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Activation and Degeneration of Turbidity Currents

by Muneo Hirano, Kyushu Univ, Fukuoka, Japan,
Kesayoshi Hadano, Kyushu Univ, Fukuoka, Japan,
Juichiro Akiyama, Kyushu Univ, Fukuoka, Japan,
Takashi Saitou, Kyushu Univ, Fukuoka, Japan,



Document Type: Proceeding Paper

Part of: Hydraulics/Hydrology of Arid Lands (H?AL)

Abstract:

Flow properties of the front of a turbidity current are investigated using the two layers model which takes into account of pick up and deposition of sediment. The amount of pick up rate was estimated through laboratory experiments. Governing equations of the flow thickness, density and velocity of the head of turbidity currents are derived by means of the characteristic curve method. From inspection of the resultant equations, division of progress and decay of turbidity currents is obtained.

Subject Headings: Turbidity | Sediment transport | Density currents | Fluid flow | Water flow | Suspended sediment | Fluid mechanics

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