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    Author(s): Erkan Istanbulluoglu; David G. Tarboton; Robert T. Pack; Charles H. Luce
    Date: 2003
    Source: Water Resources Research. 39(4): 1103-1117.
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (350 B)

    Description

    We have conducted surveys of gullies that developed in a small, steep watershed in the Idaho Batholith after a severe wildfire followed by intense precipitation. We measured gully length and cross sections to estimate the volumes of sediment loss due to gully formation. These volume estimates are assumed to provide an estimate of sediment transport capacity at each survey cross section from the single gully-forming thunderstorm. Sediment transport models commonly relate transport capacity to overland flow shear stress, which is related to runoff rate, slope, and drainage area. We have estimated the runoff rate and duration associated with the gully-forming event and used the sediment volume measurements to calibrate a general physically based sediment transport equation in this steep, high shear stress environment.

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    Citation

    Istanbulluoglu, Erkan; Tarboton, David G.; Pack, Robert T.; Luce, Charles H. 2003. A sediment transport model for incision of gullies on steep topography. Water Resources Research. 39(4): 1103-1117.

    Keywords

    gully erosion, sediment transport, landscape evolution

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