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    题名: Clustering-based hybrid inundation model for forecasting flood inundation depths
    作者: Chang, Li-Chiu;Shen, Hung-Yu;Wang, Yi-Fung;Huang, Jing-Yu;Lin, Yen-Tso
    贡献者: 淡江大學水資源及環境工程學系
    关键词: Flood inundation map;K-means clustering;Back-propagation neural network;Linear regression
    日期: 2010-05
    上传时间: 2011-10-23 02:05:09 (UTC+8)
    出版者: Amsterdam: Elsevier BV
    摘要: Estimation of flood depths and extents may provide disaster information for dealing with contingency and alleviating risk and loss of life and property. We present a two-stage procedure underlying CHIM (clustering-based hybrid inundation model), which is composed of linear regression models and ANNs (artificial neural networks) to build the regional flood inundation forecasting model. The two-stage procedure mainly includes data preprocessing and model building stages. In the data preprocessing stage, K-means clustering is used to categorize the data points of the different flooding characteristics in the study area and to identify the control point(s) from individual flooding cluster(s). In the model building stage, three classes of flood depth forecasting models are built in each cluster: the back-propagation neural network (BPNN) for each control point, the linear regression models for the grids that have highly linear correlation with the control point, and a multi-grid BPNN for the grids that do not have highly linear correlation with the control point. The practicability and effectiveness of the proposed approach is tested in the Dacun Township, Changhua County in Central Taiwan. The results show that the proposed CHIM can continuously and adequately provide 1-h-ahead flood inundation maps that well match the simulation flood inundation results and very effectively reduce 99% CPU time.
    關聯: Journal of Hydrology 385(1–4), pp.257–268
    DOI: 10.1016/j.jhydrol.2010.02.028
    显示于类别:[水資源及環境工程學系暨研究所] 期刊論文

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