United States of America by the General Adjustment of 1929. Originally known as Sea Level Datum of 1929, NGVD 29 was determined and published by the United...

of the North American Datum of 1988. It superseded the National Geodetic Vertical Datum of 1929 (NGVD 29), previously known as the Sea Level Datum of...

Vertical Datum of 1929 and the North American Vertical Datum of 1988. In common usage, elevations are often cited in height above sea level, although...

physical survey marks that deteriorate over time. Altitude Geodesy Sea Level Datum of 1929 Topographic elevation Topography Reference ellipsoid Geoid Attribution:...

mathematical model of the Earth's sea level as an equipotential gravitational surface (see Geodetic datum § Vertical datum). The term elevation is mainly...

American Datum (NAD) is the horizontal datum now used to define the geodetic network in North America. A datum is a formal description of the shape of the...

measurement resulted from the Sea Level Datum of 1929. A matter of some contention arose after the Great Depression over the heights of Elbert and its neighbor...

standard origin, such as mean sea level (MSL). Since the rise of the global positioning system (GPS), the ellipsoid and datum WGS 84 it uses has supplanted...

S. state of Montana. Maps indicate the peak is listed only by the elevation of 9,996 ft (3,047 m) according to the Sea Level Datum of 1929, however the...

Between 1901 and 2018, average global sea level rose by 15–25 cm (6–10 in), an average of 1–2 mm (0.039–0.079 in) per year. This rate accelerated to 4...

applying space geodesy and terrestrial geodetic techniques, and relying on datums and coordinate systems. The job titles are geodesist and geodetic surveyor...

continental drift. The development of ETRS89 is related to the global ITRS geodetic datum, in which the representation of the continental drift is balanced...

latitude/longitude if the datum is the North American Datum of 1983 is denoted by 'GCS North American 1983'. On the GRS 80 or WGS 84 spheroid at sea level at the Equator...

("European Datum 1950", EPSG:4230) is a geodetic datum which was defined after World War II for the international connection of geodetic networks. Some of the...

Northwest Summit (7,686 ft or 2,343 m) These elevations are based on Sea Level Datum of 1929 and are taken from the Mount Daniels 7.5 minute topographic map...

The South American Datum (SAD) is a regional historical geodetic datum for South America. The most common version was established in 1969 (SAD69), as...

defines an Earth-centered, Earth-fixed coordinate system and a geodetic datum, and also describes the associated Earth Gravitational Model (EGM) and World...

ECEF datum transformation Archived March 22, 2007, at the Wayback Machine Notes on converting ECEF coordinates to WGS-84 datum Datum Transformations of GPS...

position reported in a modern datum usually cannot be misunderstood as using an old datum, and vice versa – provided the datums use different MGRS lettering...

Commonly an ellipsoidal model is part of a more encompassing geodetic datum. For example, the older ED-50 (European Datum 1950) is based on the Hayford or...

mean sea level is called ocean surface topography. If the continental land masses were crisscrossed by a series of tunnels or canals, the sea level in those...

WGS 84 Zone 26N," is defined by a choice of map projection (with specific parameters), a choice of geodetic datum to bind the coordinate system to real locations...

of Islamic Architecture. 1 (2): 325–346. doi:10.1386/ijia.1.2.325_1. Wolfgang Luef (April 2006). "Weltbauen gegen den Untergang" (in German). Datum....

the OSGB36 datum (Ordnance Survey Great Britain 1936, based on the Airy 1830 ellipsoid), and was introduced after the retriangulation of 1936–1962.[citation...

a public registry of geodetic datums, spatial reference systems, Earth ellipsoids, coordinate transformations and related units of measurement, originated...

adjustment from the National Geodetic Vertical Datum of 1929 (NGVD 29) to the North American Vertical Datum of 1988 (NAVD 88). For further information, please...

equatorial bulge is greater than that of the north, which is corroborated by the South Pole's sea level being lower than that of the north. A pear-shaped Earth...

choice of Earth ellipsoid, horizontal datum, map projection (except in the geographic coordinate system), origin point, and unit of measure. Thousands of coordinate...

the WGS 1984 Datum and is based on lines of longitude (LONG) and latitude (LAT). It is intended to provide an integrated common frame of reference for...

elevation above or below sea level is useful. Regardless of the model, any of these geocentric radii falls between the polar minimum of about 6,357 km and the...