标题：Building Topological Flow-Path Networks Based On Scale-adaptive DEM

作者：Chen, Yumin; Bi, Xiaomei; Li, Yajuan; Wan, Qiao

来源出版物：2013 21ST INTERNATIONAL CONFERENCE ON GEOINFORMATICS (GEOINFORMATICS) 出版年：2013

丛书：International Conference on Geoinformatics

会议名称：21st International Conference on Geoinformatics (Geoinformatics)

会议时间：JUN 20-22, 2013

会议地点：Kai Feng, PEOPLES R CHINA

摘要：In this study, we propose to simulate the dynamics of surface flow using a Topological Flow-path Network model (TFN) based on scale-adaptive DEMs (S-DEMs). This model makes full use of the high accuracy DEM data to extract topographical and hydrological characteristics from the terrain surface. It also assigns these characteristics with scale properties, thus building a stream-network-bounded scale-adaptive DEM system. For each DEM, a triangulated irregular network (TIN) surface is established and flow direction is calculated for each triangular facet in the TIN, building the flow paths from any location in the DEM to the basin outlet, such that a three-dimensional terrain expression is simplified to a one dimension topology flow structure. For each flow path, hydrological variables, such as flow velocity and volume, are computed using classic hydrological formula to support cross-scale simulation of the surface water dynamics.

入藏号：WOS:000339361500116

文献类型：Proceedings Paper

语种：English

作者关键词：DEM, scale-adaptive, terrain analysis, topological flow-path network model, dynamic simulation

扩展关键词：DISTRIBUTED HYDROLOGICAL MODEL

通讯作者地址：Bi, Xiaomei;Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430079, Peoples R China.

电子邮件地址：xiaomeibi@whu.edu.cn

地址：[Chen, Yumin; Bi, Xiaomei; Li, Yajuan; Wan, Qiao] Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430079, Peoples R China.

研究方向：Computer Science; Engineering; Geology

ISSN：2161-024X