Wavelet analysis provides a new tool for studying Earth's rotation
- 18 April 1995
- journal article
- Published by American Geophysical Union (AGU) in Eos
- Vol. 76 (16) , 161-165
- https://doi.org/10.1029/95eo00084
Abstract
The solid Earth's rotation varies slightly with time due to geophysical processes that involve motions and redistributions of mass occurring on or within the Earth, as dictated by the conservation of angular momentum. In particular, these variations Δ LOD) in the atmosphere in terms of the axial atmospheric anglar momentum (AAM) are the primary cause for nontidal length‐of‐day variations on timescales of several days to several years [e.g., Rosen, 1993]. Here Δ LOD is a convenient measure of Earth's rotational speed relative to the uniform time kept by atomic clocks.Keywords
This publication has 6 references indexed in Scilit:
- Interannual variations in the Earth's polar motion for 1963–1991: Comparison with atmospheric angular momentum over 1980–1991Geophysical Research Letters, 1994
- Variations in the orientation of the EarthPublished by Wiley ,1993
- Global propagation of interannual fluctuations in atmospheric angular momentumNature, 1992
- Length-of-Day Variations Caused by El Niño-Southern Oscillation and Quasi-Biennial OscillationScience, 1989
- Atmospheric angular momentum fluctuations, length-of-day changes and polar motionProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1983
- Wave propagation and sampling theory—Part I: Complex signal and scattering in multilayered mediaGeophysics, 1982