Journal of the Korean Society of Marine Environment & Safety (해양환경안전학회지)

The Korean Society of Marine Environment and safety (해양환경안전학회)
권호 표지
DOI QR코드

DOI QR Code

Temporal and Spatial Variations in Sea Surface Temperature Around Boryeong off the West Coast of Korea From 2011-2012

2011-2012년 서해 보령연안 수온의 시공간적 변동

  • 추효상 (전남대학교 해양기술학부) ;
  • 윤은찬 (한국해양수산연구원)
  • Received : 2017.05.17
  • Accepted : 2017.08.28
  • Published : 2017.08.31
Download PDF
⟨ Previous Next ⟩

Abstract

Temporal and spatial variations in surface water temperature were studied using data from temperature monitoring buoys deployed at 47 stations around Boryeong from 2011-2012 off the west coast of Korea. Temperature fluctuations are predominant at diurnal and semidiurnal periods for all seasons, and their amplitudes are large in spring and summer but small in autumn. The maximum annual change in air temperature takes place on August 2nd and August 22th for water temperature, which means the phase for air temperature precedes water temperature by 20 days. The diurnal period of water temperature fluctuation is predominant around Daecheon and Muchangpo Harbors, with the semidiurnal period around Wonsan Island, and the shallow water constituent period on the estuary around Daecheon River. On the whole, air and water temperatures fluctuate with wind. Spectral analyses of temperature records show significant peaks at the 0.5, 1 and 15 day marks with 7-10 day periods of predominant fluctuations. Cross-correlation analyses for the temperature fluctuation show that the waters around Boryeong can be classified into four areas: a mixed water zone around the southeast side of Wonsan Island, an off-shore area to the west, an off-shore area to the south and a coastal area along the shore from Song Island to Muchangpo Harbor.

2011~2012년 보령연안 수온의 시공간적 변동특성을 장기 연속수온관측 자료를 이용하여 분석하였다. 수온은 반일 또는 일일의 단주기 변동이 전 계절에 탁월하고 그 진폭은 하계와 춘계에 크고 추계에 작다. 수온과 기온의 연변동 진폭은 기온 $12.9^{\circ}C$, 수온 $10.9^{\circ}C$로 기온이 더 크며, 연변동 최고위상은 기온 8월 2일, 수온 8월 22일로 기온이 20일 앞선다. 수온의 연변동 진폭은 원산도와 대천항 연안에서 가장 크다. 수온변동 중 일일주기는 대천항과 무창포항, 반일주기는 원산도 주변 협수로에서 탁월하며, 대천천 하구는 천해조 비율이 높다. 표층수온과 기온은 대체로 풍향 변동에 따라 변동한다. 하천수가 방출되면 수온은 상승 후 하강 또는 하강 후 상승한다. 수온 탁월주기는 0.5일, 1.0일, 15일 주기와 7~10일 전후이다. 수온변동특성에 따라 해역을 분류하면 (1)원산도 남동연안의 혼합수역 (2)삽시도~용도, 장고도~삽시도, 장고도~안면도 남쪽의 서쪽 외해수역 (3)용도~독산의 남쪽 외해수역 (4)송도~대천항~무창포항의 조간대 연안수역으로 구분된다.

