Energy-dependent dynamics of keV to MeV electrons in the inner zone, outer zone, and slot regions
Abstract
Here, we present observations of the radiation belts from the Helium Oxygen Proton Electron and Magnetic Electron Ion Spectrometer particle detectors on the Van Allen Probes satellites that illustrate the energy dependence and L shell dependence of radiation belt enhancements and decays. We survey events in 2013 and analyze an event on 1 March in more detail. The observations show the following: (a) at all L shells, lower energy electrons are enhanced more often than higher energies; (b) events that fill the slot region are more common at lower energies; (c) enhancements of electrons in the inner zone are more common at lower energies; and (d) even when events do not fully fill the slot region, enhancements at lower energies tend to extend to lower L shells than higher energies. During enhancement events the outer zone extends to lower L shells at lower energies while being confined to higher L shells at higher energies. The inner zone shows the opposite with an outer boundary at higher L shells for lower energies. Both boundaries are nearly straight in log(energy) versus L shell space. At energies below a few 100 keV, radiation belt electron penetration through the slot region into the innermore »
- Authors:
-
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States); The New Mexico Consortium, Los Alamos, NM (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- The Aerospace Corporation, Los Angeles, CA (United States)
- The New Mexico Consortium, Los Alamos, NM (United States)
- Univ. of New Hampshire, Durham, NH (United States)
- Univ. of Colorado Boulder, Boulder, CO (United States)
- Publication Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1255852
- Report Number(s):
- LA-UR-15-24562
Journal ID: ISSN 2169-9380
- Grant/Contract Number:
- NAS5-01072; AC52-06NA25396
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Geophysical Research. Space Physics
- Additional Journal Information:
- Journal Volume: 121; Journal Issue: 1; Journal ID: ISSN 2169-9380
- Publisher:
- American Geophysical Union
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 58 GEOSCIENCES
Citation Formats
Reeves, Geoffrey D., Friedel, Reiner H. W., Larsen, Brian A., Skoug, Ruth M., Funsten, Herbert O., Claudepierre, Seth G., Fennell, Joseph F., Turner, Drew L., Denton, Mick H., Spence, Harlan E., Blake, J. Bernard, and Baker, Daniel N. Energy-dependent dynamics of keV to MeV electrons in the inner zone, outer zone, and slot regions. United States: N. p., 2016.
Web. doi:10.1002/2015JA021569.
Reeves, Geoffrey D., Friedel, Reiner H. W., Larsen, Brian A., Skoug, Ruth M., Funsten, Herbert O., Claudepierre, Seth G., Fennell, Joseph F., Turner, Drew L., Denton, Mick H., Spence, Harlan E., Blake, J. Bernard, & Baker, Daniel N. Energy-dependent dynamics of keV to MeV electrons in the inner zone, outer zone, and slot regions. United States. https://doi.org/10.1002/2015JA021569
Reeves, Geoffrey D., Friedel, Reiner H. W., Larsen, Brian A., Skoug, Ruth M., Funsten, Herbert O., Claudepierre, Seth G., Fennell, Joseph F., Turner, Drew L., Denton, Mick H., Spence, Harlan E., Blake, J. Bernard, and Baker, Daniel N. Thu .
"Energy-dependent dynamics of keV to MeV electrons in the inner zone, outer zone, and slot regions". United States. https://doi.org/10.1002/2015JA021569. https://www.osti.gov/servlets/purl/1255852.
