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http://dx.doi.org/10.3741/JKWRA.2013.46.5.531

A Study on the Sediment Deposition Height Computation at Gunsan Port Using EFDC  

Lee, Dong Joo (Dept. of Civil Engineering, Kunsan National Univ.)
Park, Young Ki (Dept. of Civil Engineering, Chonbuk National Univ.)
Publication Information
Journal of Korea Water Resources Association / v.46, no.5, 2013 , pp. 531-545 More about this Journal
Abstract
This paper was considered on the applicability of EFDC KUNSAN_SEDTRAN MODEL (2012) to calculate Gunsan Port sediment deposition height efficiently and to use for grasping its aspects quantitatively and providing its prevention measures reasonably based on well-known 3-dimensional EFDC sediment transport module. This model was calibrated and verified with various measured field data of A Report of Hydrological Variation on Kum River Estuary (2004). Due to the model calibration and relevant literature investigation for cohesive sediment parameters, settling velocity (WS), critical deposition stress (TD), reference surface erosion rate (RSE), critical erosion stress (TE) were identified as 2.2E-04m/s, 0.20 $N/m^2$, 0.003 $g/s{\cdot}m^2$, 0.40 $N/m^2$ respectivly on this model. In order to examine the applicability and precision of the model computation, the calculated model data of sediment deposition height at 13 stations for 71 days and suspended-sediment concentration at 2 stations, inner port and outer port for 15 days were compared and analyzed with the measured field data. As a result, the model applicability for sediment deposition height simulation was evaluated as NSE coefficient 0.86 and the precision for suspended-sediment concentration computation was evaluated as time averaged relative error (RE) 23%.
Keywords
Gunsan Port; EFDC; sediment deposition height; settling velocity; critical deposition stress; reference surface erosion rate; critical erosion stress;
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Times Cited By KSCI : 1  (Citation Analysis)
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