jenner-angeo-38-575-2020.pdf (7.17 MB)
Plasma density gradients at the edge of polar ionospheric holes: The absence of phase scintillation
journal contribution
posted on 2020-05-19, 11:07 authored by LA Jenner, AG Wood, GD Dorrian, K Oksavik, TK Yeoman, AR Fogg, AJ CosterPolar holes were observed in the high-latitude ionosphere during a series of multi-instrument case studies close to the Northern Hemisphere winter solstice in 2014 and 2015. These holes were observed during geomagnetically quiet conditions and under a range of solar activities using the European Incoherent Scatter (EISCAT) Svalbard Radar (ESR) and measurements from Global Navigation Satellite System (GNSS) receivers. Steep electron density gradients have been associated with phase scintillation in previous studies; however, no enhanced scintillation was detected within the electron density gradients at these boundaries. It is suggested that the lack of phase scintillation may be due to low plasma density levels and a lack of intense particle precipitation. It is concluded that both significant electron density gradients and plasma density levels above a certain threshold are required for scintillation to occur.
Funding
Luke A. Jenner was supported by internal funds from Nottingham Trent University. Alexandra R. Fogg was supported by a studentship from the Science and Technology Facilities Council (UK). Publication charges were met by Nottingham Trent University.
History
Citation
Jenner, L. A., Wood, A. G., Dorrian, G. D., Oksavik, K., Yeoman, T. K., Fogg, A. R., and Coster, A. J.: Plasma density gradients at the edge of polar ionospheric holes: the absence of phase scintillation, Ann. Geophys., 38, 575–590, https://doi.org/10.5194/angeo-38-575-2020, 2020.Version
- VoR (Version of Record)
Published in
Annales GeophysicaeVolume
38Issue
2Pagination
575 - 590Publisher
Copernicus GmbHissn
0992-7689eissn
1432-0576Acceptance date
2019-12-11Copyright date
2020Available date
2020-04-24Publisher DOI
Publisher version
https://www.ann-geophys.net/38/575/2020/Language
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