APPENDIX K: DATA SUMMARY FOR THE STORM OF 14 OCTOBER 1977 



1. The storm of 14 October 1977, although short in duration, caused 

 significant erosion along the east coast. Though this storm was a typical 

 "northeaster" moving northward close along the coast, it was complicated by 

 the development and passage of Hurricane Evelyn. Figure Kl illustrates the 

 tracks of the two storms. 



2. This event was monitored by a two-man crew at Long Beach Island and 

 Ludlam Beach. Hindcasted waves for this storm were not available; however, 

 visual observations taken during the storm recorded breaking wave heights of 

 1.8 m with periods of 6 to 7.5 sec at both localities. Peak tide measured at 

 the Atlantic City gage was 1.8 m above msl with an associated surge of 

 approximately 0.9 m. Survey crews were in New Jersey when the storm 

 developed, and profiling was completed immediately before and after the 

 storm. Even so, there is some evidence of recovery on the Long Beach profile 

 lines near the msl intercept. 



3. This storm produced significant but varied changes on the two 

 beaches. All profile lines eroded with most erosion occurring between the 1- 

 and 2-m contours at Ludlam Beach and between the 1.5- and 2 . 5-m contours at 

 Long Beach Island. Further evidence of recovery at Long Beach Island is the 



5 m of shoreline accretion. Long Beach Island experienced consistent erosion 

 with a median volume change of -26.2 m^/m and a hinge range of only 

 11.8 m^/m. The dunes on most of the lines also eroded. 



4. At Ludlam Beach, the storm caused a -4.7 m shoreline movement and a 

 slight steepening of the foreshore. The median change was -14.8 m^/m with a 

 hinge range of 13.4 m^/ra. The changes were lowest within the Sea Isle City 

 groin field (profile lines 11 to 16) and highest between profile lines 4 and 

 10. The storm caused the dune both north and south of the groin field to 

 erode and to breach between profile lines 7 and 8. 



5. Tables and figures are arranged according to predicted and actual 

 water levels, hindcasted wave data, profile comparisons, shoreline and slope 

 changes, unit volume changes, and distribution of unit volume changes. 



Kl 



