Types of Coasts and Beaches
The damage by storms, surges, and tsunamis depends in part of the type of coast. There are many different types, and many different ways to classify coasts.
The geological setting is important. The Office of Naval Research web page on Coasts divides coasts into two categories:
- Primary Coasts, which were created by non-marine processes. The processes include erosion, deposition, and tectonic activity. River deltas are an important example
- Secondary Coasts, which were formed by marine action. The processes include deposition of sand by waves and currents, and growth of reefs by corals. Barrier islands are an important example.