Lake circulation and sediment transport in Lake Myvatn

被引:18
作者
Kjaran, SP [1 ]
Hólm, SL [1 ]
Myer, EM [1 ]
机构
[1] Vatnaskil Consulting Engineers, IS-108 Reykjavik, Iceland
关键词
AQUASEA; diatomite; numerical modelling; suspended sediment; Vatnaskil;
D O I
10.1023/B:AECO.0000032049.94886.5a
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
Lake circulation and sediment transport in Lake Myvatn have been calculated using AQUASEA, a numerical model developed by Vatnaskil Consulting Engineers. The goal of the modelling was to calculate changes in sediment transport within the lake due to changes in lake bathymetry caused by diatomite mining. The model uses the Galerkin finite element method and consists of a hydrodynamic flow model and a transport-dispersion model. The flow model is based on the shallow water equations and the wave equation. The transport model is based on the conservation of mass for suspended sediment. The model was calibrated against measurements performed during the summer of 1992. These included measurements of water elevation, current velocity, wave height, and concentration of suspended sediment. After calibration, the model was run for different mining scenarios to determine their impact on the sediment transport in the lake.
引用
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页码:145 / 162
页数:18
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