@article{osti_1255852,
title = {Energy-dependent dynamics of keV to MeV electrons in the inner zone, outer zone, and slot regions},
author = {Reeves, Geoffrey D. and Friedel, Reiner H. W. and Larsen, Brian A. and Skoug, Ruth M. and Funsten, Herbert O. and Claudepierre, Seth G. and Fennell, Joseph F. and Turner, Drew L. and Denton, Mick H. and Spence, Harlan E. and Blake, J. Bernard and Baker, Daniel N.},
abstractNote = {Here, we present observations of the radiation belts from the Helium Oxygen Proton Electron and Magnetic Electron Ion Spectrometer particle detectors on the Van Allen Probes satellites that illustrate the energy dependence and L shell dependence of radiation belt enhancements and decays. We survey events in 2013 and analyze an event on 1 March in more detail. The observations show the following: (a) at all L shells, lower energy electrons are enhanced more often than higher energies; (b) events that fill the slot region are more common at lower energies; (c) enhancements of electrons in the inner zone are more common at lower energies; and (d) even when events do not fully fill the slot region, enhancements at lower energies tend to extend to lower L shells than higher energies. During enhancement events the outer zone extends to lower L shells at lower energies while being confined to higher L shells at higher energies. The inner zone shows the opposite with an outer boundary at higher L shells for lower energies. Both boundaries are nearly straight in log(energy) versus L shell space. At energies below a few 100 keV, radiation belt electron penetration through the slot region into the inner zone is commonplace, but the number and frequency of “slot filling” events decreases with increasing energy. The inner zone is enhanced only at energies that penetrate through the slot. Energy- and L shell-dependent losses (that are consistent with whistler hiss interactions) return the belts to more quiescent conditions.},
doi = {10.1002/2015JA021569},
journal = {Journal of Geophysical Research. Space Physics},
number = 1,
volume = 121,
place = {United States},
year = {2016},
month = {1}
}
Web of Science
Works referenced in this record:
CEPPAD: Comprehensive energetic particle and pitch angle distribution experiment on POLAR
journal, February 1995
- Blake, J. B.; Fennell, J. F.; Friesen, L. M.
- Space Science Reviews, Vol. 71, Issue 1-4
Electron lifetimes from narrowband wave-particle interactions within the plasmasphere: Electron lifetimes from narrowband waves
journal, November 2014
- Ripoll, J. -F.; Albert, J. M.; Cunningham, G. S.
- Journal of Geophysical Research: Space Physics, Vol. 119, Issue 11
Event-specific chorus wave and electron seed population models in DREAM3D using the Van Allen Probes: Tu et al.: Event-specific chorus and seed electrons
journal, March 2014
- Tu, Weichao; Cunningham, G. S.; Chen, Y.
- Geophysical Research Letters, Vol. 41, Issue 5
Statistical properties of plasmaspheric hiss derived from Van Allen Probes data and their effects on radiation belt electron dynamics: PLASMASPHERIC HISS PROPERTIES AND EFFECT
journal, May 2015
- Li, W.; Ma, Q.; Thorne, R. M.
- Journal of Geophysical Research: Space Physics, Vol. 120, Issue 5
The Magnetic Electron Ion Spectrometer (MagEIS) Instruments Aboard the Radiation Belt Storm Probes (RBSP) Spacecraft
journal, June 2013
- Blake, J. B.; Carranza, P. A.; Claudepierre, S. G.
- Space Science Reviews, Vol. 179, Issue 1-4
Pitch-angle diffusion of radiation belt electrons within the plasmasphere
journal, July 1972
- Lyons, Lawrence R.; Thorne, Richard Mansergh; Kennel, Charles F.
- Journal of Geophysical Research, Vol. 77, Issue 19
An overview of the Solar Anomalous, and Magnetospheric Particle Explorer (SAMPEX) mission
journal, May 1993
- Baker, D. N.; Mason, G. M.; Figueroa, O.
- IEEE Transactions on Geoscience and Remote Sensing, Vol. 31, Issue 3
The energization of relativistic electrons in the outer Van Allen radiation belt
journal, July 2007
- Chen, Yue; Reeves, Geoffrey D.; Friedel, Reiner H. W.
- Nature Physics, Vol. 3, Issue 9
On long decays of electrons in the vicinity of the slot region observed by HEO3: HEO electron long decays in the slot
journal, January 2015
- Ripoll, J. -F.; Chen, Y.; Fennell, J. F.
