
    water depth
    soil surface
    erosion
    water quality
    pollutant
    nutrient

    Cite this

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    title = "Modeling of the effect of flow depth on sediment discharged by rain-impacted flows from sheet and interrill erosion areas: A review",
    abstract = "Sediment, nutrients and pollutants discharged from sheet and interrill erosion areas by rain-impacted flows may influence water quality in streams and rivers. The depth of water on the soil surface influences the capacity of raindrop impacts to detach soil material underlying rain-impacted flows, and a number of so-called process-based and mechanistic models erroneously use equations on the basis of the effect of water depth on splash erosion to account for this effect. Also, a number of these models require complex mathematical solutions to make them operate and can only predict sediment composition and discharges well if many of their parameters are calibrated specifically to the situations where they are being applied. Experiments with rainimpacted flows, where flow depth and velocity over eroding surfaces have been controlled, have been reported in the literature and provide more appropriate equations to account for the drop size ? flow depth interactions that affect detachment and transport of particles in rain-impacted flows. There is a need to develop modeling approaches that rely on relevant data obtained under well-controlled flow conditions where flow depths and velocities are known.",
    keywords = "Interrill erosion, Rainfall erosion, Sheet erosion",
    author = "Peter Kinnell",
    year = "2013",
    doi = "10.1002/hyp.9363",
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    pages = "2567--2578",
    journal = "Hydrological Processes",
    issn = "0885-6087",
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    Modeling of the effect of flow depth on sediment discharged by rain-impacted flows from sheet and interrill erosion areas: A review. / Kinnell, Peter.

    In: Hydrological Processes, Vol. 27, No. 18, 2013, p. 2567-2578.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Modeling of the effect of flow depth on sediment discharged by rain-impacted flows from sheet and interrill erosion areas: A review

    AU - Kinnell, Peter

    PY - 2013

    Y1 - 2013

    N2 - Sediment, nutrients and pollutants discharged from sheet and interrill erosion areas by rain-impacted flows may influence water quality in streams and rivers. The depth of water on the soil surface influences the capacity of raindrop impacts to detach soil material underlying rain-impacted flows, and a number of so-called process-based and mechanistic models erroneously use equations on the basis of the effect of water depth on splash erosion to account for this effect. Also, a number of these models require complex mathematical solutions to make them operate and can only predict sediment composition and discharges well if many of their parameters are calibrated specifically to the situations where they are being applied. Experiments with rainimpacted flows, where flow depth and velocity over eroding surfaces have been controlled, have been reported in the literature and provide more appropriate equations to account for the drop size ? flow depth interactions that affect detachment and transport of particles in rain-impacted flows. There is a need to develop modeling approaches that rely on relevant data obtained under well-controlled flow conditions where flow depths and velocities are known.

    AB - Sediment, nutrients and pollutants discharged from sheet and interrill erosion areas by rain-impacted flows may influence water quality in streams and rivers. The depth of water on the soil surface influences the capacity of raindrop impacts to detach soil material underlying rain-impacted flows, and a number of so-called process-based and mechanistic models erroneously use equations on the basis of the effect of water depth on splash erosion to account for this effect. Also, a number of these models require complex mathematical solutions to make them operate and can only predict sediment composition and discharges well if many of their parameters are calibrated specifically to the situations where they are being applied. Experiments with rainimpacted flows, where flow depth and velocity over eroding surfaces have been controlled, have been reported in the literature and provide more appropriate equations to account for the drop size ? flow depth interactions that affect detachment and transport of particles in rain-impacted flows. There is a need to develop modeling approaches that rely on relevant data obtained under well-controlled flow conditions where flow depths and velocities are known.

    KW - Interrill erosion

    KW - Rainfall erosion

    KW - Sheet erosion

    U2 - 10.1002/hyp.9363

    DO - 10.1002/hyp.9363

    M3 - Article

    VL - 27

    SP - 2567

    EP - 2578

    JO - Hydrological Processes

    JF - Hydrological Processes

    SN - 0885-6087

    IS - 18

    ER -