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  2. Wikipedia:Obtaining geographic coordinates - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Obtaining...

    Move a marker on a Google Maps map (map or satellite view) and get Latitude, Longitude and Elevation for the location. User interface in German language. NASA World Wind: Maps: Open source 3D interactive world viewer. See also: online version. Licensing: NOSA. Bing Maps: Maps: Provides geographical coordinates of a location when a "Pushpin" has ...

  3. Bing Maps - Wikipedia

    en.wikipedia.org/wiki/Bing_Maps

    Bing Maps (previously Live Search Maps, Windows Live Maps, Windows Live Local, and MSN Virtual Earth) is a web mapping service provided as a part of Microsoft's Bing suite of search engines and powered by the Bing Maps Platform framework which also support Bing Maps for Enterprise APIs and Azure Maps APIs.

  4. List of online map services - Wikipedia

    en.wikipedia.org/wiki/List_of_online_map_services

    Apple Maps - covers the whole country; Bing Maps – covers the whole country; Google Maps - covers the whole country; Libre Map Project; MapQuest - covers the whole country; The National Map by the United States Geological Survey.

  5. Height above mean sea level - Wikipedia

    en.wikipedia.org/wiki/Height_above_mean_sea_level

    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 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 measurement periods.

  6. National Geodetic Vertical Datum of 1929 - Wikipedia

    en.wikipedia.org/wiki/National_Geodetic_Vertical...

    The datum was defined by the observed heights of mean sea level at the 26 tide gauges and by the set of elevations of all bench marks resulting from the adjustment of observations. The adjustment required a total of 66,315 miles (106,724 km) of levelling with 246 closed circuits and 25 circuits at sea level.

  7. Hypsometer - Wikipedia

    en.wikipedia.org/wiki/Hypsometer

    Image from "Maps and survey" (1913) by Hinks, Arthur R. ... A hypsometer is an instrument for measuring height or elevation. Two different principles may be used: ...

  8. Topographic prominence - Wikipedia

    en.wikipedia.org/wiki/Topographic_prominence

    When the key col for a peak is close to the peak itself, prominence is easily computed by hand using a topographic map. However, when the key col is far away, or when one wants to calculate the prominence of many peaks at once, software can apply surface network modeling to a digital elevation model to find exact or approximate key cols. [8] [9]

  9. Hypsometry - Wikipedia

    en.wikipedia.org/wiki/Hypsometry

    Hypsometry (from Ancient Greek ὕψος (húpsos) 'height' and μέτρον (métron) 'measure') [1] [2] is the measurement of the elevation and depth of features of Earth's surface relative to mean sea level. [3] On Earth, the elevations can take on either positive or negative (below sea level) values.