Keywords

References

  1. Baines, P. G.(1986), Internal tides, internal waves and near-inertial motions, In: Baroclinic processes on continental shelves, edited by C.N.K. Mooers, American Geophysical Union, Washington, D.C., pp. 19-31.
  2. Cho, H. Y., K. H. Lee, K. J. Cho and J. S. Kim(2007), Correlation and hysteresis analysis between air and water temperatures in the coastal zone - Masan Bay, Journal of Korean Society of Coastal and Ocean Engineers, 19(3), pp. 213-221
  3. Choi, H. Y., S. H. Lee and I. S. Oh(1998), Quantitative analysis of the thermal front in the mid-eastern coastal area of the Yellow Sea, J. Oceanol. Soc. Korea, The Sea 3(1), pp. 1-8.
  4. Choi, H. Y., S. H. Lee and K. W. Yoo(1999), Salinity distribution in the mid-eastern Yellow Sea during the high discharge from the Keum river weir, J. Oceanol. Soc. Korea, The Sea 4(1), pp. 1-9.
  5. Choi, Y. H., Y. J. Ro and H. K. Jun(2002a), Variation of seawater temperature in the coastal waters off the Dangjin Power Plant, Asan Bay, Korea, The Sea, Journal of the Korean Society of Oceanography, 7(2), pp. 43-50.
  6. Choi, Y. K., W. S. Yang and J. Y. Jeong(2002b), Nutrient front relating to the hydrography in the outflow region of the Keum river, J. Korean Fish. Soc., 35(3), pp. 289-296.
  7. Choo, H. S. and E. C. Yoon(2015), Temporal and spatial variations of sea surface temperature in Jinju Bay in the South Coast of Korea, Journal of the Korean Society of Marine Environment & Safety, 21(4), pp. 315-326. https://doi.org/10.7837/kosomes.2015.21.4.315
  8. Choo, H. S. and K. D. Cho(1984), The Structure of tidal front in Eastern Yellow Sea in summer of 1982, Bull. Korean Fish. Soc. Vol. 17(2), pp. 83-91.
  9. Foreman, M. G. G.(1978), Manual for tidal currents analysis and prediction, Pacific Marine Science Report 78-6; Institute of Ocean Science: Patricia Bay, Sydney, BC, Canada, October 2004.
  10. Friedrichs, C. T. and D. G. Aubrey(1988), Nonlinear tidal distortion in shallow mixed estuaries: A synthesis, Estuarine, Coastal Shelf Science, Elsevier, 26(5), pp. 521-545.
  11. Go, W. J., S. W. Kim and D, S. Kim(2006), A relationship between oceanic conditions and meteorological factors in the western sea of Korea in winter, Journal of the Korean Society of Marine Environment & Safety, 12(1), pp. 23-32.
  12. Ippen, A. T. and D. R. F. Harleman(1966), Tidal dynamics in estuaries, Estuary and Coastline Hydrodynamics, Edited by Ippen, A. T., McGraw-Hill, New York, pp. 493-545.
  13. Jang, L. H., Y. Q. Kang and Y. S. Suh(2000), Relationship between sea surface temperature and air temperature variation depend on time scale at coastal stations in Korea, J. of the Korean Environmental Sciences Society, 9(4), pp. 303-309.
  14. Jung, K. Y., Y. J. Ro and B. J, Kim(2013), Tidal and sub-tidal current characteristics in the central part of Chunsu Bay, Yellow Sea, Korea during the summer season, 'The Sea' Journal of the Korean Society of Oceanography, 18(2), pp. 53-64.
  15. Kang, C. Y.(2013), The Characteristic of internal waves observed in the tidal fronts near Ocheong-Do in the eastern Yellow Sea, Master Thesis, Graduate school of Kunsan Nat. Univ. pp. 60-61.
  16. Kang, J. H. and S. R. Moon(2001), Tidal propagation characteristics in the estuary which shows significant shallow tides, Journal of the Korean Society of Coastal and Ocean Engineers, Vol. 13(1), pp. 56-60.
  17. Kang, Y. Q.(1983), On the temperature differences across ground and sea surfaces in Korea, J. of Korean. Met. Soc., 19(2), pp. 2088-2095.
  18. Kang, Y. Q.(2000), Warming trend of coastal waters of Korea during recent 60 years (1936-1995), J. Fish. Sci. Tech., 3(3), pp. 173-179.
  19. Kang, Y. Q. and B. D. Lee(1984), Year to Year Fluctuations of seasonal variation of surface temperature in the Korea Strait, Bull. Korean Fish. Soc. Vol. 17(6), pp. 557-565.
