7_Waves_2 - Waves II Waves Part II 1. Wind-Generated Waves...

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1 Waves II Waves Part II 1. Wind-Generated Waves Local and Distant Generated 2. Wave Measurement Methods 3. Other Types of Waves Tsunamis Seiches Internal waves Wave Height of Wind-Generated Waves is a Function of: 1. Wind Speed 2. Duration of Wind Event 3. Fetch the distance over which wind can blow without obstruction
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2 The Importance of Fetch Northerly/Southerly Winds Produce a Long Fetch Over Finger Lakes (A), and Easterly/Westerly Winds Produce a Short Fetch (B) A B Fetch in the Open Ocean is Limited by the Size of the Storm System (95% of Energy Contained Within ±45 o of Storm Direction) Lateral Spreading of Wave Energy from a Storm Source
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3 Wind Waves and Swell Waves 1. Wind Waves Generated locally and thus wave height is directly related to local wind speed, local fetch and local wind duration 2. Swell Waves Generated at a distant location and propagated into the local region of interest. No relationship
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7_Waves_2 - Waves II Waves Part II 1. Wind-Generated Waves...

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