Results 81 to 90 of about 1,145 (204)

Saturation Characteristics of Parallel EMIC Waves in the Inner Magnetosphere

Geophysical Research Letters, 2019
AbstractIn this letter, detailed evolution process of parallel electromagnetic ion cyclotron waves in the inner magnetosphere has been investigated through quasilinear theory. A new saturation has been found to occur after the usual first saturation.
Xiongdong Yu, Zhigang Yuan
openaire   +2 more sources

An oscillator model representative of electron interactions with EMIC waves [PDF]

Journal of Geophysical Research: Space Physics, 2014
Nonlinear interactions of relativistic electrons with a monochromatic electromagnetic ion cyclotron (EMIC) wave were investigated in previous studies by solving the Lorentz equation for test particles. In the present study, we simplify the Lorentz equation to a set of oscillator equations, which capture the key features of the wave‐particle interaction.
Xin An, Lunjin Chen, Jacob Bortnik, Richard M. Thorne   +3 more
openaire   +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

The role of cold oxygen ions in the EMIC wave growth

Journal of Geophysical Research: Space Physics
Abstract Electromagnetic ion cyclotron (EMIC) waves, driven by ring current ion temperature anisotropy in the Earth's magnetosphere, play a key role in accelerating and precipitating relativistic electrons in the radiation belts. Their excitation and saturation are significantly affected by the surrounding cold plasma.
Shujie Gu, Misa Cowee, Xiangrong Fu, Lunjin Chen, Xu Liu, Vania Jordanova   +5 more
openaire   +5 more sources

On the Role of Electron Precipitation in Excess Radiation Doses Measured at Aviation Altitudes

Space Weather, Volume 24, Issue 6, June 2026.
Abstract Radiation from space in the form of galactic cosmic rays (GCRs) generates a persistent background of ionizing radiation in Earth's atmosphere. The dose rate of ionizing radiation due to GCRs increases from sea level to aviation altitudes.
Julia Luna Claxton, Robert Marshall
wiley   +1 more source

Inferring magnetospheric heavy ion density using EMIC waves

, 2015
We present a method to infer heavy ion concentration ratios from electromagnetic ion cyclotron (EMIC) wave observations that result from ion-ion hybrid (IIH) resonance.
Lee, Dong Hun, Kim, Eun Hwa, Dong‐Hun Lee, Johnson, Jay R., Hyomin Kim, Jay R. Johnson, Eun‐Hwa Kim, Kim, Hyomin   +7 more
core   +1 more source

Magnetospheric multiscale observations of electromagnetic ion cyclotron waves associated with cold ion heating in the Earth’s magnetosphere

AIP Advances
Electromagnetic ion cyclotron (EMIC) waves play a significant role in shaping the dynamics of Earth’s magnetosphere. On September 13, 2015, EMIC wave activity within the proton band was detected in the inner magnetosphere through observations made by the
A. A. Abid, K. Qamar, Nisar Ahmad, A. Waheed, M. S. Hussain, M. N. S. Qureshi, Amin Esmaeili, B. M. Alotaibi, Ommair Ishaque, Xiaojie Li, Guang-Rui Yao, Yan-Fang Ji   +11 more
doaj   +1 more source

Development of Next‐Generation Flood Inundation Maps: A Case Study in Kaohsiung City, Taiwan

Journal of Flood Risk Management, Volume 19, Issue 2, June 2026.
ABSTRACT Flood inundation mapping has become a critical reference for flood risk management, particularly for determining insurance premiums and formulating mitigation strategies in rapidly urbanizing areas with high population density. With recent advancements in mapping technologies and high computing capacity, high‐resolution spatiotemporal datasets
Chih‐Hung Hsu, Jiun‐Huei Jang, Che‐Hao Chang, Wei‐Lin Lee, Chia‐Chen Chien, Po‐Hsien Chung   +5 more
wiley   +1 more source

Modeling the EMIC Wave‐Induced Acceleration of Energetic Protons in the Io Footprint Tail

Geophysical Research Letters
The Io footprint tail (FPT) region is crucial for studying the interactions between Io and Jupiter's magnetosphere. In this region, Juno spacecraft observed significant acceleration of energetic protons, concurrently with electromagnetic ion cyclotron ...
Peng Lu, Xing Cao, Xudong Gu, Binbin Ni, Wei Xu, Shaobei Wang, Minyi Long   +6 more
doaj   +1 more source

Analysis of Chorus Wave Power on Burst‐Mode Timescales During the Van Allen Probes Era

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract Interactions between whistler‐mode chorus waves and electrons are a key driver of dynamics in Earth's radiation belts. These global dynamics are often described using Fokker‐Planck diffusion models. Whilst, in many cases, such models effectively describe the large scale changes within the region, they often rely upon spatially and temporally ...
R. Black, O. Allanson, N. P. Meredith, A. Hillier, D. P. Hartley   +4 more
wiley   +1 more source