• 제목/요약/키워드: Korean coastal seas

검색결과 213건 처리시간 0.026초

Spring Phytoplankton Bloom in the Fronts of the East China Sea

  • Son, Seung-Hyun;Yoo, Sin-Jae;Noh, Jae-Hoon
    • Ocean Science Journal
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    • 제41권3호
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    • pp.181-189
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    • 2006
  • Frontal areas between warm and saline waters of the Kuroshio currents and colder and diluted waters of the East China Sea (ECS) influenced by the Changjiang River were identified from the satellite thermal imagery and hydrological data obtained from the Coastal Ocean Process Experiment (COPEX) cruise during the period between March $1^{st}$ and $10^{th}$, 1997. High chlorophyll concentrations appeared in the fronts of the East China Seas with the highest chlorophyll-a concentration in the southwestern area of Jeju Island (${\sim}2.9\;mg/m^3$) and the eastern area of the Changjiang River Mouth (${\sim}2.8\;mg/m^3$). Vertical structures of temperature, salinity and density were similar, showing the fronts between ECS and Kuroshio waters. The water column was well mixed in the shelf waters and was stratified around the fronts. It is inferred that the optimal condition for light utilization and nutrients induced both from the coastal and deep waters enhances the high phytoplankton productivity in the fronts of the ECS. In addition, the high chlorophyll-a in the fronts seems to have been associated with the water column stability as well.

The oceanic condition of the Tsushima Warm Current region the southern part of the East Sea (Sea of Japan) In June, 1996

  • 이충일;조규대
    • 해양환경안전학회:학술대회논문집
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    • 해양환경안전학회 2003년도 추계학술발표회
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    • pp.167-174
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    • 2003
  • Oceanic conditions of the Tsushirm Wann Current (1WC) region in the southern area if the East Sea (the Japan Sea) are examined using data obtained from a CREAMS (Circulation Research if the East Asian Marginal Seas) cruise in June 1996. In 1990s, a lower temperature appears in $19\%$ and in this period, two branch of the TWC exist and the first branch of the TWC flows inshore if the Japanese coastal region compared to tfr1t in the other years, especially in the sfr1llower water layer at less th:1n about 2mm. The TWC cored with the higher salinity (>34.6 psu) is clearly observed over the continental shelf zone in the Japanese coastal region and offshore and identified by geostrophic calculation Intrusion if the TWC into the East Sea through the Korea Strait (the Tsushima Strait) makes the density structure in the water column change and the water mass in the TWC region is unstable based on Brunt- Vaisala frequency.

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해상교통안전진단 사례분석을 통한 진단제도의 효과분석에 관한 연구 (A Study on the effectiveness of Maritime Traffic Safety Audit Scheme through Case Analysis)

  • 송태한;김영두
    • 한국연안방재학회지
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    • 제5권4호
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    • pp.193-201
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    • 2018
  • The recent increase in size and speed of ships resulted in the existing maritime routes becoming narrow relative to the size of new ships. At the same time, as the improvement and optimization in marine transportation take place and the construction of structures in seas and harbor improvements pick up speed, there is an increasing probability of marine accidents. Due to these environmental changes, the need to professionally analyze the effect of marine structures on navigation arose to ensure safety of ships and a law was enacted and introduced for the Maritime Traffic Safety Audit (MTSA). In this study, a Qualitative assessment for verifying the effectiveness of MTSA was carried out with case analysis and analysis model in other similar audit scheme. It is expected that an analyzed result for effectiveness of MTSA will be a steppingstone for enhancing the MTSA and keeping maritime traffic safety as its own purpose.

