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- W1490975975 abstract "A new method to compute the transport of density in baroclinic numerical models without artificial diffusivity is presented. As a critical application, the salt intrusion into a schematic estuary of the size of the Elbe estuary is studied.The model is based on the Navier Stokes equation solved numerically by an established method in the Eulerian framework. The transport of density is computed in a Lagrangian is done in a convenient way using the computed velocities. In contrast to the established tracer particle methods, each particle represents a certain amount of water of definite properties (salinity, temperature, etc.). The mean property of any Eulerian grid cell is the average of all Lagrangian particles being in the cell. Using this concept, four types of transport can be modelled completely independent of each other: “large scale” transport by mean velocities “medium scale” displacements by turbulence buoyancy “small scale” exchange of properties by irreversible mixing. The sharp density gradient of the brackish water zone is reproduced qualitatively. Its dependence on the tide and on the fresh water input can be demonstrated, too.KeywordsUpwind SchemeDefinite PropertyElbe EstuarySalt IntrusionFresh Water InputThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves." @default.
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- W1490975975 date "1980-01-01" @default.
- W1490975975 modified "2023-10-11" @default.
- W1490975975 title "On the formation of salt wedges in estuaries" @default.
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- W1490975975 doi "https://doi.org/10.1007/978-3-642-46416-4_8" @default.
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