Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufm.p51c1463m&link_type=abstract
American Geophysical Union, Fall Meeting 2010, abstract #P51C-1463
Astronomy and Astrophysics
Astronomy
[5770] Planetary Sciences: Fluid Planets / Tidal Forces
Scientific paper
Astronomical cycles of the orbital motion of the Earth and Moon correspond well to Earth’s hydrosphere tidal cycles and the cycles of seismicity of the Earth and Moon. Considering the Earth and Moon as a binary planet system, we find that orbital dynamics of this system is responsible for a tidal force with periods 206 days and 412 days. These periodic variations are the most regular source of long-period tides in the hydrosphere and solid earth. Additionally, these variations are the most powerful trigger source for the seismicity of the Earth and Moon. If we take into account that the Earth’s center of gravity is at a distance of about 5000 km from the Earth-Moon barycenter and, hence, the inner solid core of the Earth is experiencing a periodic gravitational influence from the Sun and the Moon, we may suggest that the tidal force, with period 412 days, has to be considered as an important source for the pole forced oscillation.
Avsyuk Y.
Maslov Lev A.
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