Study on the simulation of transparency of Lake Taihu under different hydrodynamic conditions

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	Study on the simulation of transparency of Lake Taihu under different hydrodynamic conditions
	Pang Yong; Li Yiping; Luo Liancong
刊名	SCIENCE IN CHINA SERIES D-EARTH SCIENCES
	2006
卷号	49 期号:4 页码:162-175
关键词	transparency suspended solid hydrodynamic sediment suspension model
ISSN号	1006-9313
英文摘要	It was indicated in this study that there were negative relations between the concentrations of suspended solid (SS) and transparency according to the analysis of measured data of Lake Taihu. Their relations in pervious studies were reviewed, which showed that the changes of transparency in Lake Taihu could be reflected by simulating suspended solid concentration (SSC). Measured data showed that the changes of SSC with wind speed were similar at different water depths. SSC increased with the increasing of wind speed. Both wave and lake current of Lake Taihu had positive relations with SSC. However, wave was the main factor affecting sediment suspension, while flow took the second place. In this study, a numerical model coupling lake current, wave and SSC of Lake Taihu was developed. In the SS model, the combined effects of wave and current were included. The amounts of suspended and deposited sediments near the lake bed surface layer were treated separately. The stochastic characteristics of turbulent flow pulsation near lake beds were also considered, and the start-up conditions of sediment suspension were introduced to the model. The model elucidated the mutual exchange processes between sediment particles in SS and active sediments within and on the bed surface layer. Simulated results showed that lake current had relatively significant effects on the SSC at littoral areas of Lake Taihu, while SSC at the central area of the lake was mainly influenced by wave. The changes of transparency with SSC were simulated for Lake Taihu using this model. Calculated results were validated by measured data with good fitness, which indicated that the model is basically suitable for the simulation and prediction of transparency of Lake Taihu.
公开日期	2012-03-08
内容类型	期刊论文
源URL	[http://159.226.73.51/handle/332005/2993]
专题	南京地理与湖泊研究所_湖泊室
推荐引用方式 GB/T 7714	Pang Yong,Li Yiping,Luo Liancong. Study on the simulation of transparency of Lake Taihu under different hydrodynamic conditions[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2006,49(4):162-175.
APA	Pang Yong,Li Yiping,&Luo Liancong.(2006).Study on the simulation of transparency of Lake Taihu under different hydrodynamic conditions.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,49(4),162-175.
MLA	Pang Yong,et al."Study on the simulation of transparency of Lake Taihu under different hydrodynamic conditions".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 49.4(2006):162-175.