Universiti Teknologi Malaysia Institutional Repository

Georeference, rainfall-runoff modeling and 3D dynamic simulation: Physical influence, integration and approaches

Ujang, Muhamad Uznir and Abdul Rahman, Alias and Katimon, Ayob and M. Y., Izham (2010) Georeference, rainfall-runoff modeling and 3D dynamic simulation: Physical influence, integration and approaches. ACM International Conference Proceeding Series (21). p. 40918. ISSN ISBN: 978-1-4503-0031-5

[img] PDF (Abstract)
122Kb

Official URL: http://dx.doi.org/10.1145/1823854.1823879

Abstract

Current 2D-GIS based rainfall-runoff modeling provides very little evidence regarding the influence of georeference and its transformation while modeling flow direction and runoff volume. Within GIS, all stream networks, surface structures and its properties must be assigned and preserved within appropriate projection plane characteristics. In addition, the inability of GIS to realistically explore the momentum and continuity aspects of overland flow and runoff process has been proven to be the shortcomings of the system. Inclusion of volumetric soft geoobjects (VSG) would offer substantial effort towards representing 3D dynamic stormwater flow that hits the flood-plain areas, estimating infiltrated and saturated stormwater to reduce flash flood and preventing landslide disaster realistically. This study aims to visualize the influence of georeference towards determining areas prone to runoff and its volume using 3D VSG data model for empirical based Soil Conservation Service – Curve Number (SCS-CN) method. Runoff and overland flow generated from these methods are analyzed by focusing on spatial object preservation techniques of currently implementing conformal based Malaysian Rectified Skew Orthomorphic (MRSO) and equidistant based Cassini-Soldner projection. Land use of Industrial, Infrastructure and Grass / Pasture distributes high differential computation of surface runoff volume with 10.86 percent, 16.98 percent and 13.48 percent respectively due to different projection plane.

Item Type:Article
Uncontrolled Keywords:3D simulation, dynamic, GIS, map projection, SCS-CN, visualization
Subjects:T Technology > TD Environmental technology. Sanitary engineering
Divisions:Geoinformation and Real Estate
ID Code:26139
Deposited By: Liza Porijo
Deposited On:27 Jun 2012 08:30
Last Modified:24 Aug 2014 08:01

Repository Staff Only: item control page