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Elevation histogram of the surface of the Earth – approximately 71% of the Earth's surface is covered with water. For other uses, see Elevation (disambiguation). The elevation of a geographic location is its height above a fixed reference point, often the mean sea level. Elevation, or geometric height, is mainly used when referring to points on the Earth's surface, while altitude or geopotential height is used for points above the surface, such as an aircraft in flight or a spacecraft in orbit. Image File history File links This is a lossless scalable vector image. ... Image File history File links This is a lossless scalable vector image. ... Example of a histogram of 100 normally distributed random values. ... Look up elevation in Wiktionary, the free dictionary. ... Physical map of the Earth (Medium) (Large 2 MB) Geography is the scientific study of the locational and spatial variation in both physical and human phenomena on Earth. ... The term above mean sea level (AMSL) refers to the elevation (on the ground) or altitude (in the air) of any object, relative to the average sea level. ... This article is about Earth as a planet. ... Altitude is the elevation of an object from a known level or datum. ... Geopotential height is a vertical coordinate referenced to Earths mean sea level — an adjustment to geometric height (elevation above mean sea level) using the variation of gravity with latitude and elevation. ... Look up aircraft in Wiktionary, the free dictionary. ... The Space Shuttle Discovery as seen from the International Space Station. ... Less commonly, elevation is measured using the center of the Earth as the reference point. Due to equatorial bulge, there is debate whether the summits of Mt. Everest or Chimborazo are at the higher elevation, as Chimborazo is further from the Earth's center while Mt. Everest is higher above mean sea level. An equatorial bulge is a planetological term which describes a bulge which a planet may have around its equator, distorting it into an oblate spheroid. ... “Everest” redirects here. ... The inactive stratovolcano Chimborazo is Ecuadors highest summit. ... Contents 1 Maps and GIS 2 Topography 3 See also 4 External links [edit] Maps and GIS A topographical map is the main type of map used to depict elevation, often through use of contour lines. Example of a topographic map with contour lines Part of the same map in a perspective shaded relief view illustrates how the contour lines of the original follow the terrain Topographic maps are a variety of map characterized by large-scale detail and quantitative representation of relief, usually using contour... For the acronyms, see MAP and MAPS. A map is a symbolized depiction of a space which highlights relations between components (objects, regions, themes) of that space. ... Elevation contour map A contour line shows elevation. ... In a Geographic Information System (GIS), digital elevation models (DEM) are commonly used to represent the surface (topography) of a place, through a raster (grid) dataset of elevations. Digital terrain models are another way to represent terrain in GIS. A geographic Information System (GIS) is a system for capturing, storing, analyzing and managing data and associated attributes which are spatially referenced to the earth. ... 3D rendering of a DEM of Tithonium Chasma on Mars A digital elevation model (DEM) is a digital representation of ground surface topography or terrain. ... Suppose the smiley face in the top left corner is an RGB bitmap image. ... It has been suggested that Digital elevation model be merged into this article or section. ... To determine elevation of a place, it must be surveyed, in reference to a ground control point. Geophysical survey refers to the systematic collection of geophysical data for spatial studies. ... Part of a topographic map of Haleakala (Hawaii), showing elevation. Image File history File links No higher resolution available. ... Image File history File links No higher resolution available. ... Example of a topographic map with contour lines Part of the same map in a perspective shaded relief view illustrates how the contour lines of the original follow the terrain Topographic maps are a variety of map characterized by large-scale detail and quantitative representation of relief, usually using contour... Haleakalā or East Maui Volcano is a massive shield volcano that forms more than 75% of the Hawaiian Island of Maui. ... Official language(s) English, Hawaiian Capital Honolulu Largest city Honolulu Area  Ranked 43rd  - Total 10,931 sq mi (29,311 km²)  - Width n/a miles (n/a km)  - Length 1,522 miles (2,450 km)  - % water 41. ... [edit] Topography The elevation of a mountain usually refers to its summit. The elevation of a hill also refers to the summit. A valley's elevation is usually taken from the lowest point but is often taken all over the valley. Lyskamm, 4 527 m, Pennine Alps Blue Ridge Mountains in Shenandoah national park, Virginia A mountain is a landform that extends above the surrounding terrain in a limited area. ... A topographical summit is a point on a surface which is higher in elevation than all points immediately adjacent to it. ... [edit] See also Look up elevation in Wiktionary, the free dictionary. altitude geodesy List of highest mountains List of highest towns by country physical geography summit (topography) summit eminence topographic isolation topographic prominence topographical map topography Wikipedia does not have an article with this exact name. ... Wiktionary (a portmanteau of wiki and dictionary) is a multilingual, Web-based project to create a free content dictionary, available in over 150 languages. ... Altitude is the elevation of an object from a known level or datum. ... Geodetic pillar (1855); Ostend, Belgium Archive with lithography plates for maps of Bavaria in the Landesamt für Vermessung und Geoinformation in Munich Geodesy (IPA North American English ; British, Australian English etc. ... Mount Everest, the worlds highest mountain The following is a list of the worlds 100+ highest mountains per height above sea level, all of which are located in Asia. ... This is a list of the highest settlement of each country. ... True-color image of the Earths surface and atmosphere Physical geography (also know as geosystems or physiography) is a subfield of geography that focuses on the systematic study of patterns and processes within the hydrosphere, biosphere, atmosphere, and lithosphere. ... A topographical summit is a point on a surface which is higher in elevation than all points immediately adjacent to it. ... In topography, prominence, also known as autonomous height, relative height or shoulder drop (in America) or prime factor (in Europe), is a concept used in the categorization of hills and mountains, also known as peaks. ... The topographic isolation of a summit is the minimum horizontal (great circle) distance to the nearest point of higher elevation. ... In topography, prominence, also known as autonomous height, relative height or shoulder drop (in America) or prime factor (in Europe), is a concept used in the categorization of hills and mountains, also known as peaks. ... Cartography or mapmaking (in Greek chartis = map and graphein = write) is the study and practice of making maps or globes. ... For discussion of land surfaces themselves, see Terrain. ... [edit] External links U.S. National Geodetic Survey website Geodetic Glossary @ NGS United States Geological Survey website Geographical Survey Institute Downloadable ETOPO2 Raw Data Database (2 minute grid) Downloadable ETOPO5 Raw Data Database (5 minute grid) bivouac.com Canadian Mountain Encyclopedia peakbagger.com peaklist.org peakware.com World Mountain Encyclopedia summitpost.org Categories: Geodesy | Topography | Physical geography | Surveying | Mountaineering | Length

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