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F layer ionization patches in the polar cap
Abstract
Ground‐based optical and digital ionosonde measurements were conducted at Thule, Greenland to measure ionospheric structure and dynamics in the nighttime polar cap F layer. These observations showed the existence of large‐scale (800–1000 km) plasma patches drifting in the antisunward direction during a moderately disturbed (Kp ≥ 4) period. Simultaneous Dynamics Explorer (DE‐B) low‐altitude plasma instrument (LAPI) measurements show that these patches with peak densities of ∼10 6 el cm−3 are not locally produced by structured particle precipitation. The LAPI measurements show a uniform precipitation of polar rain electrons over the polar cap. The combined measurements provide a comprehensive description of patch structure and dynamics. They are produced near or equatorward of the dayside auroral zone and convect across the polar cap in the antisunward direction. Gradients within the large scale, drifting patches are subject to structuring by convective instabilities. UHF scintillation and spaced receiver measurements are used to map the resulting irregularity distribution within the patches.
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Citations
Cited by
High‐latitude F region irregularities: A review and synthesis
Tsunoda, R. T. (1988) · Reviews of Geophysics · doi:10.1029/rg026i004p00719 · Cited by 485
Basu, S., Groves, K. M., Basu, S., & Sultan, P. J. (2002) · Journal of Atmospheric and Solar-Terrestrial Physics · doi:10.1016/s1364-6826(02)00124-4 · Cited by 328
GPS TEC, scintillation and cycle slips observed at high latitudes during solar minimum
Prikryl, P., Jayachandran, P. T., Mushini, S. C., Pokhotelov, D., MacDougall, J. W., Donovan, E., Spanswick, E., & St.-Maurice, J.-P. (2010) · Annales Geophysicae · doi:10.5194/angeo-28-1307-2010 · Cited by 136
Metadata
- Authors
- Weber, E. J., Buchau, J., Moore, J. G., Sharber, J. R., Livingston, R. C., Winningham, J. D., & Reinisch, B. W.
- Venue
- Journal of Geophysical Research: Space Physics
- Publisher
- American Geophysical Union (AGU)
- Published
- 1984-03
- Volume
- 89
- Issue
- A3
- Pages
- 1683-1694
- ISSN
- 0148-0227 (ISSN-L)
- OpenAlex
- W1987134412
- Cited by
- 338
- References
- 0
- FWCI
- 16.94
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: F layer ionization patches in the polar cap. https://app.cochat.ai/papers/10.1029/ja089ia03p01683
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- Weber, E. J., Buchau, J., Moore, J. G., Sharber, J. R., Livingston, R. C., Winningham, J. D., & Reinisch, B. W. (1984). F layer ionization patches in the polar cap. Journal of Geophysical Research: Space Physics. https://doi.org/10.1029/ja089ia03p01683
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