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Geomagnetic Jerks Finally Reproduced, Explained


Computer simulation model of the interior of the Earths core, with magnetic field lines in orange.

Researchers have created a computer model to explain anomalies in the Earth's magnetic field.

Credit: Aubert et al./IPGP/CNRS Photo library

Researchers at the French National Center for Scientific Research (CNRS) and the Technical University of Denmark have created a computer model to explain anomalies in the Earth's magnetic field.

The scientists used supercomputers to build a simulation very close to the physical conditions of the Earth's metallic core, which required the equivalent of 4 million hours of calculation.

The team successfully replicated the chain of events leading to geomagnetic jerks, which are fueled in the simulation by hydromagnetic waves emitted in the inner core; these waves become focused and amplified as they approach the core's surface, causing magnetic disturbances.

The research creates a path toward better predictions of the Earth's magnetic field, and could help geophysicists investigate the physical properties of the planet’s core and inner mantle.

From French National Center for Scientific Research (CNRS)
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Abstracts Copyright © 2019 SmithBucklin, Washington, DC, USA


 

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