Beach Evolution
The shoreline is where the land meets the sea and it is continually changing. Over the long term, the water is eroding the land. Beaches represent a special case, in that they exist where sand accumulated from the same processes that strip away rocky and sedmientary material. I.e., they can grow as well as erode. River deltas are another exception, in that silt that erodes up river can accrete at the river's outlet and extend ocean shorelines. Catastrophic events such as tsunamis, hurricanes and storm surges accelerate beach erosion, potentially carrying away the entire sand load. Human activities can be as catastrophic as hurricanes, albeit usually over a longer time interval.
Read more about Beach Evolution: Relative Sea Level Changes
Famous quotes containing the words beach and/or evolution:
“There I was dragging the ocean, that knock-out,
in and out by its bottle-green neck, letting it chew
the rocks, letting it haul beach glass and furniture sticks
in and out.”
—Anne Sexton (1928–1974)
“The evolution of a highly destined society must be moral; it must run in the grooves of the celestial wheels.”
—Ralph Waldo Emerson (1803–1882)