Nonlinear electric field structures in the innermagnetosphere

被引：83

作者：

Malaspina, D. M. ^{[1
]}

Andersson, L. ^{[1
]}

Ergun, R. E. ^{[1
]}

Wygant, J. R. ^{[2
]}

Bonnell, J. W. ^{[3
]}

Kletzing, C. ^{[4
]}

Reeves, G. D. ^{[5
]}

Skoug, R. M. ^{[5
]}

Larsen, B. A. ^{[5
]}

机构：

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

[2] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA

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

[4] Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA

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

来源：

GEOPHYSICAL RESEARCH LETTERS | 2014年 / 41卷 / 16期

关键词：

Dipolarizations; Nonlinear Electric Fields; Inner Magnetosphere; Radiation Belts; DOUBLE-LAYERS; POLAR OBSERVATIONS; SOLITARY WAVES; SPACE PLASMA; ACCELERATION; MAGNETOTAIL; THEMIS;

D O I：

10.1002/2014GL061109

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Van Allen Probes observations are presented which demonstrate the presence of nonlinear electric field structures in the inner terrestrial magnetosphere (<6 R-E). A range of structures are observed, including phase space holes and double layers. These structures are observed over several Earth radii in radial distance and over a wide range of magnetic local times. They are observed in the dusk, midnight, and dawn sectors, with the highest concentration premidnight. Some nonlinear electric field structures are observed to coincide with dipolarizations of the magnetic field and increases in electron energy flux for energies between 1 keV and 30 keV. Nonlinear electric field structures possess isolated impulsive electric fields, often with a significant component parallel to the ambient magnetic field, providing a mechanism for nonadiabatic wave-particle interactions in the inner magnetosphere.

引用

页码：5693 / 5701

页数：9