Identifying STEVE's Magnetospheric Driver Using Conjugate Observations in the Magnetosphere and on the Ground

被引：34

作者：

Chu, Xiangning ^{[1
]}

Malaspina, David ^{[1
]}

Gallardo-Lacourt, Bea ^{[2
]}

Liang, Jun ^{[2
]}

Andersson, Laila ^{[1
]}

Ma, Qianli ^{[3
]}

Artemyev, Anton ^{[4
]}

Liu, Jiang ^{[3
]}

Ergun, Robert E. ^{[1
]}

Thaller, Scott ^{[1
]}

Akbari, Hassanali ^{[1
]}

Zhao, Hong ^{[1
]}

Larsen, Brian ^{[5
]}

Reeves, Geoffrey ^{[5
]}

Wygant, John ^{[6
]}

Breneman, Aaron ^{[6
]}

Tian, Sheng ^{[6
]}

Connors, Martin ^{[7
]}

Donovan, Eric ^{[2
]}

Archer, William ^{[8
]}

MacDonald, Elizabeth A. ^{[9
]}

机构：

[1] Univ Colorado, Atmospher & Space Phys Lab, Campus Box 392, Boulder, CO 80309 USA

[2] Univ Calgary, Dept Phys & Astron, Calgary, AB, Canada

[3] Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA USA

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

[5] Los Alamos Natl Lab, Los Alamos, NM USA

[6] Univ Minnesota, Dept Phys, Minneapolis, MN 55455 USA

[7] Athabasca Univ Observ, Athabasca, AB, Canada

[8] Univ Saskatchewan, Dept Phys & Engn Phys, Saskatoon, SK, Canada

[9] NASA, Goddard Space Flight Ctr, Greenbelt, MD USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 2019年 / 46卷 / 22期

关键词：

STEVE; subauroral ion drift; stable red auroral arc; plasmapause; aurora; kinetic Alfven wave; SUBAURORAL ION DRIFTS; AURORAL RED ARCS; ELECTRIC-FIELD; POLARIZATION JET; ALFVEN WAVES; PENETRATION; CONSTELLATION; ACCELERATION; UNDULATIONS; BOUNDARIES;

D O I：

10.1029/2019GL082789

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The magnetospheric driver of strong thermal emission velocity enhancement (STEVE) is investigated using conjugate observations when Van Allen Probes' footprint directly crossed both STEVE and stable red aurora (SAR) arc. In the ionosphere, STEVE is associated with subauroral ion drift features, including electron temperature peak, density gradient, and westward ion flow. The SAR arc at lower latitudes corresponds to regions inside the plasmapause with isotropic plasma heating, which causes redline-only SAR emission via heat conduction. STEVE corresponds to the sharp plasmapause boundary containing quasi-static subauroral ion drift electric field and parallel-accelerated electrons by kinetic Alfven waves. These parallel electrons could precipitate and be accelerated via auroral acceleration processes powered by Alfven waves propagating along the magnetic field with the plasmapause as a waveguide. The electron precipitation, superimposed on the heat conduction, could explain multiwavelength continuous STEVE emission. The green picket-fence emissions are likely optical manifestations of electron precipitation associated with wave structures traveling along the plasmapause.

引用

页码：12665 / 12674

页数：10

共 69 条

[1] A PROPOSED PRODUCTION-MODEL OF RAPID SUBAURORAL ION DRIFTS AND THEIR RELATIONSHIP TO SUBSTORM EVOLUTION [J].

ANDERSON, PC ;

HANSON, WB ;

HEELIS, RA ;

CRAVEN, JD ;

BAKER, DN ;

FRANK, LA .

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 1993, 98 (A4) :6069-6078

[2] The Space Physics Environment Data Analysis System (SPEDAS) [J].

Angelopoulos, V. ;

Cruce, P. ;

Drozdov, A. ;

Grimes, E. W. ;

Hatzigeorgiu, N. ;

King, D. A. ;

Larson, D. ;

Lewis, J. W. ;

McTiernan, J. M. ;

Roberts, D. A. ;

Russell, C. L. ;

Hori, T. ;

Kasahara, Y. ;

Kumamoto, A. ;

Matsuoka, A. ;

Miyashita, Y. ;

Miyoshi, Y. ;

Shinohara, I. ;

Teramoto, M. ;

Faden, J. B. ;

Halford, A. J. ;

McCarthy, M. ;

Millan, R. M. ;

Sample, J. G. ;

Smith, D. M. ;

Woodger, L. A. ;

Masson, A. ;

Narock, A. A. ;

Asamura, K. ;

Chang, T. F. ;

Chiang, C. -Y. ;

Kazama, Y. ;

Keika, K. ;

Matsuda, S. ;

Segawa, T. ;

Seki, K. ;

Shoji, M. ;

Tam, S. W. Y. ;

Umemura, N. ;

Wang, B. -J. ;

Wang, S. -Y. ;

Redmon, R. ;

Rodriguez, J. V. ;

Singer, H. J. ;

Vandegriff, J. ;

Abe, S. ;

Nose, M. ;

Shinbori, A. ;

Tanaka, Y. -M. ;

UeNo, S. .

SPACE SCIENCE REVIEWS, 2019, 215 (01)

[3] Electron trapping and acceleration by kinetic Alfven waves in the inner magnetosphere [J].

Artemyev, A. V. ;

Rankin, R. ;

Blanco, M. .

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2015, 120 (12) :10305-10316

[4]

BARBIER D, 1958, ANN GEOPHYS, V14, P334

[5] Thermally excited 630.0nm O(1D) emission in the cusp: A frequent high-altitude transient signature [J].

Carlson, Herbert C. ;

Oksavik, Kjellmar ;

Moen, Joran I. .

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2013, 118 (09) :5842-5852

[6] Properties of small-scale Alfve'n waves and accelerated electrons from FAST [J].

Chaston, CC ;

Bonnell, JW ;

Carlson, CW ;

McFadden, JP ;

Ergun, RE ;

Strangeway, RJ .

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2003, 108 (A4)

[7] Observations of kinetic scale field line resonances [J].

Chaston, Christopher C. ;

Bonnell, John W. ;

Wygant, John R. ;

Mozer, Forrest ;

Bale, Stuart D. ;

Kersten, Kris ;

Breneman, Aaron W. ;

Kletzing, Craig A. ;

Kurth, William S. ;

Hospodarsky, George B. ;

Smith, Charles W. ;

MacDonald, Elizabeth A. .

GEOPHYSICAL RESEARCH LETTERS, 2014, 41 (02) :209-215

[8]

DAVIS TN, 1978, SPACE SCI REV, V22, P77, DOI 10.1007/BF00215814

[9] ON WAVE-GUIDE PROPAGATION OF ALFVEN WAVES AT THE PLASMAPAUSE [J].

DMITRIENKO, IS ;

MAZUR, VA .

PLANETARY AND SPACE SCIENCE, 1985, 33 (05) :471-477

[10] Direct observation of localized parallel electric fields in a space plasma [J].

Ergun, RE ;

Su, YJ ;

Andersson, L ;

Carlson, CW ;

McFadden, JP ;

Mozer, FS ;

Newman, DL ;

Goldman, MV ;

Strangeway, RJ .

PHYSICAL REVIEW LETTERS, 2001, 87 (04) :45003-1

← 1 2 3 4 5 6 7 →