Table 2. Summary of mathematical models for shoreline evolution. --continued 







)>k>d 



i jc.i 



loh 



Effec 



of 





by 





Diffra 



tion 



re 



ract 



on 



lone-lire theory] 



Main Conclu 



First significBnt milestone of int 

 duction of Biathematical modeli-g t 

 the study of shoreline evolution 



Ho tio ^o '*o "^^ forms of solution: 



One with concave shoreline (snail angle) 

 One with convex shoreline (large angle) 



No No No No No Same as Larras (1957) 



Two forms of solutions as in 1960 

 applied to a niniher of deltas, 

 idealized cases 



The itost significant contrib 

 1956 demonstrating the influ 

 beach slope 



of diffraction changing i 



Experimental verification for mon 

 diffracting waves, i.e., updrift. 

 fairly satisfactoTy 



Good experimental verific 



Combined effect. Yes No No Fit with Combined effect of refraction 6 dif- 



refraction- prototype fraction in protected areas; affecte. 



diffraction cases also to geological time evolution 



Yes, but unsuccess- Yes No No No No Qualitative fit only, unsuccessful; ' 



fully (numerical large distances between data point. 



instability) Complexity of combined refraction- 

 diffraction effect. 



Ho No No No No No Numerical application of Pelnard- 



Empirical development 



(in principle) 



