权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

An Analysis of the Hydrological Runoff System Based on the Digital National Land Information

基于数字国土信息的水文径流系统分析

基本信息

批准号：
01550404
负责人：
TAKASAO Takuma
金额：
$ 1.34万
依托单位：
Kyoto 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：
1989
资助国家：
日本
起止时间：
1989 至 1990
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-01550404/
关键词：
The National Landform Information Digital map Stream order Link magnitude Fractual Basin model Basin topographic structure Digital Topographic information 流域地形地形則河道網地形性降雨

项目摘要

In this research, two systems using general purpose computers and the Digital National Land Information released by the Geological Surveying Institute, the Ministry of Construction are developed. One is an automatic data processing system for analysis of geomorphologic features of drainage basins and channel networks, and the other is an automatic generating system for modeling of drainage basins which consider the topography of natural watershed.1. Automatic data processing system for analysis of geomorphologic features of drainage basins and channel networksThe system makes it possible to analyze the geomorphologic features more objectively and automatically than a conventional method and to show a three-dimensional structure of a basin, and various characteristic values based on the Horton-Strahler stream number and link magnitude are calculated automatically. These values in ten river basins (190-870 Km^2) are calculated and compared.2. Automatic generating system for modeling of drainage basins which consider the topography of natural watershedIn this system, the topographic surface of a basin is represented by trianguler elements which are generated from grid based DEM (Digital Elevation model). A basin coverd with triangular elements is divided into slope elements and runoff height of every slope element is calculated.This method is applied to the Ina River Basin using the Digital National Land Information, and the availability of this method is confirmed.

本研究开发了两个通用计算机系统和建设部地质调查院发布的数字国土信息系统。一个是用于流域和河网地貌特征分析的数据自动处理系统，另一个是考虑自然流域地形的流域模型自动生成系统.一种用于分析流域和河道网络地貌特征的自动数据处理系统。该系统可以比传统方法更客观和自动地分析地貌特征，并显示流域的三维结构，并自动计算基于Horton-Strahler流数和连接量级的各种特征值。计算并比较了10个流域（190-870 km ^2）的这些值.考虑自然流域地形的流域模型自动生成系统在该系统中，流域地形表面由基于栅格的DEM（数字高程模型）生成的三角形单元表示。将三角形单元覆盖的流域划分为坡面单元，计算各坡面单元的产流高度，并将该方法应用于以数字国土信息为基础的伊纳河流域，验证了该方法的有效性。