different longshore conditions. In any case, we must quantify the naturally 

 occurring variability in order to establish accuracy requirements for a dune 

 erosion model . 



34. Birkemeier, Savage, and Leffler (in preparation) present a large 

 collection of storm erosion data, 46 cases from seven different beach 

 localities and 13 different storm events (Table 1). Included in the study is 



Table 1 

 Suimary of Storm Data Used to Compute the Variability Factor 

























































Median 



Profile Changes above NGVD 



Median 











Nurter 



Sirge 



Return 





Peak Wave" 



Shorellm 



i Median 



Mean Profiles 



Range of 



Above 



Storm 









of 



Height Period Height 



Period Duration Change 



VoluiB Volura E 

 nr/m nr/m / 



iroslon/ 



Volure C 

 nrVn 



hangs 



Su-ge 



nr/m 



Date 



Beach 



Sirvey 



Dates 1 



Yoflles 



; m 



yrs 



m 



sec 



hr 



m 



kccretlon 



i 





LSI 



Fran 

 23 Oct 62 



To 



18 



1.5 



2.3 



3.5 



9.1 



32 



0.8 



-11.0 



-7.4 



11/7 



-34.1 



26.0 





3 Nov 62 



8 Nov 62 



-7.9 





ATLANT 



1 Nov 62 



9 Nov 62 



7 



1.5 



2.3 



3.6 



9.3 



34 



9.8 



-9.5 



-7.4 



5/2 



-3.7 



8.3 



-4.9 





LUDLAM 



1 Nov 62 



7 Nov 62 



19 



1.5 



2.3 



3.7 



9.3 



29 



6.0 



-5.2 



-5.5 



15/4 



-22.2 



17.8 



-0.2 



6 Nov 63 



LBI 



25 Oct 63 



15 Nov 63 



17 



1.4 



1.2 



2.4 



7.1 



27 



-3.5 



-1.3 



-5.3 



10/7 



-59.9 



12.9 



1.6 





ATLANT 



28 Oct 63 



14 Nov 63 



7 



1.4 



1.2 



2.4 



7.5 



36 



-14.0 



-25.2 



-42.9 



6/1 



-150.8 



0.5 



-8.3 





LUDLAM 



30 Oct 53 



13 Nov 63 



19 



1.4 



1.2 



2.4 



7.5 



26 



-0.7 



-4.4 



-5.1 



13/5 



-26.3 



20.0 



-0.6 



13 Jan 64 



LBI 



2? tec 63 



15 Jan 64 



18 



1.5 



1.6 



4.6 



9.9 



35 



-0.4 



-28.2 



-29.1 



17/1 



-69.2 



6.6 



-16.6 





ATLANT 



31 Dec 63 



17 Jan 64 



4 



1.5 



1.6 



3.7 



10.3 



31 



4.3 



-13.1 



-20.4 



3/1 



-55.5 



0.2 



-5.3 





LUDLAM 



7 Jan 64 



15 Jan 64 



19 



1.5 



1.6 



4.6 



10.3 



35 



-3.7 



-22.2 



-18.2 



17/2 



