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Title: Plasma Anisotropies and Currents in the Near-Earth Plasma Sheet and Inner Magnetosphere

Abstract

The region occupying radial distances of ~3–9 Earth radii (RE) in the nightside includes the near-Earth plasma sheet with stretched magnetic field lines and the inner magnetosphere with strong dipolar magnetic field. In this region, the plasma flow energy, which was injected into the inner magnetosphere from the magnetotail, is converted to particle heating and electromagnetic wave generation. These important processes are controlled by plasma anisotropies, which are the focus here. Using measurements of Time History of Events and Macroscale Interactions during Substorms and Van Allen Probes in this transition region we obtain radial profiles of ion and electron temperatures and anisotropies for various geomagnetic activity levels. Ion and electron anisotropies vary with the geomagnetic activity in opposite directions. Parallel anisotropic ions are observed together with transversely anisotropic electrons, whereas the change of ion anisotropy from parallel to transverse (with increasing Kp) is accompanied by the electron anisotropy changing from transverse to parallel. Finally, based on plasma anisotropy observations, we estimate that the anisotropy-related currents (curvature currents) are about 10–20% of the diamagnetic currents.

Authors:
ORCiD logo [1]; ORCiD logo [2];  [2]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [4]
  1. Univ. of California, Los Angeles, CA (United States). Inst. of Geophysics and Planetary Physics; Russian Academy of Sciences (RAS), Moscow (Russian Federation). Space Research Inst.
  2. Univ. of California, Los Angeles, CA (United States). Inst. of Geophysics and Planetary Physics
  3. Univ. of New Hampshire, Durham, NH (United States). Inst. for the Study of Earth, Oceans, and Space
  4. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); New Mexico Consortium, Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Univ. of California, Los Angeles, CA (United States)
Sponsoring Org.:
USDOE; National Aeronautic and Space Administration (NASA)
OSTI Identifier:
1482009
Report Number(s):
LA-UR-18-27263
Journal ID: ISSN 2169-9380
Grant/Contract Number:  
AC52-06NA25396; NNX16AF84G; NAS5-02099; NAS5-01072; NNN06AA01C
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Geophysical Research. Space Physics
Additional Journal Information:
Journal Volume: 123; Journal Issue: 7; Journal ID: ISSN 2169-9380
Publisher:
American Geophysical Union
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 79 ASTRONOMY AND ASTROPHYSICS; plasma sheet; injections; inner magnetosphere; plasma currents

Citation Formats

Artemyev, A. V., Zhang, X. -J., Angelopoulos, V., Runov, A., Spence, H. E., and Larsen, B. A. Plasma Anisotropies and Currents in the Near-Earth Plasma Sheet and Inner Magnetosphere. United States: N. p., 2018. Web. doi:10.1029/2018JA025232.
Artemyev, A. V., Zhang, X. -J., Angelopoulos, V., Runov, A., Spence, H. E., & Larsen, B. A. Plasma Anisotropies and Currents in the Near-Earth Plasma Sheet and Inner Magnetosphere. United States. doi:https://doi.org/10.1029/2018JA025232
Artemyev, A. V., Zhang, X. -J., Angelopoulos, V., Runov, A., Spence, H. E., and Larsen, B. A. Sat . "Plasma Anisotropies and Currents in the Near-Earth Plasma Sheet and Inner Magnetosphere". United States. doi:https://doi.org/10.1029/2018JA025232. https://www.osti.gov/servlets/purl/1482009.
@article{osti_1482009,
title = {Plasma Anisotropies and Currents in the Near-Earth Plasma Sheet and Inner Magnetosphere},
author = {Artemyev, A. V. and Zhang, X. -J. and Angelopoulos, V. and Runov, A. and Spence, H. E. and Larsen, B. A.},
abstractNote = {The region occupying radial distances of ~3–9 Earth radii (RE) in the nightside includes the near-Earth plasma sheet with stretched magnetic field lines and the inner magnetosphere with strong dipolar magnetic field. In this region, the plasma flow energy, which was injected into the inner magnetosphere from the magnetotail, is converted to particle heating and electromagnetic wave generation. These important processes are controlled by plasma anisotropies, which are the focus here. Using measurements of Time History of Events and Macroscale Interactions during Substorms and Van Allen Probes in this transition region we obtain radial profiles of ion and electron temperatures and anisotropies for various geomagnetic activity levels. Ion and electron anisotropies vary with the geomagnetic activity in opposite directions. Parallel anisotropic ions are observed together with transversely anisotropic electrons, whereas the change of ion anisotropy from parallel to transverse (with increasing Kp) is accompanied by the electron anisotropy changing from transverse to parallel. Finally, based on plasma anisotropy observations, we estimate that the anisotropy-related currents (curvature currents) are about 10–20% of the diamagnetic currents.},
doi = {10.1029/2018JA025232},
journal = {Journal of Geophysical Research. Space Physics},
number = 7,
volume = 123,
place = {United States},
year = {2018},
month = {6}
}

