2011
DOI: 10.1016/j.jastp.2011.01.015
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A multivariate study of Forbush decrease simultaneity

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Cited by 32 publications
(24 citation statements)
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References 60 publications
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“…These data can also be used in the analysis of FD event simultaneity. Several claims on FD event simultaneity by some authors ( [5] , [8] ) using few FDs can be verified using the data. The diagrams show the relationships between raw and Fourier transformed CR data as well as CR anisotropic variations at different locations.…”
mentioning
confidence: 58%
“…These data can also be used in the analysis of FD event simultaneity. Several claims on FD event simultaneity by some authors ( [5] , [8] ) using few FDs can be verified using the data. The diagrams show the relationships between raw and Fourier transformed CR data as well as CR anisotropic variations at different locations.…”
mentioning
confidence: 58%
“…While ours is based on time of maximal CR decrease, their date referred to arrival of storm sudden commencement. Okike and Collier () attribute these differences to the time lag between the FD onset time and the time of maximal decrease. Table shows that a total of 124 large events are detected between 1989 and 1998.…”
Section: Resultsmentioning
confidence: 99%
“…For African continent, FDs are selected from Harmanus observatory, while Climax data are used for both North American continent and the U.S. latitude band. This is because GCRs are not uniformly distributed over the Earth, giving rise to simultaneous and nonsimultaneous FDs (Oh et al, ; Okike & Collier, ; Okike & Umahi, ).…”
Section: Data and Analysismentioning
confidence: 99%
“…Variability in the manifestations of FDs demonstrates that there are still open questions in this field (e.g. Okike and Collier, 2011;Pintér et al, 2011). Study (Oh and Yi, 2009) may support the hypothesis that the simultaneous FDs occur when stronger magnetic barriers pass by the Earth, and in contrast that the nonsimultaneous FDs occur only if the less strong magnetic barriers pass the Earth on the dusk side of the magnetosphere.…”
Section: Irregular Variationsmentioning
confidence: 99%