Transient, small-scale field-aligned currents in the plasma sheet boundary layer during storm time substorms

被引：29

作者：

Nakamura, R. ^{[1
]}

Sergeev, V. A. ^{[2
]}

Baumjohann, W. ^{[1
]}

Plaschke, F. ^{[1
]}

Magnes, W. ^{[1
]}

Fischer, D. ^{[1
]}

Varsani, A. ^{[1
]}

Schmid, D. ^{[1
]}

Nakamura, T. K. M. ^{[1
]}

Russell, C. T. ^{[3
,4
]}

Strangeway, R. J. ^{[3
,4
]}

Leinweber, H. K. ^{[3
,4
]}

Le, G. ^{[5
]}

Bromund, K. R. ^{[5
]}

Pollock, C. J. ^{[5
,6
]}

Giles, B. L. ^{[5
]}

Dorelli, J. C. ^{[5
]}

Gershman, D. J. ^{[5
]}

Paterson, W. ^{[5
]}

Avanov, L. A. ^{[5
]}

Fuselier, S. A. ^{[7
,8
]}

Genestreti, K. ^{[7
]}

Burch, J. L. ^{[7
]}

Torbert, R. B. ^{[7
,9
]}

Chutter, M. ^{[9
]}

Argall, M. R. ^{[9
]}

Anderson, B. J. ^{[10
]}

Lindqvist, P. -A. ^{[11
]}

Marklund, G. T. ^{[11
]}

Khotyaintsev, Y. V. ^{[12
]}

Mauk, B. H. ^{[10
]}

Cohen, I. J. ^{[10
]}

Baker, D. N. ^{[13
]}

Jaynes, A. N. ^{[13
]}

Ergun, R. E. ^{[13
]}

Singer, H. J. ^{[14
]}

Slavin, J. A. ^{[15
]}

Kepko, E. L. ^{[5
]}

Moore, T. E. ^{[5
]}

Lavraud, B. ^{[16
]}

Coffey, V. ^{[17
]}

Saito, Y. ^{[18
]}

机构：

[1] Austrian Acad Sci, Space Res Inst, A-8010 Graz, Austria

[2] St Petersburg State Univ, Earth Phys Dept, St Petersburg 199034, Russia

[3] Univ Calif Los Angeles, Inst Geophys & Planetary Phys, Los Angeles, CA 90024 USA

[4] Univ Calif Los Angeles, Dept Earth & Space Sci, Los Angeles, CA 90024 USA

[5] NASA, Goddard Space Flight Ctr, College Pk, MD USA

[6] Denali Sci, Healy, AK USA

[7] SW Res Inst, San Antonio, TX USA

[8] Univ Texas San Antonio, San Antonio, TX USA

[9] Univ New Hampshire, Dept Phys, Durham, NH 03824 USA

[10] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD USA

[11] Royal Inst Technol, Space & Plasma Phys, Stockholm, Sweden

[12] Swedish Inst Space Phys, Uppsala, Sweden

[13] Univ Colorado, Boulder, CO 80309 USA

[14] NOAA, Space Weather Predict Ctr, Boulder, CO USA

[15] Univ Michigan, Dept Climate & Space Sci & Engn, Ann Arbor, MI 48109 USA

[16] CNRS, Toulouse, France

[17] NASA, George C Marshall Space Flight Ctr, Huntsville, AL 35812 USA

[18] JAXA Inst Space & Astronaut Sci, Sagamihara, Kanagawa, Japan

来源：

GEOPHYSICAL RESEARCH LETTERS | 2016年 / 43卷 / 10期

基金：

奥地利科学基金会;

关键词：

IONS;

D O I：

10.1002/2016GL068768

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

We report on field-aligned current observations by the four Magnetospheric Multiscale (MMS) spacecraft near the plasma sheet boundary layer (PSBL) during two major substorms on 23 June 2015. Small-scale field-aligned currents were found embedded in fluctuating PSBL flux tubes near the separatrix region. We resolve, for the first time, short-lived earthward (downward) intense field-aligned current sheets with thicknesses of a few tens of kilometers, which are well below the ion scale, on flux tubes moving equatorward/earthward during outward plasma sheet expansion. They coincide with upward field-aligned electron beams with energies of a few hundred eV. These electrons are most likely due to acceleration associated with a reconnection jet or high-energy ion beam-produced disturbances. The observations highlight coupling of multiscale processes in PSBL as a consequence of magnetotail reconnection.

