The coast has many categories that occur naturally, such as sandy beach, rocky beach. Beach mud. San Sai (sand dune) and man-made buildings, such as the protective coastal residential areas along the port side, etc. The impact of these resources is vital to the rise of sea level, which will cause loss of coastal areas. It also may increase the severity of coastal erosion. Coastal erosion is caused by several factors such as the influence of sea level. Wind and waves, tides, particularly severe storm causes coastal erosion is severe. In the area of the mouth of the river the severity of coastal areas, erosion, depending on the quantity of rain fell on the Mainland. Make water quantity. Water front land runoff (runoff) and sediment in the river has changed. From a study by the model affected by the change of wave offshore in the future 20 years of changes in the level 1-2 meters, the highest level to change the area of the Tambon Cha am Cha am District 2-meter section has changed in the change in level. 1 m: South coast of Amphoe mueang prachuap khiri Khan and bang saphan bang saphan bang saphan Noi, which is offshore from Cha-am to prachuap khiri Khan. There is a sandy beach, and is a major tourist attraction on the beach, these areas may be affected by coastal erosion. Sandy Beach area, it disappeared. Changes in water temperature and weather meteorological conditions will affect the wind direction and sea water, in which this change, although the study did not evaluate in detail, but enough to deduce that there may be a result of coastal erosion and severe destruction of the basic utilities that have been created, including the potential State of the salt water penetration into the Earth, more specifically, the main river mouth phenomenon ' concept, it will continue to affect the life and career of the people in the study area.
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