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Types of Sea Level Changes

Sea level change is relative change in level of the sea surface that rise or fall with respect to the land surface.
There are two types-
A.)Sea Level Rise.
B.)Sea Level Fall.
A.)Sea Level Rise:
Sea level rising while the land surface subsides, remains stationary or rises at a slower rate.
 Characteristics:
  1. Due to the rise of sea water, the various rivers are flooded.
  2. As a result of rise in sea level, almost 33 % of the world’s crop lands could be submerged.
  3. As a result of rise in sea level, the mouths of drainage basins will undergo submergence.
  4. As a result of rise in sea level, beaches, coastal dune & bars will be destroys.
B.)Sea Level Fall:
Sea level falling while land surface rises, remains stationary or subsides at slow rate.
Characteristics:
  1. A fall in sea level may cause changes in the base levels of rivers.
  2. As a result of fall in sea level, deposited of substances produced by various corrosive processes.
  3. Sea level falling greatly regulates the spread of coral reefs.
  4. Water fall is one of the reasons for river’s regeneration.

Fig: Sea Level Change

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