The geoid-to-quasigeoid difference using an arbitrary gravity reduction model |
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| Authors: | Lars E Sj?berg |
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| Institution: | 1. Division of Geodesy and Geoinformatics, Royal Institute of Technology, SE-100 44, Stockholm, Sweden
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| Abstract: | Recently it was proved that the classical formula for computing the geoid to quasigeoid separation (GQS) by the Bouguer gravity anomaly needs a topographic correction. Here we generalize the modelling of the GQS not only to Bouguer types of anomalies, but also to arbitrary reductions of topographic gravity. Of particular interest for practical applications should be isostatic and Helmert types of reductions, which provide smaller and smoother components, more suitable for interpolation and calculation, than the Bouguer reduction. |
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