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composed of sand, coastal erosion creates little problem for the beach because it uses this sand to Chapter 9 Beach Erosion and Loss 3 sustain the environment. After all, sand is the lifeblood of beaches. However, migrating upward and landward through space and time does create a huge problem for buildings and roads built too close to the shoreline. And therein lies the rub â protecting the land with a seawall will lead to beach loss.
beach position is known as shoreline retreat, but typically it is described as beach erosion. It requires that a broad swath of the coastal zone be free of development so that the beach and community infrastructure do not collide. Beach erosion is a term used to describe the actual loss of beach, as occurs temporarily on some of Hawaiâiâs beaches in the high wave months, and is often seen permanently in front of seawalls where the coast has been chronically retreating. During beach erosion, beaches