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On Short-Period Dynamics in the Earth’s Core according to Ground-Based Observations of Geomagnetic Jerks

Izvestiya, Physics of the Solid Earth, ISSN: 1555-6506, Vol: 59, Issue: 1, Page: 41-48
2023
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Abstract—The use of a special technique for processing variations of the geomagnetic field at several mid-latitude observatories allowed us to identify a series of jerks over a 17-year period, from 2004 to 2020. To interpret the our experimental results showing that jerks follow with a quasi period of 3‒4 years, a probable mechanism of the occurrence of rapid changes in the geomagnetic field caused by unstable processes in the Earth’s core is proposed.

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