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The calassification of rainfall runoff patterns in Hokkaido

北海道降雨径流模式的分级

基本信息

批准号：
04660243
负责人：
SAKURADA Junji
金额：
$ 1.22万
依托单位：
HOKKAIDO University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1992
资助国家：
日本
起止时间：
1992 至 1994
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-04660243/
关键词：
Rainfall Intensity of rainfall Pattern of runoff Tankmodel Soils

项目摘要

The resalts that the runoff anarysis by Tankmodel were examined at several watersheds in Ishikari River basin in Hokkaido were followed.When the rainfall is large, the coefficient of the low runoff hole at the first tank was large.the coefficients was larger at the watershed of the volcanic ashes soil, loam soil and clay soil.The coefficients at the peat dog watersheds were differed tenndensy from other soil watersheds.By regression anarysis with expanatory variable of rainfall duration, of total rainfall, of rainfall intencity and of peak rainfall, the coefficients of the low runof hole at the first tank and the 4th tank were influenced by rainfall charactristics.Specially, the coefficient of determination of the volcanic ashes soil watersheds was large influenced for all the coeficients of the runoff hole.Soils of watershed is a largest element.the volcanic ashes watershed was influenced by the total rainfall.Clay soil watershed was large facter at peak rainfall.The values of pores, permiability and infiltrations of soils at the pastuter was smaller than that of the forest.The coefficient of the peak discharge at the pastuer was the value of 0.4-0.6 for the center or back peak of rainfall.This was larger than that of the forest.

采用Tank模型对北海道石狩川流域的几个流域进行径流分析，结果表明，降雨量较大时，第一池低径流孔系数较大，火山灰土、壤土、粘性土流域系数较大，泥炭狗流域系数为以降雨历时、总降雨量、降雨强度、降雨峰值为解释变量进行回归分析，一池和四池低径流孔系数受降雨特征的影响较大。其中，火山灰土壤流域的决定系数影响较大。流域土壤是最大的要素。火山灰流域受总降雨量的影响。粘土流域在降雨高峰时影响较大。帕斯图尔土壤的孔隙、渗透性和入渗值均小于森林。帕斯图尔峰值流量系数为降雨中心或后峰的值0.4-0.6。比森林还要大。