Appendix A 

 Glossary 



Bedding - the signature of a migration of a surficial bed form. 



Bed form - a morphologic feature having various systematic patterns of 

 relief and created by the conditions of flow at the dynamic interface 

 between a body of cohesionless sediment particles and a fluid. 



Climbing ripple stratification - The internal structure formed in 

 noncohesive material from migration and simultaneous upward growth of 

 long-crested ripples. 



Continental shelf- The gently sloping submerged edge of a continent, 

 extending from the surf zone seaward to a depth of about 130 m, or the 

 edge of the continental slope. The continental shelf is composed of two 

 distinct zones, the inner and outer continental shelf. The shelf is 

 characterized by an average slope of 0.1 deg. 



Continental shelf break - The seaward edge of the continental shelf 

 where the bottom begins to descend at a greater angle as part of the 

 continental slope. Average depth of the shelf break is 130 m. 



Continental slope - The submerged edge of a continent extending 

 seaward of the continental shelf which is characterized by slopes of 3-6 

 deg. 



Cross-bedding - A single layer, or a single sedimentation unit, 

 consisting of laminae that are inclined in a direction similar to the 

 principal surface of sedimentation. This sedimentation unit is separated 

 from adjacent layers by a surface of erosion, nondeposition, or abrupt 

 changes in character. 



Depth of closure - The point on the equilibrium profile beyond which 

 there is no significant net offshore transport of sand even during storm 

 conditions. 



Appendix A Glossary 



A1 