한.중.일 다자간 어업협력체 구성방안 연구 (A Study on the Construction of the Multiple Fishery Cooperation System Between Korea, China and Japan)

  • 심호진
    • 수산경영론집
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    • 제39권2호
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    • pp.81-108
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    • 2008
  • Since the declaration made by UN Convention on the Law of the Sea on EEZs, The open seas of Northeast Asia, considerd as a convention area, needed new agreements in conformity with the changes brought by the introduction of the Exclusive Economic Zone(EEZ) system. The Contracting Parties of these agreements set up their own EEZs, which extend certain ranges from their baselines, Fishing in the other party's EEZ is done based on mutual agreements, which take into account traditional fishing activity in the zones. Seperate fishries management systems, in accordance with the relevant legal status of the waters, are applied to individual overlapping areas: Middle Zone in the Bast Sea and the waters south of jeju Island, Interim Measure Zone in the Yellow Sea and East China Sea, and the Transitional Zone in the Yellow Sea. They decided to conclude fisheries agreements as the provisional agreement under Article 74(3) of the UN Convention before the delimitations of the EEZs to avoid the territorial disputes. China and Japan concluded the Fishries Agreement in the November 1997, allowing each coastal State 52 mile EEZ. it was followed by Korea and Japan in September 1998, reaching a final compromise. And also Korea and China came to a satisfactary settlement in November 1998. Fisheries agreements have been established between the three North-east Asian States, the agreement are all bilateral. That implies inefficient resource management on the overlapping waters of the three states, especially on the East China Sea. The Korea-Japan Fisheries Agreement and the China-Japan Fishery Agreement worked as governing rules in the North-east Asian seas before the establishment of EEZs (Exclusive Economic Zones). However the conclusion of the bilateral fishery agreements, Korea China and Japan have developed EEZs, and these three countries have competed for the exploitation of fisheries resources. Therefore, the issue of fisheries resource management was no longer a single countries' problem and emerged as a common issue facing these three countries. In recognition of the above-mentioned problem, it is needed for the construction of cooperative System fishery management in the North-east Asian seas. Therefore, cooperative measures should be establishied. The final goal of the construction of fisheries management cooperative system is to establish sustainable fisheries in the North-east Asian seas. However, there is a big difference in fisheries management tools, fishing gear, exploitation rate of species, etc. This implies that a careful approach should be taken in order to achieve the cooperative fisheries management among Korea, China and Japan. conclusionly, the Governments of Korea, China and Japan should complement three bilateral agreemens, and which they prepares to 'Fisheries Resource Restore Program' Between Korea, China and Japan in the adjacent waters south of Jeju Island.

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한국산 놀래기과 어류의 분류학적 검토 (Taxonomical Review of the Korean Labroidei (Teleostei: Perciformes))

  • 김병직
    • 한국어류학회지
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    • 제21권sup1호
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    • pp.74-74
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    • 2009
  • The perciform suborder Labroidei comprising six families (Cichlidae, Embiotocidae, Pomacentridae, Labridae, Odacidae, and Scaridae) are characterized by having the specialized pharyngeal jaws for food processing, i.e., united fifth ceratobranchials and upper pharyngeal jaw articulating with the basicranium via diarthroses (Stiassny and Jensen, 1987). They usually inhabit in the most tropical and subtropical seas and comprise about 235 genera and roughly 2,274 species worldwide (Nelson, 2006). Concerning the Korean labroid fishes, Mori (1952) had listed 18 genera and 26 species belong to four families in his check list of Korean fishes since Jordan and Metz (1913) firstly reported six genera and seven species in only two families (Embiotocidae and Labridae). Chyung (1977) added two species, Tilapia mossambica and Cirrhilabrus temmincki, to Mori’s list and also classified them into three suborders, i.e., Embiotocina (containing only Embiotocidae), Pomacentrina (Cichlidae and Pomacentridae), and Labrina (Labridae and Scaridae). Subsequently, Lee and Kim (1996) reviewed the Korean labroidfishes taxonomically resulting in 22 genera and 32 species in five families with some taxonomical modifications including a new Korean record. It is remarkable to be added many new Korean recordsto the pomacentrids or the labrids for recent 10 years (Koh et al., 1995; Yoo et al., 1995; Koh et al., 1997; Myoung, 1997; Choi and Kim, 2000; Choi et al., 2002; Kim and Go, 2003). Recently, Kim et al. (2005) briefly described all members of the Korean Labroidei with a color photograph or a figure, recognizing 27 genera and 42 species in five families. In the present study, the current taxonomical status of the Korean labroid fishes including distributional features is summarized based both on specimens collected from the Korean waters and on literature survey to provide bio-information of the Korean native fish species. As a result, the Korean labroid fishes totally consist of 27 genera and 44 species in five families, that is, Cichlidae (1 species), Embiotocidae (3), Pomacentridae (15), Labridae (22), and Scaridae (2). They distributed mainly in the coastal waters of the South Sea, Korea, however, most pomacentrids or labrids occur in the coastal waters of Jeju Island only, although some species were observed in their larval or juvenile stages only from coastal waters of the island. Interestingly, several species are expanding their distribution north to Ulreung and Dok islands in the East Sea, Korea lately.

