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Astron. Astrophys. 327, 800-812 (1997)

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On atmospheric excitation of out-of-phase nutational components

S. Molodensky 1 and E. Groten 2

1 Institute of the Physics of the Earth, 123810, Bolshaja Gruzinskaja 10, Moscow, Russia
2 Institute of the Physical Geodesy, Petersenstrasse 13, D-64287 Darmstadt, Germany

Received 1 July 1996 / Accepted 12 November 1996

Abstract

A simple self-consistent model of thermal diurnal tides in the earth's atmosphere is constructed which gives the possibility to separate annual and semi-annual prograde and retrograde components. For a realistic model of the Earth the numerical estimations of atmospheric excitation of out-of-phase nutational components are obtained. It is shown that prograde annual component may be totally explained by thermal atmospheric tides; at the same time, the influence of these tides on retrograde annual component is negligible small.

Key words: reference systems

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© European Southern Observatory (ESO) 1997

Online publication: April 6, 1998
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