Results 51 to 60 of about 643,536 (161)

Abrupt Disappearance of Plasmaspheric Hiss Inside the Magnetic Dip

Geophysical Research Letters
Plasmaspheric hiss plays an important role in radiation belt electron dynamics, and its excitation and propagation have long attracted attention. During a substorm, Van Allen Probe B observed the disappearance of plasmaspheric hiss at the magnetic dip ...
Yan Zhuang, Chao Yue, Shan Wang, Haimeng Li, Sibo Xu, Xu‐Zhi Zhou, Qiu‐Gang Zong   +6 more
doaj   +1 more source

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

Statistical investigation of the frequency dependence of the chorus source mechanism of plasmaspheric hiss [PDF]

, 2021
We use data from eight satellites to statistically examine the role of chorus as a potential source of plasmaspheric hiss. We find that the strong equatorial (|λm| < 6o) chorus wave power in the frequency range 50 < f < 200 Hz does not extend to high ...
Nigel P. Meredith, Jacob Bortnik, Shen, Xiao-Chen, Xiao‐Chen Shen, Richard B. Horne, Wen Li, Meredith, Nigel P., Horne, Richard B., Li, Wen, Bortnik, Jacob   +9 more
core   +1 more source

Frequency‐Drifting Plasmaspheric Hiss: A Statistical Study From the Van Allen Probes Data

Geophysical Research Letters
Plasmaspheric hiss, a whistler‐mode emission confined in the high‐density plasmasphere, is of great interest to the space community attributed to its important role in inner magnetospheric dynamics.
Siyang Yi, Nigang Liu, Yi Xie, Zhaoguo He, Jiang Yu, Jun Cui   +5 more
doaj   +1 more source

Ray Tracing Method in a General Non‐Dipole Magnetic Field

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract We present a new general mathematical formulation of the Eikonal equations for ray tracing, which can use any internal magnetic field model. The analytical and tractable expressions are conveniently based on a vector formalism, which is independent of any coordinate system.
P.‐L. Blelly, J.‐F. Ripoll, A. Dubois, R. B. Horne, A. Marchaudon   +4 more
wiley   +1 more source

The Species‐ and Energy‐Dependent Effects of EMIC Waves on Ring Current Ions

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract Wave‐particle interactions are a major mechanism responsible for dissipating energy and redistributing particles within geospace. This study investigates the effects of electromagnetic ion cyclotron waves on ring current ions. We present a case study of the effects of EMIC waves on the ring current during the 15 August 2015 geomagnetic storm ...
Cristian P. Ferradas, Suk‐Bin Kang, Mei‐Ching Fok, Gonzalo Cucho‐Padin, Maria Usanova, Bhanu Remya   +5 more
wiley   +1 more source

Quantification of Energetic Electron Precipitation Driven by Plume Whistler Mode Waves, Plasmaspheric Hiss, and Exohiss [PDF]

Geophysical Research Letters, 2019
AbstractWhistler mode waves are important for precipitating energetic electrons into Earth's upper atmosphere, while the quantitative effect of each type of whistler mode wave on electron precipitation is not well understood. In this letter, we evaluate energetic electron precipitation driven by three types of whistler mode waves: plume whistler mode ...
W. Li, X.‐C. Shen, Q. Ma, L. Capannolo, R. Shi, R. J. Redmon, J. V. Rodriguez, G. D. Reeves, C. A. Kletzing, W. S. Kurth, G. B. Hospodarsky   +10 more
openaire   +1 more source

Self‐Limiting of Artificial Electron Radiation Belts: Evidence From the Starfish Prime High‐Altitude Nuclear Explosion

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract The 1962 Starfish Prime high‐altitude 1.4‐megaton nuclear detonation injected large amounts of fission‐produced energetic electrons into the inner magnetosphere (L = 1.12), creating an intense artificial radiation belt that persisted for years. In this study, we revisit historical data from this unprecedented event to investigate the potential
L. Olifer, I. R. Mann
wiley   +1 more source

Highly anisotropic distribution of energetic electrons and triggered VLF emissions

, 2001
The work considers the highly anisotropic electron distribution functions observed by Bell and co-workers at Stanford in the magnetosphere. IOt is maintained that Bells' observations provide evidence for the existence of step like deformations in ...
Titova, EE, Nunn, D, Demekhov, AG, Rycroft, MJ, Trakhtengerts, VY, Kozelov, BV, Pasmanik, DL   +6 more
core   +1 more source

Local Evolution of a Prenoon Drainage Plume

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract Plasmaspheric drainage plumes are typically observed in the postnoon sector during geomagnetic storms, but their local evolution in the prenoon sector remains poorly understood. Here, we report in situ observations from the Van Allen Probe, revealing multiple localized enhancements in cold electron density near apogee in the prenoon sector ...
Suk‐Bin Kang, Mei‐Ching Fok, Cristian Ferradas, Alex Glocer, Megha Pandya, J. D. Huba   +5 more
wiley   +1 more source