Accession Number:

ADA285229

Title:

Metallic Ions and Atoms in the Upper Atmosphere

Descriptive Note:

Final rept. 1 Jan 1992-31 Dec 1993

Corporate Author:

BOSTON UNIV MA CENTER FOR SPACE PHYSICS

Personal Author(s):

Report Date:

1994-02-28

Pagination or Media Count:

10.0

Abstract:

The main focus of research under AFOSR Grant F49620-920-J-0092 is to investigate the global and local transport of metallic ions in the upper atmosphere, in particular the layering of ionization, through use of comprehensive numerical models which account for realistic meteoric sources, chemical conversions and sinks, and transport by molecular and eddy diffusion, winds and electric fields. The ultimate goal is to better understand the mechanisms producing ionization layers, and ultimately the seasonal, latitudinal, local time, and temporal variations in the occurrences of ionization layers. Plasma layering can affect HF communications by introducing new reflection paths thus complicating the propagating modes, and presumably in extreme cases by producing blanketing effects. In addition, plasma irregularities may also accompany the sharp gradients characterizing the plasma layers.

Subject Categories:

  • Atmospheric Physics
  • Physical Chemistry
  • Plasma Physics and Magnetohydrodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE