polar motion wikipedia - EAS
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See all on Wikipediahttps://en.wikipedia.org/wiki/Polar_motionPolar motion of the Earth is the motion of the Earth's rotational axis relative to its crust. This is measured with respect to a reference frame in which the solid Earth is fixed (a so-called Earth-centered, Earth-fixed or ECEF reference frame). This variation is a few meters on the surface of the Earth. See more
Polar motion is defined relative to a conventionally defined reference axis, the CIO (Conventional International Origin), being the pole's average location over the year 1900. It consists of three major components: a free … See more
In the absence of external torques, the vector of the angular momentum M of a rotating system remains constant and is directed toward a … See more
Annual component
There is now general agreement that the annual component of polar motion is a forced motion excited predominantly by atmospheric … See more• McCarthy, Dennis D. (2000). "Polar Motion — An Overview". International Astronomical Union Colloquium. Cambridge University Press (CUP). 178: 221–236. Bibcode:2000ASPC..208..223M. doi:10.1017/s0252921100061364. ISSN 0252-9211 See more
The slow drift, about 20 m since 1900, is partly due to motions in the Earth's core and mantle, and partly to the redistribution of water mass as the Greenland ice sheet melts, and to See more
Polar motion is observed routinely by space geodesy methods such as very-long-baseline interferometry, lunar laser ranging and satellite laser ranging. The annual component is rather … See more
Wikipedia text under CC-BY-SA license- https://en.wikipedia.org/wiki/Talk:Polar_motion
Talk:Polar motion. WikiProject Geology. (Rated Start-class, Low-importance) Earth sciences portal. Polar motion is part of WikiProject Geology, an attempt at creating a standardized, …
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- https://www.britannica.com/science/polar-motion
Jul 20, 1998 · polar motion, a periodic rotation of the Earth’s spin axis about a mean axis, somewhat like the wobble of a spinning top. Slight variations in latitude and longitude result …
- https://commons.wikimedia.org/wiki/File:PolarMotion.png
Dec 07, 2010 · English: This is a graph of the polar motion as function of time. z-axis is time stated in day units. x&y-axis are stated in arcsec (0.1 arcsec result in ~3 meters on the pole). It …
Polar motion - Wikipedia @ WordDisk
https://worddisk.com/wiki/Polar_motionPolar motion of the Earth is the motion of the Earth's rotational axis relative to its crust. [2]: 1 This is measured with respect to a reference frame in which the solid Earth is fixed (a so-called …
- https://www.earthdata.nasa.gov/.../polar-motion
Pertaining to the measurement, tracking, and gravitational effects of the various phases of polar motion/variation. The Earth Observing System Data and Information System is a key core …
- https://www.wikiwand.com/sk/Central_Bureau_of_the...
Central Bureau of the International Polar Motion Service je ústredie pre medzinárodnú službu pohybu pólu, založené v roku 1895, teraz začlenené do FAGS (Federation of Astronomical …
- https://www.liquisearch.com/polar_motion
Polar motion of the Earth is the movement of the point where Earth's rotational axis intersects its surface. This is measured with respect to a reference frame in which the solid Earth is fixed (a …
- https://infogalactic.com/info/Polar_motion
Polar motion is defined relative to a conventionally defined reference axis, the CIO (Conventional International Origin), being the pole's average location over the year 1900. It consists of three …
polar motion - universalium.en-academic.com
https://universalium.en-academic.com/283687/polar_motionpolar motion. geophysics a periodic rotation of the Earth's spin axis about a mean axis, somewhat like the wobble of a spinning top. Slight variations in latitude and longitude result …
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