Can re-infiltration process be ignored for flood inundation mapping and prediction during extreme storms? A case study in Texas Gulf Coast region
Environmental Modelling & Software(2022)
摘要
Coupled Hydrologic & Hydraulic (H&H) models have been widely applied for flood simulations, yet the modern H&H models suffer from one-way and weak coupling and particularly disregarded run-on infiltration, which could compromise the model accuracy. In this study, we assess the H&H model performance with and without re-infiltration process in extreme flooding events. Results highlight that the re-infiltration process should not be disregarded even in extreme flood simulations. Saturated hydraulic conductivity and antecedent soil moisture are found to be the prime contributors to such differences. For the Hurricane Harvey event, the model performance is verified against stream gauges and high water marks, from which the re-infiltration scheme increases the Nash Sutcliffe Efficiency score by 140% on average and reduces maximum depth differences by 17%. Meanwhile, the recent update of the CREST-iMAP model Version 1.1, which incorporates two-way coupling and re-infiltration scheme, is released for public access.
更多查看译文
关键词
Flood inundation modeling,Run-on infiltration,Re-infiltration,Soil moisture,Hydrologic-hydraulic modeling,Extreme flood events,Hurricane harvey,Bayou river basin
AI 理解论文
溯源树
样例
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要