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Works referenced in this record:

Deciphering magnetospheric cross-field currents: DECIPHERING MAGNETOSPHERIC CURRENTS
journal, October 2011

  • Liemohn, Michael W.; De Zeeuw, Darren L.; Ilie, Raluca
  • Geophysical Research Letters, Vol. 38, Issue 20
  • DOI: 10.1029/2011GL049611

Particle Acceleration in the Magnetotail and Aurora
journal, April 2012


How the Earth's inner magnetosphere works: An evolving picture
journal, March 2007

  • Wolf, R. A.; Spiro, R. W.; Sazykin, S.
  • Journal of Atmospheric and Solar-Terrestrial Physics, Vol. 69, Issue 3
  • DOI: 10.1016/j.jastp.2006.07.026

First Results from the THEMIS Mission
journal, June 2008


Circulation of Heavy Ions and Their Dynamical Effects in the Magnetosphere: Recent Observations and Models
journal, October 2014

  • Kronberg, Elena A.; Ashour-Abdalla, Maha; Dandouras, Iannis
  • Space Science Reviews, Vol. 184, Issue 1-4
  • DOI: 10.1007/s11214-014-0104-0

The effects of transient, localized electric fields on equatorial electron acceleration and transport toward the inner magnetosphere: LOCALIZED ELECTRIC FIELDS AND INJECTIONS
journal, October 2012

  • Gabrielse, C.; Angelopoulos, V.; Runov, A.
  • Journal of Geophysical Research: Space Physics, Vol. 117, Issue A10
  • DOI: 10.1029/2012JA017873

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


Evolution of the low-latitude geomagnetic storm field and the importance of turbulent diffusion for ring current particle losses
journal, November 1996

  • Grafe, A.; Trakhtengerts, V. Y.; Bespalov, P. A.
  • Journal of Geophysical Research: Space Physics, Vol. 101, Issue A11
  • DOI: 10.1029/96JA01559

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


Ion composition variations in the inner magnetosphere: Individual and collective storm effects in 1991
journal, December 2001

  • Fu, S. Y.; Wilken, B.; Zong, Q. G.
  • Journal of Geophysical Research: Space Physics, Vol. 106, Issue A12
  • DOI: 10.1029/2000JA900173

Anisotropy characteristics of geomagnetically trapped ions
journal, January 1985

  • Garcia, Howard A.; Spjeldvik, Walther N.
  • Journal of Geophysical Research: Space Physics, Vol. 90, Issue A1
  • DOI: 10.1029/JA090iA01p00347

Simulations of inner magnetosphere dynamics with an expanded RAM-SCB model and comparisons with Van Allen Probes observations
journal, April 2014

  • Jordanova, V. K.; Yu, Y.; Niehof, J. T.
  • Geophysical Research Letters, Vol. 41, Issue 8
  • DOI: 10.1002/2014GL059533

The proton ring current and its interaction with the plasmapause: Storm recovery phase
journal, October 1974


Distribution of density along magnetospheric field lines
journal, January 2006

  • Denton, R. E.; Takahashi, K.; Galkin, I. A.
  • Journal of Geophysical Research, Vol. 111, Issue A4
  • DOI: 10.1029/2005JA011414

The THEMIS Fluxgate Magnetometer
journal, May 2008


A two-dimensional, time-dependent, near-earth magnetotail
journal, January 1991


Bi-directional electron distributions associated with near-tail flux transport
journal, October 2001

  • Sergeev, V. A.; Baumjohann, W.; Shiokawa, K.
  • Geophysical Research Letters, Vol. 28, Issue 19
  • DOI: 10.1029/2001GL013334

Morphology of the ring current derived from magnetic field observations
journal, January 2004


Radial transport of storm time ring current ions
journal, January 1993

  • Lui, A. T. Y.
  • Journal of Geophysical Research: Space Physics, Vol. 98, Issue A1
  • DOI: 10.1029/92JA02079

Ion transport and loss in the Earth's quiet ring current: 1. Data and standard model
journal, August 1993

  • Sheldon, R. B.; Hamilton, D. C.
  • Journal of Geophysical Research: Space Physics, Vol. 98, Issue A8
  • DOI: 10.1029/92JA02869

Static magnetic field models consistent with nearly isotropic plasma pressure
journal, August 1987

