Results 21 to 30 of about 2,743,097 (252)

Locally Generated ULF Waves in the Martian Magnetosphere: MAVEN Observations

Journal of Geophysical Research: Space Physics, 2019
We investigate Martian ultralow frequency (ULF) electromagnetic waves generated by local plasma instabilities below the Martian bow shock. Recent Mars Atmosphere and Volatile EvolutioN (MAVEN) observations have shown that ULF waves generated upstream of ...
Y. Harada, S. Ruhunusiri, J. Halekas, J. Espley, G. DiBraccio, J. Mcfadden, D. Mitchell, C. Mazelle, G. Collinson, D. Brain, T. Hara, Masahito Nosé, S. Oimatsu, K. Yamamoto, B. Jakosky   +14 more
semanticscholar   +2 more sources

Systematical Analyses of Global Ionospheric Disturbance Current Systems Caused by Multiple Processes: Penetration Electric Fields, Solar Wind Pressure Impulses, Magnetospheric Substorms, and ULF Waves. [PDF]

J Geophys Res Space Phys, 2020
We present the first systematic analysis of global ionospheric disturbance current systems caused by multiple processes of solar and magnetospheric origin, including reorientations of the interplanetary magnetic field (IMF), sudden changes in the solar ...
Huang CS.
europepmc   +2 more sources

Long-lasting poloidal ULF waves observed by multiple satellites and high-latitude SuperDARN radars. [PDF]

J Geophys Res Space Phys, 2018
Poloidal ultralow frequency (ULF) waves between 5 and 10 mHz were observed by multiple satellites and three high‐latitude Super Dual Auroral Radar Network radars during the recovery phase of a moderate geomagnetic storm on 24–27 January 2016.
Shi X, Baker JBH, Ruohoniemi JM, Hartinger MD, Murphy KR, Rodriguez JV, Nishimura Y, McWilliams KA, Angelopoulos V.   +8 more
europepmc   +2 more sources

Modulation of chorus intensity by ULF waves deep in the inner magnetosphere

, 2016
Previous studies have shown that chorus wave intensity can be modulated by Pc4-Pc5 compressional ULF waves. In this study, we present Van Allen Probes observation of ULF wave modulating chorus wave intensity, which occurred deep in the magnetosphere. The
Z. Xia, Lunjin Chen, L. Dai, S. Claudepierre, Anthony A. Chan, A. Soto-Chavez, G. Reeves   +6 more
semanticscholar   +2 more sources

Statistical Properties of Pc4‐5 ULF Waves in Plasmaspheric Plumes

Geophysical Research Letters
Ultra‐low‐frequency (ULF) waves emerge as pivotal factors in elucidating the mechanisms that drive the intricate dynamics of radiation belt electrons within the plasmasphere and plasmaspheric plumes. Utilizing THEMIS data from September 2012 to September
Zhaoyang Lu, Jingchun Li, Shuai Zhang, Alexander W. Degeling, Chao Shen, Jiaqi Dong, Quanqi Shi, Anmin Tian   +7 more
doaj   +2 more sources

A New Four‐Component L*‐Dependent Model for Radial Diffusion Based on Solar Wind and Magnetospheric Drivers of ULF Waves

Space Weather, 2023
Waves which couple to energetic electrons are particularly important in space weather, as they drive rapid changes in the topology and intensity of Earth's outer radiation belt during geomagnetic storms. This includes Ultra Low Frequency (ULF) waves that
K. Murphy, J. Sandhu, I. J. Rae, T. Daggitt, S. Glauert, R. Horne, C. Watt, S. Bentley, A. Kellerman, L. Ozeke, A. Halford, S. Tian, A. Breneman, L. Olifer, I. Mann, V. Angelopoulos, J. Wygant   +16 more
semanticscholar   +1 more source

Global ULF Waves Excited by Solar Wind Dynamic Pressure Impulses: 1. Timescales and Geomagnetic Activity Dependence

Journal of Geophysical Research: Space Physics, 2023
Solar wind dynamic pressure pulse is one of the sources of ultra‐low frequency (ULF) waves. Based on 1‐second resolution magnetic field observations from SuperMAG from 2012 to 2019, we conducted a statistical study on temporal and spatial variations of ...
Zi‐Kang Xie, Q. Zong, Jie Ren, C. Yue, Zhiyang Liu, Jian‐jun Liu, Zejun Hu, Xingyu Li, Z. Yin, Yun Yan, Li Li, J. Gjerloev   +11 more
semanticscholar   +1 more source

Nonlinear Wave Growth Analysis of Chorus Emissions Modulated by ULF Waves

Geophysical Research Letters, 2022
We present Van Allen Probes observations of periodic chorus wave emissions in the troughs of compressional ultralow frequency (ULF) waves. During this event, the spectral gap of chorus waves gradually widens as the spacecraft moves from the equatorial ...
Li Li, Y. Omura, Xuzhi Zhou, Q. Zong, R. Rankin, C. Yue, S. Fu   +6 more
semanticscholar   +1 more source

Global MHD modeling of resonant ULF waves: Simulations with and without a plasmasphere. [PDF]

J Geophys Res Space Phys, 2016
We investigate the plasmaspheric influence on the resonant mode coupling of magnetospheric ultralow frequency (ULF) waves using the Lyon‐Fedder‐Mobarry (LFM) global magnetohydrodynamic (MHD) model.
Claudepierre SG, Toffoletto FR, Wiltberger M.   +2 more
europepmc   +2 more sources

On the Role of ULF Waves in the Spatial and Temporal Periodicity of Energetic Electron Precipitation

Journal of Geophysical Research: Space Physics, 2022
Energetic electron precipitation to the Earth's atmosphere is a key process controlling radiation belt dynamics and magnetosphere‐ionosphere coupling. One of the main drivers of precipitation is electron resonant scattering by whistler‐mode waves.
Xiaofei Shi, Xiao‐jia Zhang, A. Artemyev, V. Angelopoulos, M. Hartinger, E. Tsai, C. Wilkins   +6 more
semanticscholar   +1 more source