Solid Earth
Solid Earth
SE
Articles | Volume 14, issue 12
Articles | Volume 14, issue 12
https://doi.org/10.5194/se-14-1267-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/se-14-1267-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 14, issue 12
Research article
 | 
20 Dec 2023
Research article |  | 20 Dec 2023

Earth's core variability from magnetic and gravity field observations

Anita Thea Saraswati, Olivier de Viron, and Mioara Mandea

Related authors

The six-year cycle in atmospheric angular momentum: robustness, zonal-wind structure, and implications for Earth rotation
Julia Pfeffer, Anny Cazenave, Rodrigo Abarca-del-Rio, Veronique Dehant, Mioara Mandea, Severine Rosat, and Nicolas Gillet
EGUsphere, https://doi.org/10.5194/egusphere-2026-82,https://doi.org/10.5194/egusphere-2026-82, 2026
This preprint is open for discussion and under review for Earth System Dynamics (ESD).
Short summary
ESD Ideas: A 6-year oscillation in the whole Earth system?
Anny Cazenave, Julia Pfeffer, Mioara Mandea, and Veronique Dehant
Earth Syst. Dynam., 14, 733–735, https://doi.org/10.5194/esd-14-733-2023,https://doi.org/10.5194/esd-14-733-2023, 2023
Short summary
Detecting hydrological connectivity using causal inference from time series: synthetic and real karstic case studies
Damien Delforge, Olivier de Viron, Marnik Vanclooster, Michel Van Camp, and Arnaud Watlet
Hydrol. Earth Syst. Sci., 26, 2181–2199, https://doi.org/10.5194/hess-26-2181-2022,https://doi.org/10.5194/hess-26-2181-2022, 2022
Short summary
Comparing global seismic tomography models using varimax principal component analysis
Olivier de Viron, Michel Van Camp, Alexia Grabkowiak, and Ana M. G. Ferreira
Solid Earth, 12, 1601–1634, https://doi.org/10.5194/se-12-1601-2021,https://doi.org/10.5194/se-12-1601-2021, 2021
Short summary

Cited articles

Alken, P., Thébault, E., Beggan, C. D., et al.: International geomagnetic reference field: the thirteenth generation, Earth, Planets and Space, 73, 1–25, 2021. a
Allen, M. and Robertson, A.: Distinguishing modulated oscillations from coloured noise in multivariate datasets, Clim. Dynam., 12, 775–784, 1996. a
Allen, M. R. and Smith, L. A.: Monte Carlo SSA: Detecting irregular oscillations in the presence of colored noise, J. Climate, 9, 3373–3404, 1996. a
Aubert, J. and Finlay, C. C.: Geomagnetic jerks and rapid hydromagnetic waves focusing at Earth’s core surface, Nat. Geosci., 12, 393–398, 2019. a
Aubert, J. and Gillet, N.: The interplay of fast waves and slow convection in geodynamo simulations nearing Earth’s core conditions, Geophys. J. Int., 225, 1854–1873, 2021. a, b
More articles (78)
Download
Short summary
To understand core dynamics, insight from several possible observables is needed. By applying several separation methods, we show spatiotemporal variabilities in the magnetic and gravity fields related to the core dynamics. A 7-year oscillation is found in all conducted analyses. The results in the magnetic field reflect the core processes and the variabilities in the gravity field exhibit new findings that might be an interesting input to build an enhanced model of the Earth’s core.
Read more
Share