Kakad, B. ; Nayak, C. K. ; Bhattacharyya, A. (2012) Power spectral characteristics of ESF irregularities during magnetically quiet and disturbed days Journal of Atmospheric and Solar-Terrestrial Physics, 81-82 . pp. 41-49. ISSN 1364-6826
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/j.jastp.2012.04.008
Abstract
Amplitude scintillations on 251 MHz signal recorded by spaced receivers at Tirunelveli (8.7°N, 77.8°E, dip latitude 0.6°N) for eight months during 1995–2005 are utilized in present work. Power spectral analysis of weak scintillations (0.15≤S4≤0.5) is carried out and spectral index, m of ESF irregularities, is computed for quiet and disturbed days. Maximum cross-correlation, CI(x0,tm), of intensity variations between two receivers is used to identify the fresh generation of EPBs resulted from magnetic activity. Increase in F-region height is seen prior to the generation of these fresh EPBs and associated ESF irregularities found to possess shallower power spectrum.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Scintillation; Power Spectrum; Magnetic Activity; Freshly Generated EPBs |
| ID Code: | 95896 |
| Deposited On: | 27 Nov 2012 05:34 |
| Last Modified: | 27 Nov 2012 05:34 |
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