Abstract
A simple equation is derived for the nonlinear evolution of a front (a potential-vorticity discontinuity) in the rotating shallow-water equations, assuming weak along-front variations relative to the internal radius of deformation. This equation can be transformed into the modified Korteweg-de Vries equation, which is integrable and possesses exact, time-dependent solutions.
Original language | English |
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Pages (from-to) | 1089-1091 |
Number of pages | 3 |
Journal | Physics of Fluids A |
Volume | 5 |
Issue number | 5 |
Publication status | Published - 1 Dec 1992 |