Evaluation method of lumping process of runoff models based on their stochastic response characteristics

基于随机响应特性的径流模型集总过程评价方法

• 批准号: 21760379
• 负责人: TANAKA Gaku
• 金额: $ 3万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21760379/
• 关键词: 降雨流出モデル; 集中化; 洪水予測; 確率過程; 確率応答; 確率微分方程式; 水文学

Using a runoff system composed of a hillslope runoff generation model and a channel network, this paper derives theoretical differential equations to calculate the higher order central moments of discharge. Numerical simulation shows the results of cross-checking the validity of the derived equations. The results show the stochastic properties in a steady state are regarded as constant when the catchment area is smaller than one hundred and several tens kilometers square. The results of this study can be applicable to the evaluation method of lumping process of runoff models based on their stochastic response characteristics.

本文利用由坡面产流模型和河道网络组成的径流系统，推导出计算流量高阶中心矩的理论微分方程。数值模拟结果验证了推导方程的有效性。结果表明，当流域面积小于100平方公里和几十平方公里时，流域稳定状态下的随机特性是恒定的。研究结果可应用于基于径流模型随机响应特性的集总过程评价方法。

项目成果

流出モデルの確率応答特性に基づく集中化に関する基礎的研究-降雨量が互いに独立な確率変数の場合-

基于径流模型随机响应特性的浓度基础研究 - 当降雨量为相互独立的随机变量时 -

• 发表时间: 2011
• 作者: 中川啓;中川原尚子;齋藤雅彦;田中岳
• 通讯作者: 田中岳