• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2003.05a
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• pp.140-141
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• 2003

식물플랑크톤은 여러 환경요인들의 변화와 해역의 해양학적 특성에 따라서 매우 다른 형태의 군집구조를 나타내고(Legendre and Legendre,1978), 물리적, 화학적 환경요인의 변동에 따라 종조성이나 출현수에 있어서 뚜렷한 변동을 보이므로 생태계의 구조와 기능을 이해하는데 중요한 역할을 한다(Smayda,1978). 식물플랑크톤의 군집구조는 해양생태구조 파악이나 해역의 환경지표 및 효율적 해역이용관리를 위해 무엇보다 우선 파악되어야하며(Gou and Zang, 1996), 생태계의 구조와 기능을 이해하기 위해서는 식물플랑크톤의 분포양상 및 군집구조를 환경요인과 같이 연구하는 것이 필수적이다. (중략)

• 한국해양학회지
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• v.19 no.1
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• pp.89-93
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• 1984

Vertical and horizontal distributions of chemical oceanograthic parameters were measured in Jinhae Bay in July, 1983. On the Masan-Gadeog section, high amounts of dissolved nitrates, ammonia, chlorophylla-a, and particulate carbon and nitrogen were observed in waters with low salinity. In the inner Masan Bay, high concentrations of dissolved ammonia and phosphates were shown. The C/N ratio in the surface waters was higer in the outer bay. Concentrations of dissolved inorganic nitrogen and phosphates in the surface waters seemed to be sufficient for red tides to occur.

• Journal of the Korean Society for Marine Environment & Energy
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• v.7 no.1
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• pp.1-12
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• 2004

The summer distribution of $Cha-{alpha}$ and physical processes for simulating outbreak region of red tide were estimated by the Eco-Hydrodynamic model in Chinhae Bay. As a result of simulation of surface residual currents, the southward flow come in contact with the northward flow at the inlet and western part of bay in case of windlessness and below wind velocity 2 m/sec. As wind velocity increases, the velocity and direction of currents were fairly shifted. The predicted concentration of $Cha-{alpha}$ exceeded 20 mg/㎥ in Masan and Haengam Bays, and most regions were over 10 mg/㎥, which meant the possibility of red tide outbreak. From the results of the contributed physical processes to $Cha-{alpha}$, accumulation sites were distributed at the northern part of Kadok channel, around the Chilcheon island, the western part of Kajo island and some area of Chindong Bay. On the other hand, inner parts of the study area such as Masan Bay were estimated as the sites of strong algal activities. Masan and Haengam Bay are considered as the initial outbreak region of red tide by the modeling and observed data, and then red tide expanded to other areas such as physical accumulation region and western inner bay, as depending on environmental variation. The increase of wind velocity led to decrease of $Cha-{alpha}$ and enlargement of accumulation region. The variation of intensity of radiation and sunshine duration caused to rapidly fluctuation of $Cha-{alpha}$: however, it was not largely affected by the variation of pollutant loads from the land only.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2015.07a
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• pp.183-185
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• 2015

반폐쇄해역에서는 해수교환이 어렵고 육상에서 유입부하와 적조 등의 영향을 강하게 받기 때문에 항상 수질과 저질이 악화되기 쉬운 환경에 처해 있어서 이의 개선을 위한 일환으로 해양식물(잘피)의 서식환경을 복원하여 해양정화에 기여하기 위한 친환경적 접근이 필요하다. 다양한 해상환경조건하에서 잘피의 서식은 변화므로 특히, 파랑의 극한 외력여건에 견디는 친환경 잘피 지지구조물 기술개발이 우선되어야 한다. 본 연구는 잘피장 조성의 기반기술로 해양식생 지지용 바이오 블록을 개발하고 특히, 관광지 및 해양클러스터 단지로 대외적으로 알려져 있는 영도해역에서 영도구가 야심차게 준비해오고 있는 해상낚시터 인근해역에 적용할 수 있는 바이오 블록의 현장시범거치를 통해 잘피 등 해양식생을 유도하기 기반을 마련하기 위한 기초연구로 대상구역에서의 파랑해석과 식생 조성 후에 파랑의 반응특성을 수치모델을 통해 분석하고자 하였다. 계산 결과는 대상지역에 적용할 사면 피복재로 바이오 블록의 규격을 결정하는데 반영될 것이며 후속 연구에서 실제블록의 제작과 현장거치를 수행하고자 한다.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.33 no.4
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• pp.339-347
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• 2000

