• Journal of Environmental Science International
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• v.20 no.11
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• pp.1425-1435
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• 2011

Time-series change in Gyeongpo beach shoreline was illustrated using DGPS(Differential Global Positioning System, resolution < 0.6m) observation from April, 2009 to April, 2010. The shoreline was subdivided into 12 areas, and westward and eastward movement of shoreline position at each area was calculated. In general, the shoreline moved toward sea during summer, and it moved toward land during winter. The southern and northern part of the shoreline had different pattern in time-series. The shoreline in the southern part moved toward sea during summer and moved toward land during winter, but time-series pattern of the shoreline in the northern part was more complicated than that in the southern part. Pattern of time-series change in the northern part was made up of three different types; the first is that the shoreline moves continuously toward land, and the second thing is that the shoreline's movement is the opposite to the southern part, and the third thing is that the shoreline maintains a state of equilibrium without any great fluctuation. The total length of the shoreline was the largest during winter and the smallest during summer. In general, time-series change in the shoreline had positive(+) relationship with sea surface pressure and wind speed.

• Molecular & Cellular Toxicology
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• v.2 no.3
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• pp.170-175
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• 2006

The extensive isolation of genes responsive to stressful conditions from a soft coral Scleronephthya gracillimum was described. Soft coral colonies were exposed to thermal and chemical stressors to induce the expression of stress related genes. Differentially expressed genes by natural or anthropogenic stressors were identified by construction of standard and stress exposed-paired subtractive cDNA library. Thirty-two and thirty-seven kinds of candidate genes were identified from thermal or benzo[a]pyrene stress exposed group, respectively, which are associated with cell cycle, cell signaling, transcription, translation, protein metabolism, and other cellular functions. The expected function of each gene was described. The isolated and identified differentially expressed genes have a great potential to identify environmental stressors in global environmental changes and could act as molecular biomarkers for biological responses against environmental changes. Finally, it may open a new paradigm on soft coral health assessment.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.48 no.4
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• pp.507-528
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• 2015

The Fish Collection Project collected 356 fish species from the Southern Sea of Korea during 2010-2012, 55 more than previously collected. The fishes belonged to 3 classes, 29 orders and 128 families. The 5 dominant orders, Perciformes, Scorpaeniformes, Pleuronectiformes, Tetraodontiformes, and Clupeiformes, accounted for ~80% of the identified species. Additionally, 126 species were collected from the Southern Sea for the first time, while 85 species that had been found in previous collections were not seen. The species variety of fish in the Southern Sea may be influenced by its unique oceanographic conditions such as increased water temperatures in coastal areas, so regular surveys would assist our understanding of the fish community. We suggest that various collection methods, including diving, be used to collect fish species inhabiting rocky shore or deep-sea areas, where commercial fishing gear is difficult to deploy.

• Proceedings of the Korea Society of Environmental Biology Conference
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• 2001.12a
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• pp.76-77
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• 2001

• Korean Journal of Fisheries and Aquatic Sciences
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• v.53 no.5
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• pp.790-793
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• 2020

Length-weight relationships (LWR) for 27 fish species inhabit Southern sea in Korea were investigated to describe several biological characters. Total 7,399 individuals were collected by R/V Tamgu-20 using bottom trawl between 2018 to 2019 and were identified as 19 families and 27 species. Parameter b ranged from 2.414 to 3.472. Thirteen species among 27 species showed isometric growth (b=3), six species showed negative allometry (b<3) and eight species showed positive allometry (b>3). The results of this study provide useful basic biological information about 27 fishes and are highly reliable due to use of data measured directly.

• Journal of the Korean Society of Marine Environment & Safety
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• v.10 no.1 s.20
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• pp.35-40
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• 2004

Ship can not sail without water. Ships sail along different routes with different natural conditions. Thus ships sailing at different sea areas have their respective characteristics. The northern sea area and the southern one of China have different characteristics, that is to song, the sea in the northern area is shallow and that in the southern area is deep, Chinese ships developed into different types in order to adapt to this.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.46 no.2
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• pp.216-222
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• 2013

The seasonal distribution and abundance of larval fishes in the central and southern surface waters of the East Sea were investigated seasonally during 2011 and 2012. During the study period, the larvae of 39 species belonging to 26 families were collected. The most abundant species were Engraulisjaponicus, which accounted for 97.5% of the total number of individuals collected. Scomber japonicus, Clupea pallasii, Chromis notatus, Cottidae sp., and Coryphaena hippurus accounted for 1.7% of the total. The number of species, number of individuals, and species diversity indices fluctuated with the season. The peak number of species and individuals occurred in September and May, respectively. The larvae of the main species displayed a distinct spatial distribution and seasonal occurrence patterns. E. japonicus and C. notatus widely distributed throughout the study area. During summer and autumn, S. japonicus and C. hippurus were abundant in southern and offshore regions. C. pallasii occurred only in the southern region during winter. The seasonal occurrence and patterns of distribution of the larvae of main species seems were correlated with surface water temperature.

