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Mathematical models and computer programmes for the investigation of hydrophysical processes in Lake Shira
Belolipetskii, V.M.; Genova, S.N.; Gavrilova, L.V.; Kompaniets, L.A. (2002). Mathematical models and computer programmes for the investigation of hydrophysical processes in Lake Shira. Aquat. Ecol. 36(2): 143-152
In: Aquatic Ecology. Springer: Dordrecht; London; Boston. ISSN 1386-2588; e-ISSN 1573-5125, meer
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| Trefwoorden |
Direction > Wind direction
PNE, Russia, Siberia
Properties > Chemical properties > Salinity
Properties > Physical properties > Thermodynamic properties > Temperature
Simulation
Stratification
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| Auteurs | | Top |
- Belolipetskii, V.M.
- Genova, S.N.
- Gavrilova, L.V.
- Kompaniets, L.A.
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| Abstract |
Physical processes determine to great extent the habitat of hydrobionts, as well as the transfer and sedimentation of substances, the intensity of pollution and rate of natural purification of water bodies. Mathematical models of different levels of complexity, developed to investigate hydrophysical processes in lakes, are discussed in this paper. The numerical algorithms and computer programmes described can be used to determine the influence of the morphometric characteristics and weather on the temperature regime of Lake Shira (Khakasia, Siberia) and the pattern of the wind currents. Examples of calculating the temperature regime in the context of a one- dimensional model and of calculating the parameters of wind currents in the water body of a simple geometrical form are given. The study suggests that the pattern of wind currents in Lake Shira is significantly affected by the density stratification, which depends not only on temperature but also on salinity. In order to construct a realistic pattern of currents a 3-D computer model of Lake Shira must be developed and used to estimate the validity of the two-dimensional and one-dimensional models. The present research can be further developed by extending the obtained algorithms to three-dimensional problems, taking into account the heat exchange, salinity and the geometry (bathymetric contours) of the water body. Calculations can be made for Lake Shira and the obtained data used in biophysical models. |
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