Rational Evaluation of Flow Rate by Rainfall Considering Flood Arrival Time in Yamato River Basin under Climate Change

被引：0
|
作者：
Omori, Daiki [1 ]
Kurihara, Akira [1 ]
Tanaka, Koji [2 ]
机构：
[1] Osaka Inst Technol, Grad Sch, Dept Architecture & Urban Design, 5-16-1 Omiya,Asahi Ku, Osaka, Japan
[2] Osaka Inst Technol, Dept Civil Engn & Urban Design, 5-16-1 Omiya,Asahi Ku, Osaka, Japan
来源：
PROCEEDINGS OF THE 39TH IAHR WORLD CONGRESS | 2022年
关键词：
Average rainfall over watershed; Flood arrival time; Space-time distribution; Climate change;
D O I：
10.3850/IAHR-39WC2521716X20221072
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Conventional flood control plans have evaluated flow rate based on average rainfall over watershed without considering space-time distribution, and thus the correlation between rainfall and flow varies. This study aims to reasonably evaluate flow rate in response to rainfall, and presents the results of a study to solve the problem of conventional flood control by setting rainfall that takes into account flood arrival time in the Yamato River system, a first-class river.A distributed runoff model was used in the analysis, and a large ensemble climate projection data (d4PDF-RCM) was used as input to analyze the flow rate under climate change. Next, calculate the average rainfall over watershed using the conventional method and the method proposed in this study, which takes into account the flood arrival time, and was compared in correlation with the flow rate. The results showed that the proposed method produced a clearer correlation, but the correlation was weaker than that of the conventional method and was not sufficient to estimate runoff from rainfall.
引用
收藏
页码：6608 / 6616
页数：9
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