Possible damping model of the 6 year oscillation signal in length of day

Physics of the Earth and Planetary Interiors - Tập 265 - Trang 35-42 - 2017
Pengshuo Duan1,2, Genyou Liu1, Xiaogang Hu1, Yafei Sun1,2, Hong‐Lei Li1,2
1Institute of Geodesy and Geophysics, Chinese Academy of Sciences, State Key Laboratory of Geodesy and Earth’s Dynamics, Wuhan 430077, China
2University of Chinese Academy of Sciences, Beijing, 100049, China

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Abarco del Rio, 2000, Interannual signals in length of day and atmospheric angular momentum, Ann. Geophys., 18, 347, 10.1007/s00585-000-0347-9

Buffett, 2000, Gravitational breaking of inner-core rotation in geodynamo simulations, Geophys. Res. Lett., 27, 3125, 10.1029/2000GL011705

Buffett, 2005, A Green’s function for the excitation of torsional oscillations in the Earth’s core, J. Geophys. Res., 110, B08104, 10.1029/2004JB003495

Buffett, 2002, Modeling of nutation and precession: effects of electromagnetic coupling, J. Geophys. Res., 107, 2070, 10.1029/2000JB000056

Buffett, 2009, Inversion of torsional oscillations for the structure and dynamics of Earth’s core, Geophys. J. Int., 177, 878, 10.1111/j.1365-246X.2009.04129.x

Chao, 2014, Earth’s rotation variations: a wavelet analysis, Terra Nova, 26, 260, 10.1111/ter.12094

Davies, 2014, The strength of gravitational core-mantle coupling, Geophys. Res. Lett., 41, 10.1002/2014GL059836

Duan, 2015, Recovery of the 6year signal in length of day and its long term decreasing trend, Earth Planets Space, 67, 161, 10.1186/s40623-015-0328-6

Dumberry, 2008, Constraints on core-mantle electromagnetic coupling from torsional oscillation normal modes, J. Geophys. Res., 113, B03102, 10.1029/2007JB005135

Furuya, 1996, Estimation of period and Q of the Chandler wobble, Geophys. J. Int., 127, 693, 10.1111/j.1365-246X.1996.tb04047.x

Gillet, 2010, Fast torsional waves and strong magnetic field within the Earth’s core, Nature, 456, 74, 10.1038/nature09010

Gillet, 2015, Planetary gyre, time-dependent eddies, torsional waves and equatorial jets at the Earth’s core surface, J. Geophys. Res.: Solid Earth, 120, 3991, 10.1002/2014JB011786

Holme, 2013, Characterization and implications of intradecadal variations in length of day, Nature, 499, 202, 10.1038/nature12282

Hu, 2005, Wavelet filter analysis of local atmospheric pressure effects on gravity variations, J. Geod., 79, 447, 10.1007/s00190-005-0486-6

Hu, 2006, Wavelet filter analysis of atmospheric pressure effects in the long-period seismic mode band, Phys. Earth Planet. Inter., 154, 70, 10.1016/j.pepi.2005.09.003

Liu, 2007, Normal Morlet wavelet transform and its application to the Earth’s polar motion, J. Geophys. Res., 112, B08401, 10.1029/2006JB004895

Mound, 2003, Interannual oscillations in length of day: implications for the structure of the mantle and core, J. Geophys. Res., 108, 2334, 10.1029/2002JB002054

Mound, 2006, Detection of a gravitational oscillation in length-of-day, Earth Planet. Sci. Lett., 243, 383, 10.1016/j.epsl.2006.01.043

Nastula, 2015, Chandler wobble parameters from SLR and GRACE, J. Geophys. Res: Solid Earth, 120, 4474, 10.1002/2014JB011825

Silva, 2012, Assessing the importance and expression of the 6 year geomagnetic oscillation, J. Geophys. Res., 117, B10101, 10.1029/2012JB009405

Spiridonov, 2008, On the period and quality factor of the Chandler wobble, Phys. Solid Earth, 44, 678, 10.1134/S1069351308080077