Ionospheric storm effects over the People’s Republic of China on 14 May 2019: Results from multipath multi-frequency oblique radio sounding

Черногор, Л. Ф.; Гармаш, К. П.; Guo, Qiang; Luo, Y.; Rozumenko, V. T.; Zheng, Yu

doi:10.1016/j.asr.2020.03.037

Cited by 26 publications

(23 citation statements)

References 39 publications

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“…From 12:00 UT to 17:00 UT on 31 August 2019, virtually all propagation paths exhibited a quasiperiodicity in fD(t) at ~30 min period, T, and ~0.4-0.6 Hz amplitude, fDa. Given the fDa, the amplitude of variations in the electron density can be estimated by employing the following relation (Guo et al, 2019a(Guo et al, , 2020Chernogor et al, 2020):…”

Section: Wavelike Disturbance Effectsmentioning

confidence: 99%

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Dynamic processes in the magnetic field and in the ionosphere during the 30 August–2 September, 2019 geospace storm

Luo

Черногор

Гармаш

et al. 2020

Preprint

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Abstract. Back at the end of the last century, L. F. Chernogor validated the concept that geospace storms are comprised of synergistically coupled magnetic storms, ionospheric storms, atmospheric storms, and storms in the electric field originating in the magnetosphere, the ionosphere and the atmosphere (i.e., electric storms). Their joint studies require the employment of multiple-method approach to the Sun–interplanetary medium–magnetosphere–ionosphere–atmosphere – Earth system. This study provides general analysis of the 30 August–2 September, 2019 geospace storm, the analysis of disturbances in the geomagnetic field and in the ionosphere, as well as the influence of the ionospheric storm on the characteristics of HF radio waves over the People's Republic of China. A unique feature of the geospace storm under study is its duration, of up to four days. The main results of the study are as follows. The energy and power of the geospace storm have been estimated to be 1.5 PJ and 15 GW, and thus this storm is weak. The energy and power of the magnetic storm have been estimated to be 1.5 PJ and 9 GW, i.e., this storm is moderate, and a unique feature of this storm is the duration of the main phase, of up to two days. The recovery phase also was lengthy, no less than two days. On 31 August 2019 and on 1 September 2019, the variations in the H and D components attained 60–70 nT, while the Z-component variations did not exceed 20 nT. On 31 August 2019 and on 1 September 2019, the level of fluctuations in the geomagnetic field in the 100–1000 s period range increased from from 0.2–0.3 nT to 2–4 nT, while the energy of the oscillations showed a maximum in the 300–400 s to 700–900 s period range. The geospace storm was accompanied by a moderate to strong negative ionospheric storm. During 31 August 2019 and 1 September 2019, the electron density in the ionospheric F region reduced by a factor of 1.4 to 2.4 times as compared to the values on the reference day. The geospace storm gave rise to appreciable disturbances also in the ionospheric E region, as well as in the Es layer. In the course of the ionospheric storm, the altitude of reflection of radiowaves could sharply increase from about 150 km to approximately 300–310 km. The geospace storm was accompanied by the generation of atmospheric gravity waves modulating the ionospheric electron density. For the about 30 min period oscillation, the amplitude of the electron density disturbances could attain about 40 %, while it did not exceed 6 % for the about 15 min period. The results obtained have made a contribution to understanding of the geospace storm physics, to developing theoretical and empirical models of geospace storms, to the acquisition of detailed understanding of the adverse effects that geospace storms have on radiowave propagation and to applying that knowledge to effective forecasting these adverse influences.

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Section: Wavelike Disturbance Effectsmentioning

confidence: 99%

“…The raw data sets recorded by the multi-frequency multipath system at the Harbin Engineering University campus, the People's Republic of China (45.78 N, 126.68 E) and discussed in this paper can be requested online at https://dataverse.harvard.edu/dataset.xhtml?persistentId=doi:10.7910/DVN/86LHDC (Luo et al, 2020).…”

Section: Wavelike Disturbance Effectsmentioning

confidence: 99%

Dynamic processes in the magnetic field and in the ionosphere during the 30 August–2 September, 2019 geospace storm

Luo

Черногор

Гармаш

et al. 2020

Preprint

Self Cite

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“…All the processes listed above affect the magnetosphere, the ionosphere, the atmosphere, and the internal terrestrial layers through the interplanetary medium. Their joint study requires clustered-instrument studies of the internal layers in the Sun-interplanetary mediummagnetosphere-ionosphere-atmosphere-Earth (SIMMIAE) system (Chernogor and Rozumenko, 2008;Zalyubovsky et al, 2008;Chernogor, 2011;Chernogor and Domnin, 2014;Chernogor and Rozumenko, 2011, 2014Chernogor et al, 2020). The study of geospace storms, which are not quite correctly termed by some authors as the magnetic storms, the ionospheric storms, or thermospheric storms, has almost a 100 year history.…”

