Spatial and Temporal Evolution of Different‐Scale Ionospheric Irregularities in Central and East Siberia During the 27–28 May 2017 Geomagnetic Storm
Abstract We present a multi‐instrumental study of ionospheric irregularities of different scales (from tens of centimeters to few kilometers) observed over the Central and East Siberia, Russia, during a moderate‐to‐strong geomagnetic storm on 27–28 May 2017. From high‐frequency (HF) and ultrahigh‐fr...
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Wiley
2020-06-01
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| Series: | Space Weather |
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| Online Access: | https://doi.org/10.1029/2019SW002378 |
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| author | V. B. Ovodenko M. V. Klimenko I. E. Zakharenkova A. V. Oinats D. S. Kotova A. V. Nikolaev I. V. Tyutin D. D. Rogov K. G. Ratovsky D. V. Chugunin P. A. Budnikov J. C. Coxon B. J. Anderson A. A. Chernyshov |
| author_facet | V. B. Ovodenko M. V. Klimenko I. E. Zakharenkova A. V. Oinats D. S. Kotova A. V. Nikolaev I. V. Tyutin D. D. Rogov K. G. Ratovsky D. V. Chugunin P. A. Budnikov J. C. Coxon B. J. Anderson A. A. Chernyshov |
| author_sort | V. B. Ovodenko |
| collection | DOAJ |
| description | Abstract We present a multi‐instrumental study of ionospheric irregularities of different scales (from tens of centimeters to few kilometers) observed over the Central and East Siberia, Russia, during a moderate‐to‐strong geomagnetic storm on 27–28 May 2017. From high‐frequency (HF) and ultrahigh‐frequency (UHF) radar data, we observed an intense auroral backscatter developed right after the initial phase of the geomagnetic storm. Additionally, we examined variations of Global Positioning System (GPS)‐based ROT (rate of TEC changes, where TEC is total electron content) for available GPS receivers in the region. Ionosondes, HF, and UHF radar data exhibited a presence of intense multi‐scale ionospheric irregularities. We revealed a correlation between different‐scale Auroral/Farley‐Buneman ionospheric irregularities of the E layer during the geomagnetic storm. The combined analysis showed that an area of intense irregularities is well connected and located slightly equatorward to field‐aligned currents (FACs) and auroral oval at different stages of the geomagnetic storm. An increase and equatorward displacement of Region 1 (R1)/Region 2 (R2) FACs leads to appearance and equatorward expansion of ionospheric irregularities. During downward (upward) R1 FAC and upward (downward) R2 FAC, the eastward and upward (westward and downward) E × B drift of ionospheric irregularities occurred. Simultaneous disappearance of UHF/HF auroral backscatter and GPS ROT decrease occurred during a prolonged near noon reversal of R1 and R2 FAC directions that accompanied by R1/R2 FAC degradation and disappearance of high‐energy auroral precipitation. |
| format | Article |
| id | doaj-art-e088df26237c4a8698a7c7bfbed366bd |
| institution | Kabale University |
| issn | 1542-7390 |
| language | English |
| publishDate | 2020-06-01 |
| publisher | Wiley |
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| series | Space Weather |
| spelling | doaj-art-e088df26237c4a8698a7c7bfbed366bd2025-01-14T16:30:43ZengWileySpace Weather1542-73902020-06-01186n/an/a10.1029/2019SW002378Spatial and Temporal Evolution of Different‐Scale Ionospheric Irregularities in Central and East Siberia During the 27–28 May 2017 Geomagnetic StormV. B. Ovodenko0M. V. Klimenko1I. E. Zakharenkova2A. V. Oinats3D. S. Kotova4A. V. Nikolaev5I. V. Tyutin6D. D. Rogov7K. G. Ratovsky8D. V. Chugunin9P. A. Budnikov10J. C. Coxon11B. J. Anderson12A. A. Chernyshov13West Department of Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation RAS Kaliningrad RussiaWest Department of Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation RAS Kaliningrad RussiaWest Department of Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation RAS Kaliningrad RussiaInstitute of Solar Terrestrial Physics SB RAS Irkutsk RussiaWest Department of Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation RAS Kaliningrad RussiaArctic