Development of the planning method of urban land use adapting to extreme precipation events

2023 Fiscal Year Final Research Report

• Project/Area Number: 20K04862
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 23030:Architectural planning and city planning-related
• Research Institution: Kwansei Gakuin University
• Principal Investigator: Kyakuno Takashi 関西学院大学, 総合政策学部, 教授 (80322725)
• Project Period (FY): 2020-04-01 – 2024-03-31
• Keywords: 豪雨 / 都市環境 / 極値統計 / 地理情報 / 都市計画

Outline of Final Research Achievements

In this study we analyzed the frequency of torrential rain events and those future intensities in urban areas and those surrounding areas by using statistical methods and geographic information systems. The analysis was carried out for a wide urban area using 1 km mesh rain data. the result is as follows: the torrential rain events are more frequent in urban areas than in non-urban areas, and this trend is more pronounced in more recent years. The study also found that the intensity of torrential rain predicted in the future will be higher in urban areas.

Free Research Field

都市環境

Academic Significance and Societal Importance of the Research Achievements

本研究の成果は都市部における豪雨の頻度と将来的に予測される極端な豪雨の強度などを明らかにしたもので、SDGｓに係る社会的ニーズに呼応し、また喫緊の課題である災害に強いまちづくりに寄与するものである。また学術的な面でみても、特に同一の地域において都市部と非都市部における豪雨の傾向をその頻度と強度の両方の点から比較分析し、さらに地形や土地利用などと重ねて考察したこと、さらに対象地における将来的な土地利用の指針などを導き出した点が独自の成果である。