AGU Fall Meeting 2021 | 15 December 2021
Two-step nucleation of the Earth's inner core
Wentzcovitch + Feng Zhang + Kai Ming Ho ...
It has long been assumed the Earth’s solid inner core started to grow when molten iron cooled to its melting point. However, the nucleation mechanism, a necessary step of...
AGU Fall Meeting 2021 | 15 December 2021
Pause of inner-core differential rotation in recent decade
Song
Seismic observations provide compelling evidence for rapid temporal changes of the inner-core structure over years or decades, from high-quality repeating earthquakes. The...
AGU Fall Meeting 2021 | 15 December 2021
A Mechanically Strong Inner Core Implied by Deformation of Silicon-bearing Alloys
Brennan + Daniele Antonangeli + Guillaume Morard ...
Earth’s inner core displays strong seismic anisotropy, the major feature of which is faster wave propagation along paths parallel to Earth’s rotation axis1. This indicates...
AGU Fall Meeting 2021 | 15 December 2021
Exploring the dynamics of inward core solidification using analogue tank experiments.
Kathryn Dodds + James Bryson + Jerome Neufeld ...
Given their small sizes and low central pressures, the cores of asteroids are expected to have started crystallizing at the core mantle boundary (CMB) instead of at their...
AGU Fall Meeting 2021 | 15 December 2021
Local Estimation of the Core Surface Flow
Tobias Schwaiger + Jault + Mandea ...
The observed secular variation of the geomagnetic field is assumed to reflect the convective dynamics of the Earth’s liquid outer core. The reconstruction of the flow at the...