Formation process of depositional landform over a permeable flat plain

M. Ogasawara, Masato Sekine

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    The formation process of depositional landform over a one-dimensional permeable flat plain was investigated numerically in this paper. In such a process, a water exchange between a surface flow and a subsurface flow is important to be taken into account. The governing equations of the flows are one-dimensional shallow water equations for surface flow, and two-dimensional Richards' equation for subsurface flow. As a result of this study, the following two processes were confirmed: (a) a front of surface flow migrates a little in the downstream direction due to the loss of surface-flow discharge, and the thickness of the depositional landform increases; (b) the front migrates with relatively high speed due to the recovery of surface-flow discharge, and the depositional landform spread in the downstream direction.

    Original languageEnglish
    Title of host publicationRiver, Coastal and Estuarine Morphodynamics: RCEM 2007 - Proceedings of the 5th IAHR Symposium on River, Coastal and Estuarine Morphodynamics
    Pages885-890
    Number of pages6
    Volume2
    Publication statusPublished - 2008
    Event5th IAHR-Symposium on River, Coastal and Estuarine Morphodynamics, RCEM 2007 - Enschede
    Duration: 2007 Sep 172007 Sep 21

    Other

    Other5th IAHR-Symposium on River, Coastal and Estuarine Morphodynamics, RCEM 2007
    CityEnschede
    Period07/9/1707/9/21

    Fingerprint

    Landforms
    landform
    subsurface flow
    Richards equation
    shallow-water equation
    water exchange
    Water
    plain
    Recovery

    ASJC Scopus subject areas

    • Ecology
    • Environmental Engineering

    Cite this

    Ogasawara, M., & Sekine, M. (2008). Formation process of depositional landform over a permeable flat plain. In River, Coastal and Estuarine Morphodynamics: RCEM 2007 - Proceedings of the 5th IAHR Symposium on River, Coastal and Estuarine Morphodynamics (Vol. 2, pp. 885-890)

    Formation process of depositional landform over a permeable flat plain. / Ogasawara, M.; Sekine, Masato.

    River, Coastal and Estuarine Morphodynamics: RCEM 2007 - Proceedings of the 5th IAHR Symposium on River, Coastal and Estuarine Morphodynamics. Vol. 2 2008. p. 885-890.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Ogasawara, M & Sekine, M 2008, Formation process of depositional landform over a permeable flat plain. in River, Coastal and Estuarine Morphodynamics: RCEM 2007 - Proceedings of the 5th IAHR Symposium on River, Coastal and Estuarine Morphodynamics. vol. 2, pp. 885-890, 5th IAHR-Symposium on River, Coastal and Estuarine Morphodynamics, RCEM 2007, Enschede, 07/9/17.
    Ogasawara M, Sekine M. Formation process of depositional landform over a permeable flat plain. In River, Coastal and Estuarine Morphodynamics: RCEM 2007 - Proceedings of the 5th IAHR Symposium on River, Coastal and Estuarine Morphodynamics. Vol. 2. 2008. p. 885-890
    Ogasawara, M. ; Sekine, Masato. / Formation process of depositional landform over a permeable flat plain. River, Coastal and Estuarine Morphodynamics: RCEM 2007 - Proceedings of the 5th IAHR Symposium on River, Coastal and Estuarine Morphodynamics. Vol. 2 2008. pp. 885-890
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