Mantle cooling regulation and ancient geomagnetic field
Rubrics: ORIGINAL ARTICLES
Authors:
1.
Schmidt Institute of Physics of the Earth of Russian Academy of Sciences
Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation of the Russian Academy of Sciences
Russian Federation
Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation of the Russian Academy of Sciences
Russian Federation
Type:
Article
Pages:
from 1
to 6
Status:
Published
Received:
16.05.2022
Accepted:
18.05.2022
Published:
18.05.2022
Language:
Russian
Keywords:
liquid core, thermal and compositional convection, geodynamo
Funding:
State Assignment of the Schmidt Institute of Physics of the Earth of Russian Academy of Sciences
Abstract (English):
The joined core and mantle thermal evolution model of the Earth for 6 Gy is considered. The model describes evolution of the heat fluxes, temperature distribution in the Earth, energy available for the magnetic field generation. Using Monte Carlo method we find parameters of the model which produce realistic inner core size, heat flux at the surface of the planet, viscosity and temperature of the mantle. The quite large heat flux at the core-mantle boundary and corresponding energy source for geodynamo after accretion help to explain existence of the ancient geomagnetic field before the inner core origin.
The joined core and mantle thermal evolution model of the Earth for 6 Gy is considered. The model describes evolution of the heat fluxes, temperature distribution in the Earth, energy available for the magnetic field generation. Using Monte Carlo method we find parameters of the model which produce realistic inner core size, heat flux at the surface of the planet, viscosity and temperature of the mantle. The quite large heat flux at the core-mantle boundary and corresponding energy source for geodynamo after accretion help to explain existence of the ancient geomagnetic field before the inner core origin.
Keywords:
liquid core, thermal and compositional convection, geodynamo
liquid core, thermal and compositional convection, geodynamo