- Journal of Geophysical Research: Space Physics, Vol. 120, Issue 1
Timescales for radiation belt electron acceleration and loss due to resonant wave-particle interactions: 2. Evaluation for VLF chorus, ELF hiss, and electromagnetic ion cyclotron waves: RADIATION BELT ELECTRON TIMESCALES
journal, April 2007
- Summers, Danny; Ni, Binbin; Meredith, Nigel P.
- Journal of Geophysical Research: Space Physics, Vol. 112, Issue A4
Rapid local acceleration of relativistic radiation-belt electrons by magnetospheric chorus
journal, December 2013
- Thorne, R. M.; Li, W.; Ni, B.
- Nature, Vol. 504, Issue 7480
Equilibrium structure of radiation belt electrons
journal, May 1973
- Lyons, Lawrence R.; Thorne, Richard Mansergh
- Journal of Geophysical Research, Vol. 78, Issue 13
Electron Acceleration in the Heart of the Van Allen Radiation Belts
journal, July 2013
- Reeves, G. D.; Spence, H. E.; Henderson, M. G.
- Science, Vol. 341, Issue 6149
Relativistic theory of wave-particle resonant diffusion with application to electron acceleration in the magnetosphere
journal, September 1998
- Summers, Danny; Thorne, Richard M.; Xiao, Fuliang
- Journal of Geophysical Research: Space Physics, Vol. 103, Issue A9
Main-phase creation of “seed” electrons in the outer radiation belt
journal, January 2000
- Obara, T.; Nagatsuma, T.; Den, M.
- Earth, Planets and Space, Vol. 52, Issue 1
Science Objectives and Rationale for the Radiation Belt Storm Probes Mission
journal, September 2012
- Mauk, B. H.; Fox, N. J.; Kanekal, S. G.
- Space Science Reviews, Vol. 179, Issue 1-4
CRRES magnetic electron spectrometer AFGL-701-5A (MEA)
journal, July 1992
- Vampola, A. L.; Osborn, J. V.; Johnson, B. M.
- Journal of Spacecraft and Rockets, Vol. 29, Issue 4
Propagation analysis of plasmaspheric hiss using Polar PWI measurements
journal, March 2001
- Santolík, O.; Parrot, M.; Storey, L. R. O.
- Geophysical Research Letters, Vol. 28, Issue 6
New Directions for Radiation Belt Research
journal, July 2009
- Chan, Anthony; Rodger, Craig; Reeves, Geoffrey D.
- Space Weather, Vol. 7, Issue 7
Relativistic electrons in the outer radiation belt: Differentiating between acceleration mechanisms
journal, January 2004
- Green, Janet C.
- Journal of Geophysical Research, Vol. 109, Issue A3
Van Allen Probes investigation of the large‐scale duskward electric field and its role in ring current formation and plasmasphere erosion in the 1 June 2013 storm
journal, June 2015
- Thaller, S. A.; Wygant, J. R.; Dai, L.
- Journal of Geophysical Research: Space Physics, Vol. 120, Issue 6
Phase space density analysis of the outer radiation belt energetic electron dynamics
journal, January 2006
- Iles, Roger H. A.; Meredith, Nigel P.; Fazakerley, Andrew N.
- Journal of Geophysical Research, Vol. 111, Issue A3
Nonlinear electric field structures in the inner magnetosphere
journal, August 2014
- Malaspina, D. M.; Andersson, L.; Ergun, R. E.
- Geophysical Research Letters, Vol. 41, Issue 16
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
- Baker, D. N.; Kanekal, S. G.; Hoxie, V. C.
- Space Science Reviews, Vol. 179, Issue 1-4
Dynamic relationship between the outer radiation belt and the plasmapause during March–May 2001
journal, January 2005
- Goldstein, J.
- Geophysical Research Letters, Vol. 32, Issue 15
Radiation Around the Earth to a Radial Distance of 107,400 km.
journal, February 1959
- Van Allen, James A.; Frank, Louis A.
