Lake circulation and sediment transport in Lake Myvatn
Lake circulation and sediment transport in Lake Myvatn
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DOI：
10.1023/b:aeco.0000032049.94886.5a
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发表时间：
2004-01-01
期刊：
影响因子：
1.8
通讯作者：
Myer, EM
中科院分区：
文献类型：
--
作者：
Kjaran, SP;H贸lm, SL;Myer, EM
米瓦顿湖的湖泊环流和泥沙输运已使用AQUASEA，由Vatnascort咨询工程师开发的数值模型进行了计算。建模的目的是计算由于采矿造成的湖泊水深变化而引起的湖泊内沉积物输运的变化。该模型采用Galerkin有限元法，由流体动力学模型和输运-弥散模型组成。水流模型基于浅水方程和波动方程。输运模型是基于悬浮泥沙的质量守恒。该模型是根据1992年夏季进行的测量进行校准。这些测量包括水位、流速、波高和悬浮泥沙浓度。经过校准后，该模型在不同的采矿情景下运行，以确定其对湖泊沉积物迁移的影响。
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.