Numerical experiments on modon stability to topographic perturbations

Citation:
Carnevale, GF, Briscolini M, Purini R, Vallis GK.  1988.  Numerical experiments on modon stability to topographic perturbations. Physics of Fluids. 31:2562-2566.

Date Published:

Sep

Abstract:

A summary of a numerical study of the stability of modons to topographic perturbation is presented. Previous studies have suggested a monotonic relationship between the horizontal scale of the perturbation and the amplitude needed to destroy a modon—as the scale of the perturbation increases the strength needed for destruction decreases. The results presented here show that this relationship does not hold for scales larger than the modon radius. For large‐scale perturbations, the strength needed for destruction again increases. The modon is most stable to perturbations of horizontal scale either much larger or much smaller than the modon radius. Stability graphs are presented for three types of perturbations; ridges, hills, and irregular terrain.

Notes:

n/a

Website

DOI:

10.1063/1.866533