Polar motion of the Earth is the motion of the Earth's rotational axis relative to its crust.: 1  This is measured with respect to a reference frame in...

The Polar Express is a 2004 American animated adventure film directed by Robert Zemeckis, who co-wrote the screenplay with William Broyles Jr., based...

introduction of the polar system was the study of circular and orbital motion. Polar coordinates are most appropriate in any context where the phenomenon...

also induce small changes. These subjects are covered in the article Polar motion. The mass distribution of the Earth is not spherically symmetric, and...

Geodetic Association in 1899 to study variations in latitude caused by polar motion, precession, or "wobble" of the Earth's axis. In 1891, at the meeting...

to the science. Geodynamical phenomena, including crustal motion, tides, and polar motion, can be studied by designing global and national control networks...

(UT as formerly computed), UT1 (UT0 corrected for polar motion) and UT2 (UT0 corrected for polar motion and seasonal variation). UT1 was the version sufficient...

Polar wander is the motion of a pole in relation to some reference frame. It can be used, for example, to measure the degree to which Earth's magnetic...

Measurement of geodynamical phenomena, such as crustal dynamics and polar motion: 4 : 1  Satellite geodetic data and methods can be applied to diverse...

years, so that the total polar motion varies with a period of about 7 years. The Chandler wobble is an example of the kind of motion that can occur for a...