publication . Article . Other literature type . 2015

Earth orientation and its excitations by atmosphere, oceans, and geomagnetic jerks

Vondrák, J.; Ron, C.;
Open Access English
  • Published: 01 Jan 2015 Journal: Serbian Astronomical Journal (issn: 1450-698X, eissn: 1820-9289, Copyright policy)
  • Publisher: Astronomical Observatory, Department of Astronomy, Belgrade
Abstract
In addition to torques exerted by the Moon, Sun, and planets, changes of the Earth orientation parameters (EOP) are known to be caused also by excitations by the atmosphere and oceans. Recently appeared studies, hinting that geomagnetic jerks (GMJ, rapid changes of geomagnetic field) might be associated with sudden changes of phase and amplitude of EOP (Holme and de Viron 2005, 2013, Gibert and Le Mouёl 2008, Malkin 2013). We (Ron et al. 2015) used additional excitations applied at the epochs of GMJ to derive its influence on motion of the spin axis of the Earth in space (precession-nutation). We demonstrated that this effect, if combined with the influence of t...
Subjects
arXiv: Physics::GeophysicsPhysics::Space PhysicsAstrophysics::Earth and Planetary Astrophysics
free text keywords: Earth, reference systems, time, Astronomy, QB1-991, Atmosphere, Earth's magnetic field, Amplitude, Earth Orientation Parameters, Numerical integration, Planet, Celestial pole, Interferometry, Physics
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publication . Article . Other literature type . 2015

Earth orientation and its excitations by atmosphere, oceans, and geomagnetic jerks

Vondrák, J.; Ron, C.;