GD8.4 | Earth and Planetary cores
EDI
Earth and Planetary cores
Co-organized by EMRP1/PS1
Convener: Jerome Noir | Co-conveners: Eric EdmundECSECS, Jessica Irving, Sébastien Merkel, Daria Holdenried-Chernoff, Maylis Landeau, Santiago Triana

The dynamics of planetary cores and subsurface oceans represent fundamental components of planetary evolution models, contributing to the balance of heat and angular momentum, energy dissipation, and the generation of magnetic fields, which can be observed both in situ and remotely.

The steering mechanisms in the fluid layers of planetary cores encompass a range of processes, including slow thermal and compositional convection, as well as diurnal orbital perturbations, such as precession, nutations, librations, and tides. The resulting non-linear dynamics present a significant challenge for both numerical and experimental approaches. The increasing volume of data from satellite and Earth-based missions requires ongoing efforts to enhance our understanding of these dynamics through theoretical, numerical, and experimental research.

In addition, seismological observations provide a picture of the core as it is today. The increasing body of observations and data processing techniques offers new avenues to study the structure and physical properties of both the outer and inner core. This is complemented by information from high pressure mineral physics which can help in understanding the underlying effects of composition, chemical, and crystalline structure on the core as it is today or during its evolution since the formation of the Earth.

In this session, we welcome contributions from all disciplines to provide a comprehensive overview of the current state of planetary core and geodynamo models. This includes research on thermal and compositional convection, mechanically driven flows by precession/nutation, libration, and tides, dynamo processes, high pressure mineral physics, and seismological observations.