Shoaling of Nonlinear Internal Waves

Progressive nonlinear internal waves travelling along the thermocline will break when they shoal upon the sloping lake bottom (Figure 12). Wave breaking irreversibly converts wave energy to mixing and dissipation, thus contributing to localized intense turbulence in the TBBL. The internal breaking process is similar to surface wave breaking at a beach and may be interpreted in the same manner using an internal form of the Iribarren number form of the Iribarren number X, which is the ratio of the boundary slope(s) to the offshore wave slope (a/1)

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