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;
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.
Polar Motion;Earthquake Precursor;
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