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Details for article 1 of 3 found articles
| Title: |
Delineating flood risk areas in Greater Dhaka of Bangladesh using geoinformatics |
| Author: |
Dewan, Ashraf M. Kabir, Md. Humayun Islam, M. Monirul Kumamoto, T. Nishigaki, M. |
| Appeared in: |
Georisk |
| Paging: | Volume 1 (2007) nr. 4 pages 190-201 |
| Year: |
2007-12 |
| Contents: |
This paper illustrates the development of flood hazard and risk maps in Greater Dhaka of Bangladesh using geoinformatics. Multi-temporal RADARSAT SAR and GIS data were employed to delineate flood hazard and risk areas for the 1998 historical flood. Flood-affected frequency and flood depth were estimated from multi-date SAR data and considered as hydrologic parameters for the evaluation of flood hazard. Using land-cover, gemorphic units and elevation data as thematic components, flood hazard maps were created by considering the interactive effect of flood frequency and flood water depth concurrently. Analysis revealed that a major portion of Greater Dhaka was exposed to high to very high hazard zones while a smaller portion (2.72%) was free from the potential flood hazard. Flood risk map according to administrative division showed that 75.35% of Greater Dhaka was within medium to very high risk areas of which 53.39% of areas are believed to be fully urbanized by the year 2010. |
| Publisher: |
Taylor & Francis |
| Source file: |
Elektronische Wetenschappelijke Tijdschriften |
Details for article 1 of 3 found articles
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