skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: O + ion conic and plasma sheet dynamics observed by Van Allen Probe satellites during the 1 June 2013 magnetic storm: Energetic Inner Magnetosphere O + Ions

Abstract

The Van Allen Probe satellites were near apogee in the late evening local time sector during the 1 June 2013 magnetic storm's main phase. About an hour after crossing the ring current's “nose structure” into the plasma sheet, the satellites encountered a quasiperiodic sequence of 0.08–3 keV O+ ions. Pitch angle distributions of this population consistently peaked nearly antiparallel to the local magnetic field. We then interpret this population as O+ conics originating in the northern ionosphere. The sequences began as fairly steady state conic fluxes with energies in the ~ 80 to 100 eV range. Over about a half hour buildup phase, O+ energies peaked near 1 keV. During subsequent release phases lasting ~ 20 min, O+ energies returned to low-energy starting points. We argue these observations reflect repeated formations and dissolutions of downward, magnetically aligned electric fields (ε||) layers trapping O+ conics between mirror points within heating layers below and electrostatic barriers above. Nearly identical variations were observed at the locations of both satellites during 9 of these 13 conic cycles. Phase differences between cycles were observed at both spacecraft during the remaining events. Most “buildup” to “release” phase transitions coincided with AL index minima. But, in situmore » magnetometer measurements indicate only weak dipolarizations of tail-like magnetic fields. The lack of field-aligned reflected O+ and tail-like magnetic fields suggest that both ionospheres may be active. However, Southern Hemisphere origin conics cannot be observed since they would be isotropized and accelerated during neutral sheet crossings.« less

Authors:
 [1];  [2];  [3];  [2];  [4]; ORCiD logo [5];  [6]
  1. Boston College, Chestnut Hill, MA (United States). Inst. for Scienctific Research
  2. MIT Haystack Observatory, Westford, MA (United States)
  3. Univ. of Massachusetts, Lowell, MA (United States). Center for Atmospheric Research
  4. Univ. of Minnesota, Minneapolis, MN (United States). Dept. of Physics and Astronomy
  5. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  6. Univ. of Iowa, Iowa City, IA (United States). Dept. of Physics and Astronomy
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE; National Aeronautic and Space Administration (NASA)
OSTI Identifier:
1402592
Report Number(s):
LA-UR-15-27238
Journal ID: ISSN 2169-9380; TRN: US1702997
Grant/Contract Number:  
AC52-06NA25396
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Geophysical Research. Space Physics
Additional Journal Information:
Journal Volume: 121; Journal Issue: 5; Journal ID: ISSN 2169-9380
Publisher:
American Geophysical Union
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; Heliospheric and Magnetospheric Physics

Citation Formats

Burke, W. J., Erickson, P. J., Yang, J., Foster, J., Wygant, J., Reeves, G., and Kletzing, C. O + ion conic and plasma sheet dynamics observed by Van Allen Probe satellites during the 1 June 2013 magnetic storm: Energetic Inner Magnetosphere O + Ions. United States: N. p., 2016. Web. doi:10.1002/2015JA021795.
Burke, W. J., Erickson, P. J., Yang, J., Foster, J., Wygant, J., Reeves, G., & Kletzing, C. O + ion conic and plasma sheet dynamics observed by Van Allen Probe satellites during the 1 June 2013 magnetic storm: Energetic Inner Magnetosphere O + Ions. United States. doi:10.1002/2015JA021795.
Burke, W. J., Erickson, P. J., Yang, J., Foster, J., Wygant, J., Reeves, G., and Kletzing, C. Sat . "O + ion conic and plasma sheet dynamics observed by Van Allen Probe satellites during the 1 June 2013 magnetic storm: Energetic Inner Magnetosphere O + Ions". United States. doi:10.1002/2015JA021795. https://www.osti.gov/servlets/purl/1402592.
@article{osti_1402592,
title = {O + ion conic and plasma sheet dynamics observed by Van Allen Probe satellites during the 1 June 2013 magnetic storm: Energetic Inner Magnetosphere O + Ions},
author = {Burke, W. J. and Erickson, P. J. and Yang, J. and Foster, J. and Wygant, J. and Reeves, G. and Kletzing, C.},
abstractNote = {The Van Allen Probe satellites were near apogee in the late evening local time sector during the 1 June 2013 magnetic storm's main phase. About an hour after crossing the ring current's “nose structure” into the plasma sheet, the satellites encountered a quasiperiodic sequence of 0.08–3 keV O+ ions. Pitch angle distributions of this population consistently peaked nearly antiparallel to the local magnetic field. We then interpret this population as O+ conics originating in the northern ionosphere. The sequences began as fairly steady state conic fluxes with energies in the ~ 80 to 100 eV range. Over about a half hour buildup phase, O+ energies peaked near 1 keV. During subsequent release phases lasting ~ 20 min, O+ energies returned to low-energy starting points. We argue these observations reflect repeated formations and dissolutions of downward, magnetically aligned electric fields (ε||) layers trapping O+ conics between mirror points within heating layers below and electrostatic barriers above. Nearly identical variations were observed at the locations of both satellites during 9 of these 13 conic cycles. Phase differences between cycles were observed at both spacecraft during the remaining events. Most “buildup” to “release” phase transitions coincided with AL index minima. But, in situ magnetometer measurements indicate only weak dipolarizations of tail-like magnetic fields. The lack of field-aligned reflected O+ and tail-like magnetic fields suggest that both ionospheres may be active. However, Southern Hemisphere origin conics cannot be observed since they would be isotropized and accelerated during neutral sheet crossings.},
doi = {10.1002/2015JA021795},
journal = {Journal of Geophysical Research. Space Physics},
number = 5,
volume = 121,
place = {United States},
year = {2016},
month = {5}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 2 works
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

