Application of Stochastic System Theory for Rainfall Runoff Analysis

随机系统理论在降雨径流分析中的应用

• 批准号: 62460207
• 负责人: SHIKASHO Shiomi
• 金额: $ 2.11万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1987
• 资助国家: 日本
• 起止时间: 1987 至 1988
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-62460207/
• 关键词: Small Mountainous Basin; Runoff Process; Parameter Identification; Basin Storage; 斜面流の抵抗則; 流域注留量

Studies are made on flood runoff processes in small mountainous basin through variation in timespace-varying parameters of the nonlinear relationship between basin storage and dischage. An identification method of the parameters is used by the stochastic system theory.The results are summarized as follows:1. Parameter argumentation is utilized in state space formulation by using stochashic system theory.2. The variations of time-varying storage parameters are closely related to the generation of fast flowe on a hillslope as represented by gully runoffs,and it is possible to inversely estimate the average flow-ststes by identification of the variations.3. A model,in which storage Sc is used to join the ralationship between basin storage and discharge when throughflows predominate and that when fast flows (represented by gully flow) predominate,is introduced. It is shown that Sc can be estimated by nonlinear filtering with only rainfall and discharge data. The method of identifying the parameters using Sc are also shown.4. It is important for lumping problem to clarify space variations of runoff model parameters.

通过流域蓄排非线性关系的时空变化参数的变化来研究山地小流域的洪水径流过程。采用随机系统理论对参数进行辨识，结果如下： 1．利用随机系统理论将参数论证应用于状态空间的表述。 2．时变蓄水参数的变化与以沟谷径流为代表的山坡快速水流的产生密切相关，通过识别其变化可以反推平均水流状态。 3．介绍了当通流占主导地位和当快速流（以沟壑流为代表）占主导地位时，用蓄水量Sc来连接流域蓄排关系的模型。结果表明，Sc 可以通过仅使用降雨和流量数据的非线性滤波来估计。还给出了利用Sc识别参数的方法； 4．对于集总问题来说，阐明径流模型参数的空间变化非常重要。

项目成果

平松和昭: 農業土木学会論文集. 128. 85-92 (1987)

Kazuaki Hiramatsu：日本农业和土木工程师学会会议记录 128. 85-92 (1987)。

四ケ所四男美: 九州大学農学部学芸雑誌. 44. (1989)

Shikasho Yobi：九州大学农学院学术杂志44。（1989）。

四ケ所四男美: 農業土木学会誌. 56. 1058-1060 (1988)

Shikasho Yobi：日本农业和土木工程师学会杂志 56. 1058-1060 (1988)。

Shikasho, Shiomi: "On the Equivalent Roughness of Kinematic Runoff Model Parameter" Science Bulletin of the Faculty of Agriculture, Kyushu University. 44. (1989)

Shikasho，Shiomi：“关于运动径流模型参数的等效粗糙度”九州大学农学部科学通报。

平松和昭: 農業土木学会論文集.

Kazuaki Hiramatsu：日本农业和土木工程师学会会议记录。