tions , and computer programs for both explicit and implicit numerical solution 

 schemes . 



8. Hanson (1987) : This report, a doctoral dissertation, documents the 

 first version of the GENESIS modeling system. The concepts of longshore 

 calculation domains and wave energy windows are introduced, and major previous 

 and newly developed algorithms comprising GENESIS are described, including 

 multiple diffraction, sand bypassing and permeability of groins, and represen- 

 tation of beach fill. Results of numerous model sensitivity tests are 

 discussed and several case studies presented. 



9. Kraus et al . (1988) : This report describes a circa 1985 application 

 of GENESIS to the north New Jersey shore. The 8-mile-long reach contained 93 

 groins and involved development of strategies to deal with long simulation 

 times and long coastal reaches, as well as numerous refinements to GENESIS to 

 overcome many practical problems encountered with input of wave information 

 from an external wave transformation model and reliability of the internal 

 wave calculation under complex shoreline configurations. An arbitrary 

 threshold for longshore transport was set at a wave height of 20 cm to reduce 

 calculation time. The practical strategy of keying nearshore wave refraction 

 calculation results to a limited number of wave period-angle bands for unit 

 deepwater wave height was developed in this study. 



10. Chu et al . (1987) : This report describes the evaluation of several 

 shore-protection alternatives for a beach with a large tidal range and 

 composite grain size material. 



11. Hanson and Larson (1987) : This article gives comparisons of 

 analytical solutions as described in Larson, Hanson, and Kraus (1987) and 

 numerical predictions of GENESIS. 



12. Kraus. Hanson, and Larson (1988) : This article describes develop- 

 ment of an objective empirical criterion for predicting a threshold of 

 effective longshore sand transport rate. Comparisons of calculated shoreline 

 change with and without the threshold are made and results interpreted through 

 the general characteristics of the input wave time series. 



13. Hanson (1989) : This article presents an overview of the first 

 version of GENESIS, succinctly describing numerous technical and practical 



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