Analysis of multifrequency effects in oscillations of the Earth’s pole

Analysis of multifrequency effects in oscillations of the Earth’s pole

A least-squares analysis of measurements of the Earth-rotation parameters is used to interpolate these data in order to redict the polar motion using a basic mathematical model that includes two frequencies: the Chandler and annual frequencies. A model taking into account the oscillations induced by...

Full description

Saved in:
Bibliographic Details
Published in:Astronomy reports Vol. 51; no. 5; pp. 421 - 427
Main Authors: Akulenko, L D, Kumakshev, S A, Markov, Yu G, Rykhlova, L V
Format: Journal Article
Language:English
Published: Heidelberg Springer Nature B.V 01-05-2007
Subjects:
Comparative analysis
Mathematical models
Studies
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A least-squares analysis of measurements of the Earth-rotation parameters is used to interpolate these data in order to redict the polar motion using a basic mathematical model that includes two frequencies: the Chandler and annual frequencies. A model taking into account the oscillations induced by the influence of the Moon is considered. The manifestation of high-frequency lunar oscillations in the beat period is demonstrated, together with the feasibility of interpolating these oscillations over short time intervals. A comparative analysis of models taking into account the monthly and bi-weekly frequencies is presented. A reasonable model explaining anomalous phenomena in the six-year beating is proposed.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ObjectType-Article-1
ObjectType-Feature-2
ISSN:1063-7729
1562-6881
DOI:10.1134/S1063772907050083