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http://dx.doi.org/10.11108/kagis.2011.14.4.077

Stream Type Classification and 2-Dimensional Hydraulic Characteristics and Bed Change in Anseongcheon Streams and Tributaries  

Lee, Ji-Wan (Dept. of Civil and Environmental System Engineering, Konkuk University)
Lee, Mi-Seon (Dept. of Water Environment Research, National Institute of Environmental Research)
Jung, In-Kyun (Dept. of Civil and Environmental System Engineering, Konkuk University)
Park, Geun-Ae (Civil & Environmental Engineering, University of Washington)
Kim, Seong-Joon (Dept. of Civil and Environmental System Engineering, Konkuk University)
Publication Information
Journal of the Korean Association of Geographic Information Studies / v.14, no.4, 2011 , pp. 77-91 More about this Journal
Abstract
This study tries to find a streambed scouring and sedimentation characteristics through the Rosgen(1994)'s stream classification system while experiencing several flood events. The Jinwee and Osan streams, the tributaries of Anseongcheon were selected. The streams showed type C or type E. By the classification results, two Type C tributaries one Type C stream and one Type E tributary were selected. For the four selected stream reaches, the analysis of streambed change was implemented by using numerical model CCHE2D (Center for Computational Hydroscience and Engineering). To prepare the inlet boundary conditions of each stream, the WMS (Watershed Modeling System) HEC-1 was used and the streamflows of 50, 80, and 100-year return period were generated and the outlet boundary was set to an open boundary condition. The simulation results showed that when the flood pulse periodically the streambed changes also appears regularly. The results can be used to acquire the basic data for stream restoration.
Keywords
River Classification; Numerical Analysis; CCHE2D; Hydraulic Characteristics; Streambed Changes;
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