Geoid Map
Geodesists devised geoids, mathematical surfaces that can be used to establish and standardize vertical (elevation) positions. A geoid subtracts out the deformation of the crust due to rock density and gravity. Different colors are used ti demonstrate the different elevations and land distortions on this map. The map above shows how different parts of the earths surface vary in elevation through the use of saturated colors of blue, green, orange, yellow, purple, and so forth.
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