Computer simulation of gradient drift instability processes in operation Avefria

Journal Article · Thu May 01 04:00:00 EDT 1980 · J. Geophys. Res.; (United States)

DOI:https://doi.org/10.1029/JA085iA05p02143· OSTI ID:5273565

McDonald, B E; Keskinen, M J; Ossakow, S L; Zalesak, S T

We have solved numerically equations of motion for the evolution of a one-level two-dimensional F region ionospheric plasma cloud with five different ratios of cloud-to-background integrated Pedersen conductivity. The simulations show that (1) physically small clouds striate because of the gradient drift instability more rapidly than large clouds simulated previously and (2) there exists a minimum striation onset time as a function of the Pedersen conductivity ratio. Observation 1 is in agreement with the rapid striation development exhibited by the physically small Avefria barium clouds releases, relative to the large Secede or Stress type releases.

• Research Organization: Geophysical and Plasma Dynamics Branch, Plasma Physics Division, Naval Research Laboratory, Washington, D.C. 20375
• OSTI ID: 5273565
• Journal Information: J. Geophys. Res.; (United States), Journal Name: J. Geophys. Res.; (United States) Vol. 85:A5; ISSN JGREA
• Country of Publication: United States
• Language: English

Related Subjects

640201* -- Atmospheric Physics-- Auroral
Ionospheric
& Magetospheric Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALKALINE EARTH METALS
BARIUM
COMPUTERIZED SIMULATION
DRIFT INSTABILITY
EARTH ATMOSPHERE
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
F REGION
INSTABILITY
IONOSPHERE
METALS
NUMERICAL SOLUTION
PHYSICAL PROPERTIES
PLANETARY IONOSPHERES
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
SIMULATION
STRATIFICATION
TWO-DIMENSIONAL CALCULATIONS