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Parameters of the fluid core resonance inferred from superconducting gravimeter data

Sato, Tadahiro; Tamura, Yoshiaki; Matsumoto, Koji; Imanishi, Yuichi; McQueen, Herbert


We have estimated the parameters of fluid core resonance (FCR) due to the nearly diurnal free wobble of the Earth's core based on the superconducting gravimeter (SG) data obtained at the following four observation sites; Esashi and Matsushiro in Japan, Canberra in Australia and Membach in Belgium. By fitting the tidal admittances normalized with the O1 wave at each site to a model of the damped harmonic oscillator, we obtained values of 429.66 ± 1.43 sidereal days, 9350-10,835, -4.828E-4 ±...[Show more]

CollectionsANU Research Publications
Date published: 2004
Type: Journal article
Source: Journal of Geodynamics
DOI: 10.1016/j.jog.2004.07.016


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