A Study on the Classification of the Korean Anthozoa: 7. Scleractinia (Hexacorallia)

  • Song, Jun-Im
    • 한국동물학회지
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    • 제25권3호
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    • pp.131-148
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    • 1982
  • 한국산 六放珊瑚類의 계통분류학적 연구를 하기 위하여 1969년 12월부터 1981년 7월까지 남한의 16개지역 (동해, 남해, 황해연안과 도서지방)으로부터 채집된 표본들을 동정분류한 결과 다음과 같은 돌산호類에 속하는 5亞目 6科 11屬 17種을 얻었다. 이들은 모두 韓國未記錄種이며 다음과 같다. Psammocora profundacella, Alveopora japonica, Culicia japonica, Caryophyllia japonica, Cyathoceras niinoi, Heterocyathus aequicostatus, H. japonicus, Stephanocyathus (Odontocyathus) spiniger, Desmophyllum insignis, Flabellum distinctum, F. rubrum, F. transversale, Dendrophyllia boschmai, D. cribrosa, D. florulenta, Tubastraea aurea 및 T. coccinea.

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A Study on the Classification of the Korean Anthozoa: 2. Alcyonacea

  • Song, Jun-Im
    • 한국동물학회지
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    • 제19권2호
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    • pp.51-62
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    • 1976
  • 1963년 10월부터 1975년 5월까지 東海와 南海沿岸으로부터 채집된 標本들을 同定한 결과 1目 3科 5屬 8種을 얻었다. 이들은 모두 韓國未記錄種이었으며 다음과 같은 종들이다. Bellonella rubra Brundin, 1896; B, rigida putter, 1900; B. unicolor (Kukenthal, 1906); Alcyonium gracillimum Kukenthal, 1906; Paraspongodes spiculosa (Kukenthal, 1906); P. hitotai (Utinomi, 1951); Dendronephthya pectinata (Holm, 1895); Siphonogorgia dofleini Kukenthal, 1906.

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A Systematic Study on Octocorallia in Kora: 6. Holaxonia (Gorgonacea)

  • Song, Jun-Im
    • 한국동물학회지
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    • 제24권2호
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    • pp.99-115
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    • 1981
  • 著者는 한국산 八放珊瑚類의 계통분류학적 연구를 하기 위하여 1965년부터 1978susRK지 동해의 울릉도 (苧洞, 道洞, 沙洞)와 남해의 尾浦, 海金剛, 鴻島, 황천도, 濟州, 爲美里, 林島, 地歸島, 西歸浦, 鳥島, 門島, 虛島등 15개 지역으로부터 채집된 標本들을 同定分類한 결과 다음과 같은 全軸類에 속하는 3科 7屬 15種을 얻었다. 이들은 모두 韓國 未記錄種이었으며 다음과 같다. Anthoplexaura dimorpha, Euplexaura anastomosans, E. abietina, E. crassa, E. recta, Ellisella maculata, E. rubra, E. limbaughi, Verrucella umbraculum, V. stellata, Primnoa reseda pacifica, Callogorgia pseudoflabellum, Plumarella spinosa, P. rigida 및 P. adharens.

