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

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Research Papers

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

Authors:

Ya-Hong Yuan ,

Institute of Geophysics, China Earthquake Administration, Beijing, 100081, China
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Dong-Mei Yang,

Institute of Geophysics, China Earthquake Administration, Beijing, 100081, China
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Hua-Ran Chen,

Institute of Geophysics, China Earthquake Administration, Beijing, 100081, China
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Yu-Fei He,

Institute of Geophysics, China Earthquake Administration, Beijing, 100081, China
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Chuan-Hua Chen

Taian Magnetic Observatory, Earthquake Administration of Shandong Province, Taian, 271000, China
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Abstract

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.
DOI: http://doi.org/10.2481/dsj.IAGA-06
How to Cite: Yuan, Y.-H. et al., (2011). Analysis on the Temporal-Spatial Distribution of the Geomagnetic Activity Index Vr. Data Science Journal. 10, pp.IAGA34–IAGA40. DOI: http://doi.org/10.2481/dsj.IAGA-06
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Published on 22 Jun 2011.
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