Volume 36 Issue 6
Nov.  2016
Turn off MathJax
Article Contents
SHI Jiankui, ZHANG Ziying, TORKAR Klaus, WANG Zheng, CHENG Zhengwei, WANG Guojun. Study on Energy Features During a Field-Aligned Electron Events in the Cusp Region[J]. Chinese Journal of Space Science, 2016, 36(6): 849-856. doi: 10.11728/cjss2016.06.849
Citation: SHI Jiankui, ZHANG Ziying, TORKAR Klaus, WANG Zheng, CHENG Zhengwei, WANG Guojun. Study on Energy Features During a Field-Aligned Electron Events in the Cusp Region[J]. Chinese Journal of Space Science, 2016, 36(6): 849-856. doi: 10.11728/cjss2016.06.849

Study on Energy Features During a Field-Aligned Electron Events in the Cusp Region

doi: 10.11728/cjss2016.06.849
  • Received Date: 2016-03-04
  • Rev Recd Date: 2016-05-10
  • Publish Date: 2016-11-15
  • By focusing on an extremely disturbed field-aligned electrons event observed with Cluster in the northern cusp region on 30 September 2001, the energy features of the field-aligned electrons in the event is analyzed and the roles of the field-aligned electrons on the transmission of solar wind energy to the magnetosphere and on the magnetosphere-ionosphere coupling are discussed. The results show that the velocities and densities of the electrons have strong disturbances during the event, and the velocity is a main factor to enhance the electron flux. The electron energy spectrum in 5~200eV and 500~1500eV show that the up-flowing electron flux is higher than that of down-flowing, which means the up-flowing electrons mainly come from the ionosphere and play an active role in this event. The energy features show that the ionospheric electrons have been accelerated during the up-flowing. However, the accelerating physical mechanism still needs to be further studied.

     

  • loading
  • [1]
    HOFFMAN R A, EVANS D S. Field-aligned electron bursts at high latitudes observed by OGO 4[J]. J. Geophys. Res., 1968, 73(19):6201-6214
    [2]
    LIN C S, HOFFMAN R A. Fluctuations of inverted V electron fluxes[J]. J. Geophys. Res., 1979, 84(1):6547-6553
    [3]
    ZANETTI L J, POTEMRA T A, DOERING J P, et al. Magnetic field-aligned electron distributions in the dayside cusp[J]. J. Geophys. Res., 1981, 86(A11):8957-8970
    [4]
    KLUMPAR D M. Upward streaming auroral zone electrons[J]. EOS Trans. AGU, 1981, 62:359
    [5]
    SHARP R D, SHELLEY E G, JOHNSON R G, et al. Counterstreaming electron beams at altitudes of ~1Re over the auroral zone[J]. J. Geophys. Res., 1980, 85(A1):92-100
    [6]
    BERKO F W. Distributions and characteristics of high-latitude field-aligned electron precipitation[J]. J. Geophys. Res., 1973, 78(10):1615-1626
    [7]
    COLLIN H L, SHARP R D, SHELLEY E G. The occurrence and characteristics of electron beams over the polar regions[J]. J. Geophys. Res., 1982, 87(A9):7504-7511
    [8]
    BANKOV L, BANKOV N, BOCHEV A, et al. Suprathermal electrons in small-scale field-aligned currents[J]. Geophys. Res. Lett., 1986, 13(2):105-108
    [9]
    ZHANG Ziying, SHI Jiankui, CHENG Zhengwei, ANDREW F. Field-aligned electrons in polar region observed by Cluster on 30 September 2001[J]. Chin. Phys. Lett., 2012, 29(29):099401
    [10]
    TESTE A, FONTAINE D, SAUVAUD J A, et al. Cluster observations of electron outflowing beams carrying downward currents above the polar cap by northward IMF[J]. Ann. Geophys., 2007, 25:953-969
    [11]
    ABEL G A, FAZAKERLEY A N, JOHNSTONE A D. Statistical distributions of field-aligned electron events in the near-equatorial magnetosphere observed by the low energy plasma analyzer on CRRES[J]. J. Geophys. Res., 2002, 107(A11):SMP29-1-SMP29-11
    [12]
    MA Y D, CAO J B, NAKAMURA R, et al. Statistical analysis of earthward flow bursts in the inner plasma sheet during substorms[J]. J. Geophys. Res., 2009, 114(A7): A07215
    [13]
    KINTNER P M, ACKERSON K L, GURNETT D A, et al. Correlated electric field and low-energy electron measurements in the low-altitude polar cusp[J]. J. Geophys. Res., 1978, 83(A1):163-168
    [14]
    TORBERT R B, CARLSON C W. Evidence for parallel electric field particle acceleration in the dayside auroral oval[J]. J. Geophys. Res., 1980, 85(A6):2909-2914
    [15]
    BURCH J L, REIFF P H, SUGIURA M. Upward electron beams measured by DE-1: a primary source of dayside region-1 Birkeland currents[J]. J. Geophys. Res., 1983, 10(8):753-756
    [16]
    ALFVÉN H. On the electric field theory of magnetic storms and aurorae[J]. Tellus, 1955, 7(1):50-64
    [17]
    ALFVÉN H. On the theory of magnetic storms and aurorae[J]. Tellus, 1958, 10(1):104-116
    [18]
    SHI, J, ZHANG Z. TORKAR K, et al. Temporal and spatial scales of a high-flux electron disturbance in the cusp region: Cluster observations[J]. J. Geophys. Res. Space Physics, 2014, 119:4536-4543
    [19]
    ESCOUBET C P, FEHRINGER M, GOLDSTEIN M. The Cluster mission[J]. Ann. Geophys., 2001, 19(10/11/12): 1197-1200
    [20]
    JOHNSTONE A D, ALSOP C, BURGE S, et al. Peace: a plasma electron and current experiment[J]. Space Sci. Rev., 1997, 79(1-2):351-398
    [21]
    BALOGH A, CARR C M, ACUÑ M H, et al. The Cluster magnetic field investigation: overview of in-flight performance and initial results[J]. Ann. Geophys., 2001, 19(10/11/12):1207-1217
    [22]
    ZHOU X W, RUSSELL C T, LE G, et al. The polar cusp location and its dependence on dipole tilt[J]. Geophys. Res. Lett., 1999, 26:429-432
    [23]
    ZONG Q G, FRITZ T A, KORTH A, et al. Energetic electrons as a field line topology tracer in the high latitude boundary/cusp region: Cluster PAPID observations[J]. Surv. Geophys., 2001, 26(1-3):215-240
    [24]
    KLUMPAR D M, HEIKKILA W J. Electrons in the ionospheric source cone: evidence for runaway electrons as carriers of downward Birkeland currents[J]. Geophys. Res., Lett., 1982, 9(8):873-876
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Article Metrics

    Article Views(881) PDF Downloads(796) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return