• Journal of Environmental Science International
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• v.13 no.11
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• pp.1001-1007
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• 2004

The rapid industrialization and urbanization in Osaka Bay have produced many serious water pollution problems since the 1960s. A symbolic phenomenon is algae bloom (red tide), which occurred 53 times in 1976. The special law was enacted in 1973 and a number of administrative steps were taken, such as cutting COD loading, reductions in phosphorus (P) and restriction of land reclamation. As a result, the pollution of Osaka Bay has gradually been reduced, and the environment has been improved to some extent. In this study, to analyze the relations between water qualities as well as a social, economic activity by the coastal zone, the water quality data in Osaka Bay of 70 years past since 1921 were collected. Data such as population, livestock, fertilizer, industrial product etc. were also collected for estimating nutrients flowing into bay from land. It was found that the water quality was changed of a similar trend of estimated nutrients load, with delay of about four or five years.

• Journal of Environmental Science International
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• v.16 no.8
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• pp.881-889
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• 2007

The flora of vascular plants in Jangsanbong located at Busan Metropolitan City was investigated from April 2003 to April 2004. Vascular plants in the surveyed area were 254 taxa that belonged to 78 families, 175 genera, 218 species, 34 varieties, and 2 forma. Among them, 20 taxa of evergreen broad trees, 31 taxa of naturalized plants were identified, and especially Rubus trifidus was first recorded in Busan. In the upper part of a circular road dominant species was Pinus thunbergii. In the lower part of a circular road and the coastal area, dominant species were Platycarya strobilacea, Clerodendron trichotomum, Euscaphis japonica, Quercus aliena, Quercus dentata, Mallotus japonicus, which distribute mainly in the subtropical and temperate zone. In the surveyed area, the canopy consistsed of tall trees, Pinus thunbergii, and the understratum were trees such as Eurya japonica, Ficus erecta, Ligustrum japonicum, Prunus sargentii, and Celtis sinensis var. japonica.

• Proceedings of the KAIS Fall Conference
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• 2009.12a
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• pp.339-341
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• 2009

연안역에 대한 관심이 고조되면서 연안역을 따라 많은 산업화와 관광권화가 진행되고 있으나 안전시설에 대한 무관심으로 인해 많은 인적 및 물적 피해가 속출하고 있다. 충청권 연안역이 가지고 있는 지역적(관광, 산업, 방조제 등) 및 자연적(조수, 해일, 지진, 해양기름유출, 해안습지, 태풍 등) 특성을 고려한 연안역 안전시설을 개발하고자 연구를 수행하고 있다. 선행연구로 서해안 연안역 현장조사를 통한 안전시설물의 설치 현황을 살펴보고 이를 분석하였으며, 이를 통해 연안역 안전시설의 성능 및 설계기준, 건설재료 등에 대한 연구를 기획하였다. 연구과제의 최종 수행결과물로서 제시될 해안 안전 시설물 계획 설계 시공 유지관리에 대한 개발추진계획을 제시한다.

• Journal of Microbiology and Biotechnology
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• v.24 no.5
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• pp.592-596
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• 2014

HMO-2011, a recently isolated lytic phage that infects the SAR116 bacterial clade, represents one of the most abundant phage types in the oceans. In this study, the HMO-2011 genome sequence was compared with virome sequences obtained from various depths of the Pacific Ocean regions using metagenome binning. HMO-2011 was confirmed to be one of the most highly assigned viruses, with a maximum of 7.6% of total reads assigned. The HMO-2011-type phages demonstrated a depth-specific distribution, showing more abundance in the euphotic zone of coastal, transition, and open ocean regions as compared with the dark ocean.

