Impact of luxuriant aquatic plants on thermal convection in a closed water body

The attenuation of heat flux at the water surface with aquatic plants was examined by hydraulic experiments to consider the influence of aquatic plants on the magnitude of thermal disturbance in the closed water body. First of all, the experiment measuring temperatures on surface of leaf revealed th...

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Bibliographic Details
Published in:Paddy and water environment 2009-09, Vol.7 (3), p.187-195
Main Authors: Hamagami, Kunihiko, Lap, Bui Quoc, Mori, Ken, Hirai, Yasumaru
Format: Article
Language:English
Subjects:
Agriculture
Aquatic plants
Biomedical and Life Sciences
Ecotoxicology
Fluctuations
Freshwater
Geoecology/Natural Processes
Hydrogeology
Hydrology/Water Resources
Lakes
Leaves
Life Sciences
Plants
Reservoirs
Soil Science & Conservation
Temperature measurement
Thermal conductivity
Thermodynamics
Water bodies
Water quality
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Summary:The attenuation of heat flux at the water surface with aquatic plants was examined by hydraulic experiments to consider the influence of aquatic plants on the magnitude of thermal disturbance in the closed water body. First of all, the experiment measuring temperatures on surface of leaf revealed the thermal conductivity of the leaf which is peculiar physicality of each aquatic plant. Then, the hydraulic experiment examined attenuation of the underwater illuminance and the heat flux in the covered part which depending on the kind and the luxuriant density of the aquatic plants. As the result, it is clarified that the attenuation rate of the illuminance is large in the plant with a thick leaf, and that the heat flux at the water surface and the developmental velocity of the mixed layer decreased when the luxuriant density of the aquatic plants increased.
ISSN:1611-2490
1611-2504
DOI:10.1007/s10333-009-0161-2