A wide beach existed at the start of the study. Modest erosion in 

 September was followed by terrace recession in November and December. 

 Most of the beach was removed during storms in early November 1970. Accre- 

 tion and erosion occurred during the 2 months following ice breakup in the 

 spring. The same pattern was then repeated through July. 



Accretion in January of the second year was followed by some erosion. 

 Terrace erosion preceded ice formation. Erosion dominated during the 

 spring although some increase in beach width occurred in June 1972. 



Accretion continued in August 1972, but there was much erosion in the 

 fall (20 feet of terrace recession) . After the early shore-ice breakup 

 there was no beach and 1 foot of water at the base of the till bluff. This 

 situation prevailed until a small beach developed in late spring of 1973. 



2. Discussion of Profile Changes . 



Although it is difficult to generalize the beach profile changes, there 

 are several factors which are apparent when looking at the entire spectrum 

 of time and location. As discussed in previous reports (Davis, 1972; Davis, 

 Fingleton, and Pritchett, 1975), there is a general absence of recognizable 

 patterns of erosion and accretion (Tables 5 and 6) . This was particularly 

 true during the first 2 years of study, but during the third year, erosion 

 prevailed nearly everywhere (Table 5; Fig. 6). In comparing data from 

 Table 5 and Figure 6 with data on Table 6, note that Table 5 and Figure 6 

 report bluff or terrace recession only, but Table 6 includes added infor- 

 mation on beach erosion or accretion. Reevaluation and rounding off of 

 data that appear in Table 4 of Davis, Fingleton, and Pritchett (1975) 

 result in slight changes of that data on Table 5 of this report, totaling 

 7 feet. 



The ease with which the beach can change is shown by the large temporal 

 and spatial variations in beach conditions. During the 4-week sampling 

 intervals there was time for a wide range of coastal conditions so that 

 only net changes were recorded during the site visits. These net changes 

 may reflect gradual processes or short-term and intense storm activity. 

 In some situations there was intervening storm activity which caused ter- 

 race or bluff erosion, even though the net beach change during the 4-week 

 survey period was one of accretion. This is an indication of the rapid 

 changes that can take place on beaches. 



A compilation of beach changes at each location over the 3 study years 

 demonstrates the aforementioned variability (Table 5). Only 4 of 38 sur- 

 veys showed spatial uniformity in changes over a 4-week interval. (There 

 were 39 surveys in all but the first survey does not provide changes from 

 a previous condition.) In one of these (Table 5, survey No. 13, July 1971), 

 there were only 7 of the 17 sites that showed a change, and all exhibited 

 beach erosion. Survey numbers 3 and 29 were during the same month of the 

 year (September), and showed beach erosion at sites 12 and 17, respectively. 

 The fourth case was survey number 32, in December 1972, when only 10 sites 

 were not bound by shore ice, and all but 2 of the 10 showed erosion. Thus, 



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