Browse > Article

Estimation of Tidal Residual Flow and Its Variability in Kyunggi Bay of Korea  

Kim, Chang-S. (Marine Environment & Pollution Prevention Research)
Lim, H.S. (Marine Environment & Pollution Prevention Research)
Kim, Jin-Ah (Marine Environment & Pollution Prevention Research)
Kim, Seon-Jeong (Climate Change & Coastal Disaster Research Depart. KORDI)
Park, K.S. (Climate Change & Coastal Disaster Research Depart. KORDI)
Jung, K.T. (Marine Environment & Pollution Prevention Research)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.22, no.6, 2010 , pp. 353-360 More about this Journal
Abstract
The Kyunggi Bay in mid-west of Korea is a relatively large estuarine system that connects the Han River system with Yellow Sea. Due to macro-tidal range of more than 8 m, the urban estuary shows deep tidal channels and wide tidal flats. Since last 30 years, the coastal development is undergoing, yielding noticeable change in environment. Particularly the tidal flat dynamics are generally accepted as being related with tidal residual flows in this area (Kim et al., 2009). We have estimated the annual variation and vertical structure of residual currents with one-year long observed flows in two major tidal channels of Kyunggi Bay. The moving average method and tidal current harmonic analysis yield nearly the same results on residual flow. The residual flow in Jangbong channel ranges from 20 cm/s in summer to 30 cm/s in winter. It is noticeable that the residual flow in Jangbong channel is flood dominant throughout the year, while the flow in Seokmo channel is ebb-dominant residual flow with current speed range of 20-40 cm/s. Due to the baroclinic response of relatively shallow estuary, significant reduction of energy in bottom layers have been observed, indicating the importance of residual circulation to the tidal flat behavior.
Keywords
Tidal residual flow; Kyunggi Bay; Seokmo-Jangbong channel; Moving Average; Tidal Current Harmonic Analysis;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Lee, J.C. and Kim, C.S. (2001). Tide computation in the northeast Asian Sea by blending Topex/Poseidon altimetry data. Journal of Korean Society of Oceanography, 6, 1-12 (abstract in English).
2 Murphy, P.L. and Valle-Levinson, A. (2008). Tidal and residual circulation in the St. Andrew Bay system, Florida. Continental Shelf Research, 28, 2678-2688.   DOI   ScienceOn
3 Yanagi, T., Manabu, M., Nomura, M. and Furukawa, K. (2003). Spring-neap tidal variations of residual flow in Tokyo Bay, Japan. Continental Shelf Research, 23, 1087-1097.   DOI   ScienceOn
4 Kim, C.S. and Lim, H.S. (2007). Safety criteria on water depth, offshore distance and dredging volume in sand mining operation in Kyunggi Bay, Korea. Journal of Coastal Research, SI50, 507-510.
5 Kim, C.S. and Lim, H.S. (2009). Sediment dispersal and deposition due to sand mining in coastal waters of Korea. Continental Shelf Research, 29(1), 194-204.   DOI   ScienceOn
6 Kim, C. S., Lim, H.S., Kim, J.A. and Kim, S.J. (2009). Residual flow and its implication on macro-tidal flats in Kyunggi Bay Estuary of Korea. Journal of Coastal Research, SI 56, 976-980.
7 Kim, C.S., Lim, H.S., Yoon, J.J. and Qiao, F. (2004). Numerical simulation of hydrodynamics and water properties in the Yellow Sea. J. Kor. Soc. Oceanogr., vol 39(1), 72-95.   과학기술학회마을
8 Kreeke, J. van de (1992). Residual flow in Naples Bay and irs effect on constituent concentration, constituent flux and residence time. Dynamics and exchanges in estuaries and the coastal zone (D. Prandle, Ed.), AGU, 117-133.
9 Arfken, G. (1968). Mathematical methods for physicists. Academic Press, New York, 704.
10 한국해양연구원 (2008). 하구역 관리 및 기능회복 기술개발. 연구보고서 BSPE08101-2028-7, 711.
11 Elias, E.P. and Stive, M.J.F. (2005). The effect of stratification on the residual flow in a mixed-energy tide. Proceedings of Coastal Dynamics 2005, doi:10.1061/40855109.
12 한국환경정책연구원 (2005). 지속가능한 하구역 관리 방안 II. 연구총서 05-21-03, 457.