- Nature, Vol. 183, Issue 4659
Correlation between the inner edge of outer radiation belt electrons and the innermost plasmapause location
journal, January 2006
- Li, Xinlin; Baker, D. N.; O'Brien, T. P.
- Geophysical Research Letters, Vol. 33, Issue 14
Van Allen Probes show that the inner radiation zone contains no MeV electrons: ECT/MagEIS data
journal, March 2015
- Fennell, J. F.; Claudepierre, S. G.; Blake, J. B.
- Geophysical Research Letters, Vol. 42, Issue 5
The geomagnetically trapped corpuscular radiation
journal, November 1959
- Van Allen, James A.
- Journal of Geophysical Research, Vol. 64, Issue 11
Energetic electron injections deep into the inner magnetosphere associated with substorm activity: Energetic particle injections at low L
journal, April 2015
- Turner, D. L.; Claudepierre, S. G.; Fennell, J. F.
- Geophysical Research Letters, Vol. 42, Issue 7
Slot region electron loss timescales due to plasmaspheric hiss and lightning-generated whistlers: SLOT REGION ELECTRON LOSS TIMESCALES
journal, August 2007
- Meredith, Nigel P.; Horne, Richard B.; Glauert, Sarah A.
- Journal of Geophysical Research: Space Physics, Vol. 112, Issue A8
An extreme distortion of the Van Allen belt arising from the ‘Hallowe'en’ solar storm in 2003
journal, December 2004
- Baker, D. N.; Kanekal, S. G.; Li, X.
- Nature, Vol. 432, Issue 7019
Helium, Oxygen, Proton, and Electron (HOPE) Mass Spectrometer for the Radiation Belt Storm Probes Mission
journal, March 2013
- Funsten, H. O.; Skoug, R. M.; Guthrie, A. A.
- Space Science Reviews, Vol. 179, Issue 1-4
An impenetrable barrier to ultrarelativistic electrons in the Van Allen radiation belts
journal, November 2014
- Baker, D. N.; Jaynes, A. N.; Hoxie, V. C.
- Nature, Vol. 515, Issue 7528
Substorm onsets observed by CRRES: Determination of energetic particle source regions
journal, June 1996
- Friedel, R. H. W.; Korth, A.; Kremser, G.
- Journal of Geophysical Research: Space Physics, Vol. 101, Issue A6
Acceleration and loss of relativistic electrons during geomagnetic storms: ACCELERATION AND LOSS OF RELATIVISTIC ELECTRONS
journal, May 2003
- Reeves, G. D.; McAdams, K. L.; Friedel, R. H. W.
- Geophysical Research Letters, Vol. 30, Issue 10
Quantifying the radiation belt seed population in the 17 March 2013 electron acceleration event
journal, April 2014
- Boyd, A. J.; Spence, H. E.; Claudepierre, S. G.
- Geophysical Research Letters, Vol. 41, Issue 7
Energetic outer zone electron loss timescales during low geomagnetic activity
journal, January 2006
- Meredith, Nigel P.; Horne, Richard B.; Glauert, Sarah A.
- Journal of Geophysical Research, Vol. 111, Issue A5
A background correction algorithm for Van Allen Probes MagEIS electron flux measurements: MAGEIS BACKGROUND CORRECTION ALGORITHM
journal, July 2015
- Claudepierre, S. G.; O'Brien, T. P.; Blake, J. B.
- Journal of Geophysical Research: Space Physics, Vol. 120, Issue 7
Science Goals and Overview of the Radiation Belt Storm Probes (RBSP) Energetic Particle, Composition, and Thermal Plasma (ECT) Suite on NASA’s Van Allen Probes Mission
journal, October 2013
- Spence, H. E.; Reeves, G. D.; Baker, D. N.
