Oceanography
...ilt lying parallel to the mainland and separated from it by a lagoon or bay. Coastal cell- The natural sector of a coastline which sand input and sand outflow are balanced. Eustatic change- a world wide change in sea level as distinct from local changes. Fjord-A deep narrow estuary in a valley originally cut by a glacier. Moraine- Hills or ridges of sediment deposited by glaciers. Tombolo-Above water bridge of sand connecting an offshore feature to the mainland. Rip current- A strong, narrow surface current that flows seaward through the surf zone and is caused byteh escape of excess water that has piled up in a longshore trough. Groin and Jetty-A short, artificial projection of durable material placed at aright angle to shore in a n attempt to slow longshore transport of sand form a beach; usually developed in repeating units. Jetty- ongshore drift- A current running parallel to shore In the surf zone, caused by the incomplete refraction of waves approaching the beach at an angle. Longshore drift- Movement of sediments parallel to shore, driven by wave energy. Barrier Island- A long, narrow, wave built lying parallel to the mainland and separated from it by a lagoon or bay. Coastal cell- The natural sector of a coastline which sand input and sand outflow are balanced. Eustatic change- a ...