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Characteristics of VHF radiowave scintillations over a solar cycle (1983–1993) at a low-latitude station: Waltair (17.7°N, 83.3°E)

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Annales Geophysicae

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Abstract

The characteristics of VHF radiowave scintillations at 244 MHz (FLEETSAT) during a complete solar cycle (1983–93) at a low-latitude station, Waltair (17.7°N, 83.3°E), are presented. The occurrence of night-time scintillations shows equinoctial maxima and summer minima in all the epochs of solar activity, and follows the solar activity. The daytime scintillation occurrence is negatively correlated with the solar activity and shows maximum occurrence during the summer months in a period of low solar activity. The occurrence of night-time scintillations is inhibited during disturbed days of high solar activity and enhanced during low solar activity.

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Authors and Affiliations

  1. Space Physics Laboratory, Department of Physics, Andhra University, Visakhapatnam, 530 003, India

    P. V. S. Rama Rao, P. T. Jayachandran, P. Sri Ram, B. V. Ramana Rao, D. S. V. V. D. Prasad & K. K. Rose

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  1. P. V. S. Rama Rao
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  2. P. T. Jayachandran
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  3. P. Sri Ram
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  4. B. V. Ramana Rao
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  5. D. S. V. V. D. Prasad
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  6. K. K. Rose
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Rao, P.V.S.R., Jayachandran, P.T., Ram, P.S. et al. Characteristics of VHF radiowave scintillations over a solar cycle (1983–1993) at a low-latitude station: Waltair (17.7°N, 83.3°E). Annales Geophysicae 15, 729–733 (1997). https://doi.org/10.1007/s00585-997-0729-3

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  • DOI: https://doi.org/10.1007/s00585-997-0729-3

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