Magnetic aspect sensitivity of 3-m F-region field-aligned plasma density irregularities over Jicamarca

Details Magnetic aspect sensitivity of 3-m F-region field-aligned plasma density irregularities over Jicamarca Magnetic aspect sensitivity of 3-m F-region field-aligned plasma density irregularities over Jicamarca

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011jgra..11610302h&link_type=abstract

Journal of Geophysical Research, Volume 116, Issue A10, CiteID A10302

Physics

Ionosphere: Equatorial Ionosphere, Ionosphere: Ionospheric Irregularities, Radio Science: Interferometry (1207, 1209, 1242), Radio Science: Ionospheric Physics (1240, 2400)

Scientific paper

The magnetic aspect angle sensitivity of 3-m plasma density irregularities in the F-region ionosphere over Jicamarca has been measured during the passage of a radar plume in an equatorial spread-F event. The measurement technique utilizes radar interferometry with a number of antenna baselines with different lengths and orientations. Several corrections are applied to the data to reduce experimental biases. The RMS aspect angle half widths (the square root of the angular variance, the standard deviation) were found to be 0.01 ± 0.005° in a bottomside layer and near the top of the plume and 0.02 ± 0.005° in the central channel of the plume near F-peak altitudes. In the frequency domain, the magnetic aspect width was narrowest at small Doppler shifts and broader in the wings of the spectra when wings existed. These findings appear to be reasonably consistent with theoretical predictions, although questions remain.

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