Plasma sheet disruption by interchange-generated flow intrusions

被引：77

作者：

Pritchett, P. L. ^{[1
]}

Coroniti, F. V. ^{[1
]}

机构：

[1] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 2011年 / 38卷

关键词：

SUBSTORM ONSET; TAIL;

D O I：

10.1029/2011GL047527

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

A three-dimensional particle-in-cell simulation is used to examine the interaction of interchange-generated flow intrusions with the near-Earth plasma sheet. The interchange heads narrow in cross-tail extent as they propagate earthward and dawnward, and the maximum B-z in the head increases to be comparable to the lobe field strength. The interaction of the flow heads with the near-Earth plasma sheet leads to a strong disruption involving localized reconnection on east-west scales of a few ion inertia lengths. This mechanism may explain several key signatures of substorm onset associated with pre-breakup auroral streamers and the disruption of the near-Earth plasma sheet. Citation: Pritchett, P. L., and F. V. Coroniti (2011), Plasma sheet disruption by interchange-generated flow intrusions, Geophys. Res. Lett., 38, L10102, doi:10.1029/2011GL047527.

引用

页数：5

共 12 条

[1] THE DEVELOPMENT OF THE AURORAL SUBSTORM [J].

AKASOFU, SI .

PLANETARY AND SPACE SCIENCE, 1964, 12 (04) :273-282

[2] Tail reconnection triggering substorm onset [J].

Angelopoulos, Vassilis ;

McFadden, James P. ;

Larson, Davin ;

Carlson, Charles W. ;

Mende, Stephen B. ;

Frey, Harald ;

Phan, Tai ;

Sibeck, David G. ;

Glassmeier, Karl-Heinz ;

Auster, Uli ;

Donovan, Eric ;

Mann, Ian R. ;

Rae, I. Jonathan ;

Russell, Christopher T. ;

Runov, Andrei ;

Zhou, Xu-Zhi ;

Kepko, Larry .

SCIENCE, 2008, 321 (5891) :931-935

[3] On the propagation of bubbles in the geomagnetic tail [J].

Birn, J ;

Raeder, J ;

Wang, YL ;

Wolf, RA ;

Hesse, M .

ANNALES GEOPHYSICAE, 2004, 22 (05) :1773-1786

[4] Role of entropy in magnetotail dynamics [J].

Birn, J. ;

Hesse, M. ;

Schindler, K. ;

Zaharia, S. .

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2009, 114

[5] Kinetic ballooning instability for substorm onset and current disruption observed by AMPTE/CCE [J].

Cheng, CZ ;

Lui, ATY .

GEOPHYSICAL RESEARCH LETTERS, 1998, 25 (21) :4091-4094

[6] CURRENT DISRUPTIONS IN THE NEAR-EARTH NEUTRAL SHEET REGION [J].

LIU, ATY ;

LOPEZ, RE ;

ANDERSON, BJ ;

TAKAHASHI, K ;

ZANETTI, LJ ;

MCENTIRE, RW ;

POTEMRA, TA ;

KLUMPAR, DM ;

GREENE, EM .

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 1992, 97 (A2) :1461-1480

[7] Substorm triggering by new plasma intrusion: THEMIS all-sky imager observations [J].

Nishimura, Y. ;

Lyons, L. ;

Zou, S. ;

Angelopoulos, V. ;

Mende, S. .

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2010, 115

[8] A kinetic ballooning/interchange instability in the magnetotail [J].

Pritchett, P. L. ;

Coroniti, F. V. .

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2010, 115

[9] THEMIS observations of an earthward-propagating dipolarization front [J].

Runov, A. ;

Angelopoulos, V. ;

Sitnov, M. I. ;

Sergeev, V. A. ;

Bonnell, J. ;

McFadden, J. P. ;

Larson, D. ;

Glassmeier, K. -H. ;

Auster, U. .

GEOPHYSICAL RESEARCH LETTERS, 2009, 36

[10] Spatial profile of magnetic field in the near-Earth plasma sheet prior to dipolarization by THEMIS: Feature of minimum B [J].

Saito, M. H. ;

Hau, L. -N. ;

Hung, C. -C. ;

Lai, Y. -T. ;

Chou, Y. -C. .

GEOPHYSICAL RESEARCH LETTERS, 2010, 37

← 1 2 →