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The accuracy of slope images derived from GIS software

Ibrahim, Norkhair (2003) The accuracy of slope images derived from GIS software. Geoinformation Science Journal, 3 (1). pp. 47-55. ISSN 1511-9491

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Abstract

A major part of high frequency gravity signals is governed by the masses of topography. Practically, this effect can be evaluated by using the integration formula of terrain corrections. In this study, the topographic conditions are classified as: Block I (flat), Block II (hilly), and Block III (mountainous). The analysis of the results indicated that the terrain effects are very significant for gravity field information in rough terrains compared to relatively flat areas. A denser grid spacing of Digital Elevation Model (DEM) would contain a lot of gravitational features, especially in the rough terrains. In contrast, for the flat areas, the effect of topographic masses is insignificant, resulting in very small magnitudes as would be expected.

Item Type:Article
Uncontrolled Keywords:terrain effect, gravity field parameter, numerical integration
Subjects:G Geography. Anthropology. Recreation > GA Mathematical geography. Cartography
Divisions:Geoinformation Science And Engineering (Formerly known)
ID Code:3107
Deposited By: Mr. Mohd Faisal Abdul Khanan
Deposited On:01 Jun 2007 04:22
Last Modified:10 May 2011 05:47

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