-43.3 



11.5 



-4.6 



16 Sep 67 



ATLANT 



15 Sep 67 



19 Sep 67 



7 



1.4 



1.6 



2.2 



- 



27 



-0.2 



-15.1 



-8.2 



5/2 



-41.7 



38.7 



0.0 





LUDLAM 



14 Sep 67 



18 Sep 67 



19 



1.4 



1.6 



2.7 



7.7 



17 



4.0 



-6.6 



-8.5 



13/6 



-61.2 



28.3 



-0.3 



13 Mar 68 



MISQ 



8 Mar 68 



14 Mar 68 



6 



0.7 



(1 



3.0 



8.0 



25 



-1.0 



-4.3 



-4.4 



6/0 



-8.0 



-1.2 



-2.9 





VEST 



6 Mar 68 



14 Mar 68 



11 



0.7 



(1 



3.0 



8.0 



22 



-2.0 



-3.8 



-4.6 



10/1 



-15.0 



2.3 



-0.8 





JONES 



11 Mar 68 



18 Mar 68 



15 



1.2 



(1 



3.0 



7.4 



26 



-1.5 



-2.9 



-3.0 



6/3 



-31.7 



23.9 



-0.6 





ATLANT 



7Mar 68 



13 Mar 68 



7 



1.1 



<1 



3.0 



7.8 



30 



-3.1 



-3.0 



-2.3 



4/3 



-18.7 



13.5 



-0.5 



12 Nov 66 



LBI 



23 Oct 68 



13 Nov 68 



18 



1.6 



8.0 



2.9 



7.7 



28 



-1.4 



-26.4 



-25.0 



15/3 



-57.0 



2.4 



-19.6 





ATLANT 



25 Oct 68 



15 Nov 68 



7 



1.6 



8.0 



2.4 



6.8 



22 



-1.8 



-19.7 



-19.4 



7/0 



-32.1 



-8.1 



-11.1 





LUDLAM 



24 Oct 68 



14 Nov 68 



19 



1.6 



8.0 



2.8 



6.8 



11 



-6.1 



-24.7 



-25.3 



19/0 



-44.4 



-1.0 



-9.3 



2 Feb 76 



MISQ 



28 Jan 70 



4 Feb 76 



7 



0.6 



<i 



3.5 



7.6 



61 



-2.9 



-7.4 



-7.6 



7/0 



-14.5 



-0.8 



-6.2 





JONES 



27 Jan 70 



6 Feb 70 



15 



1.1. 



<i 



2.6 



8.0 



23 



-1.3 



2.6 



9.2 



7/8 



-26.3 



55.4 



1.6 





ATLANT 



28 Jan 70 



4 Feb 70 



7 



Lit 



- 



2.5 



- 



20 



-6.1 



-8.6 



-6.3 



6/1 



-12.7 



10.6 



-2.4 



17 Dec 70 



NAUSET 



10 Dec 70 



18 Dec 70 



10 



1.3 



1.2 



3.3 



7.9 



32 



0.6 



-20.6 



-20.2 



9/1 



-48.1 



22.0 



-6.5 





MISQ 



9 Dec 70 



23 Dec 70 



7 



1.2 



1.2 



4.2 



9.4 



X 



-8.0 



-10.5 



-10.0 



7/0 



-20.0 



-0.1 



-14.8 





VEST 



1 Dec 70 



18 Dec 70 



11 



1.2 



1.2 



3.9 



9.3 



34 



4.3 



-15.5 



-13.0 



9/2 



-43.2 



14.8 



-11.5 





JCNES 



10 Dec 70 



20 Dec 70 



15 



1.6. 



