Universiti Teknologi Malaysia Institutional Repository

The terrain effects in gravity field modelling with respect to gridded topographic spacings

Wan Akib, Wan Abd. Aziz and Saari, Raduan (2003) The terrain effects in gravity field modelling with respect to gridded topographic spacings. Geoinformation Science Journal, 3 (1). pp. 29-39. ISSN 1511-9491

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Abstract

A major part of high frequency gravity signals is governed by the masses of the 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 is very significant for gravity field information in rough terrains compared to relatively flat areas. A denser grid spacing of Digital Elevation Model (OEM) 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:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Geoinformation Science And Engineering (Formerly known)
ID Code:12592
Deposited By: Ms Zalinda Shuratman
Deposited On:14 Jun 2011 08:15
Last Modified:14 Jun 2011 08:15

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