查詢結果分析
來源資料
頁籤選單縮合
題 名 | 流域降雨-逕流串聯集塊模式序率微分方程理論分析=The Analysis of Stochastic Lumped Rainfall-Runoff Model for Watershed in Series |
---|---|
作 者 | 李繼尊; 陳主惠; 譚義績; | 書刊名 | 農業工程學報 |
卷 期 | 44:2 1998.06[民87.06] |
頁 次 | 頁48-58 |
分類號 | 328.63 |
關鍵詞 | 步階函數; 序率微分方程式; 拉普拉司轉換; Unit step function; Stochastic differential equation; Laplace transform; |
語 文 | 中文(Chinese) |
中文摘要 | 本文目的在建立流域降雨-逕流串聯集塊序率微分方程模式,主要重點在於將流 域中每一流量站控制的面積視為一次流域,每一次流域即為一集塊系統,各有其降雨輸入及 流量輸出,而一個次流域量輸出亦可能為另一次流域之輸入,以次流域串聯情況為例,說明 整個流域降雨-逕流模擬機構;同時,對於水文系統輸出輸入之不確定性,將以包含平均項 及隨機項的變數帶入模式中,轉換成序率微分方程式,再利用序率微分方程式理論及拉普拉 司轉換求出各次流域出流量序率歷程,並推演第二階動差歷程,以模擬出具有隨機性質之出 流量。 |
英文摘要 | The purpose of this paper is to establish a stochastic differential equations of lumped rainfall-runoff model for a watershed in series that is consisted of a number of sub-watersheds, The arrangement of the sub-watersheds and their inter-connections will also be a series structure. Each modeled sub-watershed unit is composed of two elements-one for converting rainfll excess on the sub-watershed area into outflow at the sub-watershed outlet and the other is converted outflow of the sub-watershed into inflow at another sub-watershed inlet. The measured data of rainfall excess with random variables was input to the rainfall-runoff model and develop the moment equations of simulated outflow is based on stochastic differential equation. The Laplace transform of rainfall excess was taken and substituted into the watershed system equation to obtain the Laplace transform of the outflow of the watershed. |
本系統中英文摘要資訊取自各篇刊載內容。