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首页> 外文期刊>地下水学会誌 >Use of high-resolution elevation data to assess the vulnerability of the Bangkok metropolitan area to sea level rise
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Use of high-resolution elevation data to assess the vulnerability of the Bangkok metropolitan area to sea level rise

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Using high-resolution elevation data(2 m×2 m),obtained during a 2012 aerial Lidar survey as part of the Chao Phraya River basin flood management project in Thailand,we assessed the impact of sea level rise due to climate change on the Bangkok metropolitan area.The area below the current median tide of 1.11 m was estimated to be 2,520 km~2,with a vulnerable population of 3.9 million,equivalent to 23of the total population of the Bangkok metropolitan area.In the worst-case scenario of Representative Concentration Pathway(RCP)8.5(sea level rise of+1.10 m),the affected area would extend to 6,140 km~2,increasing the estimated vulnerable population by 86to 7.2 million.With a sea level rise of less than+1.10 m,the affected area would extend from the Chao Phraya River mouth to Suphan Buri,which is about 80 km inland;however,the density of the vulnerable population would increase.The results of this study suggest that sea level rise adaptation measures,such as migration and settlement,must be developed as soon as possible.

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