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Keywords = equatorial plasma bubbles spill-over

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23 pages, 14513 KB  
Article
Scintillations in Southern Europe During the Geomagnetic Storm of June 2015
by Anna Morozova, Luca Spogli, Teresa Barata, Rayan Imam, Emanuele Pica, Juan Andrés Cahuasquí, Mohammed Mainul Hoque, Norbert Jakowski and Daniela Estaço
Remote Sens. 2025, 17(3), 535; https://doi.org/10.3390/rs17030535 - 5 Feb 2025
Cited by 1 | Viewed by 1574
Abstract
The sensitivity of Global Navigation Satellite System (GNSS) receivers to ionospheric disturbances and their constant growth are nowadays resulting in an increased concern of GNSS users about the impacts of ionospheric disturbances at mid-latitudes. The geomagnetic storm of June 2015 is an example [...] Read more.
The sensitivity of Global Navigation Satellite System (GNSS) receivers to ionospheric disturbances and their constant growth are nowadays resulting in an increased concern of GNSS users about the impacts of ionospheric disturbances at mid-latitudes. The geomagnetic storm of June 2015 is an example of a rare phenomenon of a spill-over of equatorial plasma bubbles well north from their habitual. We study the occurrence of small- and medium-scale irregularities in the North Atlantic Eastern Mediterranean mid- and low-latitudinal zone by analysing the amplitude of the scintillation index S4 and rate of total electron content index (ROTI) measurements during this storm. In addition, large-scale perturbations of the ionospheric electron density were studied using ground and space-borne instruments, thus characterising a complex perturbation behaviour over the region mentioned above. The involvement of large-scale structures is emphasised by the usage of innovative approaches such as the ground-based gradient ionosphere index (GIX) and electron density and total electron content gradients derived from Swarm satellite data. The multi-source data allow us to characterise the impact of irregularities of different scales to better understand the ionospheric dynamics and stress the importance of proper monitoring of the ionosphere in the studied region. Full article
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