Simulation of high latitude F-layer instabilities in the presence of magnetosphere-ionosphere coupling. Memorandum report

Technical Report · Mon Jul 08 04:00:00 EDT 1985

OSTI ID:5009627

Mitchell, H G; Fedder, J A; Keskinen, M J; Zalesak, S T

A magnetic-field-line-integrated model of plasma interchange instabilities is developed for the high-latitude ionosphere including magnetospheric coupling effects. It is shown that the primary magnetosphere-ionosphere coupling effect is to incorporate the inertia of the magnetospheric plasma in the analysis. As a specific example, simulation of the E x B instability in the inertial regime is presented, i.e., nu sub i << omega where nu sub i is the ion-neutral collision frequency and omega is the wave frequency. It is found that the inertial E x B instability develops in a fundamentally different manner than in the collisional case nu sub i >> omega. Results show that striations produced in the inertial regime are spread and retarded by ion inertial effects, and result in more isotropic irregularities than those seen in the collisional case.

• Research Organization: Naval Research Lab., Washington, DC (USA)
• OSTI ID: 5009627
• Report Number(s): AD-A-157475/5/XAB
• Country of Publication: United States
• Language: English

Related Subjects

640201* -- Atmospheric Physics-- Auroral
Ionospheric
&amp; Magetospheric Phenomena
640203 -- Atmospheric Physics-- Magnetospheric Phenomena-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CHARGED PARTICLES
EARTH ATMOSPHERE
EARTH MAGNETOSPHERE
F REGION
GEOGRAPHICAL VARIATIONS
INSTABILITY
IONOSPHERE
IONS
LATITUDE EFFECT
PLANETARY IONOSPHERES
PLASMA INSTABILITY
SIMULATION
STRIATIONS
VARIATIONS