Results 61 to 70 of about 1,626 (204)

Statistical Survey of Cosmic Noise Absorption in Conjunction With Plasma Wave Measurements

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract Using a decade of observations from the Canadian Geospace Observatory Riometer Network (GO‐RIO), we selected an east‐west subset of stations near L∼7 $L\sim 7$ to classify cosmic noise absorption (CNA) (a proxy for enhanced D‐region ionization) into two morphologies, simultaneous and drifting, based on the relative timing of signals across the
R. Ghaffari, C. M. Cully, E. Spanswick, R. A. D. Fiori   +3 more
wiley   +1 more source

Guiding of whistler-mode waves with frequencies above one half of the gyrofrequency in the magnetosphere [PDF]

Serbian Astronomical Journal, 1999
Ray-tracing calculations show that a trough, L = 4.6, located in the region outside the plasmapause is capable to guide whistler-mode waves in frequency range 0.5fBmin−0.64fBmin, from one hemisphere to the other.
Šulić D.M.
doaj   +1 more source

Model study of plasmapause motion [PDF]

Journal of Geophysical Research, 1970
The ambient plasma in the equatorial plane is predominantly subject to the E×B drift. By approximating the earth's magnetic field by a dipole, characteristic steady state streamlines in the equatorial plane are determined, assuming the interaction between the solar wind and the magnetosphere is characterized by a constant electric field directed from ...
openaire   +1 more source

Saturn's Plasmapause: Signature of Magnetospheric Dynamics [PDF]

Journal of Geophysical Research: Space Physics, 2019
AbstractWe explore the paradigm that Saturn's plasmapause marks the boundary between the magnetic flux tubes that have been circulating around the planet for some time, accumulating a dense load of Enceladus‐sourced material, and those that have recently undergone tail reconnection, shedding the bulk of the cold plasma and retaining a more tenuous ...
M.F. Thomsen, A.J. Coates
openaire   +2 more sources

Sensitivity of Bounce‐Averaged Diffusion Coefficients to the Latitudinal Variability of Lightning Generated Whistlers

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract The development of statistical wave models that include the underlying variability of the wave distributions is an important next step toward more accurate radiation belt models. Lightning‐generated whistlers (LGW) are an important wave mode in the plasmasphere; previous time‐averaged diffusion coefficients have used assumptions about the wave
Alexander D. Shane, Robert A. Marshall, Qianli Ma   +2 more
wiley   +1 more source

Arase/LEPi Observations of Low‐Energy H+ and O+ Ion Fluxes in the Inner Magnetosphere: Implications for the Relationship Between Warm Plasma Cloak and Oxygen Torus

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract We investigated the spatial distributions and pitch‐angle distributions of 30–300 eV H+ and O+ ion fluxes using data obtained by the low‐energy particle experiments‐ion mass analyzer (LEPi) onboard the Arase satellite. A statistical analysis over 3.7 years reveals that the H+ ion flux is enhanced at L > 4 from the premidnight sector through ...
Masahito Nosé, Kazushi Asamura, Yoshizumi Miyoshi, Jih‐Hong Shue, Trunali Shah, Ayako Matsuoka, Mariko Teramoto, Kazuhiro Yamamoto, Atsushi Kumamoto, Fuminori Tsuchiya, Yoshiya Kasahara, Atsuki Shinbori, Iku Shinohara   +12 more
wiley   +1 more source

Plasmaspheric depletion, refilling and plasmapause dynamics: A coordinated ground-based and IMAGE satellite study [PDF]

, 2006
Ozeke, L.G., Menk, F.W., Mann, I.R., Goldstein, J., Dent, Z.C.   +4 more
core   +4 more sources

Guiding Medium Radio Waves in the Magnetosphere: Features and Geophysical Conditions

Atmosphere
We present experimental results related to the features and geophysical conditions for the occurrence of the long-delay echo (LDE) signals in the medium-wave (MW) frequency range observed on 20 January 2025, at the Gor’kovskaya observatory near St ...
Alexey S. Kalishin, Natalia F. Blagoveshchenskaya, Tatiana D. Borisova, Ivan M. Egorov, Gleb A. Zagorskiy, Anna O. Mingaleva   +5 more
doaj   +1 more source

Range finding of Alfvén oscillations and direction finding of ion-cyclotron waves by using the ground-based ULF finder [PDF]

Annales Geophysicae, 1997
A new approach to the problem of direction and distance finding of magnetospheric ULF oscillations is described. It is based on additional information about the structure of geoelectromagnetic field at the Earth's surface which is contained in the ...
A. Guglielmi, J. Kangas, D. Milling, D. Orr, O. Pokhotelov   +4 more
doaj   +1 more source

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

Geophysical 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, Satoshi Nakahira, Ryuho Kataoka, Yoshizumi Miyoshi, Yuto Katoh, Kazutaka Yamaoka, Yuta Kawakubo, Ken Ebisawa, Shoji Torii, Kazuhiro Yamamoto, Atsuki Shinbori, Shoya Matsuda, Yoshiya Kasahara, Fuminori Tsuchiya, Iku Shinohara, Lauren W. Blum, Alessandro Bruno   +16 more
wiley   +1 more source