引用

页码：4841 / 4849

页数：9

共 50 条

[1] Small-scale Field-aligned Currents in the Magnetopause Boundary Layer
Wang, C. M.
Huang, S. Y.
Yuan, Z. G.
Zhou, M.
Jiang, K.
Xu, S. B.
Xiong, Q. Y.
Lin, L. T.
[J]. ASTROPHYSICAL JOURNAL, 2024, 965 (01):
[2] Responses of the field-aligned currents in the plasma sheet boundary layer to a geomagnetic storm
Chen, YuanQiang
Wu, MingYu
Chen, YangJun
Xiao, SuDong
Wang, GuoQiang
Zhang, TieLong
[J]. EARTH AND PLANETARY PHYSICS, 2023, 7 (05) : 558 - 564
[3] Responses of the field-aligned currents in the plasma sheet boundary layer to a geomagnetic storm
YuanQiang Chen
MingYu Wu
YangJun Chen
SuDong Xiao
GuoQiang Wang
TieLong Zhang
[J]. Earth and Planetary Physics, 2023, 7 (05) : 558 - 564
[4] Statistical Characteristics of Field-Aligned Currents in the Plasma Sheet Boundary Layer
Chen, Y. Q.
Wu, M.
Zhang, T. L.
Huang, Y.
Wang, G. Q.
Nakamura, R.
Baumjohann, W.
Russell, C. T.
Giles, B. J.
Burch, J. L.
[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2021, 126 (02)
[5] Small Spatial-Scale Field-Aligned Currents in the Plasma Sheet Boundary Layer Surveyed by Magnetosphere Multiscale Spacecraft
Chen, Yuanqiang
Zhang, Tielong
Wu, Mingyu
Wang, Guoqiang
Schmid, Daniel
Baumjohann, Wolfgang
Nakamura, Rumi
Russell, Christopher T.
Giles, Barbara J.
Burch, James L.
[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2019, 124 (12) : 9976 - 9985
[6] Field-aligned currents in the outermost plasma sheet boundary layer with Geotail observation
Ueno, G
Ohtani, S
Saito, Y
Mukai, T
[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2002, 107 (A11)
[7] Small-scale field-aligned currents and plasma motion in auroral arcs
Shibkov, SA
Pudovkin, MI
Kotikov, AL
[J]. GEOMAGNETISM AND AERONOMY, 2005, 45 (04) : 410 - 416
[8] SUPRATHERMAL ELECTRONS IN SMALL-SCALE FIELD-ALIGNED CURRENTS
BANKOV, L
BANKOV, N
BOCHEV, A
KUTIEV, I
TODORIEVA, L
DUBININ, EM
PODGORNY, IM
POTANIN, YN
[J]. GEOPHYSICAL RESEARCH LETTERS, 1986, 13 (02) : 105 - 108
[9] SMALL-SCALE MAGNETIC DISTURBANCES - WAVES OR SMALL-SCALE FIELD-ALIGNED CURRENTS
NENOVSKI, P
[J]. DOKLADI NA BOLGARSKATA AKADEMIYA NA NAUKITE, 1991, 44 (10): : 47 - 50
[10] Carriers of the Field-Aligned Currents in the Plasma Sheet Boundary Layer: An MMS Multicase Study
Chen, YuanQiang
Wu, Mingyu
Wang, Guoqiang
Schmid, Daniel
Zhang, Tielong
Nakamura, Rumi
Baumjohann, Wolfgang
Burch, James L.
Giles, Barbara J.
Russell, Christopher T.
[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2019, 124 (04) : 2873 - 2886

← 1 2 3 4 5 →