• Ocean and Polar Research
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• v.31 no.4
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• pp.297-304
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• 2009

We investigated the response of the westerly winds over the Southern Ocean (SO) to glacial boundary conditions for the Last Glacial Maximum using the CCM3 atmospheric general circulation model. In response to glacial boundary conditions, the zonally averaged maximum SO westerly winds weakened 20-35% and were displaced toward the equator by 3-4 degrees. This weakening of the SO westerly winds arose from a substantial increase in mean sea level pressure (MSLP) in the southern part of the SO around Antarctica relative to the northern part. The increase in MSLP around Antarctica is associated with a marked temperature reduction caused by an increase in sea ice cover and ice albedo feedback during the glacial time. The weakened westerly winds in the SO and their equator-ward displacement might play a role in reducing the atmospheric $CO_2$ concentration by reducing upwelling of the carbon rich deep water during the glacial time.

• The Journal of the Korean Society for Microbiology
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• v.18 no.1
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• pp.1-9
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• 1983

The author studied on the distribution of V. parahaemolyticus among sea water, sea mud, and various marine products in Jeju, Keoje, Namhae, Yockji, Busan, and Masan on the southern seas of Korea from winter in 1981 to summer in 1982. The author studies for the isolated strains to bacteriological identification Kanagawa phenomenon(hemolytic activity) on Modified Wagatuma blood agar plates and serotypes with anti V. parahaemolyticus. The results obtained were as follows:. 1. V. parahaemolyticus was isolated in 713 strains(28.3%) among 2519 total specimens of sea water, sea mud, and various marine products. 2. The isolation rates of V. parahaemolyticus in summer season were higher than in spring and winter season. Above results were 304 strains(32.6%) among 932 specimens in summer, 160 strains (28.1%) among 570 specimens in spring, 149 strains(14.6%) among 1017 specimens in winter, respectively. 3. The hemolysis on Modified Wagatuma agar added human erythrocytes was 66.0% of positive Kanagawa phenomenon, and was 34.0% of negative Kanagawa phenomenon, respectively. 4. The distributions of serotypes of V. parahaemolyticus isolated were from KI to K VIII of K pooling antisera. The results were 6 strains(6.6%) on K 1 of K I, 14 strains(l5.5%) on K 17 of K II, 26 strains(28.8%) on K 28 of K IV. 10 strains(11.1%) on K 32 of KV, 4 strains(4.4%) on K 39 of KV, 8 strains(8.8%) on K 42 of K VI, 2 strains(2.2%) on K 48 of K VII, 1 strain(1.1%) on K 50 of K II and 7 strains(7.7%) on K 55 of K VII, respectively. 5. V. parahaemolyticus was more frequently isolated from sea mud than sea water and various marine prdoucts in winter season. 6. There was no great difference as far as the distribution of V. parahaemolyticus concerned in Jeju, Keoje, Namhae, Yockji, Busan and Masan of the southern seas of Korea.

• Journal of the Korean Association of Geographic Information Studies
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• v.10 no.3
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• pp.40-48
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• 2007

We analyze relation between phytoplankton and marine environment based on data such as water temperature, phytoplankton, zooplankton, nutrient collected from the southern coast of Korea in the summer, 2004. The water temperature range of the study area was $20.5{\sim}31.5^{\circ}C$ and there was formed a water temperature frontal zone from $20.5^{\circ}C$ to $25.0^{\circ}C$ in Geojedo southern coast and Geomundo island. Especially, high density of nutrients were shown in the southern coast of Geojedo in which water temperature frontal zone was formed strongly, the concentration of chlorophyll-a which is appeared at the highest rate among the phytoplankton pigments was shown more than $0.4{\mu}g/L$ in the inside of frontal zone and zooplankton biomass was than $500mg/m^2$ in that area.