134. Seymour (1987) summarized results from the Nearshore Sediment 

 Transport Study (NSTS) 6 -year program in which nearshore sediment transport 

 conditions were investigated. He pointed out the importance of bar formation 

 for protecting the foreshore against wave action and the resulting rapid 

 offshore movement of the bar on a beach exposed to storm waves. 



135. Takeda and Sunamura (1987) found from field studies in Japan the 

 great influence of bar formation on the subaerial response of beaches with 

 fine sand. 



136. Dally (1987) tested the possibility of generating bars by long 

 period waves (surf beat) in a small wave tank, but he found little evidence 

 for this mechanism. Instead, breaking waves in combination with undertow 

 proved to be the cause of bar formation in the studied cases, whether spilling 

 or plunging breakers prevailed. 



137. Hallermeier (1987) stressed the importance of large wave tank 

 experiments for providing valuable information of the beach response to storm 

 conditions. He compared results from a large wave tank experiment (Case 401 

 in Kraus and Larson 1988a) with a natural erosion episode at Bethany Beach, 

 Delaware, and found similar erosive geometry. 



138. Sunamura and Maruyama (1987) estimated migration speeds for 

 seaward moving bars as given by large wave tank experiments using monochro- 

 matic waves . The bars were generated by breaking waves and located somewhat 

 shoreward of the break point (Greenwood and Davidson-Arnott 1975). They 

 emphasized that spilling breakers could also form bars, although the approach 

 to equilibrium was much slower than for bars formed by plunging breakers. 



139. Kobayashi (1987) presented analytical solutions to idealized cases 

 of dune erosion simplifying the governing equations to result in the heat 

 diffusion equation (cf. Edelman 1969, 1973). 



140. Hughes and Cowell (1987) studied the behavior of reflective 

 beaches in southern Australia, in particular, changes in the foreshore step. 

 The height of the beach step was correlated to the breaking wave height and 

 the grain size where a larger wave height and a coarser grain size both 

 produced a higher step. 



141. Kriebel, Dally, and Dean (1987) performed laboratory experiments 

 using a small wave tank and beach shapes designed with the dimensionless fall 



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