Results 91 to 100 of about 196,114 (210)

Variations of Mid‐Magnetotail Magnetic Pressure During Substorms

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract Magnetic reconnection is commonly observed in the mid‐tail plasma sheet during substorms, the mechanism behind this spatial preference, however, remains unsolved. This study focuses on magnetic pressure evolution within this critical region during substorms.
Xiaowei Ma, Hui Zhang, Huanzhi Yuan, Runze Li   +3 more
wiley   +1 more source

Observations of the Latitude and Frequency Distributions of Equatorward‐Propagating Chorus Waves

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract Rising‐tone chorus elements are traditionally known to grow from low frequencies and extend to high frequencies. Using high‐resolution waveform measurements from the Van Allen Probes, we report a novel observation: equatorward‐propagating chorus waves at a few degrees in latitude are observed at high frequencies only.
Qiushuo Wang, Jinxing Li, Jacob Bortnik, Donglai Ma, Jiabei He, Qianli Ma, Ning Kang, Lunjin Chen   +7 more
wiley   +1 more source

HF Heating Effects as Seen From Below and Above: First Results of Joint SURA–Ionosfera‐M Experiment

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract This paper presents the first results of a coordinated experiment on the ionospheric plasma response to high‐frequency (HF) overdense heating, conducted using the SURA heating facility and the Ionosfera‐M satellite. The experiment combined ground‐based observations with in situ satellite measurements, enabling a comprehensive study of ...
A. A. Chernyshov, A. M. Padokhin, S. M. Grach, D. A. Kogogin, A. V. Shindin, S. A. Pulinets, I. A. Nasyrov, A. B. Beletsky, I. D. Tkachev, J. K. Legostaeva, D. V. Chugunin, M. A. Evdokimova, G. A. Kurbatov, K. G. Tsybulya, A. E. Solin, A. V. Shchennikov, E. V. Tareeva, V. V. Emelyanov, M. M. Mogilevsky   +18 more
wiley   +1 more source

Global Cowling Effects in the Sq‐EEJ Current System Under Electrostatic Approximation: Theoretical Simulation

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract The solar quiet (Sq) current and equatorial electrojet are widely known as one of the fundamental currents in ionosphere. Although the Sq‐EEJ current system has been extensively investigated, the manner in which Hall and Pedersen current components collectively organize the system has not been clearly described.
T. Ijuin, H. Jin, A. Yoshikawa
wiley   +1 more source

Comparative Analysis of Ion and Electron Contributions to Ionospheric Ionization at Auroral and Subauroral Latitudes

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract Electron and proton precipitation into the nightside ionosphere is a key process in magnetosphere–ionosphere coupling. Although auroral electron precipitation at ∼0.1 ${\sim} 0.1$–10 keV is traditionally considered the main driver of auroral emissions, recent studies show that >30 ${ >} 30$ keV electrons and protons can significantly ...
S. R. Kamaletdinov, A. V. Artemyev, Y. Shen, X.‐J. Zhang, Y. Nishimura, J. Liang, V. Angelopoulos, Y. Miyoshi, K. Keika, K. Asamura, A. Bhatt, S. Kasahara, Y. Kasahara, S. Matsuda, T. Hori, A. Matsuoka, M. Teramoto, K. Yamamoto, S. Yokota, A. Shinbori, F. Tsuchiya, A. Kumamoto, I. Shinohara   +22 more
wiley   +1 more source

Post‐Sunset Merging of Equatorial Ionization Anomaly Crests Into a Single Peak Over ∼35° Longitude During the 19 January 2026 Geomagnetic Superstorm

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract We investigate the nighttime equatorial ionosphere during the 19 January 2026 geomagnetic storm using Global‐scale Observations of the Limb and Disk OI 135.6 nm observations and ground‐based GPS Total Electron Content. The observations reveal a pronounced longitudinal asymmetry in the post‐sunset equatorial ionization anomaly (EIA).
Deepak K. Karan, Richard W. Eastes, Kuldeep Pandey, Wenbin Wang, Carlos R. Martinis, Robert E. Daniell, Quan Gan   +6 more
wiley   +1 more source

Reanalysis of SKR Source Crossed by Cassini: Loss Cone Electrons as a Secondary Source of Free Energy

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract Saturn's Kilometric Radiation (SKR) is a powerful non‐thermal radio auroral emission produced by the Cyclotron Maser Instability (CMI), which generates waves close to the local cyclotron frequency in a highly magnetized plasma from mildly relativistic electrons.
B. Collet, L. Lamy, Y. Kasaba, N. Andre
wiley   +1 more source

ANTARCTICA: A TREASURE–TROVE FOR PLANETARY SCIENCES. AUSTRALASIAN MICROTEKTITES FROM EAST ANTARCTICA [PDF]

, 2020
The planetary science community has benefitted greatly from research in Antarctica. The discovery of large accumulations of meteorites in blue ice fields on the polar plateau since 1969 and of cosmic dust in Antarctic ice, snow and supraglacial moraines ...
Folco L
core  

Ultralow-frequency Waves in Jupiter’s Magnetopause Boundary Layer

The Astrophysical Journal
Ultralow-frequency (ULF) waves (∼tens of minutes period) are widely identified in the Jovian system and are believed to be associated with energy dissipation in the magnetosphere and ionosphere.
Zhili Zeng, Zhonghua Yao, Jian Liu, Yan Xu, William R. Dunn, Binzheng Zhang, Martin O. Archer   +6 more
doaj   +1 more source

A multi-instrument view of tail reconnection at Saturn

, 2008
Three instances of tail reconnection events at Saturn involving the ejection of plasmoids downtail have been reported by Jackman et al. (2007) using data from Cassini’s magnetometer (MAG).
Jones, G.H, Jones, G., Arridge, C., Krupp, N., Arridge, C.S., Bunce, E.J., Jackman, C., Jones, G. H., Jackman, C. M., Jackman, C.M., Arridge, C. S., Russell, C. T., Mitchell, D.G., Mitchell, D., McAndrews, H.J, Russell, C., Russell, C.T., Coates, A., Coates, A.J., McAndrews, H. J., McAndrews, H., Mitchell, D. G., Coates, A. J., Dougherty, M. K., Dougherty, M., Dougherty, M.K., Bunce, E., Bunce, E. J., Achilleos, N.   +28 more
core   +1 more source