FLOOD RISK EVALUATION OF MUNICIPALITY SCALE, BASED ON FLOOD DISASTER STATISTICS
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- YAMADA Masafumi
- 東京大学大学院 工学系研究科
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- CHIBANA Takeyoshi
- 東京大学大学院 工学系研究科
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- WATANABE Satoshi
- 東京大学大学院 工学系研究科
Bibliographic Information
- Other Title
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- 水害統計に基づく市区町村スケールでの水害リスク評価手法の検討
- スイガイ トウケイ ニ モトズク シクチョウソン スケール デ ノ スイガイ リスク ヒョウカ シュホウ ノ ケントウ
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Abstract
Frequency-Damage (FD) method is a statistical analysis for evaluating flood risk curves based on long-term flood damage records. In this study, we propose an improvement of existing FD method that can take account of the years without any disaster damage in a small municipality. By applying existing FD and improved FD method to Japanese municipalities, we were able to show two distinct advantages of the improved FD method. First, improved FD method decreases over and under estimation of the expected value of flood risk compared with the annual average flood damage loss. Second, it reflects more accurately the probabilistic characteristics of flood risk. Therefore, it expands applicability from regional to smaller domains up to basic municipalities. This new method can be used for investigating the regional differences of flood risks and the flood risk characteristics of municipalities.
Journal
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- Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)
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Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research) 74 (5), I_273-I_284, 2018
Japan Society of Civil Engineers
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Details
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- CRID
- 1390282763101642368
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- NII Article ID
- 40021974203
- 130007606641
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- ISSN
- 21856648
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- NDL BIB ID
- 029881165
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed