Le champs magnétique terrestre expliqué autrement

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Earth's magnetic field, long thought to be generated by molten metals swirling around its core, may instead be produced by ocean currents, according to controversial new research published this week.

It suggests that the movements of such volumes of salt water around the world have been seriously underestimated by scientists as a source of magnetism.

If proven, the research would revolutionise geophysics, the study of the Earth’s physical properties and behaviour, in which the idea that magnetism originates in a molten core is a central tenet. [...]

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Ce ne serait donc pas du métal fondu tournicottant autour d'un noyau (quelle anerie) qui produirait le champs magnétique terrestre, mais le mouvement des océans, d'après une nouvelle recherche publiée cette semaine.

Désolée de les décevoir, mais ce n'est pas ça non plus.

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