scholarly journals Parameters of large-scale TEC disturbances during the strong magnetic storm on 29 October 2003

2008 ◽  
Vol 113 (A3) ◽  
pp. n/a-n/a ◽  
Author(s):  
N. P. Perevalova ◽  
E. L. Afraimovich ◽  
S. V. Voeykov ◽  
I. V. Zhivetiev
Keyword(s):  
Magnetic Storm ◽  
Large Scale ◽  
Strong Magnetic Storm

scholarly journals Multi-Scale Ionospheric Anomalies Monitoring and Spatio-Temporal Analysis during Intense Storm

Atmosphere ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 215
Author(s):  
Na Cheng ◽  
Shuli Song ◽  
Wei Li
Keyword(s):  
Magnetic Storm ◽  
Large Scale ◽  
Temporal Dynamics ◽  
Ionospheric Disturbance ◽  
Ionospheric Scintillation ◽  
Small Scale ◽  
Electron Content ◽  
Total Electron ◽  
Multi Scale ◽  
Intense Storm

The ionosphere is a significant component of the geospace environment. Storm-induced ionospheric anomalies severely affect the performance of Global Navigation Satellite System (GNSS) Positioning, Navigation, and Timing (PNT) and human space activities, e.g., the Earth observation, deep space exploration, and space weather monitoring and prediction. In this study, we present and discuss the multi-scale ionospheric anomalies monitoring over China using the GNSS observations from the Crustal Movement Observation Network of China (CMONOC) during the 2015 St. Patrick’s Day storm. Total Electron Content (TEC), Ionospheric Electron Density (IED), and the ionospheric disturbance index are used to monitor the storm-induced ionospheric anomalies. This study finally reveals the occurrence of the large-scale ionospheric storms and small-scale ionospheric scintillation during the storm. The results show that this magnetic storm was accompanied by a positive phase and a negative phase ionospheric storm. At the beginning of the main phase of the magnetic storm, both TEC and IED were significantly enhanced. There was long-duration depletion in the topside ionospheric TEC during the recovery phase of the storm. This study also reveals the response and variations in regional ionosphere scintillation. The Rate of the TEC Index (ROTI) was exploited to investigate the ionospheric scintillation and compared with the temporal dynamics of vertical TEC. The analysis of the ROTI proved these storm-induced TEC depletions, which suppressed the occurrence of the ionospheric scintillation. To improve the spatial resolution for ionospheric anomalies monitoring, the regional Three-Dimensional (3D) ionospheric model is reconstructed by the Computerized Ionospheric Tomography (CIT) technique. The spatial-temporal dynamics of ionospheric anomalies during the severe geomagnetic storm was reflected in detail. The IED varied with latitude and altitude dramatically; the maximum IED decreased, and the area where IEDs were maximum moved southward.

Peculiarities of the outer radiation belt dynamics during the strong magnetic storm of May 15, 2005

2007 ◽  
Vol 47 (6) ◽  
pp. 696-703 ◽  
Author(s):  
L. V. Tverskaya ◽  
E. A. Ginzburg ◽  
T. A. Ivanova ◽  
N. N. Pavlov ◽  
P. M. Svidsky
Keyword(s):  
Magnetic Storm ◽  
Radiation Belt ◽  
Outer Radiation Belt ◽  
Strong Magnetic Storm

Daytime geomagnetic disturbances at high latitudes during a strong magnetic storm of June 21–23, 2015: The storm initial phase

2016 ◽  
Vol 56 (3) ◽  
pp. 281-292 ◽  
Author(s):  
L. I. Gromova ◽  
N. G. Kleimenova ◽  
A. E. Levitin ◽  
S. V. Gromov ◽  
L. A. Dremukhina ◽  
...  
Keyword(s):  
Magnetic Storm ◽  
Initial Phase ◽  
High Latitudes ◽  
Geomagnetic Disturbances ◽  
Strong Magnetic Storm

scholarly journals Electron radiation belt dynamics during magnetic storms and in quiet time

2018 ◽  
Vol 4 (1) ◽  
pp. 51-60 ◽  
Author(s):  
Леонид Лазутин ◽  
Leonid Lazutin ◽  
Алексей Дмитриев ◽  
Aleksey Dmitriev ◽  
Алла Суворова ◽  
...  
Keyword(s):  
Electric Field ◽  
Magnetic Storm ◽  
Large Scale ◽  
Radiation Belt ◽  
Electron Flux ◽  
Continuous Series ◽  
Outer Electron ◽  
Quiet Time ◽  
Trapping Region ◽  
Individual Character

The paper discusses the dynamics of the outer electron belt, adiabatic and nonadiabatic mechanisms of replenishment and losses of energetic electrons. Under undisturbed conditions, the outer electron belt gradually empties: in the inner magnetosphere due to electron precipitation in the atmosphere and in the quasi-trapping region due to losses at the magnetopause because drift shells of electrons are not closed there. The latter process does not occur in normal years due to the masking replenishment by freshly accelerated particles, but in years of extremely low activity it leads to a significant decrease in the electron population of the belt. During the magnetic storm main phase, the first reason for the decrease in the electron flux intensity is the adiabatic cooling associated with conservation of adiabatic invariants and complemented by precipitation of electrons into the atmosphere and their dropout at the magnetopause. Electron flux increases involve EB electron injection by the induction electric field of substorm activation and by the large-scale solar wind electric field, with pitch energy diffusion along with adiabatic heating in the recovery phase. The rate of electron flux recovery after a storm is determined by the ratio of nonadiabatic increases and losses; hence the electron flux represents a continuous series from low to very high values. The combination of these processes determines the individual character of radiation belt development during each magnetic storm and the behavior of the belt in the quiet time.

Unusual spatial-temporal dynamics of geomagnetic disturbances during the main phase of the extremely strong magnetic storm of November 7–8, 2004

2006 ◽  
Vol 46 (5) ◽  
pp. 580-592 ◽  
Author(s):  
O. V. Kozyreva ◽  
N. G. Kleimenova ◽  
T. A. Kornilova ◽  
K. Kauriste ◽  
J. Manninen ◽  
...  
Keyword(s):  
Magnetic Storm ◽  
Temporal Dynamics ◽  
Main Phase ◽  
Geomagnetic Disturbances ◽  
Strong Magnetic Storm

Response of Hainan GPS ionospheric scintillations to the different strong magnetic storm conditions

2008 ◽  
Vol 41 (4) ◽  
pp. 579-586 ◽  
Author(s):  
S.P. Shang ◽  
J.K. Shi ◽  
P.M. Kintner ◽  
W.M. Zhen ◽  
X.G. Luo ◽  
...  
Keyword(s):  
Magnetic Storm ◽  
Strong Magnetic Storm ◽  
Ionospheric Scintillations
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