Power Spectra of Ionospheric Scintillations

作者: G. V. Jandieri , A. Ishimaru , B. Rawat , O. Kharshiladze , Z. Diasamidze

DOI: 10.7716/AEM.V6I4.652

关键词: Line of forceScintillationSpectral densityPolarization (waves)Computational physicsIonosphereEarth's magnetic fieldElectron densityDiffractionPhysics

摘要: Second order statistical moments of the phase fluctuationsare obtained taking into account boundary condition,diffraction effects and polarization coefficients theordinary extraordinary waves. The variance thecorrelation function are calculated for arbitrary 3D spectralfunction electron density fluctuations containing bothanisotropic Gaussian power-law spectra; anisotropycoefficient orientation angle elongated plasmairregularities. scintillation index thescintillation level analyzed numerically. Maximum ofthe small-scale irregularities is in theinterval 0.2-0.3 corresponding to moderate scintillationintensity, within weak-scatter regime. Splashes arerevealed different anisotropy factor largescaleirregularities varying with respect tothe lines force geomagnetic field. Scintillation iscalculated using “frozenin”assumption movement rigidirregularities. Log-log plots power spectrum theintensity have same minimums satisfyingthe “standard relationship” scattered ordinary andextraordinary It was shown that normalizedscintillation growth both non-fully-developeddiffraction pattern transition zone increasinganisotropy factor. Rising leveldecreases splashes arises fully developedscintillation region.

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