Abstract
The resonant generation of a second-mode internal solitary wave, resulting from a ship internal waves system damping in a thermocline, is studied experimentally. The source of the stationary internal waves was provided by an oblong ellipsoid of revolution towed horizontally and uniformly at the depth of the thermocline center. The ranges of the Reynolds and Froude numbers were 500⩽Re=Ul/v⩽ 15000 and 0.3⩽Fi=U/NmaxD⩽1.0, respectively. When the body's speed and the linear long-wave second-mode phase speed were equal, an internal solitary wave of the “bulge” type was observed. The shape of the wave satisfied the Korteweg-de Vries equation. The Urcell parameter was equal to 10.2.
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