The European Space Agency’s ACES mission could ultimately pave the way for a global network of atomic clocks that make these measurements far more accurate.

To create a standard zero point, geodesists create a model of Earth known as a geoid. Every point on the surface of this lumpy, potato-shaped model experiences the same gravity, which means that ...

The geometric heights obtained by GNSS/leveling in benchmarks allow users to have the distance between the reference ellipsoid and the geoid surface, i.e., the geoid undulation or geoid height. This ...

bringing low-density material closer to the surface and causing the formation of the gravity anomaly we see today. These mantle plumes are likely responsible for the Indian Ocean Geoid Low, as they ...

can be obtained from the wide-swath data of the surface water and ocean topography (SWOT) project. The distance between two points used to calculate geoid gradients from SSH data significantly ...

A geoid is a theoretical representation of the Earth in which the surface matches the average sea level, without winds, tides, or currents, as if the planet were a perfect sphere of still water.

2.2. Data Acquisition The geoid is defined as an equipotential surface of the Earth’s gravity field which coincides with the mean level of the oceans at rest, extended under the continents [8]. Its ...

Abstract: The orthometric height variation is evident through changes in the geoid and surface vertical displacements. Hydrological mass change can induce variations in geoid height and surface ...