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Dynamic criterion for the formation of surface water-blooms
Gao Y(高永); Liu QQ(刘青泉)
Source PublicationTHEORETICAL & APPLIED MECHANICS LETTERS
2013-07
Volume3Issue:4Pages:042003/1-042003/3
ISSN2095-0349
Abstract

Surface water-blooms (SWBs) is usually explained as a buoyant migration of blue-green algae to the water surface under the conditions of reduced turbulence. Wind-induced turbulent mixing can cause considerable heterogeneity in the vertical concentration distribution of algal cells. There exists a criterion below which cell buoyancy can overcome the turbulent mixing. Former researchers regarded a certain wind speed as this criterion, but this wind speed differs in value. In this research, we propose a new criterion, a nondimensional parameter – Entrainment number (En), which represents the ratio of the intrinsic velocity of algal cells relative to the characteristic velocity of wind-induced mixing. Observation in Taihu Lake demonstrates that this new criterion is more suitable for the description of hydrodynamic effect on the formation of surface water-blooms.

KeywordSwbs Microcystis Turbulent Mixing Wind Speed Entrainment Number
Subject Area环境流体力学
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Language英语
Funding OrganizationNational Natural Science Funds of China for Distinguished Young Scholar (10825211), “Hundred Talents Program” of the Chinese Academy of Sciences, and the National Natural Science Foundation of China(11202217)
DepartmentLMFS水环境流体力学(LEM)
Classification二类
Ranking1
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/47395
Collection流固耦合系统力学重点实验室
Corresponding AuthorLiu QQ(刘青泉)
Recommended Citation
GB/T 7714
Gao Y,Liu QQ. Dynamic criterion for the formation of surface water-blooms[J]. THEORETICAL & APPLIED MECHANICS LETTERS,2013,3(4):042003/1-042003/3
APA Gao Y,&Liu QQ.(2013).Dynamic criterion for the formation of surface water-blooms.THEORETICAL & APPLIED MECHANICS LETTERS,3(4),042003/1-042003/3.
MLA Gao Y,et al."Dynamic criterion for the formation of surface water-blooms".THEORETICAL & APPLIED MECHANICS LETTERS 3.4(2013):042003/1-042003/3.
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