• Proceedings of the Korean Environmental Sciences Society Conference
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• 2003.05a
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• pp.85-87
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• 2003

문헌 32편에서 조사된 출현종수는 43종에서 200종까지였고, 그 중에서 주요종수는 2종에서 27종까지로 조사되었다. 본 조사에서 기록한 주요종은 모두 50속 116종이었고, 규조류 34속 89종(76.6%), 와편모조류 11속 22종(18.9%), 황갈색조류 2속 2종(1.7%), 남조류, 라피도조류, 유글레나조류가 각각 1속 1종(0.9%)이었다. 생태적 특성을 반영하는 주요종으로서는 우점종이 Actinoptychus serunius를 비롯하여 79종, 출현빈번종이 Coscinodiscus centralis를 비롯하여 50종, 적조원인종이 Cochlodinium polykrikoides를 비롯한 36종이었다. 또한 3가지의 주요 특성을 모두 지닌 종은 Prorocentrum micans를 비롯한 11종이었다. 여러 문헌에서 주요종으로 언급했던 종은 규조류인 Skeletonema costatum이었고 단일 속(genus)으로서 18종의 많은 종이 조사된 속은 Chaetoceros속이었다.

• KCID journal
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• v.2 no.2
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• pp.37-45
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• 1995

In this study, formulae related tidal current-stone diameter and weight have been analyzed based on the real sea dike construction situation. Three formulae which denoted Shields, Isbash and Netherlands's simple method have been compared by the various ti

• Journal of Environmental Science International
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• v.12 no.7
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• pp.725-733
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• 2003

This survey was carried out to assess important species of phytoplankton in the ocean and bay in Korea from 32 references. The number of important species assessed from 50 genera 116 species. Of them, Bacillariophycea(diatoms) 34 genera 89 speceis(76.6%), Dinophyceae(dinoflagellates) 11 genera 22 species(18.9%), Chrysophyceae 2 genera 2 species(1.7%), Cyanophycea(blue-green algae), Raphidophyceae, Euglenophyceae(euglenoids) 1 genera 1 species(0.9%) respectively. By ecological characters, the number of dominant species were 79 species including Actinoptychus seranius, 50 species including Coscinodiscus centralis were recorded as frequently apperaing species and 36 species including Cochlodinium polykrikoides were recorded as red-tide causative organism. Also, 11 species including Prorocentrum micans were surveyed as the indicator including all ecological characters.

• Monthly Korean Chicken
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• s.125
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• pp.74-80
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• 2005

안전성 여부를 떠나 소비자들의 막연한 두려움과 거부감으로 인해 아직까지 조류인플루엔자가 발생하지도 않은 국내 양계산물 소비가 대폭 감소하는 현상이 나타나고 있다. 이에 축산신문 주최로 지난 10월 17일 '조류인플루엔자 우려속에 양계산물 안전성과 소비대책 모색을 위한 간담회'가 열렸다. 이날 내용을 요약 게재, 소비자와 관련업계에 올바른 정보를 제공하는 한편 효과적인 대응책이 무엇인지 제시해 보았다.

• KCID journal
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• v.9 no.1
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• pp.48-58
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• 2002

This study was carried out to investigate the changes of the tide velocity and direction during the construction of Saemangeum seadikes. Tide velocity and direction in the Saemangeum area were measured every year since the construction of Saemangeum seadi

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2018.11a
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• pp.100-102
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• 2018

조석간만의 차가 크고 강한 조류가 흐르는 진도해역 명량수도 및 장죽수도 항로에 조류관측시스템과 대형 LED등기구 전광판을 설치하여 이용자에게 조류의 방향, 속도, 경향을 실시간으로 제공하는 조류신호시스템을 구축하였다. 통항선박의 안전을 확보하고, 항로표지시설 인프라를 활용한 이용자 중심의 안전정보를 다양한 매체를 통해 제공하는 방법과 지속적으로 안정적인 조류정보를 제공하기 위한 신뢰도 향상에 관한 연구를 수행하였다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2011.11a
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• pp.23-25
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• 2011

