English  |  正體中文  |  简体中文  |  Items with full text/Total items : 43312/67235
Visitors : 2139014      Online Users : 3
RC Version 5.0 © Powered By DSPACE, MIT. Enhanced by NTU/NCHU Library IR team.
National Chung Hsing University Institutional Repository - NCHUIR > 農業暨自然資源學院 > 水土保持學系 > 依資料類型分類 > 期刊論文 >  Application depression of the PROMETHEE technique to determine outlet location and flow direction in DEM

Please use this identifier to cite or link to this item: http://nchuir.lib.nchu.edu.tw/handle/309270000/130295

標題: Application depression of the PROMETHEE technique to determine outlet location and flow direction in DEM
作者: Chou, T.Y.;Lin, W.T.;Lin, C.Y.;Chou, W.C.;Huang, P.H.
關鍵字: digital elevation model;Preference Ranking Organization METHod for;Enrichment Evaluation;hydrological parameter;digital terrain analysis;TOPAZ;depression-filling;digital elevation models;drainage networks;terrain models
日期: 2004
Issue Date: 2012-12-07 15:52:40 (UTC+8)
關連: Journal of Hydrology, Volume 287, Issue 1-4, Page(s) 49-61.
摘要: With the fast growing progress of computer technologies, spatial information on watersheds such as flow direction, watershed boundaries and the drainage network can be automatically calculated or extracted from a digital elevation model (DEM). The stubborn problem that depressions exist in DEMs has been frequently encountered while extracting the spatial information of terrain. Several filling-up methods have been proposed for solving depressions. However, their suitability for large-scale flat areas is inadequate. This study proposes a depression watershed method coupled with the Preference Ranking Organization METHod for Enrichment Evaluations (PROMETHEEs) theory to determine the optimal outlet and calculate the flow direction in depressions. Three processing procedures are used to derive the depressionless, flow direction: (1) calculating the incipient flow direction; (2) establishing the depression watershed by tracing the upstream drainage area and determining the depression outlet using PROMETHEE theory; (3) calculating the depressionless flow direction. The developed method was used to delineate the Shihmen Reservoir watershed located in Northern Taiwan. The results show that the depression watershed method can effectively solve the shortcomings such as depression outlet differentiating and looped flow direction between depressions. The suitability of the proposed approach was verified. (C) 2003 Elsevier B.V. All rights reserved.
Relation: Journal of Hydrology
Appears in Collections:[依資料類型分類] 期刊論文
[依教師分類] 林昭遠
[依教師分類] 林昭遠

loading Web of Knowledge data....

Files in This Item:

File SizeFormat






聯絡網站維護人員:wyhuang@nchu.edu.tw,04-22840290 # 412。

DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU/NCHU Library IR team Copyright ©   - Feedback