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Scale factor and digital elevation analysis for hydrological studies


Citation

Ramli, Mohammad Firuz and Chng, Loi Kok (2007) Scale factor and digital elevation analysis for hydrological studies. Journal of Environmental Hydrology, 15. pp. 1-12. ISSN 1058-3912

Abstract / Synopsis

The digital elevation model (DEM) is usually used to express a topographic surface in three dimensions and to imitate essential natural geography. The DEM is a model of the elevation surface, which is subject to errors. The Gurun area in Kedah, Malaysia was chosen for study, and the focus was on terrain analysis and the impacts of DEM resolution on topographic attributes related to hydrological studies. Five DEM resolutions were derived and the impact of different resolutions on the topographical parameters related to hydrological studies was compared. The result demonstrated that a fine DEM resolution revealed more detailed topographic values compared to the coarse DEM.


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Additional Metadata

Item Type: Article
Subject: Geography
Subject: Hydrology
Divisions: Faculty of Environmental Studies
Publisher: CSA
Keywords: Elevation, Errors, Geography, Hydrologic Models, Hydrology, Terrain Analysis, Topographic effects
Depositing User: Erni Suraya Abdul Aziz
Date Deposited: 31 Jan 2011 15:14
Last Modified: 29 Oct 2015 15:20
URI: http://psasir.upm.edu.my/id/eprint/9409
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