JOURNAL BROWSE
Search
Advanced SearchSearch Tips
A Least Square Fit Analysis on the Earth's Polar Motion Time Series: Implication against Smylie's Conjecture
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
  • Journal title : Geophysics and Geophysical Exploration
  • Volume 19, Issue 2,  2016, pp.91-96
  • Publisher : Korean Society of Earth and Exploration Geophysicists
  • DOI : 10.7582/GGE.2016.19.2.091
 Title & Authors
A Least Square Fit Analysis on the Earth's Polar Motion Time Series: Implication against Smylie's Conjecture
Chung, Tae-Woong; Na, Sung-Ho;
  PDF(new window)
 Abstract
From the Earth's polar motion time series (IERS 08 C04, since 1981), after removal of seasonal variation by band-pass filtering, we acquired Earth's free Eulerian motion (Chandler wobble) time series. By successive least square error fittings on it, we analyzed amplitude and phase variation of Chandler wobble. We attempted to identify any precursory behavior of the pole before large earthquakes but only to fail. Unlike Smylie's conjecture there was no appreciable motion of the Earth's pole detected at around the each times of recent six largest earthquakes of magnitude over 8.5.
 Keywords
Polar Motion;Earthquake Precursor;
 Language
English
 Cited by
 References
1.
Bizouard, C., and Gambis, D., 2009, The Combined Solution C04 for Earth Orientation Parameters Consistent with International Terrestrial Reference Frame 2005, IAG Symp. 134, 265-270. doi: 10.1007/978-3-642-00860-3_41 crossref(new window)

2.
Chao, B. F., and Gross, R. S., 1995, Changes in the Earth's rotational energy induced by earthquakes, Geophysical Journal International, 122, 776-783. crossref(new window)

3.
Gross, R. S., 2009, Earth Rotation Variations - Long Period, Ch. 9 of Treatise of Geophysics vol. 3 Geodesy, Elsevier, Amsterdam.

4.
Smylie, D. E., and Manshina, L., 1968, Earthquakes and the Observed Motion of the Rotation Pole, Journal of Geophysical Research, 73, 7661-7673. crossref(new window)

5.
Smylie, D. E., and Zuberi, M., 2009, Free and forced polar motion and modern observation of the Chandler wobble, Journal of Geodynamics, 48, 226-229. doi:10.1016/j.jog.2009.09.028 crossref(new window)