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・ Coastal Defence Command (Kingdom of Yugoslavia)
・ Coastal defence ship
・ Coastal defences of Australia during World War II
・ Coastal development hazards
・ Coastal Disturbances
・ Coastal Dreams
・ Coastal Empire Beer Co.
・ Coastal engineering
・ Coastal Engineering Journal
・ Coastal erosion
・ Coastal erosion in Southeast Louisiana
・ Coastal Extreme Brewing Company
・ Coastal Federal Credit Union
・ Coastal fish
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Coastal flood
・ Coastal flood advisory
・ Coastal flood warning
・ Coastal flood watch
・ Coastal Forces of the Royal Australian Navy
・ Coastal Forces of the Royal Canadian Navy
・ Coastal Forces of the Royal Navy
・ Coastal Forces of the Royal New Zealand Navy
・ Coastal Forces of World War II
・ Coastal forests of eastern Africa
・ Coastal fortifications of Jersey
・ Coastal fortifications of New Zealand
・ Coastal geography
・ Coastal Georgia Botanical Gardens
・ Coastal giant salamander


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Coastal flood : ウィキペディア英語版
Coastal flood
Coastal flooding occurs when normally dry, low-lying land is flooded by sea water.〔 The extent of coastal flooding is a function of the elevation inland flood waters penetrate which is controlled by the topography of the coastal land exposed to flooding. The sea water can inundate the land via several different paths:
*Direct inundation — where the sea height exceeds the elevation of the land, often where waves have not built up a natural barrier such as a dune system
*Overtopping of a barrier — the barrier may be natural or human engineered and overtopping occurs due to swell conditions during storm or high tides often on open stretches of the coast. The height of the waves exceeds the height of the barrier and water flows over the top of the barrier to flood the land behind it. Overtopping can result in high velocity flows that can erode significant amounts of the land surface which can undermine defense structures.
*Breaching of a barrier — again the barrier may be natural or human engineered, and breaching occurs on open coasts exposed to large waves. Breaching is where the barrier is broken down by waves allowing the sea water to extend inland.
Coastal flooding is largely a natural event, however human influence on the coastal environment can exacerbate coastal flooding.〔 Extraction of water from groundwater reservoirs in the coastal zone can enhance subsidence of the land increasing the risk of flooding.〔 Engineered protection structures along the coast such as sea walls alter the natural processes of the beach, often leading to erosion on adjacent stretches of the coast which also increases the risk of flooding.〔〔
== Causes ==
Coastal flooding can result from a variety of different causes including storm surges created by storms like hurricanes and tropical cyclones, rising sea levels due to climate change and by tsunamis.

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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