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| Titel |
Phase and coherence analysis of VHF scintillation over Christmas Island |
| VerfasserIn |
E. B. Shume, A. J. Mannucci, R. Caton |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 32, no. 3 ; Nr. 32, no. 3 (2014-03-28), S.293-300 |
| Datensatznummer |
250121042
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| Publikation (Nr.) |
 copernicus.org/angeo-32-293-2014.pdf |
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| Zusammenfassung |
| This short paper presents phase and coherence data from the cross-wavelet
transform applied on longitudinally separated very high frequency (VHF) equatorial ionospheric
scintillation observations over Christmas Island. The phase and coherence
analyses were employed on a pair of scintillation observations, namely, the
east-looking and west-looking VHF scintillation monitors at Christmas Island.
Our analysis includes 3 years of peak season scintillation data from
2008, 2009 (low solar activity), and 2011 (moderate solar activity). In
statistically significant and high spectral coherence regions of the
cross-wavelet transform, scintillation observations from the east-looking
monitor lead those from the west-looking monitor by about 20 to 60 (40 ±
20) min (most frequent lead times). Using several years (seasons and
solar cycle) of lead (or lag) and coherence information of the cross-wavelet
transform, we envisage construction of a probability model for forecasting
scintillation in the nighttime equatorial ionosphere. |
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