Theoretical relationship between maximum value of the post-sunset drift velocity and peak-to-valley ratio of anomaly TEC

B. Basu, J. M. Retterer, O. de La Beaujardière, C. E. Valladares, Erhan Kudeki

Research output: Contribution to journalArticle

Abstract

Theoretical study of electron density distribution in the nighttime equatorial ionosphere shows that linear relationships with statistically significant correlation coefficients exist between the maximum value of the post-sunset plasma drift velocity and the peak-to-valley ratio of anomaly TEC. The study is based on the low-latitude density model of Air Force Research Laboratory (AFRL) and the obtained relationships are valid for the longitudinal sector of Jicamarca incoherent scatter radar whose drift velocity measurements are used. The significance of this finding lies in the fact that the maximum value of the post-sunset vertical plasma drift velocity is an important parameter for determining both the intensity and the latitudinal distribution of equatorial scintillation. When the parameter is not available from any direct measurement, the linear relationships may be used to estimate it from the measured peak-to-valley ratio of anomaly TEC.

Original languageEnglish (US)
JournalGeophysical Research Letters
Volume31
Issue number3
DOIs
StatePublished - Feb 16 2004

Fingerprint

sunset
plasma drift
valleys
anomalies
anomaly
valley
incoherent scatter radar
plasma
theoretical study
tropical regions
velocity measurement
correlation coefficients
electron density
ionospheres
scintillation
density distribution
ionosphere
sectors
radar
air

Keywords

  • Nighttime equatorial anomaly
  • Post-sunset drift velocity
  • Scintillation
  • TEC

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

Cite this

Theoretical relationship between maximum value of the post-sunset drift velocity and peak-to-valley ratio of anomaly TEC. / Basu, B.; Retterer, J. M.; de La Beaujardière, O.; Valladares, C. E.; Kudeki, Erhan.

In: Geophysical Research Letters, Vol. 31, No. 3, 16.02.2004.

Research output: Contribution to journalArticle

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AU - Basu, B.

AU - Retterer, J. M.

AU - de La Beaujardière, O.

AU - Valladares, C. E.

AU - Kudeki, Erhan

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