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 …

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.

Nov 14, 2025 · GEOIDs are numeric codes that uniquely identify all administrative/legal and statistical geographic areas for which the Census Bureau tabulates data. From Alaska, the …

This irregular shape is called "the geoid," a surface which defines zero elevation. Using complex math and gravity readings on land, surveyors extend this imaginary line through the continents.

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 …

4 days ago · Geoid and reference ellipsoids The earth is an oblate spheroid, with the minor axis 1/300th shorter than major axis. But the earth also has an irregular undulating surface that …

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.

Apr 11, 2023 · 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 …

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.

Geoid is an open access dataverse of the entire Earth that mediates high-resolution geospatial data in a transparent manner.