V. Dehant, K. Creager, S. Karato, S. Zatman, and E. , Earth's Core: Dynamics, Structure, and Rotation, p.277, 2003.

D. Gubbins and J. Bloxham, Morphology of the geomagnetic field and implications for the geodynamo, Nature, vol.325, pp.509-511, 1987.

A. Jackson and C. C. Finlay, Geomagnetic secular variation and applications to the core, Treatise on Geophysics, vol.5, pp.147-193, 2007.

M. Greff-lefftz and H. Legros, Fluid core dynamics and degree-one deformations: Slichter mode and geocenter motions, Phys Earth Planet Inter, vol.161, pp.150-160, 2006.
URL : https://hal.archives-ouvertes.fr/hal-00311453

M. Dumberry, Gravity variations induced by core flows, Geophys J Int, vol.180, pp.635-650, 2010.

P. Roberts and S. Scott, On the analysis of the secular variation. 1. A hydromagnetic constraint: Theory, J Geomagn Geoelectr, vol.17, pp.137-151, 1965.

C. Gire, L. Mouël, and J. L. , Tangentially geostrophic flow at the core mantle boundary compatible with the observed geomagnetic secular variation: The large-scale component of the flow, Phys Earth Planet Inter, vol.59, pp.259-287, 1990.

J. Bloxham and A. Jackson, Fluid flow near the surface of Earth's outer core, Rev Geophys, vol.29, pp.97-120, 1991.

J. Bloxham, S. Zatman, and M. Dumberry, The origin of geomagnetic jerks, Nature, vol.420, pp.65-68, 2002.

M. Mandea, Geomagnetic jerks: Rapid core field variations and core dynamics, Space Sci Rev, vol.155, pp.147-175, 2010.

N. Olsen and M. Mandea, Rapidly changing flows in the Earth's core, Nat Geosci, vol.11, pp.390-394, 2008.

J. Dickey, Satellite Gravity and the Geosphere: Contributions to the Study of the Solid Earth and its Fluid Envelopes, 1997.

A. Cazenave and S. T. Nerem, Redistributing Earth's mass, Science, vol.297, pp.783-784, 2002.

C. Cox and B. F. Chao, Detection of large-scale mass redistribution in the terrestrial system since, Science, vol.297, pp.831-833, 1998.

G. Hulot, C. C. Finlay, C. Constable, N. Olsen, and M. Mandea, The magnetic field of planet Earth, Space Sci Rev, vol.152, pp.159-222, 2010.

F. Flechtner, System Earth via Geodetic-Geophysical Space Techniques, 2010.

V. Lesur, I. Wardinski, M. Rother, and M. Mandea, GRIMM: The GFZ Reference Internal Magnetic Model based on vector satellite and observatory data, Geophys J Int, vol.173, pp.382-394, 2008.

V. Lesur, I. Wardinski, M. Hamoudi, and M. Rother, The second generation of the GFZ reference internal magnetic field model: GRIMM-2, Earth Planets Space, vol.62, pp.765-773, 2010.

N. Olsen and M. Mandea, Investigation of a secular variation impulse using satellite data: The 2003 geomagnetic jerk, Earth Planet Sci Lett, vol.255, pp.94-105, 2007.

I. Wardinski, R. Holme, S. Asari, and M. Mandea, The 2003 geomagnetic jerk and its relation to the core surface flows, Earth Planet Sci Lett, vol.267, pp.468-481, 2008.

A. Chulliat, E. Thébault, and G. Hulot, Core field acceleration pulse as a common cause of the 2003 and 2007 geomagnetic jerks, Geophys Res Lett, vol.37, p.7301, 2010.
URL : https://hal.archives-ouvertes.fr/hal-00540466

J. Wahr, F. Molenaar, and F. Bryan, Time variability of the Earth's gravity field: Hydrological and oceanic effects and their possible detection using GRACE, J Geophys Res, vol.103, pp.30205-30229, 1998.

B. D. Tapley, S. Bettadpur, M. Watkins, and C. Reigber, The gravity recovery and climate experiment: Mission overview and early results, Geophys Res Lett, vol.31, p.9607, 2004.

S. Bruisma, J. M. Lemoine, R. Biancale, and N. Valès, CNES/GRGS 10-day gravity field models (release 2) and their evaluation, Adv Space Res, vol.45, pp.587-601, 2010.

A. Cazenave and J. Chen, Time-variable gravity from space and present-day mass redistribution in the Earth system, Earth Planet Sci Lett, vol.298, pp.263-274, 2010.
URL : https://hal.archives-ouvertes.fr/hal-00990963

N. A. Rahman, Course in Theoretical Statistics, p.542, 1968.

H. Von-storch and F. W. Zwiers, Statistical Analysis in Climate Research, p.494, 1999.

R. W. Preisendorfer, Principal Component Analyses in Meteorology and Oceanography, 1988.

M. Mandea, M. Korte, D. Mozzoni, and P. Kotzé, The magnetic field changing over the southern African continent: A unique behaviour, S Afr J Geol, vol.110, pp.2-3, 2007.

D. Gubbins and P. H. Roberts, Magnetohydrodynamics of the Earth's core, vol.2, pp.1-183, 1987.

D. Jault, L. Mouël, and J. L. , Physical properties at the top of the core and core surface motions, Phys Earth Planet Inter, vol.68, pp.76-84, 1991.

M. Greff-lefftz and H. Legros, Some remarks about the degree-one deformation of the Earth, Geophys J Int, vol.131, pp.699-723, 1997.

J. Flury and R. Rummel, Future Satellite Gravimetry and Earth Dynamics, 2005.

E. Friis-christensen, H. Lühr, D. Knudsen, and R. Haagmans, Swarm-An Earth observation mission investigating geospace, Adv Space Res, vol.41, pp.210-216, 2008.