Monitoring the 2004 Flood in the Meghna River Basin in Bangladesh Using Ground Data, Radarsat Imagery and Gis

Hoque, Roxana; Nakayama, Daichi; Matsuyama, Hiroshi; Matsumoto, Jun

doi:10.1142/9789812838124_0019

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“…In 2004, significant precipitation was observed from May to September. Heavy rainfalls were observed at the upper reach catchment in India at Cherrapunji and in the northeast region in Bangladesh (Hoque et al 2008). …”

Section: Annual Summer Monsoon Rainfall Anomaly Maps From 2000 To 2005mentioning

confidence: 99%

Flood monitoring, mapping and assessing capabilities using RADARSAT remote sensing, GIS and ground data for Bangladesh

et al. 2010

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Remote sensing is the most practical method available to managers of floodprone areas for quantifying and mapping flood impacts. This study explored large inundation areas in the Maghna River Basin, around the northeastern Bangladesh, as determined from passive sensor LANDSAT data and the cloud-penetrating capabilities of the active sensors of the remote imaging microwave RADARSAT. This study also used passive sensor LANDSAT wet and dry images for the year 2000. Spatial resolution was 30 m by 30 m for comparisons of the inundation area with RADARSAT images. RA-DARSAT images with spatial resolution of 50 m by 50 m were used for frequency analysis of floods from 2000 to 2004. Time series images for 2004 were also used. RADARSAT remote sensing data, GIS data, and ground data were used for the purpose of flood monitoring, mapping and assessing. A supervised classification technique was used for this processing. They were processed for creating a maximum water extent map and for estimating inundation areas. The results of this study indicated that the maximum extent of the inundation area as estimated using RADARSAT satellite imaging was about 29, 900.72 km 2 in 2004, which corresponded well with the heavy rainfall around northeast region, as seen at the Bhairab Bazar station and with the highest water level of the GangesBrahmaputra-Meghna (GBM) Rivers. A composite of 5 years of RADARSAT inundation maps from 2000 to 2004, GIS data, and damage data, was used to create unique flood hazard maps. Using the damage data for 2004 and the GIS data, a set of damage maps was also created. These maps are expected to be useful for future planning and flood disaster management. Thus, it has been demonstrated that RADARSAT imaging data acquired over the Bangladesh have the ability to precisely assess and clarify inundation areas allowing for successful flood monitoring, mapping and disaster management.

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Section: Annual Summer Monsoon Rainfall Anomaly Maps From 2000 To 2005mentioning

confidence: 99%

Flood monitoring, mapping and assessing capabilities using RADARSAT remote sensing, GIS and ground data for Bangladesh

et al. 2010

Self Cite

View full text Add to dashboard Cite

show abstract

Monitoring the 2004 Flood in the Meghna River Basin in Bangladesh Using Ground Data, Radarsat Imagery and Gis

Cited by 1 publication

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Flood monitoring, mapping and assessing capabilities using RADARSAT remote sensing, GIS and ground data for Bangladesh

Flood monitoring, mapping and assessing capabilities using RADARSAT remote sensing, GIS and ground data for Bangladesh

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