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NTIS 바로가기한국수산과학회지 = Korean journal of fisheries and aquatic sciences, v.46 no.6, 2013년, pp.930 - 940
황동운 (국립수산과학원 어장환경과) , 이인석 (국립수산과학원 어장환경과) , 최민규 (국립수산과학원 어장환경과) , 김숙양 (국립수산과학원 어장환경과) , 최희구 (국립수산과학원 어장환경과)
We evaluated contamination with organic matter and trace metals by analyzing grain size, ignition loss (IL), chemical oxygen demand (COD), acid volatile sulfide (AVS), and trace metals (Al, Fe, Cu, Pb, Zn, Cd, Ni, Cr, Mn, Hg, and As) in surface sediments at 28 stations around the Geum River estuary ...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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하구역은 무엇인가? | 하구역은 강물과 해수가 만나는 전이지대로서 강물을 통해 육지에서 공급되는 부유물질과 용존 화학성분들이 물리적인 희석작용, 생물에 의한 흡수, 부유물질에 의한 탈착과 흡착 등과 같은 공급과 제거과정을 통해 급격한 변화를 보이는 곳이다. 특히, 계절적인 강우량의 차이와 하구둑 건설로 인한 강물 유출량의 변화, 지형적인 특성, 해수유동의 변동, 주변 도시하수의 유입과 같은 인간활동의 영향으로 그 변화 양상은 매우 복잡하다(Yang et al. | |
하구역의 변화 양상이 복잡한 이유는? | 하구역은 강물과 해수가 만나는 전이지대로서 강물을 통해 육지에서 공급되는 부유물질과 용존 화학성분들이 물리적인 희석작용, 생물에 의한 흡수, 부유물질에 의한 탈착과 흡착 등과 같은 공급과 제거과정을 통해 급격한 변화를 보이는 곳이다. 특히, 계절적인 강우량의 차이와 하구둑 건설로 인한 강물 유출량의 변화, 지형적인 특성, 해수유동의 변동, 주변 도시하수의 유입과 같은 인간활동의 영향으로 그 변화 양상은 매우 복잡하다(Yang et al., 1999). | |
하구 퇴적물의 구성요소는? | 하구 퇴적물은 주로 하천기원 부유물질로 구성되어져 있으며 부유물질의 기원, 운반 및 퇴적과정, 하구역의 환경요인에 따라 그 분포가 달라진다(Seo and Park, 2007). 한반도 서해안의 경우, 연안을 따라 한강, 금강, 만경강, 동진강, 영산강 등과 같은 큰 강이 위치하고 있고 이들 해역의 하구 퇴적물에 있어서 강물로부터 유입되는 부유물질의 영향이 매우 중요할 것으로 여겨지고 있다(Park and Khim, 1990). |
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