Earth's magnetic field is generated by fluid motions in the outer core. This geodynamo has
operated for over 3.4 billion years. However, the mechanism that has sustained the …

Paleomagnetic records from sediments, archeological artifacts, and lava flows provide the
foundation for studying geomagnetic field changes over 0–100 ka. Late Quaternary time …

Direct observations of the geomagnetic field show that secular variation is strong in the
Atlantic hemisphere, and comparatively reduced in the Pacific region. The dipole has been …

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 …

The strength of the geomagnetic field has decreased rapidly over the past two centuries,
coinciding with an increasing field asymmetry due to the growth of the South Atlantic …

Earth's inner core is predominantly composed of solid iron (Fe) and displays intriguing
properties such as strong shear softening and an ultrahigh Poisson's ratio. Insofar, physical …

Self-sustained convective dynamos in planetary systems operate in an asymptotic regime of
rapid rotation, where a balance is thought to hold between the Coriolis, pressure, buoyancy …

We present CHAOS-4, a new version in the CHAOS model series, which aims to describe
the Earth's magnetic field with high spatial and temporal resolution. Terms up to spherical …

Thermal interactions between Earth's core and mantle provide the power that maintains the
geomagnetic field. However, the effect of these interactions and, in particular, the …

An accurate description of turbulent core convection is necessary in order to build robust
models of planetary core processes. Towards this end, we focus here on the physics of …