Identification and delineation of areas flood hazard using high accuracy of DEM data

Flood incidents that often occur in Karawang regency need to be mitigated. These expectations exist on technologies that can predict, anticipate and reduce disaster risks. Flood modeling techniques using Digital Elevation Model (DEM) data can be applied in mitigation activities. High accuracy DEM da...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2018-05, Vol.149 (1), p.12035
Main Authors: Riadi, B, Barus, B, Widiatmaka, Yanuar, M J P, Pramudya, B
Format: Article
Language:English
Subjects:
Accuracy
Data processing
Digital Elevation Models
Flood control
Flood hazards
Flood mapping
Flood predictions
Flooding
Floods
Image resolution
Information processing
Land cover
Land use
Landsat
Landsat satellites
Mitigation
Modelling
Morphology
Remote sensing
Rice fields
Satellite imagery
Wetlands
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Summary:Flood incidents that often occur in Karawang regency need to be mitigated. These expectations exist on technologies that can predict, anticipate and reduce disaster risks. Flood modeling techniques using Digital Elevation Model (DEM) data can be applied in mitigation activities. High accuracy DEM data used in modeling, will result in better flooding flood models. The result of high accuracy DEM data processing will yield information about surface morphology which can be used to identify indication of flood hazard area. The purpose of this study was to identify and describe flood hazard areas by identifying wetland areas using DEM data and Landsat-8 images. TerraSAR-X high-resolution data is used to detect wetlands from landscapes, while land cover is identified by Landsat image data. The Topography Wetness Index (TWI) method is used to detect and identify wetland areas with basic DEM data, while for land cover analysis using Tasseled Cap Transformation (TCT) method. The result of TWI modeling yields information about potential land of flood. Overlay TWI map with land cover map that produces information that in Karawang regency the most vulnerable areas occur flooding in rice fields. The spatial accuracy of the flood hazard area in this study was 87%.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/149/1/012035