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Tag Archives: dynamo
When did the Martian dynamo die?
Current thinking among Mars scientists holds that the Red Planet’s dynamo — the geo-engine in its molten core which generates a global magnetic field — was active soon after the planet formed, but turned off about 4 billion years ago. … Continue reading
Posted in Reports
Tagged atmosphere, core dynamo, dynamo, magnetic field, Meroe Patera, Nili Patera, Tyrrhenus Mons
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What turned off the Martian magnetic field?
For roughly the first 500 to 800 million years of its existence, Mars had a magnetic field generated by a natural internal dynamo. This was powered by convection currents in the planet’s molten iron core, which operated vigorously as they … Continue reading
Posted in Reports
Tagged convection, core, core dynamo, degassing, dynamo, magnetic field, mantle, volatiles, volcanos
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