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In Hong Kong, "mPD" is a surveying term meaning "metres above Principal Datum" and refers to height of 0.146 m (5.7 in) above chart datum [8] and 1.304 m (4 ft 3.3 in) below the average sea level. In France, the Marégraphe in Marseilles measures continuously the sea level since 1883 and offers the longest collated data about the sea level.
This is an accepted version of this page This is the latest accepted revision, reviewed on 12 February 2025. This is a list of countries and territories by their average elevation above sea level based on the data published by Central Intelligence Agency, unless another source is cited. The list includes sovereign states and self-governing dependent territories based upon the ISO standard ISO ...
Height above mean sea level is a reference for a measure of a location's vertical distance (height, elevation or altitude) in reference to a vertical datum based on a historic mean sea level. In geodesy, it is formalized as orthometric height. The zero level varies in different countries due to different reference points and historic ...
sea level: 28 950 ft 290 m 19 5,711 ft 1741 m Washington: Mount Rainier [85] [as] 4 ...
sea level 114 m 374 ft Guinea: Mont Nimba (Mount Richard-Molard) 1752 m 5,748 ft North Atlantic Ocean: sea level 1752 m 5,748 ft Guinea-Bissau: Dongol Rondè [11] 266 m 873 ft North Atlantic Ocean: sea level 266 m 873 ft Guyana: Mount Roraima: 2772 m 9,094 ft [u] North Atlantic Ocean: sea level 2772 m 9,094 ft Haiti: Pic la Selle: 2680 m 8,793 ft
A chart datum is the water level surface serving as origin of depths displayed on a nautical chart and for reporting and predicting tide heights. A chart datum is generally derived from some tidal phase, in which case it is also known as a tidal datum. [1] Common chart datums are lowest astronomical tide (LAT) [1] and mean lower low water (MLLW).
Height on the other hand simply means elevation of the summit above sea level. Regarding parents, the prominence parent of peak A can be found by dividing the island or region in question into territories, by tracing the runoff from the key col (mountain pass) of every peak that is more prominent than peak A. The parent is the peak whose ...
The orthometric height (symbol H) is the vertical distance along the plumb line from a point of interest to a reference surface known as the geoid, the vertical datum that approximates mean sea level. [1] [2] Orthometric height is one of the scientific formalizations of a layman's "height above sea level", along with other types of heights in ...