Results 211 to 220 of about 210,460 (345)

The Role of Downward Plasma Diffusion in the Ionospheric Nighttime Weddell Sea Anomaly

open access: yesGeophysical Research Letters, Volume 52, Issue 11, 16 June 2025.
Abstract This study investigates the role of downward plasma diffusion in the ionospheric nighttime Weddell Sea Anomaly (WSA), characterized by an anomalous diurnal electron density peak in nighttime from the South Pacific to South America. Traditionally attributed to prolonged photoionization and ionospheric uplift during summer, the WSA is not ...
Quan‐Han Li   +6 more
wiley   +1 more source

Solar Terminator Waves Revealed as Dominant Features of Upper Thermospheric Density

open access: yesGeophysical Research Letters, Volume 52, Issue 11, 16 June 2025.
Abstract Observations of solar terminator waves (STWs) in thermospheric mass density (TMD) measurements above 500 km reveal STWs as dominant features of the upper thermosphere. While previous investigations have shown that STWs in the middle‐lower thermosphere have amplitudes on the order of 6%–8% of the background TMD in that region, this study shows ...
D. J. Fitzpatrick   +3 more
wiley   +1 more source

Nonlinear Proton Dynamics in the Formation of Rising‐Tone EMIC Wave Subpackets

open access: yesGeophysical Research Letters, Volume 52, Issue 11, 16 June 2025.
Abstract Electromagnetic ion cyclotron (EMIC) waves are commonly observed in the Earth's magnetosphere and play a significant role in regulating relativistic electron fluxes. The waveform of EMIC waves comprises amplitude‐modulated wave packets, known as “subpackets.” Despite their prevalence, the underlying physics and associated particle dynamics for
Huayue Chen   +10 more
wiley   +1 more source

Plasma structuring within an expanded polar cap and cusp studied with the SS-520-3 sounding rocket. [PDF]

open access: yesEarth Planets Space
Buschmann LM   +12 more
europepmc   +2 more sources

A Global View of the Impact of Magnetosphere‐Ionosphere‐Atmosphere Coupling on Wave Driven Precipitation and Conductance

open access: yesGeophysical Research Letters, Volume 52, Issue 11, 16 June 2025.
Abstract This manuscript utilizes the global survey of electron precipitation due to chorus and hiss waves based on waves and electron flux measurements made by Van Allen Probes. To analyze the loss‐cone precipitation presented in these papers, we compared electron energy fluxes and their mean energies entering the ionospheric altitudes on the global ...
George V. Khazanov   +3 more
wiley   +1 more source

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