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Asymmetry in seasonal variations of geomagnetic activity

journal contribution
posted on 2023-06-07, 20:05 authored by Natalia BeloffNatalia Beloff, E O Falayi
Seasonal variations in geomagnetic activity were studied for the period of 1990-2007 using Dst and AE indices. Over 150 events characterised by the increase in geomagnetic activity of varying strength (from -90nT up to -1800 nT) were statistically analysed. Although Russell -McPherron effect plays major role in the equinoctial asymmetry in the geomagnetic activity, other effects may also take place. During this study we found a statistically significant October-November peak in geomagnetic activity for Northern Hemisphere, which is sufficiently larger than March- April peak. Several hypotheses for the cause of such effect are discussed.

History

Publication status

  • Published

Issue

52

Volume

88

Page range

521+

Department affiliated with

  • Informatics Publications

Full text available

  • No

Peer reviewed?

  • No

Legacy Posted Date

2012-02-06

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