Wind Wave

In fluid dynamics, Wind Waves or, more precisely, wind-generated waves are surface waves that occur on the free surface of oceans, seas, lakes, rivers, and canals or even on small puddles and ponds. They usually result from the wind blowing over a vast enough stretch of fluid surface. Some Waves in the oceans can travel thousands of miles before reaching land. Wind Waves range in size from small ripples to huge rogue waves. When directly being generated and affected by the local winds, a Wind Wave system is called a wind sea. After the wind ceases to blow, Wind Waves are called swell. Or, more generally, a swell consists of wind generated waves that are not — or hardly — affected by the local wind at the same moment. They have been generated elsewhere, or some time ago. Wind Waves in the ocean are called ocean surface waves.

Tsunamis are a specific type of wave not caused by wind but by geological effects. In deep water, tsunamis are not visible because they are small in height and very long in wavelength. They may grow to devastating proportions at the coast due to reduced water depth.

Source: en.wikipedia.org/wiki/Wind_wave - 02.06.2010

Wave on the Beach

This especially nice wave on the beach of Crete forms a complete roll.

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