  • Spence, Harlan E.; Kivelson, Margaret G.; Walker, Raymond J.
  • Geophysical Research Letters, Vol. 14, Issue 8
  • DOI: 10.1029/GL014i008p00872

Quasilinear analysis of saturation properties of broadband whistler mode waves: BROADBAND WHISTLER MODE WAVES
journal, August 2017

  • Tao, X.; Chen, L.; Liu, X.
  • Geophysical Research Letters, Vol. 44, Issue 16
  • DOI: 10.1002/2017GL074881

Storm-time distortion of the inner magnetosphere: How severe can it get?: DISTORTION OF THE INNER MAGNETOSPHERE
journal, May 2003

  • Tsyganenko, N. A.; Singer, H. J.; Kasper, J. C.
  • Journal of Geophysical Research: Space Physics, Vol. 108, Issue A5
  • DOI: 10.1029/2002JA009808

Plasma sheet pressure anisotropies
journal, July 1978

  • Stiles, G. S.; Hones, E. W.; Bame, S. J.
  • Journal of Geophysical Research: Space Physics, Vol. 83, Issue A7
  • DOI: 10.1029/JA083iA07p03166

Bi-directional electron pitch angle anisotropy in the plasma sheet
journal, January 1981

  • Hada, T.; Nishida, A.; Teresawa, T.
  • Journal of Geophysical Research, Vol. 86, Issue A13
  • DOI: 10.1029/JA086iA13p11211

A statistical study of the global structure of the ring current
journal, January 2004


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


Storm-substorm relationship: Contribution of the tail current to Dst
journal, October 2001

  • Ohtani, S.; Nosé, M.; Rostoker, G.
  • Journal of Geophysical Research: Space Physics, Vol. 106, Issue A10
  • DOI: 10.1029/2000JA000400

Ionospheric ions in the near-Earth magnetotail: IONOSPHERIC IONS IN THE MAGNETOTAIL
journal, August 2008

  • Chen, Sheng-Hsien; Moore, Thomas E.
  • Journal of Geophysical Research: Space Physics, Vol. 113, Issue A8
  • DOI: 10.1029/2007JA012816

Storm-time ring current: model-dependent results
journal, January 2012


Modeling ring current ion and electron dynamics and plasma instabilities during a high-speed stream driven storm: RING CURRENT DYNAMICS DURING HSS STORMS
journal, May 2012

  • Jordanova, V. K.; Welling, D. T.; Zaharia, S. G.
  • Journal of Geophysical Research: Space Physics, Vol. 117, Issue A9
  • DOI: 10.1029/2011JA017433

Steady magnetospheric convection: A review of recent results
journal, February 1996

  • Sergeev, V. A.; Pellinen, R. J.; Pulkkinen, T. I.
  • Space Science Reviews, Vol. 75, Issue 3-4
  • DOI: 10.1007/BF00833344

First current density measurements in the ring current region using simultaneous multi-spacecraft CLUSTER-FGM data
journal, January 2005


Plasma pressure distribution in the surrounding the Earth plasma ring and its role in the magnetospheric dynamics
journal, August 2014

  • Antonova, E. E.; Kirpichev, I. P.; Stepanova, M. V.
  • Journal of Atmospheric and Solar-Terrestrial Physics, Vol. 115-116
  • DOI: 10.1016/j.jastp.2013.12.005

Ring current modeling in a realistic magnetic field configuration
journal, July 1997

  • Fok, M. -C.; Moore, T. E.
  • Geophysical Research Letters, Vol. 24, Issue 14
  • DOI: 10.1029/97GL01255

Diversion of plasma due to high pressure in the inner magnetosphere during steady magnetospheric convection: SMC FLUX DIVERSION DUE TO HIGH PRESSURE
journal, May 2012

  • Kissinger, J.; McPherron, R. L.; Hsu, T. -S.
  • Journal of Geophysical Research: Space Physics, Vol. 117, Issue A5
  • DOI: 10.1029/2012JA017579

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

Plasma sheet pressure evolution related to substorms: SUBSTORM PLASMA SHEET PRESSURE
journal, January 2010

  • Xing, X.; Lyons, L. R.; Angelopoulos, V.
  • Journal of Geophysical Research: Space Physics, Vol. 115, Issue A1
  • DOI: 10.1029/2009JA014315

Empirical modeling of a CIR-driven magnetic storm: CIR-DRIVEN STORM MODELING
journal, July 2010

  • Sitnov, M. I.; Tsyganenko, N. A.; Ukhorskiy, A. Y.
  • Journal of Geophysical Research: Space Physics, Vol. 115, Issue A7
  • DOI: 10.1029/2009JA015169

