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The disintegration of a sinusoidal internal tide in the MCCf model is arrested after some energy is shed as a packet of shorter nonlinear (solitarylike) waves. The remaining long wave is close to a nonlinear inertiagravity (red dashed line). The blue dashed line is solution from the hydrostatic shallow water equations.
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The radiation decay of a solitary wave with rotation leads to the development of a nearly isolated wave packet.
 The disintegration (or not) of the lowmode internal tide
The disintegration of a lowmode internal tide into highfrequency solitarylike waves is reexamined in the fullynonlinear regime. As with weakly nonlinear models, the disintegration is inhibited by rotation. Using a twolayer fullynonlinear longwave model with rotation, it is shown that underlying periodic fullynonlinear hydrostatic waves act as attractors that prevent the complete disintegration of a general (e.g. sinusoidal) initial tide. In the hydrostatic limit the initial tide will steepen to breaking, dissipate energy and eventually settle onto a nonlinear periodic solution. When weak nonhydrostatic dispersion is included, excess energy in the initial tide is shed as a packet of highfrequency waves; however, the underlying long tidal wave is the same. While qualitatively similar to results from weakly nonlinear theory, there are substantial quantitative differences related to the properties of both the underlying low and highfrequency waves.
In a related study, the radiation decay of fully nonlinear, weakly nonhydrostatic internal solitary waves with rotation has been explored. The solitary wave will decay by a radiation damping process. However, the radiated inertiagravity wave will steepen and eventually a nearly isolated wave packet will emerge.

