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  • Geoid - Wikipedia
    The geoid ( ˈdʒiː ɔɪd JEE-oyd) is the shape that the ocean surface would take under the influence of the gravity of Earth, including gravitational attraction and Earth's rotation, if other influences such as winds and tides were absent
  • What is a Geoid? Why do we use it and where does its shape come from?
    The geoid is an imaginary sea level surface that undulates (has a wavy surface) over all of the earth; it isn’t just for the oceanic areas, it also extends through the land masses
  • Geoid | Definition Examples | Britannica
    Geoid, model of Earth’s size and shape that coincides with mean sea level over the oceans and continues in continental areas as an imaginary sea-level surface It is everywhere perpendicular to the pull of gravity and approximates the shape of a regular oblate spheroid (i e , a flattened sphere)
  • What is the geoid? - National Oceanic and Atmospheric Administration
    Scematic diagram showing some of the “level surfaces” of the Earth, including the geoid, and their relation to the Earth’s crust and local mean sea level
  • What Is Geoid In Geography? Understanding the Earth’s Shape
    Geoid is an imaginary surface that is used as a reference level for measuring elevations on the Earth’s surface It is used in physical geography and geodesy to determine the height of land and sea levels
  • GEOID Definition Meaning - Merriam-Webster
    The meaning of GEOID is the surface within or around the earth that is everywhere normal to the direction of gravity and coincides with mean sea level in the oceans
  • How gravity shapes Earth - Visuals by earth online
    The geoid is the surface of an ideal global ocean in the absence of tides and currents, shaped only by gravity The colours in the image represent deviations in height from an ideal geoid
  • 13. Geoids | The Nature of Geographic Information
    Geodesists define the Earth's surface as a surface that closely approximates global mean sea level, but across which gravity is everywhere equal They refer to this shape as the geoid
  • What Are Ellipsoid, Geoid, and Orthometric Heights?
    A geoid is a more accurate geometric representation of the Earth that accounts for its irregular and undulating surface Geoid models are region-specific grids that allow conversions from the ellipsoid to national vertical datums
  • Geoid (geology) | Research Starters - EBSCO
    The geoid is a concept in geology that represents the shape of the Earth's mean sea level across the globe, extending over oceans and under continents It is not a perfect ellipsoid; rather, it diverges from such a shape by as much as one hundred meters, reflecting variations in gravitational forces due to the Earth's internal structure





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