Magnetic storms and magnetotail currents
journal, April 1996

  • Alexeev, I. I.; Belenkaya, E. S.; Kalegaev, V. V.
  • Journal of Geophysical Research: Space Physics, Vol. 101, Issue A4
  • DOI: 10.1029/95JA03509

The THEMIS ESA Plasma Instrument and In-flight Calibration
journal, October 2008


Near-Earth Magnetic Field Effects of Large-Scale Magnetospheric Currents
journal, July 2016


The magnetopause for large magnetic shear: AMPTE/IRM observations
journal, January 1986

  • Paschmann, G.; Papamastorakis, I.; Baumjohann, W.
  • Journal of Geophysical Research, Vol. 91, Issue A10
  • DOI: 10.1029/JA091iA10p11099

Simulations of ring current proton pitch angle distributions
journal, January 1998

  • Chen, Margaret W.; Roeder, James L.; Fennell, Joseph F.
  • Journal of Geophysical Research: Space Physics, Vol. 103, Issue A1
  • DOI: 10.1029/97JA02633

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


Tail Reconnection Triggering Substorm Onset
journal, August 2008


On the origin of plasma sheet reconfiguration during the substorm growth phase: GROWTH PHASE RETURN CONVECTION
journal, September 2017

  • Gordeev, Evgeny; Sergeev, Victor; Merkin, Viacheslav
  • Geophysical Research Letters, Vol. 44, Issue 17
  • DOI: 10.1002/2017GL074539

Relativistic model of ring current and radiation belt ions and electrons: Initial results: RADIATION BELT IONS AND ELECTRONS
journal, July 2005

  • Jordanova, V. K.; Miyoshi, Y.
  • Geophysical Research Letters, Vol. 32, Issue 14
  • DOI: 10.1029/2005GL023020

A review of pressure anisotropy caused by electron trapping in collisionless plasma, and its implications for magnetic reconnection
journal, June 2013

  • Egedal, Jan; Le, Ari; Daughton, William
  • Physics of Plasmas, Vol. 20, Issue 6
  • DOI: 10.1063/1.4811092

An average image of proton plasma pressure and of current systems in the equatorial plane derived from AMPTE/CCE-CHEM measurements
journal, December 1999

  • De Michelis, Paola; Daglis, Ioannis A.; Consolini, Giuseppe
  • Journal of Geophysical Research: Space Physics, Vol. 104, Issue A12
  • DOI: 10.1029/1999JA900310

Defining and resolving current systems in geospace
journal, January 2015


Review of modeling of losses and sources of relativistic electrons in the outer radiation belt II: Local acceleration and loss
journal, November 2008

  • Shprits, Yuri Y.; Subbotin, Dmitriy A.; Meredith, Nigel P.
  • Journal of Atmospheric and Solar-Terrestrial Physics, Vol. 70, Issue 14
  • DOI: 10.1016/j.jastp.2008.06.014

Self-consistent inner magnetosphere simulation driven by a global MHD model: INNER MAGNETOSPHERE MODEL
journal, December 2010

  • Zaharia, Sorin; Jordanova, V. K.; Welling, D.
  • Journal of Geophysical Research: Space Physics, Vol. 115, Issue A12
  • DOI: 10.1029/2010JA015915

Adiabatic evolution of trapped particle pitch angle distributions during a storm main phase
journal, June 1977


Average magnetotail electron and proton pitch angle distributions from Cluster PEACE and CIS observations: AVERAGE MAGNETOTAIL PITCH ANGLE DISTRIBUTIONS
journal, March 2011

  • Walsh, A. P.; Owen, C. J.; Fazakerley, A. N.
  • Geophysical Research Letters, Vol. 38, Issue 6
  • DOI: 10.1029/2011GL046770

Access of energetic particles to storm time ring current through enhanced radial “diffusion”
journal, January 1989


Evolution of electron pitch angle distributions following injection from the plasma sheet: ELECTRON PITCH ANGLE DISTRIBUTIONS
journal, April 2011

  • Tao, X.; Thorne, R. M.; Li, W.
  • Journal of Geophysical Research: Space Physics, Vol. 116, Issue A4
  • DOI: 10.1029/2010JA016245

    Works referencing / citing this record:

    Recent Advancements and Remaining Challenges Associated With Inner Magnetosphere Cross‐Energy/Population Interactions (IMCEPI)
    journal, February 2019

    • Yu, Yiqun; Liemohn, Mike W.; Jordanova, Vania K.
    • Journal of Geophysical Research: Space Physics, Vol. 124, Issue 2
    • DOI: 10.1029/2018ja026282