Results 51 to 60 of about 23,807 (281)

Uncovering the Generation Mechanism of Low‐Frequency Chorus Waves (<0.1 fce_eq ${\boldsymbol{f}}_{\mathbf{c}\mathbf{e}\mathbf{\_}\mathbf{e}\mathbf{q}}$) During Active Geomagnetic Environments

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract Low‐frequency chorus waves (below 0.1 fce_eq ${f}_{\text{ce}\_\text{eq}}$, where fce_eq ${f}_{\text{ce}\_\text{eq}}$ is equatorial electron gyrofrequency) can induce the depletion of relativistic electrons in Earth's radiation belts by effective pitch angle scattering, demonstrating distinct effects on radiation belt dynamics compared to ...
Xuan Zhou, Xinliang Gao, Dedong Wang, Jiuqi Ma, Quanming Lu   +4 more
wiley   +1 more source

Study on the Thermospheric Density Distribution Pattern during Geomagnetic Activity

Applied Sciences, 2023
The atmospheric density of the thermosphere is a fundamental parameter for spacecraft launch and orbit control. Under magnetic storm conditions, the thermospheric atmospheric density experiences significant fluctuations, which have a negative impact on ...
Lirong Yin, Lei Wang, Lijun Ge, Jiawei Tian, Zhengtong Yin, Mingzhe Liu, Wenfeng Zheng   +6 more
doaj   +1 more source

Modelling the effects of space weather at the Earth’s surface : a UK geoelectric field model [PDF]

, 2004
Geomagnetically Induced Currents (GIC), which can flow in technological systems such as power transmission grids, are a consequence of the geoelectric field induced at the surface of the Earth during geomagnetic storms.
Clarke, Ellen, McKay, Allan, Reay, Sarah, Thomson, Alan   +3 more
core  

First Observation of Banded Electron Cyclotron Harmonic Waves at Earth's Magnetopause

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract This letter presents the first observation of banded Electron Cyclotron Harmonic (ECH) waves by Magnetospheric Multiscale (MMS) satellites near the Earth's subsolar magnetopause. The observation shows the fundamental mode (n=1 $n=1$) and its higher harmonics (n=2 $n=2$–6), each with distinct lower and upper bands separated by a spectral gap at
Shubhangi Lagad, Amar Kakad, Bharati Kakad, Peter H. Yoon   +3 more
wiley   +1 more source

Importance and challenges of geomagnetic storm forecasting

Frontiers in Astronomy and Space Sciences
Space weather prediction is a central focus of solar-terrestrial studies, with forecasts of geomagnetic storms deemed critical due to their significant practical implications.
Olga Khabarova, Colin Price
doaj   +1 more source

Real-time ISEE data system [PDF]

, 1979
A real-time ISEE data system directed toward predicting geomagnetic substorms and storms is discussed. Such a system may allow up to 60+ minutes advance warning of magnetospheric substorms and up to 30 minute warnings of geomagnetic storms (and other ...
Baker, D. N., Tsurutani, B. T.
core   +1 more source

Bursty Precipitation of Relativistic Electrons Unveiled by CIRBE/REPTile‐2 Measurements and Their Physical Implications

AGU Advances, Volume 7, Issue 1, February 2026.
Abstract Energetic electron precipitation plays a pivotal role in shaping Earth's radiation belt dynamics and drives significant physical and chemical changes in the upper atmosphere. However, the detailed mechanisms governing the loss of relativistic electrons have remained unclear, largely due to the limited energy coverage and coarse resolution of ...
Zheng Xiang, Xinlin Li, Daniel N. Baker, Qianli Ma, Yang Mei, Declan O’Brien, Hong Zhao, David Brennan, Theodore Sarris, Yoshizumi Miyoshi, Yoshiya Kasahara, Takefumi Mitani, Takeshi Takashima, Michael A. Temerin   +13 more
wiley   +1 more source

Dynamics and spatio-temporal distribution of geomagnetic disturbances during periods of increased solar activity and magnetic storms [PDF]

E3S Web of Conferences, 2020
A detailed spatio-temporal analysis of magnetic data was performed during the periods of magnetic storms on October 02, 2013 and September 27, 2019 based on measurements of the station network.
Mandrikova Oksana, Rodomanskay Anastasia
doaj   +1 more source

A density-temperature description of the outer electron radiation belt during geomagnetic storms [PDF]

, 2009
Bi-Maxwellian fits are made to energetic-electron flux measurements from seven satellites in geosynchronous orbit, yielding a number density (n) and temperature (T) description of the outer electron radiation belt.
Baker, Belian, Birn, Borovsky, Borovsky, Borovsky, Borovsky, Borovsky, Borovsky, Borovsky, Borovsky, Callis, Cayton, Chen, Clilverd, Denton, Denton, Denton, Denton, Denton, Denton, Dessler, Elphic, Freeman, Friedel, Georgieva, Green, Green, Hudson, Jian, Joseph E. Borovsky, Kavanagh, Kim, King, Lavraud, Li, Liemohn, Lindsay, Longden, Mann, McComas, McPherron, McPherron, Meredith, Michael H. Denton, Millan, Nagai, O'Brien, Onsager, Onsager, Onsager, Paulikas, Pesnell, Pierrard, Reeves, Rodger, Roederer, Roldugin, Rufenach, Russell, Sandanger, Seppälä, Sinnhuber, Smith, Sojka, Summers, Summers, Thomas E. Cayton, Thomsen, Tsurutani, Turner, Wilken, Wrenn, Zaharia, Zhang   +74 more
core   +2 more sources

Applying Hpo Indices to Empirical Thermospheric Density Models During Geomagnetic Storms

Earth and Space Science, Volume 13, Issue 2, February 2026.
Abstract Accurate atmospheric drag modeling is essential for precise orbit determination and prediction of Low Earth Orbit satellites. A key component is the thermospheric density, typically estimated using empirical models driven by geomagnetic activity indices such as the 3‐hr Kp or ap.
Kemin Zhu, Jizhang Sang, Xianjie Li, Lei Liu, Yangbo Qian, Shengfu Xia   +5 more
wiley   +1 more source