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Radiation Belt “Dropouts” and Drift-Bounce Resonances in Broadband Electromagnetic Waves

Journal Article · · Geophysical Research Letters
DOI:https://doi.org/10.1002/2017GL076362· OSTI ID:1463564
 [1];  [1];  [2];  [3];  [4];  [5]
  1. Univ. of California, Berkeley, CA (United States). Space Sciences Lab.
  2. Univ. of Minnesota, Minneapolis, MN (United States). Dept. of Physics and Astronomy
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  4. Univ. of Colorado, Boulder, CO (United States). Lab. for Atmospheric and Space Physics
  5. Univ. of Sydney, Camperdown, NSW (Australia). School of Physics
+ Show Author Affiliations
Observations during the main phase of geomagnetic storms reveal an anticorrelation between the occurrence of broadband low-frequency electromagnetic waves and outer radiation belt electron flux. Here, we show that the drift-bounce motion of electrons in the magnetic field of these waves leads to rapid electron transport. For observed spectral energy densities it is demonstrated that the wave magnetic field can drive radial diffusion via drift-bounce resonance on time scales less than a drift orbit. This process may provide outward transport sufficient to account for electron “dropouts” during storm main phase and more generally modulate the outer radiation belt during geomagnetic storms.
Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
National Aeronautic and Space Administration (NASA)
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1463564
Report Number(s):
LA-UR--18-25086
Journal Information:
Geophysical Research Letters, Journal Name: Geophysical Research Letters Journal Issue: 5 Vol. 45; ISSN 0094-8276
Publisher:
American Geophysical UnionCopyright Statement
Country of Publication:
United States
Language:
English

References (41)

Observations of kinetic scale field line resonances journal January 2014
Analytic expressions for ULF wave radiation belt radial diffusion coefficients: Analytic Radial Diffusion Coefficients journal March 2014
On the cause and extent of outer radiation belt losses during the 30 September 2012 dropout event: Effective ranges of outer belt dropouts journal March 2014
Global storm time depletion of the outer electron belt journal April 2015
Broadband low-frequency electromagnetic waves in the inner magnetosphere: INNER MAGNETOSPHERIC BROADBAND WAVES journal October 2015
Highly relativistic radiation belt electron acceleration, transport, and loss: Large solar storm events of March and June 2015: HIGHLY RELATIVISTIC ELECTRON DYNAMICS journal July 2016
Global ULF wave analysis of radial diffusion coefficients using a global MHD model for the 17 March 2015 storm: RADIAL DIFFUSION COEFFICIENT CALCULATION journal July 2016
Physical mechanism causing rapid changes in ultrarelativistic electron pitch angle distributions right after a shock arrival: Evaluation of an electron dropout event journal September 2016
Ultra-relativistic radiation belt extinction and ULF wave radial diffusion: Modeling the September 2014 extended dropout event: Modeling the September 2014 Flux Dropout journal March 2017
Radial transport of radiation belt electrons in kinetic field-line resonances: Alfvénic Radiation Belt Transport journal August 2017
The Electric Field and Waves Instruments on the Radiation Belt Storm Probes Mission book January 2013
Particle Diffusion in the Radiation Belts book January 1974
Effects of electromagnetic perturbations on particles trapped in the radiation belts journal March 1965
The relativistic quasilinear theory of particle acceleration by hydromagnetic turbulence journal August 1971
Science Objectives and Rationale for the Radiation Belt Storm Probes Mission journal September 2012
The Relativistic Electron-Proton Telescope (REPT) Instrument on Board the Radiation Belt Storm Probes (RBSP) Spacecraft: Characterization of Earth’s Radiation Belt High-Energy Particle Populations journal December 2012
The Electric Field and Waves Instruments on the Radiation Belt Storm Probes Mission journal October 2013
Helium, Oxygen, Proton, and Electron (HOPE) Mass Spectrometer for the Radiation Belt Storm Probes Mission journal March 2013
The Balloon Array for RBSP Relativistic Electron Losses (BARREL) journal March 2013
The Magnetic Electron Ion Spectrometer (MagEIS) Instruments Aboard the Radiation Belt Storm Probes (RBSP) Spacecraft journal June 2013
The Electric and Magnetic Field Instrument Suite and Integrated Science (EMFISIS) on RBSP journal June 2013
Review of radiation belt relativistic electron losses journal March 2007
Relationship of the Van Allen radiation belts to solar wind drivers journal March 2008
Radial diffusion analysis of outer radiation belt electrons during the October 9, 1990, magnetic storm journal January 2000
Resonant acceleration and diffusion of outer zone electrons in an asymmetric geomagnetic field journal January 2003
Radial diffusion and MHD particle simulations of relativistic electron transport by ULF waves in the September 1998 storm journal January 2006
Outward radial diffusion driven by losses at magnetopause journal January 2006
Storm time evolution of the outer radiation belt: Transport and losses journal January 2006
Evolution of ring current and radiation belt particles under the influence of storm-time electric fields: RADIATION BELT IN STORM ELECTRIC FIELD journal June 2007
A rapid, global and prolonged electron radiation belt dropout observed with the Global Positioning System constellation: FAST RADIATION BELT LOSSES journal March 2010
Spatial distribution of relativistic electron precipitation during a radiation belt depletion event: SPATIAL DISTRIBUTION OF RELATIVISTIC PRECIPITATION journal October 2010
Relativistic electron loss due to ultralow frequency waves and enhanced outward radial diffusion: RELATIVISTIC ELECTRON LOSS-ULF WAVES journal December 2010
Simulation of the prompt energization and transport of radiation belt particles during the March 24, 1991 SSC journal November 1993
Ion acceleration in the suprauroral region: A Monte Carlo Model journal July 1983
Transverse acceleration of oxygen ions by electromagnetic ion cyclotron resonance with broad band left-hand polarized waves journal July 1986
Standing Alfvén waves in the magnetosphere journal February 1969
Effect of hydromagnetic waves on the lifetime of Van Allen radiation protons journal January 1961
Explaining sudden losses of outer radiation belt electrons during geomagnetic storms journal January 2012
Observation of void formation patterns in SnAg films undergoing electromigration and simulation using random walk methods journal April 2021
Anomalous transport in turbulent plasmas and continuous time random walks journal May 1995
Stochastic Problems in Physics and Astronomy journal January 1943

Cited By (3)

Pitch Angle Scattering and Loss of Radiation Belt Electrons in Broadband Electromagnetic Waves journal September 2018
Global‐Scale ULF Waves Associated With SSC Accelerate Magnetospheric Ultrarelativistic Electrons journal March 2019
Characterizing time intermittency in non-diffusive fast ion transport through plasma turbulence journal October 2019

Figures / Tables (4)

Figure 1(p. 20)figure Figure 1
Figure 2(p. 22)figure Figure 2
Figure 3(p. 24)figure Figure 3
Figure 4(p. 25)figure Figure 4

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Related Subjects

58 GEOSCIENCES
Alfven waves
Heliospheric and Magnetospheric Physics
geomagnetic storms
radial transport
radiation belts