- Space Science Reviews, Vol. 179, Issue 1-4
Works referencing / citing this record:
Radiation belt electron acceleration during the 17 March 2015 geomagnetic storm: Observations and simulations: Radiation Belt Electron Acceleration
journal, June 2016
- Li, W.; Ma, Q.; Thorne, R. M.
- Journal of Geophysical Research: Space Physics, Vol. 121, Issue 6
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
- Baker, D. N.; Jaynes, A. N.; Kanekal, S. G.
- Journal of Geophysical Research: Space Physics, Vol. 121, Issue 7
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
- Zhang, X. ‐J.; Li, W.; Thorne, R. M.
- Journal of Geophysical Research: Space Physics, Vol. 121, Issue 9
The relationship between the plasmapause and outer belt electrons
journal, September 2016
- Goldstein, J.; Baker, D. N.; Blake, J. B.
- Journal of Geophysical Research: Space Physics, Vol. 121, Issue 9
Characteristic energy range of electron scattering due to plasmaspheric hiss: Electron Scattering by Hiss Waves
journal, December 2016
- Ma, Q.; Li, W.; Thorne, R. M.
- Journal of Geophysical Research: Space Physics, Vol. 121, Issue 12
On the origin of low‐energy electrons in the inner magnetosphere: Fluxes and pitch‐angle distributions
journal, February 2017
- Denton, M. H.; Reeves, G. D.; Larsen, B. A.
- Journal of Geophysical Research: Space Physics, Vol. 122, Issue 2
The hidden dynamics of relativistic electrons (0.7–1.5 MeV) in the inner zone and slot region
journal, March 2017
- Claudepierre, S. G.; O'Brien, T. P.; Fennell, J. F.
- Journal of Geophysical Research: Space Physics, Vol. 122, Issue 3
Scaling laws for the inner structure of the radiation belts: RADIATION BELT STRUCTURE
journal, April 2017
- Mourenas, D.; Ma, Q.; Artemyev, A. V.
- Geophysical Research Letters, Vol. 44, Issue 7
Rapid Loss of Radiation Belt Relativistic Electrons by EMIC Waves
journal, October 2017
- Su, Zhenpeng; Gao, Zhonglei; Zheng, Huinan
- Journal of Geophysical Research: Space Physics, Vol. 122, Issue 10
Systematic Evaluation of Low‐Frequency Hiss and Energetic Electron Injections
journal, October 2017
- Shi, Run; Li, Wen; Ma, Qianli
- Journal of Geophysical Research: Space Physics, Vol. 122, Issue 10
Energetic Particle Data From the Global Positioning System Constellation
journal, February 2017
- Morley, S. K.; Sullivan, J. P.; Carver, M. R.
- Space Weather, Vol. 15, Issue 2
Space Weather Effects Produced by the Ring Current Particles
journal, October 2017
- Ganushkina, Natalia; Jaynes, Allison; Liemohn, Michael
- Space Science Reviews, Vol. 212, Issue 3-4
Space Weather Effects in the Earth’s Radiation Belts
journal, December 2017
- Baker, D. N.; Erickson, P. J.; Fennell, J. F.
- Space Science Reviews, Vol. 214, Issue 1
The Response of the Energy Content of the Outer Electron Radiation Belt to Geomagnetic Storms
journal, October 2018
- Xiong, Ying; Xie, Lun; Chen, Lunjin
- Journal of Geophysical Research: Space Physics, Vol. 123, Issue 10
Determination of the Equatorial Electron Differential Flux From Observations at Low Earth Orbit
journal, November 2018
- Allison, Hayley J.; Horne, Richard B.; Glauert, Sarah A.
- Journal of Geophysical Research: Space Physics, Vol. 123, Issue 11
Earth's Van Allen Radiation Belts: From Discovery to the Van Allen Probes Era
journal, November 2019
- Li, W.; Hudson, M. K.
- Journal of Geophysical Research: Space Physics, Vol. 124, Issue 11
Transport and Loss of Ring Current Electrons Inside Geosynchronous Orbit During the 17 March 2013 Storm
journal, February 2019
- Aseev, N. A.; Shprits, Y. Y.; Wang, D.
