A factor in coastal erosion is the sea level rise. It cause erosion and it takes
from centuries to milleniums. It is relative to the rise and fall of the sea. As the sea
level rises it covers more sediments and as it lowers some of the sediments that it
covers is taken back out with the tide. A storm surge causes erosion. It takes from a
few hours to a few days. A major effect of a storm surge is a large wave which will
erode a coastline quickly. The larger the wave the more sediments it will carry out.
Normal waves will take longer to erode a shoreline but eventually be as effective as a
Along shore currents will not erode a beach away but will change the shape
of one. Within a time period of a few hours to a millenium the updrift or downdrift
will carry the sand from one point to another thus fort changing the shape of the
beach. Rip currents will erode a beach within a couple of hours to a many months.
The rip currents can carry significant amounts of sediment, and during a storm can
carry even more sediments away from the shore line. Another factor of along shore
currents is a under flow which a near-bottom current that will carry the same if not
more amount of sediments than a rip current. Underflow is also increased by a
Wind is a major effect of coastal erosion. Wind can blow the sand from the
beach into the water helping to cause sandbars that are close to the shoe. It can also
blow sand away from the water causing the water to more closer inland. This can
take up to a few centuries.
Subsidence, Ttectonic causes erosion and...