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constant geopotential or isosurfaces of the geopotential are called equigeopotential surfaces (sometimes abbreviated as geop), also known as geopotential...

surface normal vector is everywhere parallel to gravity, as in an equigeopotential surface. More generally, something that is vertical can be drawn from...

horizontal datum for the chart. However, it is not necessarily an equigeopotential (a water "level surface"): the chart datum is tilted across smaller...

spheroid is WGS 84. The reference spheroid is then used to create an equigeopotential geoid to vertically map the Earth. A geoid represents the general shape...

external forcings (such as wind), water level tends to conform to an equigeopotential surface. Water level (device), device utilizing the surface of liquid...

position: depth, height, altitude, elevation, etc. Points lying on an equigeopotential surface are said to be on the same vertical level, as in a water level...

perpendicular and bubble levels are parallel to the geoid. Being an equigeopotential means the geoid corresponds to the free surface of water at rest (if...

are referenced to Earth's mean sea level, taking its best-fitting equigeopotential as a reference surface or vertical datum. In SI units, a geopotential...

proportional to the geopotential, it remains constant over a given equigeopotential surface. Therefore, dynamic height is the most appropriate height measure...

as a specific crater for the reference meridian or the best-fitting equigeopotential as zero-level surface. The longitude systems of most of those bodies...

geoid and close to it, but lacking the physical interpretation of an equigeopotential surface. The geoid undulation N {\displaystyle N} with respect to the...

(unit: m2 s−2) and not metric. The reference surface is the geoid, an equigeopotential surface approximating the mean sea level as described above. For normal...

Earth's rotation), the corresponding geopotential isosurface (the equigeopotential) that best fits mean sea level is called the geoid. Contour line Isopotential...

horizontal datum for the chart. However, it is not necessarily an equigeopotential (a water "level surface"): the chart datum is tilted across smaller...

planetary scale, the surface of an undisturbed liquid tends to conform to equigeopotential surfaces; for example, mean sea level follows approximately the geoid...