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  2. Sea level - Wikipedia

    en.wikipedia.org/wiki/Sea_level

    The 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 past with the level today. Earth's radius at sea level is 6,378.137 km (3,963.191 mi) at the equator.

  3. List of highest large cities - Wikipedia

    en.wikipedia.org/wiki/List_of_highest_large_cities

    This list of the highest cities in the world includes only cities with a population greater than 100,000 inhabitants and an average height above sea level over 2,000 metres (6,600 ft). This list is incomplete ; you can help by adding missing items .

  4. List of countries by average elevation - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by...

    This is a list of countries and territories by their average elevation above sea level based on the data published by Central Intelligence Agency, [1] unless another source is cited. The list includes sovereign states and self-governing dependent territories based upon the ISO standard ISO 3166-1.

  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. List of elevation extremes by country - Wikipedia

    en.wikipedia.org/wiki/List_of_elevation_extremes...

    sea level 63 m 207 ft Bahrain: Mountain of Smoke (Jabal ad Dukhan) 134 m 440 ft Persian Gulf: sea level 122 m 400 ft Bangladesh: Saka Haphong: 1063 m 3,488 ft Bay of Bengal: sea level 1063 m 3,488 ft Barbados: Mount Hillaby: 340 m 1,115 ft North Atlantic Ocean: sea level 336 m 1,102 ft Belarus: Dzyarzhynskaya Hara: 345 m 1,132 ft Neman: 90 m 295 ft

  7. List of cities by elevation - Wikipedia

    en.wikipedia.org/wiki/List_of_cities_by_elevation

    The following is a list of the world's major cities (either capitals, more than one million inhabitants or an elevation of over 1,000 m [3,300 ft]) by elevation.In addition, the country, continental region, latitude and longitude are shown for all cities listed.

  8. List of highest mountains on Earth - Wikipedia

    en.wikipedia.org/wiki/List_of_highest_mountains...

    The bases of mountain islands are below sea level, and given this consideration Mauna Kea (4,207 m (13,802 ft) above sea level) is the world's tallest mountain and volcano, rising about 10,203 m (33,474 ft) from the Pacific Ocean floor.

  9. Orthometric height - Wikipedia

    en.wikipedia.org/wiki/Orthometric_height

    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 ...