Analysis on the Temporal-Spatial Distribution of the Geomagnetic Activity Index Vr

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概要

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• Based on the analysis of the Vr index from data from geomagnetic observatories in China and four geomagnetic observatories abroad, temporal-spatial distribution characteristics of Vr index were analyzed. The Vr index showed 27-day solar-cycle recurrences and significant seasonal variation. It also increased with latitude. Meanwhile, both local-time dependence and an obvious dusk-dawn asymmetry existed, which might be related to the asymmetric ring current, the partial ring current, and the field-aligned current.

著者

• Yang Dong-Mei

  Institute of Geophysics, China Earthquake Administration

• He Yu-Fei

  Institute of Geophysics, China Earthquake Administration

• Yuan Ya-Hong

  Institute of Geophysics, China Earthquake Administration

• Chen Hua-Ran

  Institute of Geophysics, China Earthquake Administration

• Chen Chuan-Hua

  Taian Magnetic Observatory, Earthquake Administration of Shandong Province

関連論文

• Analysis on the Temporal-Spatial Distribution of the Geomagnetic Activity Index Vr

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