国立研究開発法人土木研究所

論文・刊行物検索

利用者の方へ

詳細情報

論文投稿 Improvement of flood disaster damage assessment using highly accurate IfSAR DEM

作成年度 2016 年度
論文名 Improvement of flood disaster damage assessment using highly accurate IfSAR DEM
論文名(和訳)
論文副題
発表会
誌名 Journal of Disaster Research
巻・号・回 12 Vol. 11 (6)
発表年月日 2016/12/01
所属研究室/機関名 著者名(英名)
ICHARMBadri Bhakta Shrestha
ICHARMHisaya Sawano
ICHARMMiho Ohara
ICHARMNaoko Nagumo
抄録
Flood damage to agriculture (rice crops) was assessed in the Pampanga River basin of the Philippines. Flood damage to agriculture was defined as a function of hazard characteristics, such as flood depth and flood duration, exposure, and growth stage of rice crops, and estimated in terms of yield loss using a depth-duration-damage function. The assessment of flood damage to agriculture in the Pampanga River basin was conducted using Digital Elevation Model data of the Interferometric Synthetic Aperture Radar (IfSAR-DEM) and Digital Elevation Model data of the Shuttle Radar Topography Mission (SRTM-DEM). The results were further improved using highly accurate IfSAR-DEM. To assess flood disaster damage, a hazard assessment was conducted using the Rainfall Runoff Inundation model. Estimated values from the agricultural damage assessment during the flood event from September 26 to October 4, 2011 were compared with reported values. The accuracy of flood hazard assessment and flood disaster risk assessment highly depends on the quality of topographical data, and better results can be obtained by using highly precise topographical data. Flood disaster risk assessment in the agricultural sector was also conducted for a recent flood in October 2015 and flood events with different return periods of 10, 25, 50, and 100 years. The assessment results based on the different return periods of flood events were then used to estimate the probability of agricultural damage for most frequently damaged and rarely damaged areas. The results of flood damage assessment in the Pampanga River basin provide a basis to identify areas at risk, and these results can be useful for planners, developers, policy makers, and decision makers in establishing policies required to reduce flood damage.
ページの先頭へ

この画面を閉じる

Copyright (C) 2022 Independent Administrative Institution Public Works Research Institute