Construction of the field of anomalies of the geoid's gravity and height by the fast Fourier transform
The geoid heights and the gravity anomaly in the Black sea are computed from altimetry data of ERS-1, ERS-2, TOPEX/POSEIDON, GFO, ENVISAT, JASON-1. The geoid heights and the gravity anomaly in the Black sea are computed at the grid points 1' x 1' by FFT method.