Sea level changes refer to the rise and fall of the sea level in relation to the land along the coastal areas. Alternatively, sea level changes can be defined as the vertical movement of land relative to the sea along the coastal regions.
When sea level changes occur worldwide is called eustatic or major change and when it occurs on a minor or local scale is called isostatic change.
TYPES OF SEA LEVEL CHANGES
Sea level changes are either positive or negative.
Positive eustatism/ change occurs when the sea level
rises in relation to the land and produces submerged coasts and their related landforms.
Negative eustatism/ change occurs when the sea level falls in relation to the land and produces emerged coasts and their related landforms.