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Civil aircraft navigation uses specific procedures for the continuous determination of the aircraft position using the path and distance traveled in the considered time interval as calculation elements. Throughout the route, errors must be estimated that are generated by a series of parameters such as: hydrometeorological conditions, air current direction, declination, geoid parameters, the ship's nautical qualities and the response mode of the navigation equipment. The indications of the magnetic compass must be ...

The separation between the mobile plate (Phanerozoic) in south and west of the eastern European Precambrian East European Craton is the most prominent geological limit in Europe known as the Trans-European Suture Zone (TESZ) In this study we were mainly interested in a prominent segment of TESZ, known as the Tornquist -Teisseyre Area (TTZ). In this study we highlighted the TTZ area through the gradient of geoid from Romania. The geoid provides a good representation of the long wavelength characteristics of the Ear...

For the analysis of various geological featur es can be derived from minimal anomalies caused by mass distributions, we present an ex tensive geophysical re cords. It is quite clear that at this stage; on ly a comprehensive analysis of data submitted by the various branches of geology can advance our knowle dge on geological structure and causes for it. Classical correlation between gravity anomalies of sedimentary basins of major minimum and is the most common significant abnormalities that may be of this type.