Establishing flood damage functions for agricultural crops using estimated inundation depth and flood disaster statistics in data-scarce regions

• Nguyen Nhu Y

  Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi

• Ichikawa Yutaka

  Graduate School of Engineering, Kyoto University

• Ishidaira Hiroshi

  Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi

抄録

Flood damage functions form the core of flood risk assessment. This study proposes a method for establishing flood damage functions for agricultural crops in data-scarce regions. The method assumes that the flood damage ratio is a function of inundation depth only and utilizes inundation depth estimated from flood extent information and hydrodynamic simulations. The parameters of the damage functions are calibrated through the SCE-UA method (Shuffled Complex Evolution method developed at The University of Arizona) so that the calculated flood damages match observations compiled in flood disaster statistics. The established three functions show good agreement with actual agricultural damages caused by a rainfall event in 2010 and are validated against another rainfall event in 2009. The results indicate that the established damage functions are capable of estimating flood damage at the district scale, while damage estimations at finer spatial resolution differ between the functions, suggesting that detailed statistical data need to be incorporated to reduce the estimation uncertainty at fine scales.

収録刊行物

• Hydrological Research Letters

  Hydrological Research Letters 11 (1), 12-18, 2017

  水文・水資源学会／日本地下水学会／日本水文科学会／陸水物理研究会

キーワード

• Earth and Planetary Sciences (miscellaneous)
• Water Science and Technology

詳細情報

• CRID: 1390282680266852352
• NII論文ID: 130005303281
• DOI: 10.3178/hrl.11.12
• ISSN: 18823416
• Web Site: https://www.jstage.jst.go.jp/article/hrl/11/1/11_12/_pdf
• 本文言語コード: en
• データソース種別:
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