| 11. | These deflection values were integrated into astrogeodetic geoid charts referred to these national datums.
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| 12. | The geoid is essentially the figure of the Earth abstracted from its topographic features.
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| 13. | His goal was to establish the exact shape of the geoid and the Earth.
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| 14. | The difference between the ocean surface and the actual geoid gives ocean surface topography.
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| 15. | The Bessel ellipsoid fits especially well to the geoid curvature of Europe and Eurasia.
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| 16. | The uncertainty is due to the geoid.
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| 17. | The geometrical separation between the geoid and the reference ellipsoid is called the geoidal undulation.
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| 18. | Geoid uncertainty casts doubt upon the accuracy claimed by both the 1999 and 2005 surveys.
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| 19. | The geopotential surface called the geoid is one definition of the shape of the Earth.
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| 20. | The permanent deviation between the geoid and mean sea level is called ocean surface topography.
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