Discrete auroral arc, electrostatic shock and suprathermal electrons powered by dispersive, anomalously resistive field line resonance

被引：87

作者：

Lotko, W ^{[1
]}

Streltsov, AV

Carlson, CW

机构：

[1] Dartmouth Coll, Thayer Sch Engn, Hanover, NH 03755 USA

[2] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 1998年 / 25卷 / 24期

关键词：

D O I：

10.1029/1998GL900200

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Particle and field data from a 4100-km-altitude satellite pass through a 1.3-mHz field line resonance, identified by ground-based optical, magnetic and radar signatures, are compared with results from a two-fluid MHD-gyrokinetic simulation, including dispersively and resistively sustained parallel electric fields. It is shown that the resonance powers spatially adjacent up- and down-going suprathermal-electron fluxes, a 10-km-scale auroral are and an imbedded electrostatic shock. Alfven wave dispersion and anomalous plasma resistivity are key elements in the interpretation of the event.

引用

页码：4449 / 4452

页数：4

共 19 条

[1] A STATISTICAL STUDY OF PC-3-5 PULSATIONS OBSERVED BY THE AMPTE CCE MAGNETIC-FIELDS EXPERIMENT .1. OCCURRENCE DISTRIBUTIONS [J].