[H-DS12] Advanced Remote Sensing toward Mega-Disaster Response

[HDS12-P03] Long term monitoring of flood damage in the coastal area of Bangladesh

★Invited Papers

*Park Jonggeol¹, Young-Joo Kwak² (1.Tokyo University of Information Sciences, 2.ICHARM-UNESCO)

Keywords:Flood, MODIS, NDWI

The major natural hazards which Bangladesh has to confront regularly include floods, cyclones and accompanying storm surge. Flooding from river waters overflowing the banks, particularly during monsoon, is an annual phenomenon. On average, one-third of the country goes under water every year. In this study, we investigated the flooding area of Bangladesh using time series MOD13A2 data of 15 years. Discriminant analysis using both NDVI and MDWI is more effective than extracting water bodies using existing NDWI only. The flash flood was from the Indian plateau bordering the northern part of Bangladesh to flow from April to May and a wide wetland was formed and the longest flooding period in Bangladesh was revealed as it is as it is the rainy season.