Physics
Scientific paper
Nov 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993georl..20.2351c&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 20, no. 21, p. 2351-2354
Physics
4
F Region, Faraday Effect, Plasma Bubbles, Zonal Flow (Meteorology), Electric Fields, Electron Density (Concentration), Ionograms, Plasma Oscillations
Scientific paper
Investigation of the relationship between the percentage occurrence of equatorial plasma bubbles/range spread F irregularities (EPBRSI) and the Quasi-Biennial Oscillation (QBO) of the lower stratospheric mean zonal wind in the equatorial zone reveals a QBO-modulation effect on the percentage occurrence of the EPBRSI. A longitudinal dependence of this QBO-modulation effect has also been found: the percentage occurrence of EPBRSI increases (decreases) in the easterly phase of the QBO in the Indian-East African sector (in the American sector) and decreases (increases) in the westerly phase of the QBO in the Indian-East African sector (in the American sector). It is suggested that this represents new evidence that the low-latitude ionosphere is modulated by atmospheric planetary waves from below.
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