Ionospheric precursors to scintillation activity

Paul S.J. Spencer

Abstract


Ionospheric scintillation is the rapid fluctuation of both phase and amplitude of trans-ionospheric radio waves due to small scale electron density irregularities in the ionosphere. Prediction of the occurrence of scintillation at L band frequencies is needed to mitigate the disruption of space-based communication and navigation systems. The purpose of this paper is to present a method of using tomographic inversions of the ionospheric electron density obtained from ground-based GPS data to infer the location and strength of the post-sunset plasma drift vortex. This vortex is related to the pre-reversal enhancement in the eastwards electric field which has been correlated to the subsequent occurrence of scintillation.


Keywords


Scintillations; Forecasts; Dynamics; Inverse methods; Algorithms and implementation

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References


DOI: https://doi.org/10.4401/ag-6389

Published by INGV, Istituto Nazionale di Geofisica e Vulcanologia - ISSN: 2037-416X