Heat flux modulation in domino dynamo model

TL;DR

This paper demonstrates how heat flux variations at the core-mantle boundary influence geomagnetic reversal frequency using a domino dynamo model, aligning with results from complex 3D models and offering planetary insights.

Contribution

It introduces a simplified domino dynamo model that replicates key effects of heat flux variations on geomagnetic reversals, bridging complex models and planetary applications.

Findings

Heat flux variations affect reversal frequency.

The model reproduces effects seen in 3D dynamo simulations.

Applications to planetary magnetic fields are discussed.

Abstract

Using the domino dynamo model, we show how variations of the heat flux at the core-mantle boundary change the frequency of geomagnetic field reversals. In fact, we are able to demonstrate the effect known from the modern 3D planetary dynamo models using an ensemble of interacting spins, which obey equations of the Langevin type with a random force. We also consider applications to the giant planets and offer explanations of some specific episodes of the geomagnetic field in the past.