An algicidal bacterium, Micrococcus sp. LG-5 against the harmful dinoflagellate, Cochlodinium polykrikoides was isolated. The optimal conditions for the highest algicidal activity of bacterial culture filtrate showed in the range of $20{\~}30^{\circ}C$, at pH 7.0 and $3.0{\%}$ of NaCl concentration. In addition, $IC_(50)(mean of 50{\%} inhibitory concentration)$ of the culture filtrate against C. polykrikoides after incubation of 5 days was $0.482{\%}$. To investigate heat and pH stability of the culture filtrate of Micrococcus sp. LG-5, the culture filtrate ($pore size, 0.1 {\mu}m$) was heated to $121^{\circ}C for 15 min$ and adjusted pH from 2.0 to 10.0. There were no significant changes in algicidal activity by heat treatment and the pH change between pH from 5.0 to 10.0. The algicidal substances produced from Micrococcus sp. LG-5 were mainly detected in the fraction of $10,000{\~}1,000$ MWCO (molecular weight cut-off). The culture filtrate of Micrococous sp. LG-5 showed antimicrobial activity against Enterococcus faecalis, Escheiichia coli, Uebsiella pneunioniae and Vibrio altinolyticus, but did not show against Pseudomonas aeminosa, P. Buorescens, Salmonella typhi, Staphylococcus aureus, V. cholerae and V parahaemolyicus. The culture filtrate of Micrococcus sp. LG-5 was examined against 16 phytoplankton species and showed the algicidal activity against Ajexandzium tuarense, Eutreptiella Drnnastin, Gymnodinium catenatum, G. mikimotoi, G. sanguineum, eyodinium impuaicum, Heterocapsa triquetra, Heterosipa akashiwo, Prorocentrum micans and Pyraminonas sp.. However no algicidal effects of Micrococcus sp. LG-5 were observed against Chlamydomonas sp., Cylindrotheoa closterium, P. mininum, P. triestimum, Pseudonieschia sp. and Sczipuiella trochoidea. On the other hand, algicidal activity on the tested marinelivefood was not detected except for Isochrysis galbana. In addition, physiological responses of cultured olive flounder (Paralichthys oliraceus) exposed to $1 and 10{\%}$ of the culture filtrate of Micrococcus sp. LG-5 were measured. There were no clear changes in AST, GGT, creatinine, urea, total cholesterol, total protein, albumine, $Mg^(+2), Ca^(+2), Na^+, K^+, and Cl^-$. These results indicate that olive flounders were not affected when they were exposed to the culture filtrate of Micrococcus sp. LG-5.

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2000.10a
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• pp.131-132
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• 2000

문명이 발달하면서 각종 생활오폐수, 산업폐기물들이 인근바다나 호수 혹은 강으로 유출되어 이들 오폐수에 포함된 다량의 무기 혹은 유기물질이 저면에 축적되고 있다. 축적된 오염물은 단순한 축적으로 끝나지 않고 이들이 다양한 생물종, 특히 조류에 대한 영양공급원으로 작용하여 적조류나 녹조류가 극심하게 번성하게 된다. (중략)

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2001.05a
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• pp.350-351
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• 2001

황토는 주로 규소(Si)와 알루미늄(Al)을 포함하는 각종 점토와 철(Fe) 및 기타 미량 금속을 포함하는 불순물로 구성된 금속산화물로서 분해력, 자정력, 흡수력, 원적외선 방사력, 생약성(해독력 및 항균력)등을 나타내고 있어 오래 전부터 수(水) 처리 과정에서 무기흡착제로 이용되어 오고 있으며, 토양개량제, 의약 및 식용, 환경 정화제와 축산, 적조 제저제에 이르기까지 다양하게 이용되어 오고 있다. (중략)

• Journal of the Korea Institute of Information and Communication Engineering
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• v.16 no.10
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• pp.2113-2120
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• 2012

The study of automatic monitoring and analysis of marine environment in Korea is not enough. Recently, the marine monitoring technology is actively being studied since the sea is a rich repository of natural resources that is taken notice in the world. In particular, the marine environment data should be collected continuously in order to understand and analyze the marine environment, however the marine environment monitoring is limited in many area yet. The prediction of marine disaster by automatic collecting marine environment data and analyzing the collected data can contribute to minimized the damages with respect to marine pollution of oil spill and fisheries damage by red tide blooms and marine environment upsets. In this paper, we proposed the marine environment monitoring and analysis system model. The proposed system automatically collects the marine environment information for monitoring the marine environment intelligently. Also it predicts the marine disaster by analyzing the collected ocean data.

• 한국해양학회지
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• v.11 no.1
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• pp.34-38
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• 1976

Monthly observation of phytoplankton were made from September, 1974 to June 1975 at three stations in the Masan Bay. Sixty three species of phytoplankton (diatoms), representing 25 genera were taken in this study. Of these Skeletonema costatum, Eucampis zoodiacus, Ditylum brightwellii, Chaetoceros debilis, Coscinosira polychorda, and Leptocylindrus danicus were the dominant species in this area. By the ecological division the neritic species occupied 85.71% of total diatom diversity and it showed the characteristics of emayment. Diversity index(H) were the lowest in January and May in surface, while the highest in October. Phytoplankton standing crop varied extensively by months; ranging from 3,780 to 7,642,798 cells/l. total phytoplankton standing crop showed three major peaks in September, December and May. After bloom diatom standing crop were decreased gradually and showed minimum in November and February.

• Journal of the Korean Society for Marine Environment & Energy
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• v.5 no.3
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• pp.23-27
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• 2002

Ocean pollution like as oil spill and red tide have occurred considerable and executing clean-up them. Rapid prediction of polluting area is necessary that efficiency clean-up. In this study, develop the program that clean-up worker could easy predict polluted area. This paper is introduced configuration and contents of ODM(oil diffusion modelling) which constructed with GUI(Graphic User Interface) system. ODM is consisted with pre, post and main process, and constructed on window process. So, clean-up worker easy operating program and confirm the result. Studying this program, the distribution of ocean pollutant and phase of ocean movement is shown without difficulty on a computer.