Research from all publishers Recent investigations into the geodynamo have focused on refining simulation models to better capture the intricate dynamics of core convection and magnetic field ...

Earth’s early atmosphere was mainly a toxic mix of carbon dioxide, nitrogen and water vapor. Then, between 2.4 billion and 400 million years ago, oxygen levels began to increase exponentially ...

The cause of the anomaly lies deep beneath the Earth’s surface. Scientists believe it’s linked to complex activity in the planet’s outer core. This core is made up of molten iron and nickel, and as ...

In the kinematic dynamo problem Maxwell's equations are solved for the magnetic field given a prescribed fluid velocity. Although no dynamic equations are involved, it does provide an accurate link ...

Abstract: In recent numerical simulations of the geodynamo the dynamo action is driven, primarily, by the effects of helicity, with differential rotation playing only a secondary role. These dynamos ...