The dependence of zenith angle of the strength of 3-meter equatorial electrojet irregularities

Details The dependence of zenith angle of the strength of 3-meter equatorial electrojet irregularities The dependence of zenith angle of the strength of 3-meter equatorial electrojet irregularities

Jul 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980georl...7..497i&link_type=abstract

Geophysical Research Letters, vol. 7, July 1980, p. 497-500. NASA-supported research

Physics

7

Equatorial Electrojet, Magnetohydrodynamic Stability, Nonuniform Plasmas, Radar Measurement, Zenith, Power Spectra, Radar Scattering, Scattering Cross Sections, Traveling Waves, Vertical Motion

Scientific paper

Radar measurements in Peru were used to deduce the zenith angle dependence of the scattering cross section of plasma irregularities generated by instabilities in the equatorial electrojet. The irregularities probed by the 50 MHz Jicamarca radar had a wavelength of 3m. The cross section for the type 2 irregularities was isotropic in the plane perpendicular to the magnetic field, while the cross section for the stronger type 1 irregularities varied with zenith angle at a rate of approximately 0.3 dB/degree; the horizontally traveling waves were more than 100 times stronger than those traveling vertically.

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