RESUSPENSION OF FLUID MUD AT THE CENTRAL AREA OF LAKE KASUMIGAURA

Autor:	Tadaharu Ishikawa, Tomonori Nagamine, Takaaki Uda, Makoto Umeda, You Nagahiro
Rok vydání:	2001
Předmět:	Entrainment (hydrodynamics) Hydrology Turbulence Organic Chemistry Wind wave Water environment Erosion Sediment Turbidity Biochemistry Intensity (heat transfer) Geology
Zdroj:	PROCEEDINGS OF HYDRAULIC ENGINEERING. 45:1171-1176
ISSN:	1884-9172 0916-7374
DOI:	10.2208/prohe.45.1171
Popis:	Resuspension processes of bottom sediment in a lake have great influences on the water environment of the lake, since nutrients and heavy metals contained in the interstitial water are released with sediment particle. In this study, extensive field measurements have been conducted at the center of Lake Kasumigaura. From the results of the measurments, it is deduced that the major force on sediment erosion is the disturbance induced by wind waves. The relation between entrainment rates of sediment and turbulent intensity by waves has a good correlation.Parameterization of the entrainment rate is considered using variables of k-e turbulence model. In this paper, the dissipation rate e is proposed to be a suitable parameter. By using this model, time series of turbidity for 6 cases of resuspensions are reproduced relatively well.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d26bac9dd19b9899cbe64ea118f2cbe9 https://doi.org/10.2208/prohe.45.1171 Zobrazit plný text záznamu