Results 201 to 210 of about 2,743,097 (252)

Global ULF waves generated by a hot flow anomaly

Geophysical Research Letters, 2017
Hui Zhang, Q -G Zong
exaly   +2 more sources

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On the Source of the Anomalous ULF Waves Detected at Both Ground and Space‐Borne Data on 23 June 2020

Journal of Geophysical Research: Space Physics, 2022
We have analyzed a highly monochromatic (f = 1.67 mHz) and large‐amplitude Ultra Low Frequency (ULF) wave event observed at satellites and ground observatories on 23 June 2020 during super solar quiet geomagnetic conditions.
M. Piersanti, S. Di Matteo, Z. Zhima, Y. Yang, Z. Zhang, M. F. Marcucci, A. Parmentier, G. D’Angelo, D. Recchiuti, P. Diego, P. Ubertini   +10 more
semanticscholar   +1 more source

ULF waves in the foreshock

Advances in Space Research, 1995
Plasma waves observed in the VLF range upstream of planetary bow shocks not only modify the particle distributions, but also provide important information about the acceleration processes that occur at the bow shock. Electron plasma oscillations observed near the tangent field line in the electron foreshock are generated by electrons reflected at the ...
E.W Greenstadt, G Le, R.J Strangeway
openaire   +1 more source

A study of ULF wave foreshock morphology—II: spatial variation of ULF waves

Planetary and Space Science, 1992
Abstract Two case studies are used to show the evolution of upstream ULF waves in the Earth's foreshock region. During these two intervals the IMF cone angle was nearly constant over an extended time period and the ISEE spacecraft was in the foreshock region and traveled a large distance through it.
G. Le, C.T. Russell
openaire   +1 more source

A Quest for a Controllable ULF Wave Source

IEEE Transactions on Communications, 1974
Natural geomagnetic phenomena indicate that wave generation and amplification processes occur spontaneously in the magnetosphere and may be available under certain conditions to permit the frequency band near 1 Hz to be used for communications. An ionospheric duct provides low-loss propagation for waves in this band to distances of thousands of ...
John R. Davis, John W. Willis
openaire   +1 more source

Ionospheric propagation of ULF-waves

Journal of Atmospheric and Terrestrial Physics, 1984
Abstract Features of mid-latitude ionospheric propagation of geomagnetic pulsations are studied. It is shown that the orientation of the horizontal component of the incident wave vector with reference to the geomagnetic meridian has a strong influence on the amplitude transformation and on the angle of rotation of the polarization plane.
A.I Pudovkin, C.A Loginov, E.V Pudovkina, M.I Pudovkin, A.V Usmanov   +4 more
openaire   +1 more source

Global Propagation of Magnetospheric Pc5 ULF Waves Driven by Foreshock Transients

Journal of Geophysical Research: Space Physics, 2020
Pc5 (2–7 mHz) ultralow frequency (ULF) waves play a significant role in resonating with particles and transferring energy in the coupled magnetospheric and ionospheric system.
Boyi Wang, T. Liu, Y. Nishimura, Hui Zhang, M. Hartinger, Xueling Shi, Q. Ma, V. Angelopoulos, H. Frey   +8 more
semanticscholar   +1 more source

Ionospheric Feedback and ULF Quarter‐Waves

Journal of Geophysical Research: Space Physics, 2022
AbstractThis paper presents results from the numerical investigation of nonlinear feedback interactions between ULF field‐aligned currents (FACs) and the ionospheric plasma in the global magnetospheric resonator with a non‐symmetrical distribution of the plasma density in the conjugate hemispheres.
Anatoly V. Streltsov, Evgeny V. Mishin
openaire   +1 more source

Simulations of Electron Flux Oscillations as Observed by MagEIS in Response to Broadband ULF Waves

Journal of Geophysical Research: Space Physics, 2020
Coherent electron flux oscillations of hundreds of keV are often observed by the Van Allen Probes in the magnetosphere during quiet times in association with ultralow frequency (ULF) waves.
T. Sarris, Xinlin Li, M. Temerin, Hong Zhao, L. Khoo, D. Turner, Wenlong Liu, S. Claudepierre   +7 more
semanticscholar   +1 more source

Global‐Scale ULF Waves Associated With SSC Accelerate Magnetospheric Ultrarelativistic Electrons

Journal of Geophysical Research: Space Physics, 2019
We study electron behavior in the outer radiation belts during the 16 July 2017 storm sudden commencement (SSC), in which prompt intensification of ultrarelativistic electron fluxes was observed at around L = 4.8 by Van Allen Probe B immediately after an
Y. Hao, Q. Zong, Xuzhi Zhou, R. Rankin, Xingran Chen, Y. Liu, S. Fu, D. N. Baker, H. Spence, J. Blake, G. Reeves, S. Claudepierre   +11 more
semanticscholar   +1 more source