Earth's magnetic field is generated by fluid motions in the outer core. This geodynamo has
operated for over 3.4 billion years. However, the mechanism that has sustained the …

In 1995, two groups [Kageyama et al., 1995; Glatzmaier and Roberts, 1995a, 1995b]
reported results of numerical integrations of fully three‐dimensional, fully nonlinear …

We study numerically an extensive set of dynamo models in rotating spherical shells,
varying all relevant control parameters by at least two orders of magnitude. Convection is …

The present understanding of convection in rotating spherical fluid shells is reviewed and
some recent results on coherent structures and magnetic field generation are considered in …

The South Atlantic Magnetic Anomaly (SAMA) is one of the most outstanding anomalies of
the geomagnetic field. The SAMA secular variation was obtained and compared to the …

Computer simulation of a magnetohydrodynamic dynamo in a rotating spherical shell is
performed. A strong magnetic field is generated by thermal convection motion of an …

The mechanism by which the Earth's magnetic field is generated is thought to be thermal
convection in the metallic liquid iron core. Here we present results of a suite of self …

Convection in planetary cores can generate fluid flow and magnetic fields, and a number of
sophisticated codes exist to simulate the dynamic behaviour of such systems. We report on …

抄録 The generation and reversals of the magnetic field are investigated by the use of direct
numerical simulation of a thermally driven MHD Boussinesq flow in a rotating spherical …

Using long-duration, three-dimensional magnetohydrodynamic simulation, we found that the
magnetic dipole field generated by a dynamo action in a rotating spherical shell repeatedly …