Development of the reliable hydrological model for mountainous basin based on the latest knowledge and future runoff prediction

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K06241
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Hydraulic engineering
• Research Institution: Meisei University
• Principal Investigator: Fujimura Kazumasa 明星大学, 理工学部, 教授 (70229037)
• Co-Investigator(Kenkyū-buntansha): 鼎 信次郎 東京工業大学, 環境・社会理工学院, 教授 (20313108)
• Co-Investigator(Renkei-kenkyūsha): Okada Shoji 高知工業高等専門学校, 環境都市デザイン工学科, 准教授 (80346519) ; Murakami Masahiro 高知工科大学, 名誉教授 (30299391)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 水循環モデル / 貯留関数式 / 最適パラメータ / 山地流域 / 将来流出予測

Outline of Final Research Achievements

Mountainous basins are the strategic area of both water resources and flood control in Japan. Therefore, the accurate reproduction and reliable prediction of runoff from mountainous basins are significant issue. In order to develop reliable hydrological model, this study investigate the property of the parameters in the storage-discharge relationship for low flows and floods. In addition, the hydrological analysis are carry out to estimate the runoff variation in the future using GCM data. The results show that, a) the two parameters for low flow have inverse relationship, b) the two parameters for floods have the relationship which is represented by exponential function. c) This study also examined the parameters which can be more convincingly used in practical applications. Furthermore the runoff of monthly mean and annual mean from 2080 to 2099 was estimated using climate projections of GCM and the hydrological model of this study.

Free Research Field

水文学、河川工学