From the GCRS to the ITRS

  • Michael Soffel
  • Ralf Langhans
Part of the Astronomy and Astrophysics Library book series (AAL)


Polar motion means motion of the Earth’s rotation axis with respect to the Earth’s surface. The possibility for such a motion of the Earth’s rotation axis was first suggested by Leonhard Euler in 1765. It should reflect itself in elevation variations of the pole with a period of about 10 months. The observational verification by means of latitude variations, however, remained unsuccessful for a long time.


Polar Motion International VLBI Service Chandler Wobble Latitude Variation IERS Convention 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Michael Soffel
    • 1
  • Ralf Langhans
    • 1
  1. 1.Institute for Planetary GeodesyDresden Technical University Lohrmann ObservatoryDresdenGermany

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