Modeling the dynamics of the inner magnetosphere during strong geomagnetic storms
journal, January 2005


Statistical and functional representations of the pattern of auroral energy flux, number flux, and conductivity
journal, January 1987

  • Hardy, D. A.; Gussenhoven, M. S.; Raistrick, R.
  • Journal of Geophysical Research, Vol. 92, Issue A11
  • DOI: 10.1029/JA092iA11p12275

The Electric and Magnetic Field Instrument Suite and Integrated Science (EMFISIS) on RBSP
journal, June 2013


Particle trajectories in model current sheets: 1. Analytical solutions
journal, September 1965


Energization of O + ions in the Earth's inner magnetosphere and the effects on ring current buildup: A review of previous observations and possible mechanisms : A REVIEW OF O
journal, July 2013

  • Keika, Kunihiro; Kistler, Lynn M.; Brandt, Pontus C.
  • Journal of Geophysical Research: Space Physics, Vol. 118, Issue 7
  • DOI: 10.1002/jgra.50371

Electrodynamics of the inner magnetosphere observed in the dusk sector by CRRES and DMSP during the magnetic storm of June 4-6, 1991
journal, December 1998

  • Burke, W. J.; Maynard, N. C.; Hagan, M. P.
  • Journal of Geophysical Research: Space Physics, Vol. 103, Issue A12
  • DOI: 10.1029/98JA02197

Trajectory Traces of Charged Particles in the Magnetosphere
journal, January 1978


Topside current instabilities
journal, May 1971


Science Objectives and Rationale for the Radiation Belt Storm Probes Mission
journal, September 2012


Sawtooth-substorm connections: A closer look: SAWTOOTH-SUBSTORM CONNECTIONS CASE STUDY
journal, August 2013

  • Noah, M. A.; Burke, W. J.
  • Journal of Geophysical Research: Space Physics, Vol. 118, Issue 8
  • DOI: 10.1002/jgra.50440

The terrestrial ring current: Origin, formation, and decay
journal, November 1999

  • Daglis, Ioannis A.; Thorne, Richard M.; Baumjohann, Wolfgang
  • Reviews of Geophysics, Vol. 37, Issue 4
  • DOI: 10.1029/1999RG900009

The Electric Field and Waves Instruments on the Radiation Belt Storm Probes Mission
journal, October 2013


Direct observations in the dusk hours of the characteristics of the storm time ring current particles during the beginning of magnetic storms
journal, March 1974


Satellite observations of energetic heavy ions during a geomagnetic storm
journal, November 1972

  • Shelley, E. G.; Johnson, R. G.; Sharp, R. D.
  • Journal of Geophysical Research, Vol. 77, Issue 31
  • DOI: 10.1029/JA077i031p06104

Growth phase of magnetospheric substorms
journal, October 1970


Helium, Oxygen, Proton, and Electron (HOPE) Mass Spectrometer for the Radiation Belt Storm Probes Mission
journal, March 2013


Ring current composition and sources: An update
journal, November 1981


A survey of low-energy electrons in the evening sector of the magnetosphere with OGO 1 and OGO 3
journal, May 1968


The May 2-3, 1986 CDAW-9C interval: A sawtooth event: THE CDAW-9C INTERVAL-A SAWTOOTH EVENT
journal, June 2004


Quantitative simulation of a magnetospheric substorm 1. Model logic and overview
journal, January 1981

  • Harel, M.; Wolf, R. A.; Reiff, P. H.
  • Journal of Geophysical Research, Vol. 86, Issue A4
  • DOI: 10.1029/JA086iA04p02217