Faculty of Civil and Geodetic Engineering, Ljubljana (FGGLJ)
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Modeling of vertical gravity gradient for purposes of gravimetric surveyMedved, Klemen, 1974- ...The knowledge of the vertical gradient of the gravity field is of great importance in gravimetry and consequently in geodesy, since the gravity acceleration measured with the instrument must be ... reduced to a stabilized point. We can model vertical gravity gradient by using normal gravity field and different digital terrain models. In this research, we used an approach that belongs to the group of “forward modeling” methods and differs from the known and used vertical gravity gradient modeling procedures, as it does not contain data about the Earth's gravity field. We created various combinations of models from which we calculate the vertical gravity gradients. For all calculations, we assumed a constant density of topographic masses above the ellipsoid and included the effect of the Earth's curvatures, while using a square to determine the area of calculation and division into zones, all with the aim of improving calculation speed. In our approach, we model the gravitational influence of the topographic masses as the summation of the topographic masses between the ellipsoid and the geoid and the topographic mass between the geoid and the physical Earth surface, using the rectangular prism as the elementary body. Based on the deviations between the measured and modeled values, we were able to perform analyzes and statistical evaluations of the results. This allows us to determine the optimal model and data selection criteria for modeling vertical gravity gradients.Type of material - conference contribution ; adult, seriousPublish date - 2023Language - englishCOBISS.SI-ID - 173203971
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Medved, Klemen, 1974- | 92015 |
Koler, Božo | 07531 |
Naod, Sofija | ![]() |
Odalović, Oleg R. | ![]() |
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