TY - GEN
T1 - Formation process of depositional landform over a permeable flat plain
AU - Ogasawara, M.
AU - Sekine, M.
PY - 2008/12/1
Y1 - 2008/12/1
N2 - 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.
AB - 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.
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M3 - Conference contribution
AN - SCOPUS:84858120069
SN - 9780415454711
T3 - River, Coastal and Estuarine Morphodynamics: RCEM 2007 - Proceedings of the 5th IAHR Symposium on River, Coastal and Estuarine Morphodynamics
SP - 885
EP - 890
BT - River, Coastal and Estuarine Morphodynamics
T2 - 5th IAHR-Symposium on River, Coastal and Estuarine Morphodynamics, RCEM 2007
Y2 - 17 September 2007 through 21 September 2007
ER -