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The ∼150 day quasi‐periodicity in interplanetary and solar phenomena during cycle 23
Author(s) -
Richardson I. G.,
Cane H. V.
Publication year - 2005
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2004gl021691
Subject(s) - coronal mass ejection , interplanetary spaceflight , solar cycle 22 , solar cycle 23 , solar cycle , interplanetary magnetic field , physics , solar minimum , geomagnetic storm , northern hemisphere , solar cycle 24 , southern hemisphere , interplanetary medium , atmospheric sciences , solar energetic particles , solar wind , astronomy , magnetic field , quantum mechanics
An intermittent quasi‐periodicity of ∼150 days in various solar and interplanetary phenomena has been reported in earlier solar cycles. We suggest that variations in the occurrence of solar energetic particle events, interplanetary coronal mass ejections, and geomagnetic storm sudden commencements during solar cycle 23 show evidence of this quasi‐periodicity, which is also present in the sunspot number, in particular in the northern solar hemisphere. It is not, however, prominent in the interplanetary magnetic field strength.