Abstract

Channel changes are extremely predominant in the downstream reach of the Brahmaputra river in Bangladesh. The maximum transverse shift of the channel reaches more than 2km.Image processing of Landsat TM data was applied to survey river channel changes. The year-to-year changes of river channels, erosion areas, deposition areas and bars were clearly visualized by the processing technique. Based on the results, the characteristics of the channel process and an influence of flood magnitudes upon them were examined.

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