선박이 다른 선박을 회피하거나 항로를 변경하기 위하여 변침을 하는 경우에, 바람과 조류가 선박의 조종운동에 영향을 줄 수 있다. 이러한 영향을 반영하여 변침 계획을 세울 수 있다면, 보다 높은 안전성과 효율성을 기대할 수 있다. 본 논문에서는 바람과 조류가 선박의 변침에 미치는 영향을 연구하였다. 먼저 바람과 조류의 영향을 고려하여 조종운동방정식을 구성하였으며, 이를 시뮬레이션 하였다. 이후에 변침에 필요한 명령타각의 결정을 위하여 Fuzzy 제어를 적용하였으며, 바람과 조류에 크기에 따라 선박의 제어에 미치는 영향을 분석하였다. 마지막으로 바람과 조류의 영향이 선박의 변침 궤적 및 선박의 속도 변화에 미치는 영향을 분석하였다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2017.11a
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• pp.163-166
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• 2017

조석간만의 차가 크고 강한 조류가 흐르는 인천 부도해역 조류의 유향, 속도, 경향을 측정하여 이용자에게 신뢰성있고 안정적인 정보를 제공할 수 있도록 조류관측 전용등부표를 설치하였으며, 데이터 품질유지를 위해 전용등부표 설치 전 후 측정값을 비교분석한다.

• Journal of the Korean Society of Marine Environment & Safety
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• v.23 no.2
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• pp.187-193
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• 2017

This study evaluated tidal stream energy resources according to tidal flow properties around Uido off the west coast of, Jeollanam-do, South Korea. A feasibility study was first carried out through the collection of bathymetry data and tidal phase information. For this simulation, a depth-averaged 2D ADCIRC (Advanced Circulation) model for real sea situations was applied to a Finite Element Method (FEM) approach for tides given the variation of tidal current speed. Hydrodynamics were simulated with 4 major tidal constituents (M2, S2, K1, and O1) after setting up 4 observation points. From the real depth-averaged model simulation results, it was found that the spring tide Higher High Water (HHW) and tidal current speed values at the 4 observation points were about 2.2 m and 1.33 m/s, respectively. The ADCIRC model results were analyzed with reference to the Korea Hydrographic and Oceanographic Agency's (KHOA) observed data for verification. Furthermore, using topographical characteristics via the Tidal Flux Method (TFM), tidal energy density distribution was calculated, indicating a maximum tidal energy density of about $1.75kW/m^2$ for the 5 assessment areas around Uido. The tidal energy density was evaluated with consideration given to topographical characteristics as well as tidal elevation and tidal current speed to determine an optimum tidal farm candidate.

• Korean Journal of Ecology and Environment
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• v.38 no.2 s.112
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• pp.217-224
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• 2005

This study was aimed to analyze the long-term fluctuation of water quality and phytoplankton dynamics of Paldang reservoir in Korea and to assess the relationship between algal bloom patterns and hydrological, limnological data. Diatoms in Paldang reservoir occurred continuously through the year. Blue- green algae occurred during the summer season (from June to Sept.), and the highest count was observed in July. Occurrence pattern of green algae was similar to that of blue-green algae. The rest of algae contained a lot of Cryptomonas spp. whose concentration was high from May to Aug. Dominant algal genera (>>7,000 cells $mL^{-1}$) in Paldang reservoir were Aulacoseira, Cyclotella, Microcystis, and Cryptomonas spp. Microcystis and Anabaena occurred during the summer season. Many different green algal genera were found in Paldang reservoir but their abundances were very low. There were some significant correlations (r>0.3, p<0.05) between algal taxa and water quality; diatoms and water temperature, TP:blue-green algae and water temperature, pH, DO saturation, COD, TP; green algae and water temperature, pH, DO saturation, COD, SS, TP. Furthermore, algal genera and water quality was significantly correlated (r>0.3, p<0.05) ; Aulacoseira and TN, TP; Anabaena and water temperature, DO saturation, COD, TP : Microcystisand water temperature, pH, DO saturation, TP; Coelastrum and COD, SS; Scenedesmus and water temperature, COD, TN, TP; Cryptomonas and DO saturation, TN. In Paldang reservoir, the water temperature had relatively big effect on blue-green algal bloom that was also dependant upon its hydrologic condition.