Vertical datum

Vertical datums in Europe

In geodesy, surveying, hydrography and navigation, vertical datum or altimetric datum is a reference coordinate surface used for vertical positions, such as the elevations of Earth-bound features (terrain, bathymetry, water level, and built structures) and altitudes of satellite orbits and in aviation. In planetary science, vertical datums are also known as zero-elevation surface[1] or zero-level reference.[2]

Commonly adopted criteria for a vertical datum include the following approaches:

In the United States, prominent vertical datums in use by professionals include the National Geodetic Vertical Datum of 1929 and the North American Vertical Datum of 1988.

  1. ^ Smith, David E.; Zuber, Maria T.; Solomon, Sean C.; Phillips, Roger J.; Head, James W.; Garvin, James B.; Banerdt, W. Bruce; Muhleman, Duane O.; Pettengill, Gordon H.; Neumann, Gregory A.; Lemoine, Frank G.; Abshire, James B.; Aharonson, Oded; David, C.; Hauck, Steven A.; Ivanov, Anton B.; McGovern, Patrick J.; Zwally, H. Jay; Duxbury, Thomas C. (1999-05-28). "The Global Topography of Mars and Implications for Surface Evolution". Science. 284 (5419). American Association for the Advancement of Science (AAAS): 1495–1503. Bibcode:1999Sci...284.1495S. doi:10.1126/science.284.5419.1495. ISSN 0036-8075. PMID 10348732.
  2. ^ Smith, David E.; Zuber, Maria T. (1998-12-15). "The relationship between MOLA northern hemisphere topography and the 6.1-Mbar atmospheric pressure surface of Mars". Geophysical Research Letters. 25 (24). American Geophysical Union (AGU): 4397–4400. Bibcode:1998GeoRL..25.4397S. doi:10.1029/1998gl900085. ISSN 0094-8276. S2CID 28320895.

Vertical datum

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