• Proceedings of the KAIS Fall Conference
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• 2012.05b
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• pp.848-851
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• 2012

본 연구에서는 서해안의 지역적 특성을 고려한 말뚝지지형 조립식 잔교의 상부구조를 구성하는 요소 부재인 주거더 ㄷ형강과 가로보 및 가로거더 H형강에 대해 횡-비틀림 좌굴(Lateral-Torsional Buckling) 여부와 부재별 좌굴강도 값을 유한요소해석을 통해 산정하였으며, 산정한 좌굴강도 값과 부재에 작용하는 설계하중에 대한 안전성 검토를 하였다.

• Proceedings of the KSRS Conference
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• 2004.10a
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• pp.685-688
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• 2004

Fresh water discharge from the sea floor strongly affects a coastal ecology and the diffusion of contaminants. Much fresh water discharge has been found in the edge of Kurobe alluvial fan, in which annual rainfall is over 4000mm and there is abundant groundwater. However, it is difficult to find the groundwater discharge, thus the search of possible areas with some remote sensing tools is required. Because the temperature of the discharge point is relatively low compared with the surrounding sea water surfaces, there is a possibility to detect the area as an irregular zone of thermal infrared images. Two anomalous temperature zones, which have no surface streams from rivers, are detected by ASTER thermal-infrared images. One of them was verified as the groundwater discharge point by dives. In addition, the distribution of water table under the land side of the two areas is also detected as irregular zones by a ground-penetrating radar

• Proceedings of the KSRS Conference
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• 2006.03a
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• pp.28-30
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• 2006

인접효과는, SWIR 데이터 상에 혼선 현상이 명백히 나타나지만, 본토와 반도의 해안지역에서 ASTER센서의 VNIR과 SWIR 데이터를 이용해서 논의된다. 이 분석의 목적은 정교한 스케일에서 대기와 해양환경의 광 특성을 이끌어 내기 위해서이다. 에어로졸 모델은 dust-like model을 따른다. Terra 위성 의 ASTER와 MISR은 이 모델을 적용한다. 데이터는 2000년 7월 10일 GMT1.55, 나고야 근처의 Atsuml 반도 ($34^{\underline{\circ}}40'N,\;134^{\underline{\circ}}00'E$) 에서 얻었다. VNIR 공간 분해능은 15m, SWIR은 30m이다.

• Journal of Species Research
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• v.5 no.3
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• pp.381-384
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• 2016

Two marine amoebae Vannella bursella (Page, 1974) Smirnov et al., 2007 and Pseudoparamoeba sp. were encountered from marine coastal waters of Masan Bay and Garorim Bay (Korea), respectively. These species are described with uninterpreted records based on light-microscopy of living cells and reported taxonomically for the first time from Korea. Diagnostics of these species are as follows. Vannella bursella: size in vivo, $17-29{\mu}m$ long with flattened ovoid, semicircular locomotive forms. Pseudoparamoeba sp.: size in vivo, $10-15{\mu}m$ long with elongated locomotive forms, producing a few short conical pseudopodia from anterior hyaline zone.

• Proceedings of the Korea Committee for Ocean Resources and Engineering Conference
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• 2000.04a
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• pp.117-122
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• 2000

In these days, the pollution of marine environment near island at Korean coastal zone caused by the trash, human waste and livestocks excreta become series problem. One of the most economic and efficient way to prevent this pollution problem is to set up island circulating incineration system. In this paper, the results of feasibility study on the application of turtle boat hull form to the incinearting vessel has been summarized especially for the resistance and course keeping point of view.

• The Korean Journal of Malacology
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• v.7 no.1
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• pp.58-65
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• 1991

A study on the distribution and community structure of the benthic molluscan shells of the southern coastral area in Cheju Island was carried out from August 1990 to July 1991. The benthic molluscan shells collected and identified from 8 stations were composed of 3 classes, 7 orders, 22 families and 59 species. The number of appearance species from station 1 to station 8 were 22, 35, 32, 26, 28, 24, 32 and 31 species respectively. the first dominant species of the upper intertidal zone of the 8 stations were Nodilittorina exigua, those of the middle zones were Monodonta neritoides from st.1 to St.5, but the second dominant species were not uniftom at ach station.