The STP/S3-4 Satellite Experiment: Equatorial F-region Irregularities.
NAVAL RESEARCH LAB WASHINGTON DC
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The S3-4 in situ satellite observations near the nighttime equator 2230 LT have shown irregularity structures with depletions in plasma density up to 3 orders of magnitude and ranges in horizontal extent from less than 1 km to tens of kms. The holes have sharper gradients on the eastern boundary than across the western counterpart, and the power spectral indices in the irregularities lie between 1.9-2.5 in the intermediate wavelength domain. The east-west assymmetry of the depletions is also shown in the irregularity intensity and spectral strengths. The variations in density are more intense on the western wall of the holes suggesting a scintillation enhancement on the western boundary. In addition, the results of power spectral analyses support the role of the Rayleigh-Taylor instability in the generation of intermediate scale size irregularities during the occurrence of equatorial spread-F. Author
- Atmospheric Physics