海面上昇による水没域評価のためのチャオプラヤデルタ広域地盤沈下予測マップ(<特集>地球温暖化と異常気象)

概要

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The purpose of this study is to assess the influence of dual impacts of sea-level rise due to global warming and land subsidence on inundation area in Chao Phraya delta. The future situation of land subsidence in 2100 has been predicted by using a method of reliable land subsidence mapping based on the observations of settlements proposed by Murakami, S. et al. (2005). The future elevation model in the objective regions has been made by using the present elevation model and the predicted land subsidence by using GIS. For investigating the influence of dual impacts of both 59cm sea-level rise and land subsidence on inundation area in Chao Phraya delta, a hazard map of the inundation area has been represented. The hazard map shows that the inundation area caused by dual impacts of 59cm sea-level rise and land subsidence will be approximately 1000km^2. The result shows that it is important for inundation area in Mega Deltas, where land subsidence has taken place, to consider not only sea-level rise but also land subsidence in the future.
社団法人地盤工学会の論文
2009-04-01