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http://dx.doi.org/10.3796/KSFOT.2021.57.3.214

Characteristics of tidal current and tidal induced residual current in the channel between Geumo Island and An Island in the southern waters of Korea  

CHOO, Hyo-Sang (Department of Ocean Integrated Science, Chonnam National University)
Publication Information
Journal of the Korean Society of Fisheries and Ocean Technology / v.57, no.3, 2021 , pp. 214-227 More about this Journal
Abstract
The distribution of tidal current and tidal induced residual current, topographical eddies and tidal residual circulation in the waters surrounding the Geumo Island-An Island channel were identified through numerical model experiments and vorticity balance analysis. Tidal current flows southwest at flood and northeast at ebb along the channel. The maximum flow velocity was about 100-150 cm/s in neap and spring tide. During the flood current in the neap tide, clockwise small eddies were formed in the waters west of Sobu Island and southwest of Daebu Island, and a more grown eddy was formed in the southern waters of Geumo Island in the spring tide. A small eddy that existed in the western waters of Chosam Island during the ebb in neap tide appeared to be a more grown topographical eddy in the northeastern waters of Chosam Island in spring tide. Tidal ellipses were generally reciprocating and were almost straight in the channel. These topographical eddies are made of vorticity caused by coastal friction when tidal flow passes through the channel. They gradually grow in size as they are transported and accumulated at the end of the channel. When the current becomes stronger, the topographic eddies move, settle, spread to the outer sea and grow as a counterclockwise or clockwise tidal residual circulation depending on the surrounding terrain. In the waters surrounding the channel, there were counterclockwise small tidal residual circulations in the central part of the channel, clockwise from the northeast end of the channel to northwest inner bay of An Island, and clockwise and counterclockwise between Daebu Island and An Island. The circulation flow rate was up to 20-30 cm/s. In the future, it is necessary to conduct an experimental study to understand the growth process of the tidal residual circulation in more detail due to the convergence and divergence of seawater around the channel.
Keywords
The Geumo Island-An Island channel; Numerical model experiments; Tidal current; Tide induced residual current; Topographical eddy;
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1 Yang Z and Wang T. 2013. Tidal residual eddies and their effect on water exchange in Puget Sound. Ocean Dyn, 63, 995-1009. https://doi.org/10.1007/s10236-013-0635-z.   DOI
2 Strang EJ and Fernando HJS. 2001. Vertical mixing and transports through a stratified shear layer. Journal of Physical Oceanography, 31, 2026-2048. https://doi.org/10.1175/1520-0485(2001)031<2026:VMATTA>2.0.CO;2.   DOI
3 Bae SW and Kim DS, 2012. Understanding the flow properties by a numerical modeling in the south sea of Korea. J Korean Soc Mar Environ Saf 18, 295-307. https://doi.org/10.7837/kosomes.2012.18.4.295.   DOI
4 Barton ED. 2001. Island wakes. Nature, 1-8. https://doi.org/10.1006/rwos.2001.0140.   DOI
5 KIOST. 1996. Harmonic constants of Tide around the Korea Peninsula. 88-128.
6 Chen P, Swart HE and Levinson AV. 2013. Role of asymmetric tidal mixing in the subtidal dynamics of narrow estuaries. Journal of Geophysical Research; Oceans 118, 2623-2639. https://doi.org/10.1029/2010JC006137.   DOI
7 Caldeira RMA, Groom S, Miller P, Pilgrim D and Nezlin NP. 2002. Sea-surface signatures of the island mass effect phenomena around Madeira Island, Northeast Atlantic. Remote Sens Environ 80, 336-360. https://doi.org/10.1016/S0034-4257(01)00316-9.   DOI
8 FIRA. 2021. FIRA Promotional Video. Retrieved from https://www.fira.or.kr/fira/fira_010301_1.jsp?mode=list&board_no=43&pager.offset=0. Acessed August 2021.
9 Friedrichs CT and Aubrey DG. 1988. Nonlinear tidal distortion in shallow well mixed estuaries: A synthesis, Estuarine. Coastal Shelf Science, Elsevier 26, 521-545. https://doi.org/10.1016/0272-7714(88)90082-0.   DOI
10 Choo HS. 2019a. Acoustic doppler current profiler bottom tracking survey of flow structures around Geumo archipelago in the southern waters of Korea. J Korean Soc Mar Environ Saf 25, 589-600. https://doi.org/10.7837/kosomes.2019.25.5.589.   DOI
11 Ippen AT and Harleman DRF. 1966. Tidal dynamics in estuaries, Estuary and Coastline Hydrodynamics. Edited by Ippen, AT, McGraw-Hill, New York, 493-545.
12 Han KH and Oh YS. 2007. Fluctuation in abundance and species composition of fishes by bottom otter trawl in coastal waters of Geumodo, Yeosu. J Korean Soc Fish Ocean Technol 43, 251-260. https://doi.org/10.3796/KSFT.2007.43.4.251.   DOI
13 Takeoka E and Higuchi H. 1982. Tidal exchange at a small bay due to topographical eddies. Bulletin on Costal Oceanography 19, 175-182.
