Results 51 to 60 of about 114,060 (217)

Chorus Element Repetition: Roles of Energetic Electron Injection and Nonlinear Wave Growth

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Chorus waves are coherent whistler‐mode emissions in Earth’s magnetosphere and play a key role in the acceleration and loss of radiation belt electrons. Their spectra commonly consist of discrete and repetitive elements, yet the mechanism governing this repetition is not fully understood.
Huayue Chen, Xueyi Wang, Lunjin Chen, Jiabei He, Zhiyang Xia, Rui Chen   +5 more
wiley   +1 more source

The ultra-fast Kelvin waves in the equatorial ionosphere: observations and modeling [PDF]

Annales Geophysicae, 2013
The main purpose of this study is to investigate the vertical coupling between the mesosphere and lower thermosphere (MLT) region and the ionosphere through ultra-fast Kelvin (UFK) waves in the equatorial atmosphere.
A. N. Onohara, I. S. Batista, H. Takahashi   +2 more
doaj   +1 more source

Equatorial ionospheric bubble precursor [PDF]

Geophysical Research Letters, 2010
A time‐dependent nonlinear three‐dimensional model for the evolution of the equatorial bottomside lower ionosphere in the presence of dissipating gravity waves has been developed. From the numerical solution of the model, it is found that large bottomtype F‐region ionospheric density perturbations and electric fields can be driven by dissipating ...
openaire   +1 more source

New Electron Population Trapped at Low Latitudes Near Jupiter

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract We report observations of a low energy (<2 keV), trapped electron population near Jupiter's magnetic equator made by the Jovian Auroral Distributions Experiment (JADE) on Juno. Electron intensity peaks around the location of the minimum magnetic field magnitude along the field line that is connected to Juno.
F. Allegrini, P. Kollman, R. W. Ebert, J. R. Szalay, G. Clark, P. Louarn, D. J. McComas, P. Valek, S. J. Bolton   +8 more
wiley   +1 more source

Response of the equatorial ionosphere to the geomagnetic DP 2 current system

Geophysical Research Letters, 2016
The response of equatorial ionosphere to the magnetospheric origin DP 2 current system fluctuations is examined using ground‐based multiinstrument observations.
E. Yizengaw, M. B. Moldwin, E. Zesta, M. Magoun, R. Pradipta, C. M. Biouele, A. B. Rabiu, O. K. Obrou, Z. Bamba, E. R. dePaula   +9 more
doaj   +1 more source

Impacts of Mid‐Latitude Ionospheric Dynamics on RF Applications During the November 2025 Superstorm Event

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract This study demonstrates the intriguing and complex interplay among auroral precipitation, enhanced TEC, density irregularities, and amplitude scintillations observed during the November 2025 superstorm. For the first time, we present observations of strong amplitude scintillation across continental United States (CONUS)—nearly from coast to ...
E. Yizengaw, W. Younas, Y. Nishimura, C. Gabrielse, T. Beach, A. J. Coster, R. Pradipta, K. M. Groves   +7 more
wiley   +1 more source

Modeling the Jovian magnetosphere under an antiparallel interplanetary magnetic field from a global MHD simulation

Earth and Planetary Physics, 2018
We present preliminary results of a new global Magnetohydrodynamics (MHD) simulation model of the Jovian magnetosphere. The model incorporates mass loading from Jupiter's satellite Io, the planet's fast corotation, and electrostatic coupling between its ...
YuXian Wang, XiaoCheng Guo, BinBin Tang, WenYa Li, Chi Wang   +4 more
doaj   +1 more source

The intermediate layers and associated tidal motions observed by a digisonde in the equatorial anomaly region [PDF]

Annales Geophysicae, 2003
This investigation presents an initial attempt to analyze a full year of daily ionosonde observations relevant to the determination of plasma densities, tidal structures, and ion transports in the equatorial anomaly region of the lower ionosphere.
C.-C. Lee, J.-Y. Liu, J.-Y. Liu, C.-J. Pan, H.-H. Hsu   +4 more
doaj   +1 more source

Numerical Investigations of Low‐Latitude Ground Magnetic Fields Due To Cavity Mode Oscillations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract Pi2 oscillations are known to be associated with cavity mode oscillations (CMOs) in the inner magnetosphere at low latitudes. CMOs can also be excited by interplanetary shocks on the dayside. We present results from a global linear MHD wave model in spherical coordinates that allows us to analyze these waves at equatorial latitudes.
K. Majmudar, R. L. Lysak, K. Takahashi
wiley   +1 more source

Dynamic Expansion and Merging of the Equatorial Ionization Anomaly During the 10–11 May 2024 Super Geomagnetic Storm

Remote Sensing
This study investigates the responses of the equatorial and low-latitude ionosphere in the American–Atlantic longitude sector during the super geomagnetic storm that occurred on 10–11 May 2024.
Ercha Aa, Yanhong Chen, Bingxian Luo
doaj   +1 more source