Geophysics from terrestrial time‐variable gravity measurements

M Van Camp, O de Viron, A Watlet… - Reviews of …, 2017 - Wiley Online Library
In a context of global change and increasing anthropic pressure on the environment,
monitoring the Earth system and its evolution has become one of the key missions of …

[HTML][HTML] A dynamical prospective on interannual geomagnetic field changes

N Gillet, F Gerick, R Angappan, D Jault - Surveys in Geophysics, 2022 - Springer
Geomagnetic observations from satellites have highlighted interannual variations in the rate
of change of the magnetic field originating from Earth's core. Downward continued to the …

Turbulent geodynamo simulations: a leap towards Earth's core

N Schaeffer, D Jault, HC Nataf… - Geophysical Journal …, 2017 - academic.oup.com
We present an attempt to reach realistic turbulent regime in direct numerical simulations of
the geodynamo. We rely on a sequence of three convection-driven simulations in a rapidly …

Scaling regimes in spherical shell rotating convection

T Gastine, J Wicht, J Aubert - Journal of Fluid Mechanics, 2016 - cambridge.org
Rayleigh–Bénard convection in rotating spherical shells can be considered as a simplified
analogue of many astrophysical and geophysical fluid flows. Here, we use three …

Dynamo-based limit to the extent of a stable layer atop Earth's core

T Gastine, J Aubert, A Fournier - Geophysical Journal …, 2020 - academic.oup.com
The existence of a stably stratified layer underneath the core–mantle boundary (CMB) has
been recently revived by corroborating evidences coming from seismic studies, mineral …

Relating force balances and flow length scales in geodynamo simulations

T Schwaiger, T Gastine, J Aubert - Geophysical Journal …, 2021 - academic.oup.com
In fluid dynamics, the scaling behaviour of flow length scales is commonly used to infer the
governing force balance of a system. The key to a successful approach is to measure length …

[HTML][HTML] Core eigenmodes and their impact on the Earth's rotation

SA Triana, M Dumberry, D Cébron, J Vidal, A Trinh… - Surveys in …, 2022 - Springer
Abstract Changes in the Earth's rotation are deeply connected to fluid dynamical processes
in the outer core. This connection can be explored by studying the associated Earth …

Cooling patterns in rotating thin spherical shells—Application to Titan's subsurface ocean

H Amit, G Choblet, G Tobie, F Terra-Nova, O Čadek… - Icarus, 2020 - Elsevier
We use rotating convection simulations in a thin spherical shell to study fluid dynamics in
subsurface oceans of icy moons. We find two types of persistent results, characterized by …

Efficiency of tidal dissipation in slowly rotating fully convective stars or planets

J Vidal, AJ Barker - Monthly Notices of the Royal Astronomical …, 2020 - academic.oup.com
Turbulent convection is thought to act as an effective viscosity in damping equilibrium tidal
flows, driving spin and orbital evolution in close convective binary systems. Compared to …

Thermal convection and dynamo action with stable stratification at the top of the earth's outer core

P Mukherjee, S Sahoo - Physics of the Earth and Planetary Interiors, 2023 - Elsevier
The outer core of the Earth, filled with electrically conducting fluid, undergoes
thermochemical convection due to super-adiabatic temperature gradients. Near the core …