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  1. Geodetic datum - Wikipedia

    en.wikipedia.org/wiki/Geodetic_datum

    6 days ago · The North American Datum of 1983 (NAD 83) is "The horizontal control datum for the United States, Canada, Mexico, and Central America, based on a geocentric origin and the Geodetic Reference System 1980 . "This datum, designated as NAD 83 ...is based on the adjustment of 250,000 points including 600 satellite Doppler stations which constrain the system to a geocentric origin."

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    When was NAVD 88 adopted?

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  3. Circle of latitude - Wikipedia

    en.wikipedia.org/wiki/Circle_of_latitude

    European Datum 1950: SAD69: South American Datum 1969: GRS 80: Geodetic Reference System 1980: ISO 6709: Geographic point coord. 1983: NAD 83: North American Datum 1983: WGS 84: World Geodetic System 1984: NAVD 88: N. American Vertical Datum 1988: ETRS89: European Terrestrial Ref. Sys. 1989: GCJ-02: Chinese obfuscated datum 2002: Geo URI ...

  4. North - Wikipedia

    en.wikipedia.org/wiki/North

    May 23, 2020 · North is one of the four compass points or cardinal directions. It is the opposite of south and is perpendicular to East and West. North is a noun, adjective, or adverb indicating direction or geography.

  5. List of the highest major summits of Colorado - Wikipedia

    en.wikipedia.org/wiki/Highest_mountain_peaks_of...

    May 24, 2020 · There are three ultra-prominent summits in Colorado. All elevations in this article include an elevation adjustment from the National Geodetic Vertical Datum of 1929 ( NGVD 29) to the North American Vertical Datum of 1988 ( NAVD 88 ).

  6. National Geodetic Survey - Survey Marks and Datasheets

    www.ngs.noaa.gov/datasheets/index.shtml

    May 07, 2020 · Tidal Bench Marks. Tidal bench mark also refers to a stable object containing a marked point of known elevation with respect to a datum. Some tidal bench marks have known elevations referenced to both geodetic datums (e.g. North American Vertical Datum of 1988 or NAVD 88) and tidal datums (e.g. Mean Sea Level or MSL).

  7. Fourteener - Wikipedia

    en.wikipedia.org/wiki/Fourteener

    May 26, 2020 · In the mountaineering parlance of the Western United States, a fourteener is a mountain peak with an elevation of at least 14,000 feet (4267 meters). There are 96 fourteeners in the United States, all west of the Mississippi River .

  8. May 13, 2020 · NOAA’s National Geodetic Survey (NGS) provides the framework for all positioning activities in the Nation. The foundational elements of latitude, longitude, elevation, and shoreline information impact a wide range of important activities.

  9. Georgia – Wikipedia

    sv.wikipedia.org/wiki/Georgia

    May 17, 2020 · Georgia gränsar i söder mot Florida, i öst till Atlanten och South Carolina i norr mot North Carolina och Tennessee och i väst mot Alabama. Den norra delen av delstaten ligger i Blue Ridge Mountains som är en del av Appalacherna. Den högsta punkten är Brasstown Bald som är 1458 m.

    • Engelska
    • Atlanta
    • Atlanta
    • USA
  10. 全球定位系统 - 维基百科,自由的百科全书

    zh.wikipedia.org/wiki/全球定位系统

    2 days ago · 1988 北美纵向测量系统 ( 英语 : North American Vertical Datum of 1988 ) NAVD88 1989 欧洲地球参考系统 ( 英语 : European Terrestrial Reference System 1989 )

    • 運行中
    • 美國
  11. 2 days ago · Minnesota became a state on May 11, 1858. It was the 32nd state in the United States of America. The name Minnesota is Dakota (a Native American language) for "sky-tinted water". Eagle Mountain is the highest point in Minnesota. The state bird is the Common Loon. Minnesota has a humid continental climate. The winters in Minnesota are long and ...

    • Minnesotan
    • Seal