Investigations of Pi2 micropulsations-I. Frequency spectra and polarisation

Doobov A.L. and Mainstone J.S. (1973) Investigations of Pi2 micropulsations-I. Frequency spectra and polarisation. Planetary and Space Science, 21 5: 721-730. doi:10.1016/0032-0633(73)90091-3

Author Doobov A.L.
Mainstone J.S.
Title Investigations of Pi2 micropulsations-I. Frequency spectra and polarisation
Journal name Planetary and Space Science   Check publisher's open access policy
ISSN 0032-0633
Publication date 1973-01-01
Sub-type Article (original research)
DOI 10.1016/0032-0633(73)90091-3
Volume 21
Issue 5
Start page 721
End page 730
Total pages 10
Subject 1908 Geophysics
1912 Space and Planetary Science
3103 Astronomy and Astrophysics
Abstract Pi2 micropulsations are recorded at four sites with approximately the same geo-magnetic longitude but spanning 36° in latitude. Frequency analyses on these signals show that they normally contain more than one spectral component and that these components, all of which commence simultaneously, are not normally harmonically related. In addition, the spectral content is found not to vary significantly with latitude. No significant correlations are found between Kp and the maximum period, the minimum period, or the number of frequency components, in a Pi2. However the 'average' Pi2 frequency is found to vary linearly with both Kp and the magnitude of the accompanying auroral bay. In addition, the signals measured at the 'low' and at the 'high' latitude sites are found to exhibit an overwhelming preference for the left-hand sense of polarisation, while those at the 'middle' latitude sites show no preference for either sense.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
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Citation counts: TR Web of Science Citation Count  Cited 12 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 7 times in Scopus Article | Citations
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