Amplitude Scintillations Revealed in the Auroral Zone by Computing High-Rate Scintillation Indices

Gytis Blinstrubas and Seebany Datta-Barua

Abstract:	We compute 1-second scintillation indices for a set of 76 scintillation periods previously identified, based on 100-s scintillation indices, as containing only phase scintillation. We find that half of the periods re-analyzed do in fact have amplitude scintillations exceeding a threshold occurring. This indicates that diffractive effects are occurring at L-band in the high-latitude ionosphere, but that they are so briefly sensed, likely due to the large-scale fast convection, that they are masked out when tens-of-seconds time intervals are used for computing amplitude and scintillation indices.
Published in:	Proceedings of the 38th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2025) September 8 - 12, 2025 Hilton Baltimore Inner Harbor Baltimore, Maryland
Pages:	3310 - 3317
Cite this article:	Blinstrubas, Gytis, Datta-Barua, Seebany, "Amplitude Scintillations Revealed in the Auroral Zone by Computing High-Rate Scintillation Indices," Proceedings of the 38th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2025), Baltimore, Maryland, September 2025, pp. 3310-3317. https://doi.org/10.33012/2025.20387
Full Paper:	ION Members/Non-Members: 1 Download Credit Sign In