and Antarctic Research Institute Saint‐Petersburg RussiaJSC Scientific Research Institute for Long Distance Radiocommunication Moscow RussiaArctic and Antarctic Research Institute Saint‐Petersburg RussiaInstitute of Solar Terrestrial Physics SB RAS Irkutsk RussiaWest Department of Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation RAS Kaliningrad RussiaFedorov Institute of Applied Geophysics Moscow RussiaUniversity of Southampton Southampton UKJohns Hopkins University Applied Physics Laboratory Laurel Maryland USAWest Department of Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation RAS Kaliningrad RussiaAbstract We present a multi‐instrumental study of ionospheric irregularities of different scales (from tens of centimeters to few kilometers) observed over the Central and East Siberia, Russia, during a moderate‐to‐strong geomagnetic storm on 27–28 May 2017. From high‐frequency (HF) and ultrahigh‐frequency (UHF) radar data, we observed an intense auroral backscatter developed right after the initial phase of the geomagnetic storm. Additionally, we examined variations of Global Positioning System (GPS)‐based ROT (rate of TEC changes, where TEC is total electron content) for available GPS receivers in the region. Ionosondes, HF, and UHF radar data exhibited a presence of intense multi‐scale ionospheric irregularities. We revealed a correlation between different‐scale Auroral/Farley‐Buneman ionospheric irregularities of the E layer during the geomagnetic storm. The combined analysis showed that an area of intense irregularities is well connected and located slightly equatorward to field‐aligned currents (FACs) and auroral oval at different stages of the geomagnetic storm. An increase and equatorward displacement of Region 1 (R1)/Region 2 (R2) FACs leads to appearance and equatorward expansion of ionospheric irregularities. During downward (upward) R1 FAC and upward (downward) R2 FAC, the eastward and upward (westward and downward) E × B drift of ionospheric irregularities occurred. Simultaneous disappearance of UHF/HF auroral backscatter and GPS ROT decrease occurred during a prolonged near noon reversal of R1 and R2 FAC directions that accompanied by R1/R2 FAC degradation and disappearance of high‐energy auroral precipitation.https://doi.org/10.1029/2019SW002378field‐aligned irregularitiesradar auroral backscatterrate of TEC changefield‐aligned currentsE layerHF absorption |
| spellingShingle | V. B. Ovodenko M. V. Klimenko I. E. Zakharenkova A. V. Oinats D. S. Kotova A. V. Nikolaev I. V. Tyutin D. D. Rogov K. G. Ratovsky D. V. Chugunin P. A. Budnikov J. C. Coxon B. J. Anderson A. A. Chernyshov Spatial and Temporal Evolution of Different‐Scale Ionospheric Irregularities in Central and East Siberia During the 27–28 May 2017 Geomagnetic Storm Space Weather field‐aligned irregularities radar auroral backscatter rate of TEC change field‐aligned currents E layer HF absorption |
| title | Spatial and Temporal Evolution of Different‐Scale Ionospheric Irregularities in Central and East Siberia During the 27–28 May 2017 Geomagnetic Storm |
| title_full | Spatial and Temporal Evolution of Different‐Scale Ionospheric Irregularities in Central and East Siberia During the 27–28 May 2017 Geomagnetic Storm |
| title_fullStr | Spatial and Temporal Evolution of Different‐Scale Ionospheric Irregularities in Central and East Siberia During the 27–28 May 2017 Geomagnetic Storm |
| title_full_unstemmed | Spatial and Temporal Evolution of Different‐Scale Ionospheric Irregularities in Central and East Siberia During the 27–28 May 2017 Geomagnetic Storm |
| title_short | Spatial and Temporal Evolution of Different‐Scale Ionospheric Irregularities in Central and East Siberia During the 27–28 May 2017 Geomagnetic Storm |
| title_sort | spatial and temporal evolution of different scale ionospheric irregularities in central and east siberia during the 27 28 may 2017 geomagnetic storm |
| topic | field‐aligned irregularities radar auroral backscatter rate of TEC change field‐aligned currents E layer HF absorption |
| url | https://doi.org/10.1029/2019SW002378 |
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