Estimation of optimal quantitative parameters of selected input data used in local quasigeoid modelling by the GGI method

Abstract

The analyses performed in this study relate to the method of quasigeoid modelling which uses the geophysical gravity data inversion technique (GGI method). The purpose of the analyses was to estimate the optimal values of quantitative parameters of selected input data used in the calculations. In particular, the following parameters were investigated: extents of a digital elevation model and the Moho depth model, the extent of the area covered by gravity data and density of gravity data. In order to perform the analyses, a series of local quasigeoid models was determined with different values of the above-mentioned parameters. The optimal values of the parameters were subsequently estimated based on the analyses of changes of quasigeoid models.

Keywords::

• local quasigeoid modelling
• gravity inversion
• geodetic application of the geophysical techniques
• geopotential model
• disturbing potential