- Journal of Geophysical Research: Space Physics, Vol. 124, Issue 2
The Response of Earth's Electron Radiation Belts to Geomagnetic Storms: Statistics From the Van Allen Probes Era Including Effects From Different Storm Drivers
journal, February 2019
- Turner, D. L.; Kilpua, E. K. J.; Hietala, H.
- Journal of Geophysical Research: Space Physics, Vol. 124, Issue 2
On the Initial Enhancement of Energetic Electrons and the Innermost Plasmapause Locations: Coronal Mass Ejection‐Driven Storm Periods
journal, November 2018
- Khoo, Leng Ying; Li, Xinlin; Zhao, Hong
- Journal of Geophysical Research: Space Physics, Vol. 123, Issue 11
Observations and Fokker‐Planck Simulations of the L ‐Shell, Energy, and Pitch Angle Structure of Earth's Electron Radiation Belts During Quiet Times
journal, February 2019
- Ripoll, J. ‐F.; Loridan, V.; Denton, M. H.
- Journal of Geophysical Research: Space Physics, Vol. 124, Issue 2
Outer Van Allen Radiation Belt Response to Interacting Interplanetary Coronal Mass Ejections
journal, March 2019
- Kilpua, E. K. J.; Turner, D. L.; Jaynes, A. N.
- Journal of Geophysical Research: Space Physics, Vol. 124, Issue 3
Dynamics of Megaelectron Volt Electrons Observed in the Inner Belt by PROBA‐V/EPT
journal, March 2019
- Pierrard, V.; Lopez Rosson, G.; Botek, E.
- Journal of Geophysical Research: Space Physics, Vol. 124, Issue 3
A Revised Look at Relativistic Electrons in the Earth's Inner Radiation Zone and Slot Region
journal, February 2019
- Claudepierre, S. G.; O'Brien, T. P.; Looper, M. D.
- Journal of Geophysical Research: Space Physics, Vol. 124, Issue 2
On the Importance of Gradients in the Low‐Energy Electron Phase Space Density for Relativistic Electron Acceleration
journal, April 2019
- Allison, Hayley J.; Horne, Richard B.; Glauert, Sarah A.
- Journal of Geophysical Research: Space Physics
Characterization and Evolution of Radiation Belt Electron Energy Spectra Based on the Van Allen Probes Measurements
journal, June 2019
- Zhao, H.; Johnston, W. R.; Baker, D. N.
- Journal of Geophysical Research: Space Physics, Vol. 124, Issue 6
Understanding Electron Dropout Echoes Induced by Interplanetary Shocks: Test Particle Simulations
journal, August 2019
- Liu, Y.; Zong, Q. ‐G.; Zhou, X. ‐Z.
- Journal of Geophysical Research: Space Physics, Vol. 124, Issue 8
How Sudden, Intense Energetic Electron Enhancements Correlate With the Innermost Plasmapause Locations Under Various Solar Wind Drivers and Geomagnetic Conditions
journal, November 2019
- Khoo, L. ‐Y.; Li, X.; Zhao, H.
- Journal of Geophysical Research: Space Physics, Vol. 124, Issue 11
Explaining the apparent impenetrable barrier to ultra-relativistic electrons in the outer Van Allen belt
journal, May 2018
- Ozeke, Louis G.; Mann, Ian R.; Murphy, Kyle R.
- Nature Communications, Vol. 9, Issue 1
From solar sneezing to killer electrons: outer radiation belt response to solar eruptions
journal, May 2019
- Daglis, Ioannis A.; Katsavrias, Christos; Georgiou, Marina
- Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 377, Issue 2148
Dynamics of Megaelectron Volt Electrons Observed in the Inner Belt by PROBA-V/EPT
text, January 2019
- Pierrard, Viviane; Rosson, Graciela Lopez; Botek, Edith
- arXiv