  20. KHOA(2015), Korea Hydrographic and Oceanographic Agency, Technical Reports, 2015, pp. 190-202.
  21. Lee, C. I., J. H. Lee and D. S. Kim(2007), Effects of Meteorological Factors on Water Temperature, Salinity in the West Sea of Korea, Journal of the Korean Society of Marine Environment & Safety, 13(1), pp. 29-37.
  22. Lee, H. J., C. W. Shin and Y. H. Seung(1992), Internal tidal oscillations of temperature off Jukbyun on the east coast of Korea, J. Oceanol. Soc. Korea, 27(3), pp. 228-236.
  23. Lee, J. K., C. Park, D. B. Lee and S. W. Lee(2012), Variations in plankton assemblage in a semi-closed Chunsu Bay, Korea, 'The Sea', Journal of the Korean Society of Oceanography, 17(2), pp. 95-111.
  24. Lee, M. O., I. H. Park and B. K. Kim(2008), The characteristics of tidal currents in Chunsu Bay around Anmyeondo, Journal of Korean Island, Vol. 20(2), pp. 145-162.
  25. Lee, S. H., H. G. Kwon, H. Y. Choi, J. S. Yang and J. Y. Choi(1999), Physical environment changes in the Keum river estuary by the dyke gate operation: II. salinity structure and estuary type, J. Oceanol. Soc. Korea, The Sea 4(4), pp. 255-265.
  26. Lim, D. I., M. R. Kang, P. G. Jang, S. Y. Kim, H. S. Jung, Y. S. Kang and Y. S. Kang(2008), Water quality characteristics along mid-western coastal area of Korea, Ocean and Polar Research, 30(4), pp. 379-399. https://doi.org/10.4217/OPR.2008.30.4.379
  27. Lim, K. S.(1991), Internal tides in an axially symmetric basin, J. Oceanol, Soc. Korea, 26, pp. 133-143.
  28. Matsuyama, M.(1985), Internal tides in Uchiura Bay: subsurface temperature observations near the bay head, J. Oceanogr. Soc. Japan, 41, pp. 135-144. https://doi.org/10.1007/BF02111113
  29. Mcclimans, T. A.(1988), Estuarine fronts and river plumes, -Physical Processes in Estuaries- edited by Dronkers J. and W. V. Leussen, Springer-Verlag, pp. 55-69.
  30. Nam, S. H.(2006), Near-inertial current variability off the east coast of Korea, Ph.D. Dissertation, Graduate school of Seoul Nat. Univ., pp. 14-21.
  31. NIFS(2000), National Institute of Fisheries Science, Environmental quality in the coastal area of West Sea, Korea (May, 2000), Letters of the Oceanography and Fisheries Resources of the Yellow Sea, 3(3), pp. 9-18.
  32. Park, S. U. and J. K. Kim(2012), Sea water temperature and salinity distributions in the Cheonsu Bay, Proceeding of the autumn meeting, 2012 of Korea Society of Marine Environment & Energy, pp. 251-257.
  33. Pawlowicz, R., B. Beardsley and S. Lentz(2002), Classical tidal harmonic analysis including error estimates in MATLAB using T_TIDE, Computers and Geosciences, 28, pp. 929-937. https://doi.org/10.1016/S0098-3004(02)00013-4
  34. Rory, O. R. Y. Thompson(1983), Low-pass filters to suppress inertial and tidal frequencies, American Meteorological Society, 13, pp. 1077-1083.
  35. Seung, Y. H., J. H. Chung and Y. C. Park(1990), Oceanographic studies related to the tidal front in the mid-Yellow Sea off Korea: Phuysical aspects. J. Oceanol. Soc. Korea, 25, pp. 84-95.
  36. Walters, R. A. and C. Heston(1981), Removing tidal-period variations from time-series data using low-pass digital filters, Journal of physical oceanography, 12, pp. 112-115.
  37. Yang, J. Y., J. S. Lee, I. S. Han, Y. K. Choi and Y. S. Suh(2012), Seawater temperature variation at aquafarms of Wando in the southwest coast of Korea, Journal of the Korean Society of Marine Environment & Safety, 18(6), pp. 514-519. https://doi.org/10.7837/kosomes.2012.18.6.514

Cited by

  1. 서해 보령 연안 연안개량안강망에 어획된 어류의 종조성 및 군집구조 vol.53, pp.5, 2017, https://doi.org/10.5657/kfas.2020.0761
  2. Correlation between water temperature and catch at a set net in Yeosu Bay, Korea vol.24, pp.1, 2017, https://doi.org/10.47853/fas.2021.e5