Analytical approach to the computation of the Earth, the outer core and the inner core rotational motions
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Cited by (70)
Basic Earth's Parameters as estimated from VLBI observations
2017, Geodesy and GeodynamicsCitation Excerpt :The diagnoses and interpretation of the discrepancy can be found from (Dehant, same issue). Based on the solutions of Liouville equations for an elastic Earth with a liquid core [19,20] and this issue, we could infer the eigenperiod of the FCN (Free Core Nutation), which is observable in the nutations residuals w.r.t. MHB2000, but the FICN (Free Inner Core Nutation) remains undetectable in the measurements. Taking into accounts the bias in the imagery part of the ICB coupling constant, the FICN's period is Pficn = 952.1 ± 53.9 days and quality factor is Qficn = 443.0 ± 92.5.
Understanding the effects of the core on the nutation of the Earth
2017, Geodesy and GeodynamicsCitation Excerpt :In particular, we are presently working (in the frame of an ERC Grant called RotaNut for “Rotation and Nutation of a wobbly Earth”) on the demonstration of the existence of shear layers that are building up in the fluid due to a perturbation of the Ekman boundary layer caused by topography at the CMB or any other phenomena. While a detailed understanding of these coupling mechanisms could only come out from a fully-fleshed model, there is still some insight to be obtained by using deformation equation approach [17,46–63] or a simple semi-analytical approaches (see Refs. [64–68], or more recently [7–10,27,28]). The paper addresses this last approach in the frame of what we can learn from present-day observations.
Rotation of the Terrestrial Planets
2015, Treatise on Geophysics: Second EditionInvestigation of the time variability of diurnal tides and resonant FCN period
2014, Journal of Geodynamics