Understanding beaches and coastline almost all of us know the beach but often also do not understand what the definition of the beach, therefore from our understanding many mistakes, for example by making beaches with coastal equations and different beaches.
Coastal area is a meeting between sea water and land that eventually happens that called tide and low tide even when it comes storm.
The beach is a geographical form consisting of sand, and is found in the coastal areas of the sea. The coastal area becomes the boundary between land and sea waters. The length of this coastline is measured around the entire coast which is a territorial region of a country.
The shape of the beach may change over time. This shape change is caused by:
. Exogenous energy influences such as waves, ocean currents, coastal erosion due to tides.
. The existence of the influence of endogenous energy such as the increase or decrease of the earth's layer on the coast,
. The existence of human activities such as draining marsh, making ports and dredging the river mouth.
