Analyze and Study Ionospheric Scintillation and Total Electron Content Variability (Ionospheric Studies and TEC Variations).
Final rept. 1 Mar 78-28 Feb 81,
EMMANUEL COLL BOSTON MASS PHYSICS RESEARCH DIV
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Ionospheric scintillation analyses have been conducted on several fronts, and are discussed here in the light of 1 recent observations, current theories, and coordinated studies of equatorial scintillations 2 morphology and analytical formulas at high latitudes 3 measurements associated with ionospheric heating. F-region irregularities are viewed from the concepts of localized origin of patches, in-situ spectral measurements, and coexistence of km- and m-scale irregularities. The dynamics of equatorial patch formation, motion, and decay are also discussed. Generation of irregularities during underdense heating was observed for the first time. Total electron content data have been utilized to derive the statistics of the variability of ionospheric time delay in the Mediterranean region for the current solar maximum period. The implications of the results on modern satellite ranging systems are discussed. Author