The internal waves described in this chapter are in lakes that are not affected by the Coriolis force due to the Earth's rotation: for example, small lakes in the arctic, mid-sized lake (i.e., diameter > ~ 5 km) in the mid latitudes, and large lakes near the equator. These lakes have a Burger number >1. As we shall see later, the wave modes that are supported in such lakes depend upon the nature of the water column stratification.
We limit the analysis to several characteristic types of stratification that are commonly observed to occur. The simplest case is that of a homogenous lake of length L and depth H, as may be typical for a shallow system or one that has recently experienced
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