Results 171 to 180 of about 7,331 (246)

Response of Topside Ionospheric Electron Density During Solar Flares Using 2014–2024 Swarm Satellite Measurements

open access: yesGeophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract This paper presents a global statistical investigation into the topside ionosphere electron density response to X‐class solar flares during geomagnetically quiet conditions (Kp ≤ $\mathit{\le }$ 2) using Swarm satellites (462–511 km) data from 2014 to 2024.
Kenny Palo Monontsi   +3 more
wiley   +1 more source

On the Geomagnetic Sd Field

open access: yesJournal of geomagnetism and geoelectricity, 1959
openaire   +2 more sources

First Report of Rising‐Tone EMIC Waves Driven by the Magnetosheath High‐Speed Jet

open access: yesGeophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Magnetosheath high‐speed jets (HSJs) are pervasive transient structures with enhanced dynamic pressure in the terrestrial magnetosheath and can exert notable local impacts on the magnetopause. Although various geoeffects have been reported to be associated with HSJs, whether HSJs can drive the generation of electromagnetic ion cyclotron (EMIC)
Wentian Lei   +6 more
wiley   +1 more source

Controlling of the F Region Plasma Structures by the E Region Conductance in the Auroral Ionosphere

open access: yesGeophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract At high latitudes, the E and F regions of the ionosphere are strongly coupled through nearly vertical magnetic field lines. To simultaneously and directly relate the E and F regions' plasma structures, we ran a coordinated conjunction campaign between Swarm satellites and Incoherent Scatter Radar in Tromsø, Norway, during a moderate ...
Yaqi Jin   +12 more
wiley   +1 more source

Electrical Conductivity of Hydrous Ultramafic Melts With Implications for Origin of Low Velocity Layer Atop of the 410 km Seismic Discontinuity

open access: yesGeophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Low‐velocity layers (LVLs) above the 410‐km discontinuity are commonly attributed to partial melt generated by dehydration melting when hydrous mantle transition‐zone material rises into the upper mantle, where water solubility in nominally anhydrous minerals decreases.
Takashi Yoshino, Longjian Xie
wiley   +1 more source

Enhancement of Dayside Westward Electrojet: Triggering Conditions and Current Closures

open access: yesGeophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Geomagnetic substorms are a major path for energy storage and release in the magnetosphere, which typically occur in the midnight sector with a strong enhancement of westward electrojets. However, by analyzing 37,940 events from a substorm list, about 3% of events unexpectedly initiated in the noon sector.
Haobo Fu   +5 more
wiley   +1 more source

Residual Magnetization Accumulation Enables Rapid Pre‐Polarized Surface NMR Groundwater Detection

open access: yesGeophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Surface nuclear magnetic resonance (SNMR) directly detects subsurface water, but its field application is constrained by the trade‐off between signal enhancement and survey throughput. Conventional pre‐polarization strengthens SNMR signals but requires long polarization pulses that markedly prolong acquisition. Here we show that repeated short
Xing Gao   +3 more
wiley   +1 more source

Ultra‐Low‐L Sub‐MeV Electron Microbursts During the May 2024 Super Storm

open access: yesGeophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract During the May 2024 super storm, we identified sub‐second microburst‐type relativistic electron precipitation events at McIlwain's L∼2 $L\sim 2$ in low‐Earth orbit using the Gamma‐ray Burst Monitor (CGBM) onboard the CALorimetric Electron Telescope on the International Space Station.
Miki Kurihara   +16 more
wiley   +1 more source

Transduction of the Geomagnetic Field as Evidenced from alpha-Band Activity in the Human Brain. [PDF]

open access: yeseNeuro, 2019
Wang CX   +9 more
europepmc   +1 more source

State of the Geomagnetic Field

open access: yes, 2023
National Centers for Environmental Information (U.S.)   +1 more
openaire   +1 more source

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