Results 101 to 110 of about 8,882 (233)

How the 29 July 2025 M8.8 Kamchatka Earthquake Shook the Ionosphere Over Japan

Journal of Geophysical Research: Space Physics, Volume 131, Issue 7, July 2026.
Abstract This study investigates the mid‐field (∼1,100–3,800 km) ionospheric response to the 29 July 2025 Kamchatka earthquake over Japan using multi‐instrument observations, raytracing, and numerical simulations. Total electron content (TEC) observations from GPS satellite G04 and Galileo satellite E10 show a maximum TEC perturbation of ∼0.5–0.85 TECU
R. K. Barad, E. Astafyeva, S. A. Sanchez, E. A. Kherani, I. D. Ouar, C. Maréchal   +5 more
wiley   +1 more source

High Latitude Thermosphere and Ionosphere Density Response to the May 2024 Geomagnetic Storm Observed by the LLITED CubeSat Mission

Journal of Geophysical Research: Space Physics, Volume 131, Issue 7, July 2026.
Abstract The May 2024 G5 geomagnetic storm produced significant disturbances in the ionosphere and thermosphere, particularly at high latitudes. Using high‐resolution in situ ion and neutral density measurements from the NASA Low‐Latitude Ionosphere/Thermosphere Enhancements in Density (LLITED) CubeSat at 430 km altitude, this study documents notable ...
Diana J. Swanson, James H. Clemmons, Huixin Liu, Rebecca Bishop, Shantanab Debchoudhury, Aroh Barjatya, Asti Bhatt   +6 more
wiley   +1 more source

Statistical Study on Pulsating Auroras and High‐Latitude Propagation of Chorus Waves Based on Conjugate Observations of Ground‐Based Imagers and Arase Satellite

Journal of Geophysical Research: Space Physics, Volume 131, Issue 7, July 2026.
Abstract Pulsating aurora (PsA) is one of the common diffuse auroras typically generated by ∼10 keV electron precipitation. Precipitating electrons are scattered via wave‐particle interactions with whistler‐mode chorus waves in the magnetosphere. Previous studies have observationally demonstrated that, during PsAs, highly energetic electrons with ...
Y. Ito, Y. Ogawa, M. Fukizawa, Y. Tanaka, A. Kadokura, Y. Miyoshi, K. Hosokawa, A. Shinbori, T. Hori, Y. Kasahara, S. Matsuda, F. Tsuchiya, A. Kumamoto, A. Matsuoka, M. Teramoto, K. Yamamoto, I. Shinohara   +16 more
wiley   +1 more source

Crosstalk in O2+ and CO2+ Channel Groups of MAVEN/NGIMS Ion Measurements

Journal of Geophysical Research: Space Physics, Volume 131, Issue 7, July 2026.
Abstract The Neutral Gas and Ion Mass Spectrometer (NGIMS) onboard the Mars Atmosphere and Volatile EvolutioN mission has provided critical insights into the composition and isotopic structure of Mars' ionosphere. However, significant model‐observation discrepancies of densities of some ion species suggest the presence of crosstalk, that is ...
Long Cheng, Erik Vigren, A. R. Poppe
wiley   +1 more source

Quasi‐Periodic X‐Ray Variations at BARREL: Role of Electron Precipitation and Solar Wind Driving

Journal of Geophysical Research: Space Physics, Volume 131, Issue 7, July 2026.
Abstract The Balloon Array for Radiation belt Relativistic Electron Losses (BARREL) mission was designed to study the loss of radiation belt electrons to the upper atmosphere. Previous analysis of data from balloon pairs showed that electron precipitation events manifest coherent quasi‐periodic variations (with periodicity on the order of 10–60 min ...
S. Di Matteo, A. W. Breneman, A. J. Halford, N. M. Viall, L. Kepko, K. Cantwell, R. Millan   +6 more
wiley   +1 more source

A Statistical Study of Warm Plasma Cloak Particles Using Van Allen Probe Data

Journal of Geophysical Research: Space Physics, Volume 131, Issue 7, July 2026.
Abstract The Warm Plasma Cloak (WPC) consists of ions in the inner magnetosphere with energies between 10 eV and 1 keV and showing a bidirectional pitch angle distribution of particles. These particles play an important role in wave–particle interactions and in controlling the dayside reconnection rate at the magnetopause.
Bhairavi Apte, Hyomin Kim, Konstantin Gamayunov   +2 more
wiley   +1 more source

Extension, Improvements and Perspectives of the Cluster GRMB Data Set

Journal of Geophysical Research: Space Physics, Volume 131, Issue 7, July 2026.
Abstract The purpose of the Geospace Region and Magnetospheric Boundary identification (GRMB) data set is to provide information on the regions crossed by each of the 4 Cluster spacecraft during the entire mission. The data set includes 15 labels, 11 for regions and transition regions (TR): plasmasphere, plasmapause TR, plasmasheet, plasmasheet TR ...
Benjamin Grison, Fabien Darrouzet, Romain Maggiolo, Mychajlo Hajoš, Michal Dvořák, Matthew Graham George Thaddeus Taylor, Delphine Herment, Arnaud Masson, Jan Souček, Ondřej Santolík, Johan De Keyser   +10 more
wiley   +1 more source

Muon Flux Fluctuations and Solar Phenomena Using Regional Geomagnetic Indices With a Cosmic Ray Detector in Mexico City

Journal of Geophysical Research: Space Physics, Volume 131, Issue 7, July 2026.
Abstract The data from a cosmic ray (CR) detector in Mexico City were collected over a period of 2 years from September 2023 to September 2025, during the maximum phase of Solar Cycle 25. The CR detector consists of an array of scintillators and measures the muonic component of secondary CRs.
D. Martínez‐Montiel, L. Serkin, G. Paić, J. O. Guerra‐Pulido, L. X. González   +4 more
wiley   +1 more source

Detection of Zwan-Wolf effect in the ionosphere of Mars. [PDF]

Nat Commun
Fowler CM, Hanley KG, McFadden J, Mitchell D, Halekas J, Andersson L, Bark D, Ma Y, Chaston C, Sanchez-Cano B, Lester M, Brain D, Mazelle C, Espley J, Benna M, Jolitz R, Ramstad R, Curry S.   +17 more
europepmc   +1 more source

Inertial Alfvén Waves With Magnetosphere‐Ionosphere Coupling and Feedback

Journal of Geophysical Research: Space Physics, Volume 131, Issue 7, July 2026.
Abstract We present a theory of the ionospheric feedback instability (IFI) in which the finite‐thickness h $h$ of the ionosphere is represented by a frequency‐ and scale‐dependent height‐integrated Pedersen conductance, YI≡∑inΩ,k⊥,h, ${Y}_{\mathrm{I}}\equiv {\mathrm{\sum }}_{\text{in}}\left({\Omega },{k}_{\perp },h\right),$ electromagnetically coupled ...
R. Rankin, Q.‐G. Zong, W. Wang
wiley   +1 more source