Abstract
Channel morphology adjusts in the different time-scale — long, medium and short — to changing water and sediment discharges (Richards, 1982). Long-term influences — climate, hydrologic and gradual tectonics — cause gradual, progressive adjustment of the alluvial channels. Medium-term adjustments are often caused by human activities. Natural hazards like earthquakes and volcanic eruptions are also responsible for medium-term adjustment. Several studies have assessed the medium-term adjustment due to human activities and natural hazards (Kondolf et al., 2002; Yang et al., 2002; Goswami et al., 1999; Simon, 1989; Burnett and Schumm, 1983; Galay, 1983). In these cases, the change in sediment transport is the triggering agent. On the other hand, short-term channel adjustment is caused by individual extreme events, like a catastrophic flood.
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Sarker, M.H. (2004). Impact of Upstream Human Interventions on the Morphology of the Ganges-Gorai System. In: Mirza, M.M.Q. (eds) The Ganges Water Diversion: Environmental Effects and Implications. Water Science and Technology Library, vol 49. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-2792-5_4
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DOI: https://doi.org/10.1007/978-1-4020-2792-5_4
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