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ANALYSIS OF GEODETIC DATA FOR INVESTIGATING POLAR MOTION

TS. Tsenkov, S. Gospodinov

First published: 2008DOI pendingView metrics

Abstract

Theoretical and experimental investigations have been made to study the polar motion based on the IERS (International Earth Rotation Service) solution. A set of 9 mathematical models is proposed to examine the time series of polar motion. We have proved by statistical tests that the ARMA (2,1) model is the “best” one of the proposed set of competing models. Estimates have been obtained of the spectral characteristics by investigating the cyclic polar motion variations. Criteria are applied to assess the adequacy of the models.

Publication details

Title
ANALYSIS OF GEODETIC DATA FOR INVESTIGATING POLAR MOTION
Authors
TS. Tsenkov, S. Gospodinov
Proceedings
8th International Scientific Conference - SGEM2008
Publisher
SGEM Scientific GeoConference
Year
2008
Pages
445-454
SWS Citekey
Tsenkov2008445454
ISSN
1314-2704
ISBN
954-918181-2
Language
en
Publication type
Conference Paper
Keywords
AutocorrelationMean squared errorPolar coordinates time seriesPolar motionSpectral analysisSpectral characteristics
References3

  1. Gross, R.S., Vondrak, J. 1999. Astrometric and space-geodetic observations of polar wander. Geoph. Res. Lett. V. 26 No 14, p. 2085.

  2. Kosek, W. 1995. Time Variable Band Pass Filter Spectra of Real and ComplexValued Polar Motion Series, Artificial Satellites Planetary Geodesy No 24, Vol. 30, No 1,27-43.

  3. Zhou Y, Zheng D., Yu N., Wu H. 2000. Excitation of annual polar motion by atmosphere and ocean Chinese Science Bulletin. Vol. 45, No 2

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