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In the paper the author focuses attention on the problem of the influence of lateral density changes in topographical masses on gravity and geoidal height computation. In computing the geoidal heights, the density is usuall modelled by the mean crust density p0=2670kg.m-3. The density of water in lakes differs significantly from this value. To answer the question of how large an error can be caused...
Density decreasing inside a ground construction has an influence on the gravity obseived on the surface stations. The gravimetric monitoring contained the connection of investigated points on a hydrotechnic object to the outside located reference stations and permanent registration of gravity variations taking into account the solar and lunar tides. The basic problem in the interpretation of the results...
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