• Height above mean sea level is a measure of a location's vertical distance (height, elevation or altitude) in reference to a vertical datum based on a...
    6 KB (700 words) - 23:30, 20 April 2024
  • Thumbnail for Sea level
    term above sea level generally refers to the height above mean sea level (AMSL). The term APSL means above present sea level, comparing sea levels in the...
    23 KB (4,287 words) - 10:37, 13 June 2024
  • height above ground level (AGL or HAGL) is a height measured with respect to the underlying ground surface. This is as opposed to height above mean sea...
    7 KB (778 words) - 03:46, 27 November 2023
  • in contrast to mean sea-level pressure, which involves the extrapolation of pressure to sea level for locations above or below sea level. The average pressure...
    23 KB (2,418 words) - 15:14, 25 April 2024
  • direction (the plumb line direction) above or below a given vertical datum (a reference level surface, such as mean sea level). Vertical distance or vertical...
    8 KB (822 words) - 17:37, 6 April 2024
  • Thumbnail for Elevation
    location is its height above or below a fixed reference point, most commonly a reference geoid, a mathematical model of the Earth's sea level as an equipotential...
    7 KB (573 words) - 07:27, 11 February 2024
  • Thumbnail for Height
    mountain peak), then altitude (height above sea level) is called elevation. In a two-dimensional Cartesian space, height is measured along the vertical...
    8 KB (1,020 words) - 10:11, 12 March 2024
  • Thumbnail for Vertical datum
    in height above sea level, although what "sea level" actually means is a more complex issue than might at first be thought: the height of the sea surface...
    10 KB (1,461 words) - 14:11, 17 May 2024
  • Geopotential height or geopotential altitude is a vertical coordinate referenced to Earth's mean sea level (assumed zero geopotential) that represents...
    7 KB (934 words) - 03:33, 4 January 2024
  • Thumbnail for Normalhöhennull
    Normalhöhennull (category Zero-level elevation points)
    reference plane for the normal height of a topographical eminence height above mean sea level used in the 1932 German Mean Height Reference System (Deutsches...
    6 KB (569 words) - 23:49, 4 November 2023
  • that approximates mean sea level. Orthometric height is one of the scientific formalizations of a laypersons' "height above sea level", along with other...
    4 KB (525 words) - 09:30, 18 August 2023
  • Thumbnail for Density altitude
    other words, the density altitude is the air density given as a height above mean sea level. The density altitude can also be considered to be the pressure...
    10 KB (1,305 words) - 18:09, 27 May 2024
  • Thumbnail for KVLY-TV mast
    takes up 160 acres (65 ha) of land with its guy anchors. Its height above mean sea level is 2,962 feet (903 m). Some time after its completion, the Federal...
    8 KB (865 words) - 06:58, 9 June 2024
  • Thumbnail for Chart datum
    lowest astronomical tide (LAT) and mean lower low water (MLLW). In non-tidal areas, e.g. the Baltic Sea, mean sea level (MSL) is used. A chart datum is a...
    10 KB (1,156 words) - 19:47, 16 May 2024
  • of a place above or below mean sea level. Countries adopt their nearby mean sea levels as datum planes for calculations of reduced levels in their respective...
    4 KB (457 words) - 06:02, 23 May 2024
  • Thumbnail for Scale height
    decreasing exponentially with height. In Earth's atmosphere, the pressure at sea level P0 averages about 1.01×105 Pa, the mean molecular mass of dry air is...
    14 KB (1,998 words) - 07:02, 23 May 2024
  • Jessiefjellet is a mountain in Prins Karls Forland, Svalbard. It has a height above mean sea level of 1,033 with a pointed summit. It is named after Jessie Bruce...
    1 KB (111 words) - 10:10, 31 July 2023
  • Thumbnail for Albufera Natural Park
    extends over 917.1 km2, from sea level to an altitude of about 1000 height above mean sea level. It is separated from the sea by a narrow sandy coastal bar...
    45 KB (5,376 words) - 21:46, 1 March 2024
  • Thumbnail for Gwynt y Môr
    Gwynt y Môr (category Offshore wind farms in the Irish Sea)
    world. The farm has 160 wind turbines of 150 metres (490 ft) tip height above mean sea level. Planning consent for the project was granted on 3 December 2008...
    11 KB (905 words) - 17:09, 7 April 2024
  • Thumbnail for Arkona Hill
    Warszewo Hills, and is located within the Arkonian Forest Park. Its height above mean sea level is 70.3 m (230.64 ft.). Between 1899 and 1904, on the hill was...
    3 KB (192 words) - 20:57, 30 October 2023
  • Thumbnail for National Geodetic Vertical Datum of 1929
    (referenced to the new International Great Lakes Datum of 1985 local mean sea level height value), although many cities and U.S. Army Corps of Engineers "legacy"...
    4 KB (397 words) - 01:26, 19 November 2023
  • Overdrive transmission, a vehicle transmission Above Ordnance Datum, a level expressed as a height above mean sea level Adult Onset Diabetes, a metabolic disorder...
    2 KB (337 words) - 04:56, 6 June 2024
  • Thumbnail for List of tallest buildings in British Columbia
    regulations forbid any building from exceeding 200 meters (656 ft) in height above mean sea level in order to preserve sight lines out toward the Pacific Ranges...
    63 KB (2,525 words) - 02:22, 12 January 2024
  • Thumbnail for Flight level
    sea level, and therefore is not necessarily the same as the aircraft's actual altitude, either above sea level or above ground level. Flight levels are...
    26 KB (2,372 words) - 13:50, 25 May 2024
  • altimeter so that it indicates the height of an aircraft above a known reference surface. This reference can be the mean sea level pressure (QNH), the pressure...
    4 KB (466 words) - 22:10, 5 April 2024
  • Thumbnail for Wydrza Góra (Kamień County)
    Voivodeship, Poland, within the Gmina Wolin, Kamień County. Its height above mean sea level is 21 m (68.9 ft). At its northern foothill is located the village...
    3 KB (150 words) - 20:10, 13 February 2024
  • Thumbnail for Great Trigonometrical Survey
    influence of mountains on pendulums and plumb lines Refraction Height above mean sea level 1818–1823 – William Lambton 1823–1843 – Sir George Everest 1843–1861...
    13 KB (1,315 words) - 23:15, 19 April 2024
  • Thumbnail for Ordnance datum
    deriving altitudes on maps. A spot height may be expressed as above ordnance datum (AOD). Usually mean sea level (MSL) at a particular place is used...
    7 KB (777 words) - 16:41, 20 May 2024
  • Thumbnail for Height above average terrain
    of the Continental United States, Alaska and Hawaii. Above mean sea level (AMSL) Above ground level (AGL) Canadian Radio-television and Telecommunications...
    6 KB (717 words) - 03:44, 23 August 2023
  • Thumbnail for White Mountain (Wolin)
    Voivodeship, Poland, within Gmina Międzyzdroje, Kamień County. Its height above mean sea level is 65 m (213.26 ft). To the southeast from the hill is located...
    3 KB (148 words) - 11:03, 16 October 2023