Gyre-driven decay of the Earth’s magnetic dipole
The magnitude of the Earth’s magnetic dipole has decreased by 9% over the past 175 years. Here, the authors suggest that the rate of dipole decay is controlled by a huge gyre in the liquid metal outer core acting on a field asymmetry, and that decay is set to continue for the next few decades.
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Autores principales: | , , |
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Formato: | article |
Lenguaje: | EN |
Publicado: |
Nature Portfolio
2016
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Materias: | |
Acceso en línea: | https://doaj.org/article/c3bf34e965a44e48bd7595263a381a20 |
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Sumario: | The magnitude of the Earth’s magnetic dipole has decreased by 9% over the past 175 years. Here, the authors suggest that the rate of dipole decay is controlled by a huge gyre in the liquid metal outer core acting on a field asymmetry, and that decay is set to continue for the next few decades. |
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