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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2004.11
- 수록면
- 209 - 222 (14page)
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초록· 키워드
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Field survey on the spatio-temporal distribution characteristics of organic matters and its origin in the core sediments was carried out monthly at six stations in Gamak bay, the southern Korea from April 2000 to March 2002.
The sedimentary pollution was very serious at the northwestern area, because northwestern area has an excessive supply of organic matters from the aquaculture activity, inflow of life sewage from the land, make a long stay of the materials by topographical characterize of form such as basin and the anoxic conditions in bottom sea water environment by thermocline in summer. The tendency of temporal changes showed in the period of high-water temperature mainly higher than the period of low-water temperature at northwestern and southern entrance areas. On the other hand, central and eastern areas showed mainly higher tendency during the low-water temperature except total sulfide concentrations. Concentration in all items showed rapid decrease vertically according to its depth in the northwestern area, while higher concentration showed at 2 to 6㎝ layer rather than at surface sediment in the southern entrance of Gamak bay. In other areas, generally the concentrations was decreased as layer goes deeper but the concentrations of H2S and COD were higher at 2 to 6cm later than surface sediment.
The results showed that the origin of organic matters in sediments in Gamak bay was from autochthonous organic matter rather than allouchthonous. However, the formation of autochthonous organic matters were mainly detritus more than living phytoplankton. Also, the detritus were products by artificial activities such as dregs feed and fecal pellets of farm organisms by aquaculture activities rather than dynamic of natural ocean activities.
The sedimentary pollution was very serious at the northwestern area, because northwestern area has an excessive supply of organic matters from the aquaculture activity, inflow of life sewage from the land, make a long stay of the materials by topographical characterize of form such as basin and the anoxic conditions in bottom sea water environment by thermocline in summer. The tendency of temporal changes showed in the period of high-water temperature mainly higher than the period of low-water temperature at northwestern and southern entrance areas. On the other hand, central and eastern areas showed mainly higher tendency during the low-water temperature except total sulfide concentrations. Concentration in all items showed rapid decrease vertically according to its depth in the northwestern area, while higher concentration showed at 2 to 6㎝ layer rather than at surface sediment in the southern entrance of Gamak bay. In other areas, generally the concentrations was decreased as layer goes deeper but the concentrations of H2S and COD were higher at 2 to 6cm later than surface sediment.
The results showed that the origin of organic matters in sediments in Gamak bay was from autochthonous organic matter rather than allouchthonous. However, the formation of autochthonous organic matters were mainly detritus more than living phytoplankton. Also, the detritus were products by artificial activities such as dregs feed and fecal pellets of farm organisms by aquaculture activities rather than dynamic of natural ocean activities.
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