• Title/Summary/Keyword: The Korean waters

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Vertical Distributions of Chemical Oceanographic Parameters in Jinhae Bay in July, 1983 (1983年 7月 鎭海灣의 海洋化學指數의 水質分布에 관하여)

  • Yang, Dong-Beom;Kim, Suk-Hyun;Lee, Kwang Woo
    • 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.

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The Outbreak, Maintenance, and Decline of the Red Tide Dominated by Cochlodinium polykrikoides in the Coastal Waters off Southern Korea from August to October, 2000 (2000년 여름 남해안에 나타난 Cochlodinium polykrikoides 우점 적조의 발생 특성)

  • Jung, Chang-Su;Lee, Chang-Kyu;Cho, Yong-Chul;Lee, Sam-Geun;Kim, Hak-Gyoon;Chung, Ik-Kyo;Lim, Wol-Ae
    • The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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    • v.7 no.2
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    • pp.68-77
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    • 2002
  • We investigated the outbreak, maintenance, and decline of the red tide dominated by C. polykrikoides in the coastal waters off Southern Korea from August to October, 2000, by combining field data and NOAA satellite images. In general, the C. polykrikoides blooms, which have occured annually in Korean coastal waters from 1995 to 1999, initiate between late August and early September around Narodo Island and expand to the whole area of the southern coast. However, initiation and short-term change of the bloom of 2000 were quite different from the pattern observed previously. In mid-August, thermal fronts in sea surface temperature(SST) were formed: 1) between the Tsushima Warm Current Water (TWCW) and the Southern Korean Coastal Waters (SKCW), 2) between the jindo cold water mass and the southwestern coastal waters, and 3) between the upwelled cold waters in the southeast coast and the offshore warm waters. Free-living cells of C. polykrikoides were concentrated in these frontal regions. In late August, the thermal front TWCW-SKCW approached the mouth of Yeosuhae Bay where Seomjin River water and anthropogenic pollutants from the Industrial Complex of Gwangyang Bay are discharged. In the blooms of 2000 initiated in Yeosuhae Bay in late August, the dominant species, C. polykrikoides, co-occured with Alexandrum tamarense, Gymnodinium mikimotoi, Skeletonema coastatum, and Chaetoceros spp. Two typhoons, 'Prapiroon' and 'Saomai' during and the C. polykrikoides bloom probably affected the abundance of this species. After the former typhoon passed the Korean Peninsula, cell growth of C. polykrikoides was maximal, but after the latter typhoon, the C. polykrikoides bloom disappeared (20 September). On 5 October, the blooms dominated by C. polykrikoides broke out within the coastal waters of Jinhae Bay and Hansan-Keoje Bay. NOAA satellite images showed that the isothermal line of 22$^{\circ}C$ extended into Jinhae Bay. In this bloom, C. polykrikoides also occurred simultaneously with Akashiwo sanguinea(=Gym-nodinium sangunium), a common red tide-forming dinoflagellate species in fall and winter in these coastal bays.

Analysis of Inorganic Anions in Various Drinking Waters by Capillary Electrophoresis

  • Choi, One-Kyun;Cho, Jae-Sun
    • Analytical Science and Technology
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    • v.8 no.4
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    • pp.835-841
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    • 1995
  • The quantitation of inorganic anions in various drinking waters were investigated using capillary electrophoresis(CE) and the results were compared with ion chromatography(IC). With CE, in contrast to IC, was demonstrated rapid analysis, good efficiency, a low detection limit and the low comsumption of a solvent and samples. CE analysis was used 5 mM sodium chromate(pH 8.0) containing 20 mM tetraalkylammoniumbromide at -25kV applied voltage with indirect UV detection at 254 nm. This results in exceedingly short analysis time within 3 min. with efficiencies approaching 200,000 theoretical plates. The coefficients of variants of migration time are less than 0.8% and those of peak area are less than 2.3%. Detection limits for quantitative determination were 300 ppb-50 ppm level. These optimum conditions are applicable to various samples without pretreatment.

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First Record of Snapping Shrimp, Prionalpheus sulu (Decapoda: Caridea: Alpheidae) in Korea

  • Koo, Hye-Young;Kim, Won
    • Animal Systematics, Evolution and Diversity
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    • v.25 no.2
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    • pp.197-199
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    • 2009
  • The alpheid shrimps collected from Jejudo Island turned out to be a species belonging to the genus Prionalpheus which is an unreported genus from Korean waters. In this paper, Prionalpheus sulu is reported for the first time from Korean waters with description and illustration.

A New Record of Ihlea punctata and Redescription of Salpa fusiformis (Salpida: Salpidae) in Korean Waters

  • Kim, Sun-Woo;Won, Jung-Hye;Lee, Jae-Hyun;Kim, Chang-Bae
    • Animal Systematics, Evolution and Diversity
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    • v.26 no.3
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    • pp.353-356
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    • 2010
  • Two species in two genera of the family Salpidae were identified in Korean waters: Ihlea punctata (Forskal, 1775) and Salpa fusiformis Cuvier, 1804. I. punctata is a newly reported species in Korean fauna, while S. fusiformis is redescribed with unrecorded solitary zooid stage.

The Movements Of The Waters Off The South Coast Of Korea

  • Lim, Du Byung
    • 한국해양학회지
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    • v.11 no.2
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    • pp.77-88
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    • 1976
  • The water movements in the south sea of Korea are deduced from the distributions of water properties. In summer the flow path of the Tsushima Current is deflected off from the Korean coast; between the coast and the current there exist eddies. Cyclonic eddies are particularly dominant in the southeastern area of Sorido Is. In winter, the sunken coastal water flows out along the bottom toward the southeast, and compensation is made at the surface by the coastward intrusion of off-shore waters. The so-called coastal counter- current of the area seems to be a cyclonic eddy which prevails in summer and autumn.

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Scolelepis (Scolelepis) kudenovi (Polychaeta: Spionidae) new to Korea

  • Choi, Hyun Ki;Yoon, Seong Myeong
    • Journal of Species Research
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    • v.5 no.3
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    • pp.355-358
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    • 2016
  • A spionid polychaete, Scolelepis (Scolelepis) kudenovi Hartmann-Schroder, 1981, is newly reported from Korean waters with description and illustration. Scolelepis (Scolelepis) kudenovi is characterized by a combination of the following morphological features: the notopodial setae are present on the setiger 1; the occipital tentacle is absent; the branchiae are partially fused to the notopodial postsetal lamellae; the notopodial and neuropodial hooded hooks are bidentate only; the notopodial hooded hooks are present on the posterior setigers. A key to Scolelepis species from Korean waters is provided in this paper.

A Short Note on enoploteuthis (Paraenoplotuthis) chunii (Cephalopoda: Enoploteuthidae) from the Korea Waters (한국산 반딧불오징어, Enoploteuthis(Paraenoploteuthis) chunii에 관한 단보)

  • 손민호;홍성윤
    • Animal Systematics, Evolution and Diversity
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    • v.8 no.2
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    • pp.331-336
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    • 1992
  • The occurrence of Enoploteuthis (Paraenoploteuthis) chunii in the Korean waters, and the following points were reported: 1. morphological variation of the protective membrane in the hectocotylized arm and 2. morphology of the spermatophore.

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