Variability of ionospheric ionization over Eurasia according to data from a high-latitude ionosonde chain during extreme magnetic storms in 2015-Reference-Cited by-同舟云学术

Variability of ionospheric ionization over Eurasia according to data from a high-latitude ionosonde chain during extreme magnetic storms in 2015

Published:2024-06-25 Issue:2 Volume:10 Page:38-52
ISSN:2712-9640
Container-title:Solnechno-Zemnaya Fizika
language:en
Short-container-title:

Author:

Chernigovskaya Marina¹,Setov Artem¹,Ratovsky Konstantin¹,Kalishin Alexey²^ORCID,Stepanov Aleksandr³

Affiliation:

1. Institute of Solar Terrestrial Physics SB RAS

2. Arctic and Antarctic Research Institute

3. Yu.G. Shafer Institute of Cosmophysical Research and Aeronomy SB RAS

Abstract

. We have examined longitudinal-temporal variations in ionospheric parameters over Eurasia by analyzing data from a chain of high-latitude ionosondes along a latitude circle ~70° N (geomagnetic latitudes 58°<Glat<65°) in the longitudinal sector 26–171° E during severe magnetic storms of solar cycle 24 in March and June 2015. To analyze the response of ionospheric ionization to geomagnetic disturbances, we have used ionosonde data on hourly average critical frequency foF2 of the ionospheric F2 layer. Strong differences were observed between common peculiarities of temporal variations in foF2 for the analyzed periods of magnetic storms, which are likely associated with the characteristic features of the seasonal and diurnal variations in the background high-latitude ionosphere of the given geographic region. During the main and early recovery phases of magnetic storms there were periods of blackouts of ionosonde radio signals. Differences in the character of the ionospheric response to geomagnetic disturbances have been noted. This is probably due to seasonal features of the probability of occurrence of the ionospheric storm positive or negative phase in different seasons of the year. The trends of increasing ionospheric ionization over the vast region of Eastern, Western Siberia and Europe after the end of the extreme magnetic storm in March 2015, according to measurements from the chain of high-latitude ionosondes, may be associated with the formation of an area of increased [O]/[N₂] ratio over this territory. Such an increase in ionospheric ionization exceeding the background level of foF2 values can be considered as a clear manifestation of the after-effect of magnetic storms.

Publisher

Infra-M Academic Publishing House

Reference51 articles.

1. Алпатов В.В., Беляев А.Н., Куницын В.Е. Методы томографии в исследованиях и мониторинге верхней атмосферы и ионосферы. Мир измерений. 2013, № 2. C. 31–37., Alpatov V.V., Belyaev A.N., Kunitsyn V.E. Tomography methods in research and monitoring of the upper atmosphere and ionosphere. Mir izmerenii [Measurements World]. 2013, no. 2, pp. 31–37. (In Russian).

2. Андреева Е.С., Падохин А.М., Назаренко М.О., Туманова Ю.С., Калашникова С.А. Томографические методы исследования атмосферы и околоземного космического пространства: Современное состояние и перспективы развития. Труды XXVII Всероссийской открытой научной конференции «Распространение радиоволн». Калининград. 2021. C. 86–98., Afraimovich E.L., Perevalova N.P. GPS-monitoring verkhnei atmosfery Zemli [GPS Monitoring of the Earth’s Upper Atmosphere]. Irkutsk, 2006, pp. 90–94. (In Russian).

3. Афраймович Э.Л., Перевалова Н.П. GPS-мониторинг верхней атмосферы Земли. Иркутск: ГУ НЦ ВСНЦ СО РАМН. 2006. С. 90–94., Afraimovich E.L., Astafyeva E.I., Demyanov V.V., Edemskiy I.K., Gavrilyuk N.S., Ishin A.B., et al. A review of GPS/GLONASS studies of the ionospheric response to natural and anthropogenic processes and phenomena. J. Space Weather and Space Climate. 2013, vol. 3, no. A27. DOI: 10.1051/swsc/2013049.

4. Выставной В.М., Макарова Л.Н., Широчков А.В., Егорова Л.В. Исследования высокоширотной ионосферы методом вертикального зондирования с использованием современного цифрового ионозонда CADI. Гелиогеофизи-ческие исследования. 2013. Вып. 4. С. 1–10., Andreeva E.S., Padokhin A.M., Nazarenko M.O., Tumanova Yu.S., Kalashnikova S.A. Tomographic methods for studying the atmosphere and near-Earth space: Current status and development prospects. Trudy XXVII Vserossiiskoi otkrytoi nauchnoi konferentsii “Rasprostranenie radiovoln” [Proc. XXVII National Open Scientific Conference “Radio Wave Propagation”]. Kaliningrad, 2021, pp. 86–98. (In Russian).

5. Деминов М.Г. Ионосфера Земли: закономерности и механизмы. В сб.: Электромагнитные и плазменные процессы от недр Солнца до недр Земли. Юбилейный сборник ИЗМИРАН-75. Москва, 2015. С. 295–346., Buonsanto M.J. Ionospheric storms — a review. Space Sci. Rev. 1999, vol. 88, pp. 563–601.