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is a computer system that allows for visualizing, manipulating, capturing, and storage of data with associated attributes. GIS offers better understanding of patterns and relationships of the landscape at different scales. Tools inside the GIS allow for manipulation of data for spatial analysis or
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USGS (United States
Geologic Survey) is developing a 3D Elevation Program (3DEP) to keep up with growing needs for high quality topographic data. 3DEP is a collection of enhanced elevation data in the form of high quality LiDAR data over the conterminous United States, Hawaii, and the U.S.
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as the highest point of the landing area. It is often measured in feet and can be found in approach charts of the aerodrome. It is not to be confused with terms such as the
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territories. There are three bare earth DEM layers in 3DEP which are nationally seamless at the resolution of 1/3, 1, and 2 arcseconds.
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Elevation is not to be confused with the distance from the center of the Earth. Due to the
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Processed LiDAR point cloud showing not only elevation, but heights of features as well.
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294:(DEM) are commonly used to represent the surface (topography) of a place, through a
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457:. Montreal, Canada: International Civic Aviation Organisation. 1951. p. 9.
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is used for points above the surface, such as an aircraft in flight or a
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of the Earth's surface, of which approximately 71% is covered with water
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is mainly used when referring to points on the Earth's surface, while
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above or below a fixed reference point, most commonly a reference
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Height of a geographic location above a fixed reference point
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Heightmap of Earth's surface (including water and ice) in
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have, respectively, the largest elevation and the largest
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399:, a superseded United States vertical datum, (NGVD 29)
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Downloadable ETOPO5 Raw Data
Database (5 minute grid)
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Downloadable ETOPO2 Raw Data
Database (2 minute grid)
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NGVD 29 to NAVD 88 online elevation converter @ NGS
376:List of the highest major summits of North America
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302:are another way to represent terrain in GIS.
571:Path’s Elevation Profile using Google Earth
606:Geographical terminology in mountaineering
140:Sign at 8,000 feet (2,438 m) in the
282:used to depict elevation, often through
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26:For broader coverage of this topic, see
533:United States Geological Survey website
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114:is used for points below the surface.
516:U.S. National Geodetic Survey website
391:North American Vertical Datum of 1988
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383:, German vertical datum, literally:
361:List of European cities by elevation
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366:List of highest mountains on Earth
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371:List of highest towns by country
567:Find the elevation of any place
494:from the original on 2018-06-24
464:from the original on 2021-05-07
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86:Geodetic datum § Vertical datum
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298:(grid) dataset of elevations.
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538:Geographical Survey Institute
484:"The National Map: Elevation"
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357:, or the adiabatic lapse rate
288:Geographic Information System
256:geographic information system
156:Vertical distance comparison
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430:Vertical pressure variation
325:(NAP), Dutch vertical datum
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268:equirectangular projection
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21:Elevation (disambiguation)
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482:Survey, U.S. Geological.
316:Amsterdam Ordnance Datum
292:digital elevation models
142:San Bernardino Mountains
521:Geodetic Glossary @ NGS
397:Sea Level Datum of 1929
385:standard elevation zero
323:Normaal Amsterdams Peil
420:Topographic prominence
300:Digital terrain models
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177:In aviation, the term
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415:Topographic isolation
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217:), showing elevation.
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278:is the main type of
19:For other uses, see
183:aerodrome elevation
146:southern California
101:geopotential height
596:Physical geography
410:Physical geography
405:Orthometric height
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248:in the foreground.
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185:is defined by the
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64:mathematical model
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611:Vertical position
350:Hypsometric tints
329:Elevation profile
276:topographical map
242:Cape of Good Hope
121:, the summits of
28:Vertical position
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381:Normalhöhennull
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510:External links
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238:Cape Peninsula
236:, showing the
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108:in orbit, and
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232:Elevation by
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496:. Retrieved
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466:. Retrieved
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393:, (NAVD 88)
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259:cartography.
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246:South Africa
197:Maps and GIS
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88:). The term
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228:Image over
193:or height.
591:Topography
580:Categories
498:2017-02-24
468:2020-12-19
451:AERODROMES
436:References
425:Topography
355:Lapse rate
205:Part of a
164:Elevation
133:distance.
131:geocentric
127:Chimborazo
106:spacecraft
47:geographic
601:Surveying
346:, general
211:Haleakala
179:elevation
166:histogram
90:elevation
72:sea level
43:elevation
558:Archived
546:Archived
492:Archived
459:Archived
310:See also
191:altitude
173:Aviation
95:altitude
51:location
586:Geodesy
387:, (NHN)
339:GTOPO30
334:Geodesy
290:(GIS),
286:. In a
254:GIS or
226:Landsat
82:surface
66:of the
54:is its
344:Height
320:a.k.a.
296:raster
215:Hawaii
148:(2009)
74:as an
56:height
462:(PDF)
455:(PDF)
111:depth
84:(see
68:Earth
60:geoid
45:of a
240:and
234:NASA
230:SRTM
187:ICAO
125:and
62:, a
41:The
280:map
209:of
181:or
144:of
98:or
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318:,
274:A
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213:(
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
