Figure 15. Stability fields for bed forms produced in very fine sand 

 in collinear combined-flow water tunnel (from Arnott 

 and Southard (1990)) 54 



Figure 16. Cross-shore sequence of structures commonly found off 



the coast of southern Oregon (after Clifton (1976)) .... 55 



Figure 17. Probable sequence of events producing hummocky cross- 

 stratification on the inner shelf (after Duke, Arnott, and 

 Cheel (1991)) 63 



List of Tables 



Table 1. Variation in Depths of Dj and Nourishment Foot for 

 Different Wave Conditions and Storm Return Periods 

 (from Stive et al. (1992)) 14 



Table 2. Relationships Between Depth of Rippling and a Variety 

 of Surface Wave Conditions (after Komar, Neudeck, 

 and Kulm (1972)) 34 



Table 3. Summary of Environmental Conditions at Duck, North 

 Carolina, for Different Events (after Wright et al. 

 (1991)) 35 



Table 4. Hierarchy of Bed Form Formation by Increasing Energy 



(after Harms et al. (1975)) 46 



