Eustatic and Isostatic Sea Level
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LiviB
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What are eustatic change and isostatic change, and how can you tell the difference between if the sea level has risen or the land has moved ?
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(Original post by LiviB)
What are eustatic change and isostatic change, and how can you tell the difference between if the sea level has risen or the land has moved ?
What are eustatic change and isostatic change, and how can you tell the difference between if the sea level has risen or the land has moved ?
Isostatic sea level change occurs on a local scale, caused by vertical movement of land relative to the sea. Isostatic sea level change is most often caused by loading of the crust with sediment or ice - as sediment or ice accumulates on top of the crust, the crust subsides and relative sea levels increase. When the sediment is eroded or the ice melts, the pressure is reduced and the crust rises relative to the sea level.
Rising and falling sea levels also create submergent landforms (e.g. rias and fjords), and emergent landforms (e.g. raised beaches) respectively

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