Year-to-year Variability of the Vertical Temperature Structure in the Youngsan Estuary
2
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
Long-term observations were conducted between 1997 and 2002 to examine the variability of the vertical temperature structure in the Youngsan Estuary, southwest Korea, in summer. The observed hydrographic data revealed that the temperature minimum layer in the middle depth persisted through the entire summer of 2000 but was rarely observed in other years. The variability in the vertical structure might be affected by the air temperature during the previous winter and the density difference between the open sea and the estuary. In 2000, the air temperature in the previous winter was lowest and the horizontal density difference during summer was largest. The large horizontal density difference probably produced more active driving of warm water along the bottom, which would have intruded into the Youngsan Estuary. Furthermore, the cold previous winter would have provided a better condition for maintaining cold temperatures in the middle water layer for a longer period.
Abstract
Long-term observations were conducted between 1997 and 2002 to examine the variability of the vertical temperature structure in the Youngsan Estuary, southwest Korea, in summer. The observed hydrographic data revealed that the temperature minimum layer in the middle depth persisted through the entire summer of 2000 but was rarely observed in other years. The variability in the vertical structure might be affected by the air temperature during the previous winter and the density difference between the open sea and the estuary. In 2000, the air temperature in the previous winter was lowest and the horizontal density difference during summer was largest. The large horizontal density difference probably produced more active driving of warm water along the bottom, which would have intruded into the Youngsan Estuary. Furthermore, the cold previous winter would have provided a better condition for maintaining cold temperatures in the middle water layer for a longer period.
참고문헌 (12)
- Bowden KF, "ote on wind drift in a channel in the presence of tidal currents", Proceedings of the Royal society of London, 219통권 : 219, pp.426~446 (1953)
- Byun DS, "Tidal characteristic adjustment due to dyke and seawall construction in the Mokpo coastal zone, Korea", Estuar Coast Shelf Sci, 59, pp.185~196 (2004)
- Cho YK, "Multi-layer structure in the Youngsan Estuary, Korea", Estuar Coast Shelf Sci, 61, pp.325~329 (2004)
- Dyer KR,, "Intermittency in estuarine mixing. In: Estuarine Variability.", pp.321~339 (1986), Academic Press
- Kang JW, "Changes in tidal characteristics as a result of the construction of sea-dike", sea-walls in the Mokpo coastal zone, 1999, pp.48, 429~438
- Lee SW, "Korean nearshore oceanology", pp.334~ (1992), Jipmoondang
- Lee SW, "Change in tidal height at Mokpo Harbor due to the construction of Youngsan River Estuary Dyke", Korean harbour hydraul, 18, pp.27~37 (1994)
- Lewis RE, "Effect of a tidal barrage on currents and density structure in Tees Estuary. In: Physics of estuaries and coastal seas", pp.33~38 (1998), Balkema, Roterdam
- Lim HS, "Community Structure of the Macrobenthos in the Soft Bottom of Youngsan River Estuary, Korea, 1. Benthic Environment", J Korean Fish Soc, 31(3), pp.330~342 (1998)
- Lim HS, "Community Structure of macrobenthos in the subtidal soft bottom in semi-enclosed Youngsan River Estuarine Bay, southwest coast of Korea", J Korean Fish Soc, 32(3), pp.320~332 (1999)
- Officer CB, "Physical Oceanography of Estuaries (and Associated Coastal Waters)", pp.465~ (1976), Wiley
- Annual report of the management of the Estuary dike, "Rural Development Corporation of Korea", Development Corporation of Korea, ~ (1999)