Section: Introductionmentioning

confidence: 99%

“…A few authors (Danilov and Morozova, 1985;Prölss, 1995Prölss, , 1997Laštovička, 1996;Fuller-Rowell et al, 1997;Buonsanto, 1999;Danilov and Laštovička, 2001;Danilov, 2013) generalized the observations of ionospheric storms.…”

Section: Introductionmentioning

confidence: 99%

“…The results of recent studies of ionospheric storm effects are presented in a large number of papers (see, e.g., Blanch et al, 2005;Mendillo, 2006;Pirog et al, 2006;Prölss, 2006;Kamide and Maltsev, 2007;Borries et al, 2015;Liu et al, 2016;Polekh et al, 2017;Shpynev et al, 2018;Yamauchi et al, 2018;Blagoveshchensky and Sergeeva, 2019;Chernogor et al, 2020;Mosna et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

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Dynamic processes in the magnetic field and in the ionosphere during the 30 August–2 September 2019 geospace storm: influence on high frequency radio wave characteristics

et al. 2021

Self Cite

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Abstract. The concept that geospace storms are comprised of synergistically coupled magnetic storms, ionospheric storms, atmospheric storms, and storms in the electric field originating in the magnetosphere, the ionosphere, and the atmosphere (i.e., electrical storms) was validated a few decades ago. Geospace storm studies require the employment of multiple-method approaches to the Sun–interplanetary medium–magnetosphere–ionosphere–atmosphere–Earth system. This study provides general analysis of the 30 August–2 September 2019 geospace storm, the analysis of disturbances in the geomagnetic field and in the ionosphere, as well as the influence of the ionospheric storm on the characteristics of high frequency (HF) radio waves over the People's Republic of China. The main results of the study are as follows. The energy and power of the geospace storm have been estimated to be 1.5×1015 J and 1.5×1010 W, and thus, this storm is weak. The energy and power of the magnetic storm have been estimated to be 1.5×1015 J and 9×109 W, i.e., this storm is moderate, and a characteristic feature of this storm is the duration of the main phase of up to 2 d. The recovery phase also was lengthy and was no less than 2 d. On 31 August and 1 September 2019, the variations in the H and D components attained 60–70 nT, while the Z-component variations did not exceed 20 nT. On 31 August and 1 September 2019, the level of fluctuations in the geomagnetic field in the 100–1000 s period range increased from 0.2–0.3 to 2–4 nT, while the energy of the oscillations showed a maximum in the 300–400 to 700–900 s period range. During the geospace storm, a moderately to strongly negative ionospheric storm manifested itself by the reduction in the ionospheric F-region electron density by a factor of 1.4 to 2.4 times on 31 August and 1 September 2019, compared to the its values on the reference day. Appreciable disturbances were also observed to occur in the ionospheric E region and possibly in the Es layer. In the course of the ionospheric storm, the altitude of reflection of radio waves could sharply increase from ∼150 to ∼300–310 km. The atmospheric gravity waves generated within the geospace storm modulated the ionospheric electron density; for the ∼30 min period oscillation, the amplitude of the electron density disturbances could attain ∼40 %, while it did not exceed 6 % for the ∼15 min period. At the same time, the height of reflection of the radio waves varied quasi-periodically with a 20–30 km amplitude. The results obtained have made a contribution to the understanding of the geospace storm physics, to developing theoretical and empirical models of geospace storms, to the acquisition of detailed understanding of the adverse effects that geospace storms have on radio wave propagation, and to applying that knowledge to effective forecasting of these adverse influences.

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Features of Ionospheric and Magnetic Effects of August 5–6, 2019 Noticeable Geospace Storm Over China and Ukraine

Chernogor

Zheng

Guo

et al. 2022

Springer Proceedings in Earth and Environmental Sciences

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Ionospheric storm effects over the People’s Republic of China on 14 May 2019: Results from multipath multi-frequency oblique radio sounding

Cited by 26 publications

References 39 publications

Dynamic processes in the magnetic field and in the ionosphere during the 30 August–2 September, 2019 geospace storm

Dynamic processes in the magnetic field and in the ionosphere during the 30 August–2 September, 2019 geospace storm

Dynamic processes in the magnetic field and in the ionosphere during the 30 August–2 September 2019 geospace storm: influence on high frequency radio wave characteristics

Features of Ionospheric and Magnetic Effects of August 5–6, 2019 Noticeable Geospace Storm Over China and Ukraine

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