Finite-depth capillary-gravity dromions.

It is known that the governing equations for the evolution of the envelope of weakly nonlinear capillary-gravity wave packets, the so-called Davey-Stewartson equation, admit dromion solutions in the limit of shallow water and strong surface tension, i.e., when kh≪1 and the Bond number (Bo) ≡T/ρgh^{2}>1/3 (where T is the surface tension coefficient and h the water depth). Here we show that capillary-gravity dromions exist beyond this limit for a broad range of finite water depths, i.e., for kh ≥ O(1), as well as for subcritical Bond numbers, i.e., for Bo < 1/3.