Thermal and electrical conductivity of iron at Earth's core conditions
The Earth acts as a gigantic heat engine driven by the decay of radiogenic isotopes and
slow cooling, which gives rise to plate tectonics, volcanoes and mountain building. Another …
slow cooling, which gives rise to plate tectonics, volcanoes and mountain building. Another …
[PDF][PDF] Energetics of the core
F Nimmo - Treatise on geophysics, 2007 - scholar.archive.org
This chapter reviews theoretical approaches to calculating the energy and entropy budgets
of the Earth's core. The energy budget allows the growth of the inner core with time to be …
of the Earth's core. The energy budget allows the growth of the inner core with time to be …
The high conductivity of iron and thermal evolution of the Earth's core
We measured the electrical resistivity of iron and iron-silicon alloy to 100 GPa. The resistivity
of iron was also calculated to core pressures. Combined with the first geophysical model …
of iron was also calculated to core pressures. Combined with the first geophysical model …
The stratified layer at the core–mantle boundary caused by barodiffusion of oxygen, sulphur and silicon
Barodiffusion is the tendency of light elements to migrate down a pressure gradient. In the
Earth's outer core, this effect can lead to the development of a chemically stable layer …
Earth's outer core, this effect can lead to the development of a chemically stable layer …
Dynamo constraints on the long-term evolution of Earth's magnetic field strength
Elucidating the processes in the liquid core that have produced observed palaeointensity
changes over the last 3.5 Gyr is crucial for understanding the dynamics and long-term …
changes over the last 3.5 Gyr is crucial for understanding the dynamics and long-term …
Quantitative estimates of average geomagnetic axial dipole dominance in deep geological time
A defining characteristic of the recent geomagnetic field is its dominant axial dipole which
provides its navigational utility and dictates the shape of the magnetosphere. Going back …
provides its navigational utility and dictates the shape of the magnetosphere. Going back …
Cooling history of Earth's core with high thermal conductivity
CJ Davies - Physics of the Earth and Planetary Interiors, 2015 - Elsevier
Thermal evolution models of Earth's core constrain the power available to the geodynamo
process that generates the geomagnetic field, the evolution of the solid inner core and the …
process that generates the geomagnetic field, the evolution of the solid inner core and the …
[HTML][HTML] An assessment of long duration geodynamo simulations using new paleomagnetic modeling criteria (QPM)
Long-term temporal variations of the magnetic field (timescales> 10 Myr), characterized from
paleomagnetic data, have been hypothesized to reflect the evolution of Earth's deep interior …
paleomagnetic data, have been hypothesized to reflect the evolution of Earth's deep interior …
Thermal convection and dynamo action with stable stratification at the top of the earth's outer core
P Mukherjee, S Sahoo - Physics of the Earth and Planetary Interiors, 2023 - Elsevier
The outer core of the Earth, filled with electrically conducting fluid, undergoes
thermochemical convection due to super-adiabatic temperature gradients. Near the core …
thermochemical convection due to super-adiabatic temperature gradients. Near the core …
Numerical dynamo simulations reproduce paleomagnetic field behavior
Numerical geodynamo simulations capture several features of the spatial and temporal
geomagnetic field variability on historical and Holocene timescales. However, a recent …
geomagnetic field variability on historical and Holocene timescales. However, a recent …