1.2 



4.0 



9.4 



32 



-1.4 



-16.7 



-18.4 



13/2 



-48.2 



6.0 



-10.3 





LBI 



7 Dec 70 



18 Dec 70 



18 



i.et 



- 



3.5 



8.9 



39 



3.1 



-8.5 



-11.1 



15/2 



-57.1 



11.7 



-6.9 





ATLANT 



9 Dec 70 



18 Dec 70 



7 



1-5+ 



- 



3.1 



8.2 



41 



3.7 



-15.6 



-1.2 



4/3 



-27.4 



61.2 



0.4 





LUDLAM 



10 Dec 70 



18 Dec 70 



19 



i.et 



- 



2.8 



8.2 



33 



-5.1 



-5.2 



-6.5 



16/3 



-47.2 



13.3 



-16.1 



l<5Feb72 



NAUSET 



8 Feb 72 



25 Feb 72 



10 



1.9 



-15 



5.1 



10.4 



61 



4.1 



-22.8 



-23.4 



7/3 



-80.2 



15.9 



-3.1 





MISQ 



14 Feb 72 



25 Feb 72 



7 



1.5 



6.0 



5.5 



11.4 



38 



-0.3 



-5.6 



-3.5 



5/2 



-11.5 



13.6 



-11.2 





VEST 



5 Feb 72 



22 Feb 72 



11 



1.5 



6.0 



5.5 



10.9 



44 



-2.2 



-22.8 



-21.6 



11/0 



-40.0 



-1.1 



-8.3 





JONES 



6 Feb 72 



24 Feb 72 



15 



2.0 



6.0 



5.5 



10.5 



36 



0.7 



-14.1 



-10.8 



12/3 



-36.2 



27.7 



-4.6 





LBI 



15 Feb 72 



23 Feb 72 



18 



1.8 



-13 



4.3 



9.0 



52 



1.7 



-4.0 



-1.1 



12/6 



-13.9 



34.3 



-2.7 





ATLANT 



14 Feb 72 



22 Feb 72 



7 



1.8 



-13 



4.3 



9.0 



34 



-0.2 



-9.4 



-14.8 



7/0 



-45.7 



-5.2 



-1.9 





LUDLAM 



16 Feb 72 



23 Feb 72 



19 



1.8 



-13 



4.3 



9.0 



56 



1.5 



-8.4 



-7.8 



16/3 



-21.0 



5.1 



-8.5 



17-22 Mar 



NAUSET 



13 Mar 73 



27 Mar 73 



13 



1.2 



<1 



4.0 



9.4 



67 



2.6 



-5.0 



-9.9 



6/3 



-49.0 



13.6 



-9.9 



1973 



VEST 



16 Mar 73 



24 Mar 73 



11 



1.4f 



<1 



4.0 



9.4 



52 



-20.2 



-31.4 



-25.8 



10/1 



-48.9 



9.9 



-2.6 





JCNES 



12 Mar 73 



25 Mar 73 



15 



1.4 



(1 



4.1 



9.9 



42 



-11.4 



-2.5 



-3.0 



6/4 



-36.4 



57.4 



-1.7 





LBI 



14 Mar 73 



25 Mar 73 



17 



1.3 



1.0 



2.6 



8.2 



29 



-3.3 



-6.5 



-4.0 



13/4 



-30.0 



43.6 



0.0 





ATLANT 



16 Mar 73 



25 Mar 73 



7 



1.3 



1.0 



3.3 



8.5 



37 



11.2 



-3.5 



-11.1 



5/2 



-58.1 



13.0 



-5.5 



14 Oct 77 



LSI 



13 Oct 77 



15 Oct 77 



9 



1.8 



2.0 



- 



- 



- 



5.0 



-26.2 



-21.9 



9/0 



-34.6 



-7.9 



-10.3 





LUDLAM 



11 Oct 77 



16 Oct 77 



13 



1.8 



2.0 



- 



- 



- 



-4.7 



-14.8 



-16.2 



13/0 



-31.2 



-5.1 



-3.0 



19 Dec 77 



LSI 



11 Dec 77 



20 Dec n 



8 



1.4 



1.0 



3.0+r ■ 



- 



1.6 



-41.0 



-21.8 



6/0 



-34.5 



-9.8 



■4.$ 





LUDLAM 



10 Dec 77 



21 Dec 77 



13 



1.4 



1.0 



2.34 



- 



- 



-«.6 



-17.6 



-16.7 



13/0 



-26.5 



-8.9 



-2.1 



6 Feb 78 



LB! 



22 Dec 77 



9 Feb 78 



9 



1.7 



2.6 



- 



- 



- 



-1.4 



-22.3 



-15.9 



8/1 



-41.4 



27.6 



-10.5 





LUDLAM 



22 Dec 77 



8 Feb 78 



13 



1.7 



2.6 



- 



- 



" 



2.4 



-3.4 



-5.4 



9/4 



-32.1 



9.2 



-0.5 





Loca 



I1ty 





Tide 



gage used 







Note: 



a "-" Indicates unknown data. 



* - peak surge, measured above NGVD 



















NAU5T 



Nauset Beach, Cape Cod, Mass. 



Boston Harbor, 



Mass. 









** - hlndcasted wave 



heights at 9-m depth. 







MI SO 



Mlsquamlcut 8each, R.I. 



Mortal* Pt., N.Y. 









t- sitob 



data fron 



i Sandy 



Hook, N.J 









VEST 



Westhanpton Beach, N.Y. 



Mortal* Pt., N.Y. 









-ft- based 



on visual 



breaking wave height. 







JOES 



Jones Beach, N.Y. 





Sandy Hook, N.J. 









:[: - gage measurement In 10-m water depth. 







LBI 



Long Beach Island, N.J. 



Atlantic City, 



N.J. 























ATLANT 



Atlantic 



City, N.J. 





Atlantic City, 



N.J. 























LUDLAM 



Ludlan Beach, N.J. 





Atlantic City, 



N.J. 























18 



