The interactions between ULF waves and cold charged particles in the Earth's magnetosphere
地球与行星物理论评, 2022 In the solar wind-magnetosphere coupling processes, many kinds of plasma waves can be excited in the Earth's magnetosphere including ULF waves, hiss waves, chorus waves, etc. Among these waves, ULF waves are featured by the lowest wave frequency (1 mHz～1
Jie Ren, Qiugang Zong
doaj +1 more source
ULF waves and discrete aurora [PDF]
Journal of Geophysical Research: Space Physics, 2012 We present results from the numerical study of ULF waves generated by the ionospheric feedback instability in density cavities. The goal of the study is to explain several spectral features of ULF waves detected on the ground in close vicinity of intense discrete auroral arcs.
A. V. Streltsov +4 more
openaire +1 more source
A numerical model to investigate the polarisation azimuth of ULF waves through an ionosphere with oblique magnetic fields [PDF]
Annales Geophysicae, 2005 A one dimensional, computational model for the propagation of ultra low frequency (ULF; 1-100 mHz) wave fields from the Earth's magnetosphere through the ionosphere, atmosphere and into the ground is presented.
M. D. Sciffer, C. L. Waters, F. W. Menk
doaj +1 more source
On the magnetospheric ULF wave counterpart of substorm onset [PDF]
, 2020 One near‐ubiquitous signature of substorms observed on the ground is the azimuthal structuring of the onset auroral arc in the minutes prior to onset. Termed auroral beads, these optical signatures correspond to concurrent exponential increases in ground
Forsyth, C. +4 more
core +3 more sources
An initial ULF wave index derived from 2 years of Swarm observations [PDF]
Annales Geophysicae, 2018 The ongoing Swarm satellite mission provides an opportunity for better knowledge of the near-Earth electromagnetic environment. Herein, we use a new methodological approach for the detection and classification of ultra low-frequency (ULF) wave events ...
C. Papadimitriou +4 more
doaj +1 more source
Journal of Astronomy and Space Sciences, 2022 The dynamics of the outer zone radiation belt has received a lot of attention mainly due to the correlation between the occurrence of enhancing relativistic electron flux and spacecraft operation anomalies or even failures (e.g., Baker et al.
Eunah Lee, Ian R. Mann, Louis G. Ozeke
doaj +1 more source
Semiannual variation of Pc5 ultra-low frequency (ULF) waves and relativistic electrons over two solar cycles of observations: comparison with predictions of the classical hypotheses [PDF]
Annales Geophysicae, 2020 Pc5 ULF (ultra-low frequency) waves can energize electrons to relativistic energies of >2 MeV in geostationary orbits. Enhanced fluxes of such electrons can induce operational anomalies in geostationary satellites.
F. L. Poblet, F. Azpilicueta, H.-L. Lam
doaj +1 more source
Calculating ultra-low-frequency wave power of the compressional magnetic field vs. L and time: multi-spacecraft analysis using the Van Allen probes, THEMIS and GOES [PDF]
Annales Geophysicae, 2016 Ultra-low-frequency (ULF) pulsations are critical in radial diffusion processes of energetic particles, and the power spectral density (PSD) of these fluctuations is an integral part of the radial diffusion coefficients and of assimilative models of ...
T. E. Sarris, T. E. Sarris, X. Li
doaj +1 more source
Convolutional Neural Networks for Automated ULF Wave Classification in Swarm Time Series
Atmosphere, 2022 Ultra-low frequency (ULF) magnetospheric plasma waves play a key role in the dynamics of the Earth’s magnetosphere and, therefore, their importance in Space Weather phenomena is indisputable.
Alexandra Antonopoulou +7 more
doaj +1 more source
Interactions of energetic electrons with ULF waves triggered by interplanetary shock: Van Allen Probes observations in the magnetotail [PDF]
, 2014 We present in situ observations of a shock-induced substorm-like event on 13 April 2013 observed by the newly launched Van Allen twin probes. Substorm-like electron injections with energy of 30-500 keV were observed in the region from L∼5.2 to 5.5 ...
Blake, J. B. +11 more
core +2 more sources