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http://dx.doi.org/10.3741/JKWRA.2008.41.4.395

Lateral Migration Features of the Alluvial Channels in Hapyeong Intake Station, Nakdong River  

Jang, Chang-Lae (Korea Institute of Water and Environment, Korea Water Resources Corporation)
Lee, Gang-Man (Korea Institute of Water and Environment, Korea Water Resources Corporation)
Kim, Gye-Hyun (Deft. of Geoinformatic Engrg., Inha Univ.)
Publication Information
Journal of Korea Water Resources Association / v.41, no.4, 2008 , pp. 395-404 More about this Journal
Abstract
It is important to understand the complex, various migration features of the alluvial channels for river engineering. In this study, the morphological changes and migration features of alluvial channels were investigated by analyzing the aerial photographs of active channels between 1972 and 2004 in Hapyeong Intake Station, Nakdong river. The lower channels were migrated from left bank to right bank and showed the features of braided channel in 2004. The instability of lower channels was increased due to the increased channel slope and width. The sinuosity of lower channels was decreased with time. As time increased, the increasing rate of lower channel and lateral migration rate were decreased. As a result of meso-scale regime analysis by using bankfull discharge, multiple row bars were developed, and suspended sediment load was governed in the flow as a sand bed channel.
Keywords
Alluvial channel; channel migration; sinuosity; Hapyeong Intake;
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