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Geophysics

Seismology, geodesy, and Earth structure.

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from arXiv
#2

Turbulent damping of fast tidal oscillations by three-dimensional Rayleigh-Bénard convection with a radiating free surface

Caroline Terquem, Alexander Boone, Enrico Martinez 2026-05-06

We present three-dimensional Dedalus simulations of Rayleigh-Bénard convection with a blackbody-radiating free upper surface, subject to a low-amplitude oscillatory forcing that mimics tidal perturbations in convective envelopes of stars and planets. The forcing period is 10-100 times shorter than t

#4

Earth and Mars interior structures set by re-melting of the first solid mantle

Antonio Manjón-Cabeza Córdoba, Maxim D. Ballmer, Oliver Shorttle 2026-05-06

Magma ocean crystallisation sets up the early structure and long-term evolution of terrestrial planets. Recent seismic evidence signals the presence of a silicate layer at the base of Mars' mantle. Magma-ocean crystallisation and subsequent overturn has been invoked as a hypothesis for this layer's

#5

Diffusiophoretic dispersion of a colloidal blob in porous media

Aditya R. Pujari, Amir A. Pahlavan 2026-05-06

Predicting and controlling the transport of colloids in porous media is essential for applications ranging from contaminant remediation to drug delivery. In these complex environments, solute gradients are ubiquitous and could drive diffusiophoretic particle migration, yet their impact on macroscopi

#7

Transport of electrons in tangled magnetic fields

Daniel Verscharen, Natasha Jeffrey, Anton Artemyev et al. 2026-05-05

Cosmic magnetic fields are typically inhomogeneous and often highly tangled due to large-scale plasma flows, turbulence, and instabilities. If the variations in the magnetic field occur on scales that are large compared to the gyro-radius of the plasma electrons, the electrons are primarily confined