气候变化领域集成服务门户(CCPortal): A method to reconstruct flood scenarios using field interviews and hydrodynamic modelling: application to the 2017 Suleja and Tafa, Nigeria flood

CCPortal

DOI	10.1007/s11069-021-04756-z
	A method to reconstruct flood scenarios using field interviews and hydrodynamic modelling: application to the 2017 Suleja and Tafa, Nigeria flood
	Malgwi M.B.; Ramirez J.A.; Zischg A.; Zimmermann M.; Schürmann S.; Keiler M.
发表日期	2021
ISSN	0921030X
起始页码	1781
结束页码	1805
卷号	108 期号:2
英文摘要	The scarcity of model input and calibration data has limited efforts in reconstructing scenarios of past floods in many regions globally. Recently, the number of studies that use distributed post-flood observation data collected throughout flood-affected communities (e.g. face-to-face interviews) are increasing. However, a systematic method that applies such data for hydrodynamic modelling of past floods in locations without hydrological data is lacking. In this study, we developed a method for reconstructing plausible scenarios of past flood events in data-scarce regions by applying flood observation data collected through field interviews to a hydrodynamic model (CAESAR-Lisflood). We tested the method using 300 spatially distributed flood depths and duration data collected using questionnaires on five river reaches after the 2017 flood event in Suleja and Tafa region, Nigeria. A stepwise process that aims to minimize the error between modelled and observed flood depth and duration at the locations of interviewed households was implemented. Results from the reconstructed flood depth scenario produced an error of ± 0.61 m for all observed and modelled locations and lie in the range of error produced by studies using comparable hydrodynamic models. The study demonstrates the potential of utilizing interview data for hydrodynamic modelling applications in data-scarce regions to support regional flood risk assessment. Furthermore, the method can provide flow depths and durations at houses without observations, which is useful input data for physical vulnerability assessment to complement disaster risk reduction efforts. © 2021, The Author(s).
关键词	Data-scarce Flood duration Floods Hydrodynamic modelling Interviews Peak discharge
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/206403
作者单位	Institute of Geography, University of Bern, Hallerstrasse 12, Bern, 3012, Switzerland; Oeschger Centre for Climate Change Research, University of Bern, Hochschulstrasse 4, Bern, 3012, Switzerland; Mobiliar Lab for Natural Risks, University of Bern, Hallerstrasse 12, Bern, 3012, Switzerland
推荐引用方式 GB/T 7714	Malgwi M.B.,Ramirez J.A.,Zischg A.,et al. A method to reconstruct flood scenarios using field interviews and hydrodynamic modelling: application to the 2017 Suleja and Tafa, Nigeria flood[J],2021,108(2).
APA	Malgwi M.B.,Ramirez J.A.,Zischg A.,Zimmermann M.,Schürmann S.,&Keiler M..(2021).A method to reconstruct flood scenarios using field interviews and hydrodynamic modelling: application to the 2017 Suleja and Tafa, Nigeria flood.Natural Hazards,108(2).
MLA	Malgwi M.B.,et al."A method to reconstruct flood scenarios using field interviews and hydrodynamic modelling: application to the 2017 Suleja and Tafa, Nigeria flood".Natural Hazards 108.2(2021).