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managed retreat
In the context of coastal erosion, managed retreat (also managed realignment) allows an area that was not previously exposed to flooding by the sea to become flooded by removing coastal protection. This process is usually in low-lying estuarine areas and almost always involves flooding of land that has at some point in the past been claimed from the sea.
Managed retreat is often a response to sea level rise exacerbated by local subsidence of the land surface due to isostatic rebound in the north.
==Coastal defence==
In the UK the main reason for implementation of Managed Realignment is generally to improve coastal stability, essentially replacing artificial ‘hard’ coastal defences with natural ‘soft’ coastal landforms (Pethick 2002). This process can be used to protect areas of land further inland rather than that near the coast by relying on natural defences to absorb or dampen the force of waves.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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