emergent landforms

coastal landforms and climate change

eustatic change - change in global volume of water. can be caused by:
- varitations in earth's orbit
- variations in amount of energy produced by the sun
- changes in composition of the atmosphere - major volcanic erruptions, human polluntants
- variations in the earth's tilt on its axis
isostatic change - changes in land level (not considered here)
emergent landforms - landforms shaped by wave processes during times of high sea level, and are exposed when sea level drops
emergent landforms appear when sea level falls

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raised beaches - areas of former shore platforms that are at a higher level than the present sea level
abandoned cliffs - found behind beaches behind emergent coastlines. sometimes have cave-cut notches, caves, arches and stacks

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after emergence, landforms are no longer affected by wave processes because they are significantly higher than the water level
continue to be affected by weathering and mass movement
predicted that chemical weathering will become more damaging due to current climate change problems
if sea levels rise, landforms will be suject to wave processes

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