APPLICATION OF WAVE PERSISTENCE GRAPHICS 



The wave persistence graphics presented in this report contain a 

 wealth of information when applied to specific problems involving dura- 

 tion of particular wave heights. The graphs are intended for application 

 to any particular operation or problem, where the limits of the operation 

 or problem determine whether the waves are favorable or unfavorable. 

 Several examples of the application of wave persistence are: 



1. forecasting durations of storm waves, which can result in economic 

 savings to maritime concerns when known regions of adverse waves 

 of long durations are avoided in ship routing; 



2. estimating durations of particular wave height categories which 

 are hazardous to refueling operations or cargo transfer; 



3. estimating durations of regional adverse wave conditions which 

 would hinder or restrict survey operations or salvage operations; 



it. estimating durations of particular wave heights pertinent to 

 construction of offshore platforms for oil drilling or 

 communications; 



5. gaining nearshore information on duration of adverse waves and 

 breakers pertinent to the constniction of piers, breakwaters, 

 dikes, and other structures along coastlines or harbors; 



6. predicting high water levels and durations from storm surges 

 affecting unprotected coastal installations; 



7. predicting extent of beach erosion and shoreline processes by 

 relating sustained wave action with beach profile characteristics. 



Many more applications of wave persistence are possible, depending on 

 the special requirements of the user. Whatever the interest, it is hoped 

 that this initial investigation of wave persistence will encourage further 

 research on a subject of great concern to all engaged in martirae operations 

 and to all affected by wave activity. 



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