Accession Number:

ADA128253

Title:

Short Wavelength Stabilization of the Gradient Drift Instability due to Velocity Shear.

Descriptive Note:

Memorandum rept.,

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s):

Report Date:

1983-05-04

Pagination or Media Count:

30.0

Abstract:

A nonlocal analysis of the gradient drift instability is presented. The new effect included in this theory is the allowance for an inhomogeneous electric field which produces a sheared drift velocity. It is found that velocity shear can stabilize the short wavelength modes of the instability, and preferentially excite a longer wavelength mode than would be expected based upon local theory. This result may explain the observations of dominant, long wavelength irregularities in the equatorial electrojet and be relevant to irregularities in the auroral ionosphere. Author

Subject Categories:

  • Atmospheric Physics
  • Numerical Mathematics
  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE