Abstract
2004년 12월 2일부터 8일까지 한국 남해의 표층 부유물질의 분포를 초겨울의 해황과 관련하여 조사하였다. 쓰시마와 제주도를 잇는 지선을 중심으로 전선이 형성되었으며, 이 전선을 중심으로 한국 남해의 연안수와 외양의 쓰시마난류수로 구분되었다. 연안역은 표층에서 저층까지 거의 균일한 수괴 분포를 보였으며, 외양은 성층이 형성되어 있었다. 그리고 부유물질은 연직혼합된 연안역에서는 5.0-6.5 mg/l였으며, 성층이 형성된 외양역은 4.5-5.0 mg/1의 분포를 나타내었다. 초겨울 한국 남해는 표면 냉각 효과와 바람에 의해서 저층의 부유물질이 충분히 재부유할 수 있는 환경이었음을 나타내고 있었다. 또한 관측 기간동안 비록 조류가 비교적 약한 소조기 이었음에도 불구하고 열플럭스에 의한 냉각효과와 바람에 의한 혼합 효과가 강하여 표층과 저층이 혼합하기에 용이하였음을 나타내었다. 이에 따라 수심이 얕은 연안역에서는 저층 퇴적물의 재부유에 의해서 부유 물질이 증가될 수 있음을 시사하고 있었다. In order to investigate the distribution of suspended particulate matter of the surface water in the South Sea of Korea in early winter, the cruise results during 2 to 8 December 2004 were analyzed in relation to the hydrography. The front was formed along the line connecting between Tsushima and Cheju Islands, which divided the water into two water masses; the coastal water with for temperature and for salinity, and the Tsushima Warm Current Water with high temperature and high salinity. In the coastal water the suspended particulte matter was 5.0-6.5 mg/l, while in the oceanic water suspended particulate matter was 4.5-5.0 mg/l. The coastal water showed higher mixing effects, compared to the oceanic area where vertical stratification was clearly formed. These indicate that the distribution of suspended particulate matter was affected by the stratification or mixing of the water column. Also it is suggested that the mixing effects of sea surface cooling and rind play an important role on the distribution of suspended particulate matter in the South Sea of Korea in winter time.
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