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LEGEND 

 HURRICANES 

 NORTHEASTERS 



102 10 3 



RECURRENCE INTERVAL, YRS 



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COMBINED HURR-NSTR DESIGN CURVE 

 PROFILE NO. 286 



Figure 10. Combined hurricane -northeaster recession-recurrence 

 interval design curve for the study area 



CONCLUSIONS 



A systematic means of predicting time -dependent erosion of dunes as a 

 function of storm events of known frequency of occurrence was developed by 

 combining the existing technologies of stochastic stage-frequency analysis and 

 a single event, one-dimensional dune erosion model. The technique employed 

 produces dune recession-frequency of occurrence relationships which can be 

 effectively used for estimating the design life of structures protected by the 

 presence of a berm and dune. 



ACKNOWLEDGEMENTS 



The author wishes to thank H. L. Butler and L. W. Chou for their contribu- 

 tions to this study. The results contained in this paper represent a portion 

 of a dune erosion investigation which was funded by the U.S. Army Engineer 

 District, New York. Permission to publish this material was granted by the 

 Office, Chief of Engineers, U.S. Army Corps of Engineers. 



143 



