Abstract
Solitary waves—large individual waves that can travel long distances holding their shape, unlike normal waves that would tend to flatten out—occur in oceans and in lakes, both on the surface and as internal waves below the surface. In lakes, these waves can affect circulation and mixing and influence aquatic ecosystems, but many studies of the properties and effects of internal solitary waves in lakes are based on limited observations. From observations recorded over 6 years in Lake Constance, in Germany,Preusse et al. studied seasonal changes in the properties of internal solitary waves. Their study, which included 219 wave trains with a range of numbers of waves per train, amplitude, propagation depth, and other properties, shows that internal solitary waves are a regular occurrence. They found that a substantial number of the solitary waves were strongly nonlinear and that solitary wave properties varied with the stratification of the lake, which changes with season. (Journal of Geophysical Research‐Oceans, doi:10.1029/2011JC007403, 2012)
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