Three of the seven maps of the nearshore bottom exhibit 

 undulations that are likely correlative with the longshore 

 bar and trough "rhythms" described from Japanese coastal waters 

 by Hom-ma and Sonu (1963). The maps show arcuate bar units 

 whose feet correspond to shoal areas and apices to troughs. 

 The significance of bar-trough rhythms to coastal engineering 

 is stressed, their importance to expectable ranges of cut-and- 

 fill being considerable. Maximum ranges of cut-and-fill noted 

 at points out from the MLW shoreline at Camp Pendleton for 

 months from April through October (during normal weather) are: 

 50 yards - 6 feet; 100 yards - 8 feet; 200 yards - 9 feet; and 

 300 yards - 12 feet. An increase in the range at the 50-yard 

 point, from 6 to 8 feet, is required if the March 7, 1962 storm 

 topography is considered. 



INTRODUCTION 



Engineers, contractors, business men, homeowners, and others engaged 

 in working or living by the sea have need of accurate information on the 

 expectable variation in morphology of the particular beaches with which 

 they are involved. This study presents some accurate data on the character 

 and magnitude of changes in beach morphology for a portion of the Atlantic 

 coast of the City of Virginia Beach (Figure 1). Data are presented for 

 both "average" weather changes and for those induced by the great storm 

 of 7-8 March 1962. 



The term "beach" is used in this study in the broad sense, encom- 

 passing here the general zones of backshore , beach ridge (and associated 

 dunes), foreshore, and nearshore bottom (in this study out to water depths 

 up to 25 feet below MLW). 



PREVIOUS WORK 



Among the many important studies in the general field of descriptive 

 work on beach changes are those of Shepard (1950), Inman (1953), Bruun 

 (1954a, 1954b), Inman and Rusnak (1956), and Zeigler and Tuttle (1961). 

 King Tl959) has a comprehensive review of beach changes in her recent book, 

 "Beaches and Coasts." 



Two studies have been published that mention beach changes at Virginia 

 Beach (Figure 1). The "Beach Erosion Control Study" of the U. S. Army 

 Corps of Engineers (U. S. Congress, 1953) indicated: 