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레포츠피싱을 통한 어가소득 증대에 관한 연구 (Feasibility of Enhancing Fishing Household Income Through Leports-fishing Development)

  • 박성쾌
    • 한국수산경영학회:학술대회논문집
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    • 한국수산경영학회 2007년도 춘계학술발표회 및 심포지엄
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    • pp.133-158
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    • 2007
  • This study aims at analyzing the potential of leports-fishing for improving fishing household income. Leports-fishing is a composite concept which is combined with those of leisure, sports and fishing. Korean on-shore resources have also a composite characteristic. The characteristics of the east, west and south coastal waters are quite different in geography, biology and ecology. There is a array of leports-fishing development potentials of utilizing their characteristics. At present, angling forms a main activity of leports-fishing, but coastal seas would be an emerging space for the public. In order for them to be a ground of fun, enjoyment and festivals, there would be necessary to supply a wide range of activities including angling, scuba diving, fish barbecue, ecological experience, fishing experience, cruise, and so forth. As seen in the survey results, the participants have strong desire for fun and enjoyment through leports-fishing activities. The proportion of people participating in one or two times a year amounts to 40 percent. Most coastal places visited are close to medium/large cities and two-days leports-fishing/ tourism accounts for some 77 percent. However, it is shown that conflicts between leports-fishing participants and fishermen are not serious. The results of expenditure function estimation appear that the elasticity of per capita income is very high with 1.2660 and that there are negative relationships between leports-fishing expenditure and transportation/food/lodging costs. Assuming the economic growth rate of 4 percent, it is anticipated that Korean leports-fishing population will increase to 3.18 million in 2010 and 4.07 million in 2015. Korean leports-fishing market potential in 2015, which is calculated based on per capita expenditure on leports-fishing appeared to be 1,400 billion won$\sim$1,600 billion won. The contribution of such market potential is expected to be 62.3$\sim$74.2 percent(934.5 billion won$\sim$111.3 billion won) to the fishing households.

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레포츠피싱을 통한 어가소득 증대에 관한 연구 (Feasibility of Enhancing Fishing Household Income Through Leports-fishing Development)

  • 박성쾌;김수진;김영자
    • 수산해양교육연구
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    • 제19권2호
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    • pp.180-196
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    • 2007
  • This study aims at analyzing the potential of leports-fishing for improving fishing household income. Leports-fishing is a composite concept which is combined with those of leisure, sports and fishing. Korean on-shore resources have also a composite characteristic. The properties of the east, west and south coastal waters are quite different in geography, biology and ecology. There is a array of leports-fishing development potentials of utilizing their characteristics. At present, angling forms a main activity of leports-fishing, but coastal seas would be an emerging space for the public. In order for them to be a ground of fun, enjoyment and festivals, it would be necessary to supply a wide range of activities and facilities including angling, scuba diving, fish barbecue, ecological experience, fishing experience, cruise, and so forth. As seen in the survey results, the participants have strong desire for fun and enjoyment through leports-fishing activities. The proportion of people participating in one or two times a year amounts to 40 percent. Most coastal places visited are close to medium/large cities and two-days leports-fishing/tourism accounts for some 77 percent. However, it turned out that conflicts between leports-fishing participants and fishermen are not serious. The results of expenditure function estimation appear that the elasticity of per capita income is very high with 1.2660 and that there are negative relationships between leports-fishing expenditure and transportation/food/lodging costs. Assuming the annual national economic growth rate of 4 percent, it is anticipated that Korean leports-fishing population will increase to 3.18 million in 2010 and 4.07 million in 2015. Korean leports-fishing market potential in 2015, which is calculated based on per capita expenditure on leports-fishing, appears to amount to 1,400 billion won~1,600 billion won. The contribution of such market potential to the fishing households is expected to be 62.3~74.2 percent(934.5 billion won~111.3 billion won).