Реакция ионосферы на солнечное затмение 20 марта 2015 г. над Харьковом
Дата
2016
ORCID
DOI
item.page.thesis.degree.name
item.page.thesis.degree.level
item.page.thesis.degree.discipline
item.page.thesis.degree.department
item.page.thesis.degree.grantor
item.page.thesis.degree.advisor
item.page.thesis.degree.committeeMember
Назва журналу
Номер ISSN
Назва тому
Видавець
НТУ "ХПИ"
Анотація
Представлены результаты экспериментальных и модельных исследований вариаций параметров ионосферной плазмы, динамических и тепловых процессов в ионосфере во время частного (0.54) солнечного затмения 20 марта 2015 г. над Харьковом. Затмение протекало на фоне фазы восстановления сильной магнитной бури, которая имела место 17–18 марта. Использовались радар некогерентного рассеяния и цифровой ионозонд. Выявлено реакцию ионосферы на затмение в вариациях высоты максимума ионизации, концентрации и температуры электронов, скорости движения ионосферной плазмы, параметрах динамических и тепловых процессов.
The results of experimental and modeling studies of ionospheric plasma parameters variations, dynamic and thermal processes in the ionosphere during the partial solar eclipse on March 20, 2015 over Kharkiv are presented. The solar disk diameter maximum coverage was about 0.54. The solar eclipse proceeded against the background of the recovery phase of strong magnetic storm which took place on 17–18 March 2015 (Kpmax=8). The incoherent scatter radar and digital ionosonde were used for observation. We found that at the time of maximum Sun obscuration (10:15 UT), the F2-layer peak height increased by 40 km (from 240 to 280 km), a decrease in the electron density was approximately 18.5 and 16.5 % at altitudes of 190 and 210 km, respectively. The maximum decrease in electron temperature at the same time amounted to 19.5 % at altitude of 340 km. Velocity of the downward plasma movement Vz increased by 0–60 m/s with height increase within the altitude range of 310–650 km. The altitude profiles of Vz velocity near the main phase of the solar eclipse became similar to the nighttime ones. The ionosphere response on the solar eclipse was also revealed in variations of the dynamic and thermal processes.
The results of experimental and modeling studies of ionospheric plasma parameters variations, dynamic and thermal processes in the ionosphere during the partial solar eclipse on March 20, 2015 over Kharkiv are presented. The solar disk diameter maximum coverage was about 0.54. The solar eclipse proceeded against the background of the recovery phase of strong magnetic storm which took place on 17–18 March 2015 (Kpmax=8). The incoherent scatter radar and digital ionosonde were used for observation. We found that at the time of maximum Sun obscuration (10:15 UT), the F2-layer peak height increased by 40 km (from 240 to 280 km), a decrease in the electron density was approximately 18.5 and 16.5 % at altitudes of 190 and 210 km, respectively. The maximum decrease in electron temperature at the same time amounted to 19.5 % at altitude of 340 km. Velocity of the downward plasma movement Vz increased by 0–60 m/s with height increase within the altitude range of 310–650 km. The altitude profiles of Vz velocity near the main phase of the solar eclipse became similar to the nighttime ones. The ionosphere response on the solar eclipse was also revealed in variations of the dynamic and thermal processes.
Опис
Ключові слова
метод некогерентного рассеяния, вариации параметров ионосферы, геокосмическая буря, ионосферная плазма, параметры тепловых процессов, solar eclipse, ionosphere, incoherent scatter method, variations of ionospheric parameters
Бібліографічний опис
Реакция ионосферы на солнечное затмение 20 марта 2015 г. над Харьковом / И. Ф. Домнин [и др.] // Вісник Нац. техн. ун-ту "ХПІ" : зб. наук. пр. Темат. вип. : Радіофізика та іоносфера = Bulletin of National Technical University "KhPI" : coll. of sci. papers. Ser. : Radiophysics and ionosphere. – Харків : НТУ "ХПІ", 2016. – № 34 (1206). – С. 63-72.