Numerical investigation of the influence of various factors on the propagation and transformation of solitary waves in the sea |
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Authors: | V F Ivanov |
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Institution: | (1) Institute for Marine and Atmospheric Research, Utrecht University, Princetonplein 5, 3584 CC Utrecht, The Netherlands;(2) Dpt. de F?sica Aplicada, Universitat Polit?cnica de Catalunya, Campus Nord, Jordi Girona, 08034 Barcelona, Spain; |
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Abstract: | For various stratifications and different types of bottom patterns we study the transformations of solitary perturbations
of density appearing in the depth of the sea. In the two-dimensional case, under the assumption that the average dynamic characteristics
weakly vary in time as compared with the wave characteristics, we deduce the equations for mean currents and waves taking
into account vertical and horizontal viscosity and the diffusion of density. Numerical examples show that the stratification,
bottom topography, nonlinearity, mean currents, and dissipation strongly affect both the process of splitting of a solitary
wave into wave trains and their amplitude and length. The wave currents exhibit the oscillatory (train-like) character. It
is emphasized that, in the case of propagation of solitary perturbations of density with dissipation, it is also important
to take into account the combined influence of nonlinearity, currents, bottom topography, and stratification.
Translated by Peter V. Malyshev and Dmitry V. Malyshev |
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Keywords: | |
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