Results 91 to 100 of about 241,838 (223)

Quasi 6‐Day Wave Variability in the Thermosphere and Ionosphere: Observations and Modeling

Earth and Space Science, Volume 13, Issue 9, September 2026.
Abstract Satellite observations of the upper mesosphere and lower thermosphere from TIMED‐SABER and ICON‐MIGHTI reveal a clear Quasi 6‐Day Wave (Q6DW) event in the winds and temperatures in this region. This Q6DW event persists across multiple data sets throughout the middle‐to‐upper thermosphere and the F‐region ionosphere, including GOLD disk ...
Oluwafisayo P. Owolabi, Scott L. England, Yen‐Jung Wu   +2 more
wiley   +1 more source

How Does the Definition of a Geomagnetic Storm Affect the Contents of the Resulting Storm List?

Space Weather
A geomagnetic storm is a significant and prolonged disturbance of the Earth's magnetic field caused by an enhancement of the ring current. Storms are typically identified using magnetic field measurements from multiple ground‐based magnetometers, and the
Atlas M. Patrick, John C. Coxon, Sarah N. Bentley, Maria‐Theresia Walach, Kyle R. Murphy, I. Jonathan Rae, Isobel S. Lockley   +6 more
doaj   +1 more source

Statistical Scale Analyses of a Diurnal Periodicity in Auroral Kilometric Radiation, Observed by Wind/WAVES

Journal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract The Earth's strongest natural radio emission is Auroral Kilometric Radiation (AKR), which is correlated with auroral intensity, and is a barometer for space weather. AKR is generated by the electron cyclotron maser instability, with sources on auroral field lines. Previous work on AKR and radio emissions from other planets (or stars) points to
Alexandra Ruth Fogg, S. Wu, C. M. Jackman, S. J. Walker, M. J. Rutala, C. K. Louis, S. M. Ivanov, L. Lamy, J. E. Waters, D. K. Whiter   +9 more
wiley   +1 more source

Can Solar Cyclic Variability Mimic Extreme Solar Particle (Miyake) Events in Radiocarbon?

Journal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract Rapid, strong enhancements in Δ14 ${{\Delta }}^{14}$C in the Earth's atmosphere, known as Miyake events, rarely occurred over the past millennia, pointing to major radiation storms affecting Earth. They are produced by extreme solar particle events (ESPEs) and are separated by an order‐of‐magnitude gap in the strength from directly observed ...
Ilya Usoskin, Fusa Miyake, Kseniia Golubenko   +2 more
wiley   +1 more source

High-latitude geomagnetically induced current events observed on very low frequency radio wave receiver systems [PDF]

, 2010
Noise burst events observed at Sodankylä, Finland, in the frequency range 20–25 kHz during January–April 2005 last up to 4 s, occur more often at midnight, are associated with high geomagnetic activity, and exhibit a quasi-constant amplitude perturbation
Dietrich, Sarah, Raita, Tero, Clarke, Ellen, Thomson, Alan W.P., Rodger, Craig J., Clilverd, Mark A., Ulich, Thomas, Kavanagh, Andrew J.   +7 more
core   +1 more source

The 10 October 2024 geomagnetic storm may have caused the premature reentry of a Starlink satellite

Frontiers in Astronomy and Space Sciences
In this short communication, we qualitatively analyze possible effects of the 10 October 2024 geomagnetic storm on accelerating the reentry of a Starlink satellite from very low-Earth orbit (VLEO). The storm took place near the maximum of solar cycle (SC)
Denny M. Oliveira, Denny M. Oliveira, Eftyhia Zesta, Dibyendu Nandy, Dibyendu Nandy   +4 more
doaj   +1 more source

Impacts of Neutral Wind‐Driven Currents on Geomagnetic Disturbances and Magnetospheric Dynamics During the May 2024 Storm

Journal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract The neutral wind dynamo generates ionospheric currents that can significantly affect high‐latitude electrodynamics during geomagnetic storms, yet its role in global magnetosphere‐ionosphere coupling is often underrepresented. We quantify the impact of wind‐driven currents on geomagnetic disturbances (GMDs) and magnetospheric dynamics during ...
Yu Hong, Yue Deng, Cheng Sheng, Daniel Welling, Colin Waters   +4 more
wiley   +1 more source

Modeling Kinetic Reconnection Onset in Global Magnetospheric Simulations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract We investigate the onset of magnetic reconnection in Earth's magnetotail using a coupled magnetohydrodynamic with embedded particle‐in‐cell (MHD‐EPIC) model, which self‐consistently links global magnetospheric dynamics to electron‐scale kinetic processes. Unlike standalone kinetic simulations with idealized boundary conditions, reconnection in
Talha Arshad, Yuxi Chen, Gabor Toth
wiley   +1 more source

The Probability of the May 2024 Geomagnetic Superstorm

Space Weather
In May 2024, a series of coronal mass ejections resulted in the first “severe” (G4‐level) geomagnetic storm watch in nearly 20 years. This event evolved into a significant space weather event, including an “extreme” (G5) geomagnetic storm, moderate (S2 ...
S. Elvidge, D. R. Themens
doaj   +1 more source

Distinct Groundwater Regimes in West Antarctic Sedimentary Basins Inferred From Magnetotelluric Imaging

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract Subglacial sedimentary basins in Antarctica are hypothesized to modulate ice flow and biogeochemical cycles via groundwater and geothermal feedbacks, yet their properties remain poorly constrained. Here, we present a joint quantitative analysis of new magnetotelluric (MT) data acquired at Thwaites Glacier (TG) and WAIS Divide, alongside legacy
Siobhan F. Killingbeck, Bernd Kulessa, Rebecca Pearce, Alex Brisbourne, Louise Borthwick, Felipe Napoleoni, Sridhar Anandakrishnan, Martyn Unsworth, Atsuhiro Muto   +8 more
wiley   +1 more source