FLOOD INUNDATION ANALYSIS IN LOW-LYING RIVER BASIN USING DIFFERENT DIGITTAL ELEVATION MODEL
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- KOURA Kei
- 中央大学大学院 理工学研究科
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- KOYAMA Naoki
- 中央大学研究開発機構
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- YAMADA Tadashi
- 中央大学研究開発機構
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- YAMADA Tomohito J.
- 北海道大学大学院工学研究院
Bibliographic Information
- Other Title
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- 異なる標高データを用いた低平地の河川流域における洪水氾濫解析
Abstract
<p> The purpose of this study is to clarify the differences in flood inundation analysis results when different elevation data are used in flood inundation analysis in low-lying areas. The elevation data used in this study showed an average difference of 2 m to 4 m in low-lying coastal areas compared to the elevation data obtained by airborne laser scanning. The results of the flood inundation analysis at a spatial resolution of about 250 m using these data indicate that the maximum inundation depth is 0.86 m in the case of the smallest average difference between the calculated and measured values, and 0.66 m using the airborne laser scanning elevation data. And we conclude that this difference must be tolerated in the present situation, and that the accuracy of the elevation data is not necessarily proportional to the accuracy of the analysis.</p>
Journal
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- Japanese Journal of JSCE
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Japanese Journal of JSCE 80 (16), n/a-, 2024
Japan Society of Civil Engineers
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Details 詳細情報について
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- CRID
- 1390580793828446208
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- ISSN
- 24366021
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
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- Abstract License Flag
- Disallowed