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Global morphology and spectral properties of EMIC waves derived from CRRES observations [PDF]

Journal of Geophysical Research: Space Physics, 2014
Gyroresonant wave particle interactions with electromagnetic ion cyclotron (EMIC) waves are a potentially important loss process for relativistic electrons in the Earth's radiation belts.
Nigel P Meredith, Richard B Horne, Tobias Kersten   +2 more
exaly   +2 more sources

Electron losses from the radiation belts caused by EMIC waves [PDF]

Journal of Geophysical Research: Space Physics, 2014
Electromagnetic Ion Cyclotron (EMIC) waves cause electron loss in the radiation belts by resonating with high energy electrons at energies greater than about 500 keV. However, their effectiveness has not been fully quantified.
Tobias Kersten, Richard B Horne, S A Glauert   +2 more
exaly   +2 more sources

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Statistical Dependence of EMIC Wave Scattering on Wave and Plasma Parameters

Journal of Geophysical Research: Space Physics, 2020
AbstractA recent statistical study (Qin et al., 2018, https://doi.org/10.1029/2018JA025419) has suggested that not all electromagnetic ion cyclotron (EMIC) waves can scatter relativistic electrons. However, knowledge of the factors that influence the EMIC wave scattering efficiency is still limited in observations.
Murong Qin, Mary Hudson, Robyn Millan, Leslie Woodger, Xiaochen Shen   +4 more
openaire   +1 more source

Observations of relativistic electron precipitation from the radiation belts driven by EMIC waves [PDF]

Geophysical Research Letters, 2008
For some time theoretical modeling has shown that electromagnetic ion cyclotron (EMIC) waves should play an important role in the loss of relativistic electrons from the radiation belts, through precipitation into the atmosphere. Up to now there has been
Craig J Rodger, T Raita, Mark A Clilverd   +2 more
exaly   +2 more sources

EMIC waves around the plasma-pause region

Planetary and Space Science, 2008
Abstract Electromagnetic ion-cyclotron (EMIC) instability has been studied using the general loss-cone distribution function by investigating the trajectories of charged particles and using the method of particle aspect analysis. A low β (ratio of plasma pressure to magnetic pressure) plasma consisting of resonant and non-resonant particles has ...
P Varma, G Ahirwar, M S Tiwari, Al [ Bortnik, J Bortnik, R M Thorne, O ' Brien, J C Strongeway, R J Shprits   +8 more
openaire   +2 more sources

Effects of EMIC Wave‐Driven Proton Precipitation on the Ionosphere

Journal of Geophysical Research: Space Physics, 2022
AbstractWe investigate the proton precipitation caused by electromagnetic ion cyclotron (EMIC) waves and its impact on the ionosphere with the self‐consistent ring current‐atmosphere interactions model (RAM‐SCBE) coupled with an ionospheric particle transport model Global Airglow (GLOW).
Xingbin Tian, Yiqun Yu, Minghui Zhu, Longxing Ma, Jinbin Cao, Shreedevi PR, Vania K. Jordanova, Stanley C. Solomon   +7 more
openaire   +1 more source

A statistical study of EMIC waves observed by Cluster: 1. Wave properties

2014 XXXIth URSI General Assembly and Scientific Symposium (URSI GASS), 2014
Electromagnetic ion cyclotron (EMIC) waves are an important mechanism for particle energization and losses inside the magnetosphere. In order to better understand the effects of these waves on particle dynamics, detailed information about the ellipticity, normal angle, energy propagation angle distributions, and local plasma parameters are required ...
R. C. Allen, J.-C. Zhang, L. M. Kistler, H. E. Spence, R.-L. Lin, B. Klecker, M. W. Dunlop, M. André   +7 more
openaire   +1 more source

Analysis of Conjugate Satellite and Ground EMIC Wave Observations

2021 USNC-URSI Radio Science Meeting (USCN-URSI RSM), 2021
Electromagnetic ion cyclotron (EMIC) waves are transverse electromagnetic waves typically generated in the equatorial magnetosphere by anisotropic proton distributions. These waves can resonantly interact with multiple particle populations in the inner magnetosphere believed to be an important loss mechanism for both ring current ions and radiation ...
M. E. Usanova, L. W. Blum
openaire   +1 more source

Effect of EMIC waves on relativistic and ultrarelativistic electron populations: Ground‐based and Van Allen Probes observations

Geophysical Research Letters, 2014
We study the effect of electromagnetic ion cyclotron (EMIC) waves on the loss and pitch angle scattering of relativistic and ultrarelativistic electrons during the recovery phase of a moderate geomagnetic storm on 11 October 2012.
M E Usanova, A Y Drozdov, I R Mann
exaly   +3 more sources

Characteristics of Subpacket Structures in Ground EMIC Wave Observations

Journal of Geophysical Research: Space Physics, 2018
AbstractRecent studies using satellite observations have reported that subpacket structures play an important role in determining the characteristics of electromagnetic ion cyclotron (EMIC) rising/falling tone emissions. The purpose of the present study is to investigate the subpacket structure characteristics in the ground observations of the EMIC ...
Bharati Kakad, Yoshiharu Omura, Amar Kakad, Aditi Upadhyay, Ashwini K. Sinha   +4 more
openaire   +1 more source