14 Seo HS and Kim DS, 2014. Numerical experiment on the drift diffusion of harmful algal bloom. J Korean Soc Mar Environ Saf 20, 335-344. https://doi.org/10.7837/kosomes.2014.20.4.335.   DOI
15 Sugimoto T. 1975. Effect of boundary geometries on tidal currents and tidal mixing. J Ocenogr Soc Japan 31, 1-14.   DOI
16 Sugimoto T, Ueshima H, Yasuda H, Yanagi T and Higuchi H. 1976. On the formation processes of the tidal residual circulation. Reports of the Government Industrial Research Institute, Chugoku, No. 1, 35-50.
17 Xue P, Chen C, Ding P, Beardsley RC, Lin H, Ge J and Kong Y. 2009. Saltwater intrusion into the Changjiang River: a model-guided mechanism study. J Geophys Res 114, C02006. https://doi.org/10.1029/2008JC004831.   DOI
18 Choo HS. 2002. The variations of oceanic conditions and the distributions of eggs and larvae of anchovy in the southern sea of Korea in summer. J Korean Fish Soc 35, 77-85. https://doi.org/10.5657/kfas.2002.35.1.077.   DOI
19 Chavanne C, Flament P, Lumpkin R, Dousset B and Bentamy A. 2002. Scatterometer observations of wind variations induced by oceanic islands: implications of wind-driven ocean circulation. Can J Remote Sens 28, 466-474. https://doi.org/10.5589/m02-047.   DOI
20 Choi HY, 2001. Oceanographic condition of the coastal area between Narodo Is. and Solido Is. in the southern sea of Korea and its relation to the disappearance of red-tide observed in summer 1998. Sea J Korean Soc Oceanogr 6, 49-62.
21 Choo HS. 2019b. Characteristics of tidal current and mean flow at the west channel of Yeoja bay in the south sea of Korea. J Korean Fish Soc 55, 252-263. https://doi.org/10.3796/KSFOT.2019.55.3.252.   DOI
22 Choo HS and Kim DS. 1998. The Effect of variations in the Tsushima warm currents on the egg and larval transport of anchovy in the southern sea of Korea. J Korean Fish Soc 31, 226-244.
23 Choo HS and Kim DS. 2013. Tide and tidal currents around the archipelago on the southwestern waters of the South Sea, Korea. J Korean Soc Mar Environ Saf 19, 582-596. https://doi.org/10.7837/kosomes.2013.19.6.582.   DOI
24 Falconer RA. 1986. A two-dimensional mathematical model study of the nitrate levels in an inland natural basin. International Conference on Water Quality Modeling in the Inland Natural Environment, Bournemouth, England, 10-13 June, 325-344.
25 Falconer RA and Chen Y. 1991. An improved representation of flooding and drying and wind stress effects in a 2-D numerical model. Proceedings of the Institution of Civil Engineers, Part 2, Research and Theory, Vol, 91, 659-678.   DOI
26 Loder JW. 1980. Topographic rectification of tidal currents on the sides of Georges Bank. J Phys Oceanogr, 10, 1399-1416.   DOI
27 Hwang DJ, Shin HH and Kim DS. 1999. Distribution of fish by echo sounder and environment of oceanography in southern sea of Korea. J Korean Soc Fish Ocean Technol 35, 170-177.
28 KHOA, 1977. Results of tidal current observation in the Yeosu Hang approaches, Technical Reports 1977, Pub. No. 1101, 91-123.
29 Kim JG, 2010. Spatial and temporal distribution of benthic polychaetous community near the Geumo-Sori Islands, southern coast of Korea. Graduate School Chonnam National University, 68-72.
30 Maddok L and Pingree RD. 1978. Numerical simulation of the Portland tidal eddies. Estuarine Coastal Mar. Sci., 6, 353-363. https://doi.org/10.1016/0302-3524(78)90127-5.   DOI
31 MOF. 2003. Study on the foundation-laying of Jeonnam archipelago marine ranching program in Korea. BSPM 176-00-1531-3, 81-100.
32 Nakada H. and Hujiwara T. 1985. Formation of topographical eddies and fishing grounds near Akeishi Strait. Journal of Suisan Doboku 21, 67-74.
33 NIFS. 1978. Technical Report No. 41, 89-92.
34 NIFS. 1997. Harmful algal blooms in the southern coastal waters of Korea in 1995, National Fisheries Research & Development Institute, 280.
35 NIFS. 1998. Recent red tides in Korean coastal waters, National Fisheries Research & Development Institute, 292.
36 Choo HS, Kim DS and Ahn SH. 2008. Management after installation of artificial reefs around Yeosu sea -Present condition and development scheme-. Bull Fish Sci Inst Chonnam Nat'l Univ 17, 77-81.
37 Maruyasu T, Onishi S and Nishimura T. 1981. Study of tidal vortices at the Naruto Strait through remote sensing. Bull. Remote Sensing Lab., No.1, Science Univ. of Tokyo, 142.