A statistical analysis of the amplitude and phase of earth polar shift in time-frequency domain

Citation
Xz. Ke et al., A statistical analysis of the amplitude and phase of earth polar shift in time-frequency domain, CHIN ASTR A, 25(3), 2001, pp. 364-370
Citations number
9
Categorie Soggetti
Space Sciences
Journal title
CHINESE ASTRONOMY AND ASTROPHYSICS
ISSN journal
02751062 → ACNP
Volume
25
Issue
3
Year of publication
2001
Pages
364 - 370
Database
ISI
SICI code
0275-1062(200107/09)25:3<364:ASAOTA>2.0.ZU;2-8
Abstract
Close relationships appear to exist between various periodic variations of polar shift and many phenomena on the earth, including earthquakes. In this paper, we apply complex wavelet transform to the study of the polar shift. We derive and analyse the logarithmic amplitude and phase diagrams of the complex wavelet transform. The results show that there are some periodic va riations both in the modulus of the polar shift and in its complex wavelet transform.