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Short period fluctuations of the equatorial electrojet

Nature volume 261, pages 396–397 (1976)Cite this article

Abstract

THE signal strength and Doppler frequency spectra of v.h.f. backscatter radar echoes from the equatorial electrojet are being recorded at Thumba near Trivandrum (dip ∼ 1 °S). The v.h.f. radar operates on 54.95 MHz, with identical arrays of Yagi antennae for transmission and reception; the beam axis is orientated either vertically or obliquely at 30° to the vertical. Analysis of the radar backscatter signals and the magnetograms at Thumba has revealed that quasi-periodic fluctuations of the electrojet on time scales of a few tens of minutes are very frequent. We report here some typical experimental results on this phenomenon.

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References

  1. Clemmow, P. C., Johnson, M. A., and Weekes, K., Rep. Phys. Soc. Conf. Phys. lonosph. 1954, 136 (Phys. Soc., London, 1955).

  2. Kato, S., J. atmos. terr. Phys., 35, 1073–1082 (1973).

    Article  ADS  Google Scholar 

  3. Kato, S., J. geophys. Res., 78, 757–762 (1973).

    Article  ADS  Google Scholar 

  4. Reid, G. C., J. geophys. Res., 73, 1627–1640 (1968).

    Article  ADS  Google Scholar 

  5. Register, A., and D'Angelo, N., J. geophys. Res., 75, 3879–3887 (1970).

    Article  ADS  Google Scholar 

  6. Register, A., J. geophys. Res., 77, 2975–2981 (1972).

    Article  ADS  Google Scholar 

  7. Sudan, R. N., Akinrimisi, J., and Farley, D. T., J. geophys. Res., 78, 240–248 (1973).

    Article  ADS  Google Scholar 

  8. Rognlien, T. D., and Weinstock, J., J. geophys. Res., 79, 4733–4746 (1974).

    Article  ADS  Google Scholar 

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Authors and Affiliations

  1. Space Physics Division, Vikram Sarabhai Space Centre, Trivandrum, 695022, India

    C. A. REDDY & C. V. DEVASIA

Authors
  1. C. A. REDDY
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  2. C. V. DEVASIA
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REDDY, C., DEVASIA, C. Short period fluctuations of the equatorial electrojet. Nature 261, 396–397 (1976). https://doi.org/10.1038/261396a0

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