Results 1 to 10 of about 2,132 (166)

The variable source of the plasma sheet during a geomagnetic storm [PDF]

Nature Communications, 2023
Both solar wind and ionospheric sources contribute to the magnetotail plasma sheet, but how their contribution changes during a geomagnetic storm is an open question.
L. M. Kistler, K. Asamura, S. Kasahara, Y. Miyoshi, C. G. Mouikis, K. Keika, S. M. Petrinec, M. L. Stevens, T. Hori, S. Yokota, I. Shinohara   +10 more
doaj   +2 more sources

Unexpected major geomagnetic storm caused by faint eruption of a solar trans-equatorial flux rope [PDF]

Nature Communications
Some geomagnetic storms’ solar origins are ambiguous, making them hard to predict. On March 23, 2023, a severe geomagnetic storm occurred, however, forecasts based on remote-sensing observations failed to predict it.
Weilin Teng, Yingna Su, Haisheng Ji, Qingmin Zhang   +3 more
doaj   +2 more sources

Potential of Regional Ionosphere Prediction Using a Long Short‐Term Memory Deep‐Learning Algorithm Specialized for Geomagnetic Storm Period

Space Weather, 2021
In our previous study (Moon et al., 2020, https://doi.org/10.3938/jkps.77.1265), we developed a long short‐term memory (LSTM) deep‐learning model for geomagnetic quiet days (LSTM‐quiet) to perform effective long‐term predictions for the regional ...
Se Heon Jeong, Jong-Yeon Yun, Yongha Kim   +2 more
exaly   +2 more sources

Significant Variations of Thermospheric Nitric Oxide Cooling during the Minor Geomagnetic Storm on 6 May 2015

Universe, 2022
Using observations by the SABER (Sounding of the Atmosphere using Broadband Emission Radiometry) instrument on board the TIMED (Thermosphere-Ionosphere-Mesosphere Energetics and Dynamics) satellite and simulations by the TIEGCM (Thermosphere-Ionosphere ...
, Hua Zhang, Xiaojun Xu
exaly   +3 more sources

Analysis of the Occurrence of the First Most Intense Geomagnetic Storm (G4) to Hit the Earth in Solar Cycle 25; A Multiple-Step Geomagnetic Storm [PDF]

Physics Access, 2023
A study of the occurrence of the first intense Geomagnetic storm (G4) to hit the Earth since the start of the Solar Cycle 25 is carried out. This study analyzed the Geomagnetic Storm that occurred between the 28th of October and the 7th of November 2021.
Hammed A Lawal, Mukhtar I Muhammed
doaj   +1 more source

Magnetospheric chaos and dynamical complexity response during storm time disturbance [PDF]

Nonlinear Processes in Geophysics, 2021
In this study, we examine the magnetospheric chaos and dynamical complexity response to the disturbance storm time (Dst) and solar wind electric field (VBs) during different categories of geomagnetic storm (minor, moderate and major geomagnetic storm ...
I. A. Oludehinwa, O. I. Olusola, O. S. Bolaji, O. S. Bolaji, O. O. Odeyemi, A. N. Njah   +5 more
doaj   +1 more source

Characteristics of Low-Latitude Ionosphere Activity and Deterioration of TEC Model during the 7–9 September 2017 Magnetic Storm

Atmosphere, 2022
Under the influence of space weather, abnormal disturbances in the ionosphere will distort the ionosphere model seriously and affect the global navigation satellite system negatively.
Jianfeng Li, Yongqian Wang, Shiqi Yang, Fang Wang   +3 more
doaj   +1 more source

Morphology in the total electron content under geomagnetic disturbed conditions: results from global ionosphere maps [PDF]

Annales Geophysicae, 2007
Using 8-year global ionosphere maps (GIMs) of TEC products from the Jet Propulsion Laboratory (JPL), we make a statistical study on the morphology of the global ionospheric behaviors with respect to the geomagnetic disturbances.
Z. Biqiang, W. Weixing, L. Libo, M. Tian, M. Tian, M. Tian   +5 more
doaj   +1 more source

Statistical study and corresponding evolution of plasmaspheric plumes under different levels of geomagnetic storms [PDF]

Annales Geophysicae, 2022
Using observations of Van Allen Probes, we present a statistical study of plasmaspheric plumes in the inner magnetosphere. Plasmaspheric plumes tend to occur during the recovery phase of geomagnetic storms.
H. Li, T. Fu, R. Tang, R. Tang, Z. Yuan, Z. Yang, Z. Ouyang, X. Deng   +7 more
doaj   +1 more source

A study of geomagnetic storms [PDF]

Geophysical Journal International, 1978
The interplanetary energy flux is estimated on the basis of the Poynting flux and its variations with the rate of energy dissipation in terms of: (1) the ring-current particle injection, (2) Joule dissipation in the ionosphere, and (3) auroral particle injection for 15 major geomagnetic storms.
Paul Perreault, S.-I. Akasofu
openaire   +1 more source