At present, high-accuracy gravimetry is one of the efficient methods for prospecting the Earth’s interior. New possibilities were opened by the advent of superconducting gravimeters. However, for interpreting the gravity measurements, it is vital that a number of additional factors are known. Among these factors is the effect of oceanic loading.

In the Russian Arctic, this effect attains 4–6 μGal, which makes up quite a significant fraction of the observed lunar and solar tide.

For calculating this effect, we have developed the ATLANTIDA3.0 program. The distinctive feature of this program is that it allows the geophysicist to take into account the dissipation of tidal energy in the calculation and to apply different models of the Earth’s crust and upper mantle (to date, there are two such models). Due to the fact that all the procedures of interpolation and all decompositions are, in fact, carried out beforehand, the program, as a rule, provides the faster computations than its analogs. This is important in the calculations aimed at obtaining the estimates on a large regional or global grid.

About 77% of the ocean loading effect parameters calculated by the ATLANTIDA 3.0 program turned out to be closer to the observations than the estimates predicted by the known LOAD97 program from ETERNA3.3 package.

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