Assessing channel changes of the Ganges-Padma River system in Bangladesh using Landsat and hydrological data
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- 作者：Ashraf Dewana ; a.dewan@curtin.edu.au" class="auth_mail" title="E-mail the corresponding author ; Robert Cornera ; R.Corner@curtin.edu.au" class="auth_mail" title="E-mail the corresponding author ; Ashty Saleema ; ashty.saleem@postgrad.curtin.edu.au" class="auth_mail" title="E-mail the corresponding author ; Md Masudur Rahmanb ; masud_ra0171@yahoo.com" class="auth_mail" title="E-mail the corresponding author ; Md Rafiqul Haiderc ; cslraju@yahoo.com" class="auth_mail" title="E-mail the corresponding author ; Md Mostafizur Rahmand ; mdmorahman@gmail.com" class="auth_mail" title="E-mail the corresponding author ; Maminul H. Sarkerd ; msarker@cegisbd.com" class="auth_mail" title="E-mail the corresponding author
- 关键词：Landsat ; Bankline movement ; Erosion and accretion ; Channel pattern ; Ganges-Padma system ; Floods ; Geospatial techniques
- 刊名：Geomorphology
- 出版年：2017
- 出版时间：1 January 2017
- 年：2017
- 卷：276
- 期：Complete
- 页码：257-279
- 全文大小：3256 K
文摘
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A thirty eight year study of channel characteristics of a regulated and an unregulated river.
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Floods of large magnitude drive bank movement, erosion and deposition pattern of the regulated system.
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Annual average discharge drives erosion and deposition of the unregulated river.
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Relationship between bank curvature and erosion and accretion of both rivers contradicts with established meander theory.
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Entrapment of sediment at a large barrage accounts for anomalous downstream behaviour on the regulated river.