English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The Earth's magnetic field is generated by dynamo action driven by convectionin the outer core. For numerical reasons, inertial and viscous forces play animportant role in geodynamo models; however, the primary dynamical balance inthe Earth's core is believed to be between buoyancy, Coriolis and magneticforces. The hope has been that by setting the Ekman number to be as small ascomputationally feasible, an asymptotic regime would be reached in which thecorrect force balance is achieved. However, recent analyses of geodynamo modelssuggest that the desired balance has still not yet been attained. Here we adopta complementary approach consisting of a model of rapidly rotating convectionin which inertial forces are neglected from the outset. Within this frameworkwe are able to construct a new branch of solutions in which the dynamogenerates a strong magnetic field that satisfies the expected force balance.The resulting strongly magnetized convection is dramatically different to thecorresponding solutions in which the field is weak.

Strong field dynamo action in rapidly rotating convection with no inertia