Advertisement

M2 Tidal Current Estimation from One-day Observation Data off the Western and Southern Coasts of Korea

  • Seok Lee
  • Kyung-Hee OhEmail author
  • Sung-Tae Jang
  • Hak Yoel You
  • Joonsung Park
  • Kyu-Min Song
Article
  • 18 Downloads

Abstract

A practical method to estimate the M2 tidal current is proposed based on one-day current observations. In this method, the semi-diurnal constituent, composed of several constituents within the semi-diurnal frequency band that cannot be resolved from one-day observations, is corrected to the M2 constituent using the amplitude ratio and phase difference between each constituent. The dominant M2 constituent is accurately estimated from the semi-diurnal constituents. However, this method is not always successful for application to diurnal constituents that are much weaker than the M2 constituent. The accuracy of the method depends on the signal-to-noise ratio and the time of observation. Observations conducted during the spring tide period are highly recommended to reduce calculation error. This method was applied along the western and southern coasts of Korea, where the semi-diurnal tidal current is the most predominant component of water circulation. In this study, six major constituents (M2, S2, N2, K2, O2, and 2N2) that are dominant in the semi-diurnal frequency are used for correction of the M2 tidal current. Correction coefficients for S2 and N2 used were the average values from 122 sets of one-month current observations, which have a relatively uniform spatial distribution in the study area. For correction coefficients of K2, v2, and 2N2, we used wellknown constant values determined from the relationships among astronomical forcing factors. The M2 tidal currents after correction are generally well matched to those calculated with the numerical model. The discrepancy between results is mainly due to the complex bathymetry and coastline in the study area, which cannot be fully resolved with a numerical model. A spatial distribution map of the M2 tidal current based on observations in this area is presented for the first time. The method proposed in this study can be used for planning efficient observation of tidal currents.

Keywords

M2 tidal currents semi-diurnal tidal current correction method one-day current observations western and southern coasts of Korea 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Bell C, Vassie JM, Woodworth PL (1999) POL/PSMSL tidal analysis software kit 2000 (Task-2000). Permanent service for mean sea level, CCMS proudman oceanographic laboratory, Bidston Observatory, Birkenhead, 21 pGoogle Scholar
  2. Blumberg AF, Mellor GL (1987) A description of three-dimensional coastal ocean circulation model. In: Heaps NS (ed) Threedimensional coastal ocean models. American Geophysical Union, Wisconsin, pp 1–16Google Scholar
  3. Choi BH (1980) A tidal model of the Yellow Sea and Eastern China Sea. KORDI, BSPI 00019(3)-36-2, 72 pGoogle Scholar
  4. Choi BH, Yuk JH, Kim KO (2016) Integral tide-surge-wave model of the Yellow Sea for understanding local sediment transport. J Coastal Res 75:208–212CrossRefGoogle Scholar
  5. Emery WJ, Thomson RE (1998) Data analysis methods in physical oceanography. Elsevier, Amsterdam, 634 pGoogle Scholar
  6. Foreman MGG, Cherniawsky JY, Ballantyne VA (2009) Versatile harmonic tidal analysis: improvements and applications. J Atmos Ocean Tech 26:806–817. doi:10.1175/2008JTECHO615.1CrossRefGoogle Scholar
  7. Godin G (1972) The analysis of tides. University of Toronto Press, Toronto, 264 pGoogle Scholar
  8. Hsueh Y (1988) Recent current observations in the Eastern Yellow Sea. J Geophys Res 93(C6):6875–6884CrossRefGoogle Scholar
  9. Kang SK, Lee SR, Lie HJ (1998) Changes in tidal characteristics as a result of the construction of sea-dike/sea-walls in the Mokpo coastal zone in Korea. Estuar Coast Shelf S 48(4): 429–438CrossRefGoogle Scholar
  10. KHOA (2012) Thematic maps of ocean science in Korea. Korea Hydrographic and Oceanographic Administration, Busan, 115 pGoogle Scholar
  11. Lee S, Lie HJ, Song KM, Cho CH, Lim EP (2008) Tidal modification and its effect on sluice-gate outflow after completion of the Saemangeum Dike, South Korea. J Oceanogr 64:763–776CrossRefGoogle Scholar
  12. Lee S, Lie HJ, Cho CH, Kang SK, Teague WJ, Chang KI, Song KM, Oh KH (2011) Vertical structure of the M2 tidal current in the Yellow Sea. Ocean Sci J 46(2):73–84. doi:10.1007/s12601-011-0007-xCrossRefGoogle Scholar
  13. Lee SH, Beardsley RC (1999) Influence of stratification on residual tidal currents in the Yellow Sea. J Geophys Res 104(C7): 15679–15701. doi:10.1029/1999JC900108CrossRefGoogle Scholar
  14. Lie HJ (1989) Tidal fronts in the southern Hwanghae (Yellow Sea). Cont Shelf Res 9:527–546CrossRefGoogle Scholar
  15. Lie HJ, Lee S, Cho CH (2002) Computation methods of major tidal currents from satellite-tracked drifter positions, with application to the Yellow and East China Sea. J Geophy Res 107(C1):3003. doi:10.1029/2001JC000898CrossRefGoogle Scholar
  16. Lu X, Qiao F, Xia C, Wang G, Yuan Y (2010) Upwelling and surface cold patches in the Yellow Sea in summer: effects of tidal mixing on the vertical circulation. Cont Shelf Res 30:620–632CrossRefGoogle Scholar
  17. Moon JH, Hirose N, Yoon JH (2009) Comparison of wind and tidal contributions to seasonal circulation of the Yellow Sea. J Geophys Res 114:C08016. doi:10.1029/2009JC005314CrossRefGoogle Scholar
  18. Pugh DT (1987) Tides, surges and mean sea level. Bath Press, Avon, 472 pGoogle Scholar
  19. Pugh DT, Woodworth P (2014) Sea-level science: understanding tides, surges, tsunamis and mean sea level changes. Cambridge University Press, Cambridge, 395 pCrossRefGoogle Scholar
  20. Teague WJ, Perkins HT, Hallock ZR, Jacobs GA (1998) Current and tide observations in the southern Yellow Sea. J Geophy Res 103:27783–27793CrossRefGoogle Scholar

Copyright information

© Korea Institute of Ocean Science & Technology (KIOST) and the Korean Society of Oceanography (KSO) and Springer Nature B.V. 2018

Authors and Affiliations

  • Seok Lee
    • 1
  • Kyung-Hee Oh
    • 1
    Email author
  • Sung-Tae Jang
    • 2
  • Hak Yoel You
    • 3
  • Joonsung Park
    • 1
  • Kyu-Min Song
    • 1
  1. 1.Ocean Circulation and Climate Research CenterKIOSTBusanKorea
  2. 2.GeoSystem Research CorporationGunpoKorea
  3. 3.Korea Hydrographic and Oceanographic AgencyBusanKorea

Personalised recommendations