TAILIEUCHUNG - Báo cáo " Impacts of climate change on inundation and salinity intrusion of Cuu Long delta "

Base on the results of the flow simulated by Mekong River Commission (MRC), combined with Sea Level Rise (SLR) and salinity scenarios by IMHEN, the paper presents impacts of CC on flooding and salinity intrusion in Cuu Long Delta. By 2050, the maximal flooded area which is more than m depth can be up to of the entire area of Cuu Long Delta. The maximum distance of salinity intrusion increases in the main rivers can reach by 10 km by the middle of the 21st century. The area affected by salinity intrusion at 4‰ occupies 41%. | VNU Journal of Science Earth Sciences 27 2011 112-118 Impacts of climate change on inundation and salinity intrusion of Cuu Long delta Hoang Minh Tuyen Vietnam Institute of Meteorology Hydrology and Environment 23 62 Nguyen Chi Thanh Hanoi Vietnam Received 4 April 2011 Abstract. Base on the results of the flow simulated by Mekong River Commission MRC combined with Sea Level Rise SLR and salinity scenarios by IMHEN the paper presents impacts of CC on flooding and salinity intrusion in Cuu Long Delta. By 2050 the maximal flooded area which is more than m depth can be up to of the entire area of Cuu Long Delta. The maximum distance of salinity intrusion increases in the main rivers can reach by 10 km by the middle of the 21st century. The area affected by salinity intrusion at 4 0 occupies 41 area of all Cuu Long Delta and by salinity 1 0 is 59 of natural area. Keywords Inundation salinity intrusion Cuu Long climate change. 1. Introduction Cuu Long Delta is one of the major deltas in Vietnam. Located in the downstream of Mekong river basin it covers 13 provinces with the total natural area of approximately million ha accounting for 79 of the total deltaic area and 5 of the area of Mekong river basin. Climate change has occurred deeply affecting the socio-economic development in the Cuu Long Delta 1 . The water flowing into Cuu Long Delta mainly originates outside of Vietnamese territory. Therefore to assess the impacts of climate change on Cuu Long Delta s flooding and salinity intrusion it has to be carried out to assess the changes of water resources all over Tel. 84-4-38357106 E-mail hmtuyen@vkttv. edu. vn Mekong River Basin 2 . Thus we inherit the research findings of MRC especially which of the project MRC-CSIRO Reducing vulnerability of water resources people and the environment in the Mekong Basin to climate change impacts the results of which were printed and reported in Technical Paper in 6 2010 3 . The research of MRCS mainly assessed the flow

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