Results 71 to 80 of about 260,255 (207)

Multi‐Step Gravity Wave Propagation From a Tropospheric Vortex to the Ionosphere Near the Tibetan Plateau

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract The atmosphere and ionosphere form a vertically coupled system in which disturbances in the lower atmosphere can modulate ionospheric variability. Using reanalysis data, ground‐based GNSS observations, and COSMIC‐2 profiles, we investigate gravity waves (GWs) generation and upward coupling during a southwest vortex (SWV) event over the Tibetan
Wei Yao, Huijun Le, Wenjie Sun, Libo Liu, Yiding Chen   +4 more
wiley   +1 more source

Effects of the 2007 Martian Global Dust Storm on Boundary Positions in the Induced Magnetosphere

The Planetary Science Journal
Mars's magnetosphere is a sensitive system, varying due to external and internal factors, such as solar wind conditions and crustal magnetic fields.
Catherine E. Regan, Andrew J. Coates, Mark Lester, Anne Wellbrock, Geraint H. Jones, Beatriz Sánchez-Cano, Philippe Garnier, Richard P. Haythornthwaite, Dikshita Meggi, Rudy A. Frahm, Mats Holmström   +10 more
doaj   +1 more source

Solar-wind control of the extent of planetary ionospheres

, 1976
In our solar system there are at least four magnetic planets: Earth, Jupiter, Mercury, and Mars; while at least one planet, Venus, appears to be essentially nonmagnetic. The ionospheres of the magnetic planets are imbedded in their magnetosphere and thus
Bauer, S. J.
core  

How the Relative Contribution of DP‐1 and DP‐2 Currents Reshapes the Global Current System During Substorms

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract Geomagnetic disturbances in polar regions can be decomposed into two main patterns: the Disturbance Polar (DP) 1 and 2. How their relative contribution reshapes global current system remains unclear. In this study, we classified substorms from 2010 to 2022 into weak and strong DP‐2 events based on the ratio of the eastward to westward auroral ...
Jiarong Ma, Chao Yue, Haobo Fu, Shan Wang, Qiugang Zong, Xuzhi Zhou   +5 more
wiley   +1 more source

Frequency Characteristics of Magnetosonic Waves Driven by Hot Ring-Beam Protons

The Astrophysical Journal
Magnetosonic (MS) waves can be generated by energetic ring-beam protons, appearing as harmonics near the local proton cyclotron frequency, in the planetary ionospheres/magnetospheres.
Amrutha, S. V. Singh, K. C. Barik, G. S. Lakhina   +3 more
doaj   +1 more source

Planetary period oscillations in Saturn's magnetosphere: Coalescence and reversal of northern and southern periods in late northern spring

, 2016
We investigate planetary period oscillations (PPOs) in Saturn's magnetosphere using Cassini magnetic field and Saturn kilometric radiation (SKR) data over the interval from late 2012 to the end of 2015, beginning ~3 years after vernal equinox and ending ~
G. Provan, S. Cowley, Laurent Lamy, E. Bunce, G. Hunt, P. Zarka, M. K. Dougherty   +6 more
semanticscholar   +1 more source

First Observation of Sawtooth‐Like Undulations in Afternoon Detached Auroral Arcs Modulated by Surface Waves at the Plasmaspheric Plume Boundary

AGU Advances, Volume 7, Issue 3, June 2026.
Abstract The afternoon detached auroral arc is an important phenomenon in the subauroral region, reflecting coupling processes between the Earth's magnetosphere and ionosphere. Previous studies have not identified fine‐scale structures in such arcs, leaving the dynamics underlying their formation poorly understood.
Huiting Feng, Dedong Wang, Yixin Hao, Yoshizumi Miyoshi, Haobo Fu, Chae‐Woo Jun, Yuzhang Ma, Yongliang Zhang, Kazushi Asamura, Yoshiya Kasahara, Shoya Matsuda, Atsuki Shinbori, Fuminori Tsuchiya, Atsushi Kumamoto, Ayako Matsuoka, Mariko Teramoto, Kazuhiro Yamamoto, Iku Shinohara, Kazuo Shiokawa, Yuri. Y. Shprits   +19 more
wiley   +1 more source

A Benchmark Model for the Sunlit Martian Ionosphere: Structure, Composition, and Energetics

The Astrophysical Journal
Multi-instrument measurements of the Martian upper atmosphere and ionosphere by the Mars Atmosphere and Volatile Evolution (MAVEN) mission demand a self-consistent model capable of simultaneously solving the coupled continuity, momentum, and energy ...
Yanxing Liu, Xiaoshu Wu, Jun Cui, Haoyu Lu, Yutian Cao, Jianyang Li   +5 more
doaj   +1 more source

Bistatic-radar methods for studying planetary ionospheres and surfaces scientific report no. 2 /final/

, 1964
Bistatic radar methods used to study planetary ionospheres and ...
Fjeldbo, G.
core  

Contemporaneous Appearances of Auroral Spiral and Transpolar Arc: Polar UVI Observations and Global MHD Simulations

Earth and Space Science, Volume 13, Issue 6, June 2026.
Abstract A local vortex‐structured aurora and a large‐scale transpolar arc (TPA) were contemporaneously observed by the Polar ultraviolet imager (UVI) during the late recovery phase of a substorm, and the interplanetary magnetic field (IMF) BY and BZ were negative and negative‐to‐positive. The TPA grew along the dawnside auroral oval from the nightside
Motoharu Nowada, Yukinaga Miyashita, Aoi Nakamizo, Noora Partamies, Quan‐Qi Shi   +4 more
wiley   +1 more source