OCS 1005 Chapter : Ch 10 Homework
15 Mar 2019
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Light wave activity prices a wide sand berm and an overall steep beach face a summertime beach at the expense of the longshore bar. Conversely, heave wave activity produces a narrow rocky berm and an overall flattened beach face a wintertime beach and builds prominent longshore bars. When a damn is built along one of the rivers that feed into a beach compartment, it deprives the beach of sand. Lining rivers with concrete for flood control further reduces the sediment load delivered to coastal regions. Longshore transport continues to sweep the shoreline"s sand into the submarine canyons so the beaches become narrower and experience beach starvation. Bedrock for most of florida is a resistant type of sedimentary rock called limestone. Most of the bedrock northward through new jersey, however, consists of nonresistant sedimentary rocks formed in the recent geological past. As these rocks rapidly erode, the supply sand to barrier islands and other depositional features common along the coast.
