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Coastal Urban Flood Simulation Using FEM, GIS and Remote Sensing

DSpace at IIT Bombay

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Title Coastal Urban Flood Simulation Using FEM, GIS and Remote Sensing
 
Creator SHAHAPURE, SS
ELDHO, TI
RAO, EP
 
Subject channel networks
wave-propagation
overland-flow
model
equation
areas
urban watershed
flood simulation
diffusion wave model
finite element method
geographical information systems
remote sensing
 
Description In this paper, a rainfall runoff model for coastal urban watershed considering the effects of tidal variations using Finite Element Method (FEM) is presented. Overland flow is modeled using the mass balance equation considering the impervious character of the urban watershed. Storm water flow through the channel is modeled using the diffusion wave form of the Saint Venant's equations and considering the tidal variations. Galerkin's FEM is used in the approximation of the governing equations. One dimensional linear line elements are used in the channel discretization. Further the mass balance based overland flow model and diffusion wave based channel flow model have been integrated for prediction of flood. Slope values for the overland flow are determined using the Geographical Information System (GIS) from the Digital Elevation Model (DEM) of the area. The landuse is determined using the remote sensing data. Remote sensing data is analyzed using the ERDAS Imagine and ArcGIS and the Manning's roughness is calculated for each subdivision of subcatchment. The developed models have been verified with the models available in literature and are found to be satisfactory. Further, the integrated model has been applied to the runoff simulation of a coastal urban watershed in Navi Mumbai, in Maharashtra state of India to analyze the flooding in monsoon season along with the tidal influences. The model could satisfactorily predict the runoff due to monsoon rains coupled with the tidal variations. The developed model will be useful in the urban coastal flood analysis due to heavy rainfall and tidal effects.
 
Publisher SPRINGER
 
Date 2011-08-29T10:46:41Z
2011-12-26T12:58:33Z
2011-12-27T05:48:43Z
2011-08-29T10:46:41Z
2011-12-26T12:58:33Z
2011-12-27T05:48:43Z
2010
 
Type Article
 
Identifier WATER RESOURCES MANAGEMENT, 24(13), 3615-3640
0920-4741
http://dx.doi.org/10.1007/s11269-010-9623-y
http://dspace.library.iitb.ac.in/xmlui/handle/10054/12058
http://hdl.handle.net/10054/12058
 
Language en