• 제목/요약/키워드: East Sea/sea of Japan

검색결과 482건 처리시간 0.026초

동해 각 분지의 수층내 산소 소모율 추정 (Estimates of Basin-Specific Oxygen Utilization Rates (OURs) in the East Sea (Sea of Japan))

  • 김일남;민동하;이동섭
    • 한국해양학회지:바다
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    • 제15권2호
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    • pp.86-96
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    • 2010
  • 해양환경에서의 산소 소모율에 관한 자료는 생지화학적인 탄소 순환뿐만 아니라 기후 모델을 구성하는 중요한 변수들 중에 하나이다. 그러나 동해의 산소 소모율 자료는 모델에 이용될 수 있는 하나의 변수로써는 아직 구체적으로 정립되지 못했다. 해수의 물리적인 특성이 서로 다른 동해의 각 분지에서 깊이에 따른 수층내 산소 소모율 분포를 1999년 여름에 관측된 겉보기 산소 소모량과 프레온-12 분압 나이를 이용하여 계산한 후, 200~2000 m 수심구간에서 지수함수로 표현하였다. 계산된 산소 소모율은 일반적으로 상층 수심에서 높고 수심이 깊어짐에 따라 감소하는 경향을 보였다. 산소 소모율은 서부와 동부 일본 분지에서 뚜렷한 차이를 보이지 않았고, 울릉분지는 표층 영 역(수심 0~200 m)을 포함했을 때와 그렇지 않았을 때 추정치의 차이가 컸으며, 야마토 분지는 저층에서 다른 분지에 비해서 산소 소모율이 굉장히 낮은 값을 보였다. 수심 200~2000 m 사이에서 산소 소모율은 서부 일본 분지에서 8.15~0.83, 동부 일본분지에서 8.11~0.68, 울릉 분지에서 5.29~0.73, 야마토 분지에서 7.31~0.06 ${\mu}mol$ $kg^{-1}$ $yr^{-1}$을 보였다. 향후, 기후 변화와 관련하여 겨울철 표층해수역의 산소 불포화도를 고려한 산소 소모율 추정이 요구된다.

Fluctuations of Coastal Water Temperatures Along Korean and Japanese Coasts in the East Sea

  • KANG Yong-Q.;CHOI Seong-Won
    • 한국수산과학회지
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    • 제21권6호
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    • pp.351-360
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    • 1988
  • Based on historic data of monthly means of sea surface temperatures (SST) for 24 years $(1921\~1944) $ at 23 Korean and Japanese coastal stations in the East Sea (the Japan Sea), we analyzed spatio-temporal characteristics of coastal SST and SST anomalies. The means of SST at Korean coast are higher than those at Japanese coast of the same latitudes, and the annual range of SST at Korean coast are larger than those at Japanese coast. Empirical orthogonal function analysis shows that almost all $(96\%)$ of the SST fluctuations are described by simultaneous seasonal variations. The flurtuations of SST anomalies are small in the Korea Strait and large at the boundaries between the warm and told currents in the basin. The fluctuations of SST anomalies along Korean coast are correlated each other The same is true for SST anomalies along Japanese coast. However, there is only weak correlation between the SST anomalies at Korean coast and those at Japanese coast. Empirical orthogonal function analysis shows that $27\%$ of the coastal SST anomalies in the East Sea are described by simultaneous fluctuations, and $12\%$ of them are described by alternating fluctuations between Korean and Japanese coasts.

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삼중자망에 의한 동해 심해 수산자원의 망목별 어획특성 (Fishing investigation with trammel nets by mesh size in the Korean deep-water of the East Sea)

  • 박해훈
    • 수산해양기술연구
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    • 제49권1호
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    • pp.1-17
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    • 2013
  • The investigation for species composition and catch in the Korean deep-water of the East Sea (also known as Sea of Japan) was carried out with trammel nets of 7 mesh sizes (6.1~24.2cm) offshore Donghae (2006) and Yangyang (2007) of Korea. The catches were 1,268kg and composed of 37 species between 200m and 1,200m in depth. The principal species caught were Taknka's snailfish, salmon snailfish, red snow crab, hunchback sculpin, snow crab, spinyhead sculpin, Tanaka's eelpout, Alaska cod and so on. Those were target fish for commercial value except salmon snailfish. The mesh sizes for the largest catch were 10.6cm and 15.2cm in the fishing ground of Donghae and Yangyang, respectively. The habitat of snow crab was shallower than that of red snow crab in both areas. Trammel net enabled to investigate fish in deep-water with small fishing vessel and rather cheap expenses in contrast to bottom trawl that required too much of it. With increasing inner mesh size of trammel net the mean size of some principal species such as Taknka's snailfish, spinyhead sculpin, hunchback sculpin, Pacific cod, snow crab, red snow crab and hybrid between snow crab and red snow crab tended to be large in certain range of mesh size.

동해산 Panomya nipponica Nomura et Hatai, 1935 ( Bivalvia , Hiatellidae ) 의 종 기재 ( Panomya nipponica Nomura et Hatai, 1935 ( Bivalvia, Hiatellidae ) in the Northwestern Sea of Japan ( East Sea )

  • Lutaenko, Konstantin A.
    • 한국패류학회지
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    • 제13권2호
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    • pp.109-115
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    • 1997
  • Panomya nipponica는 모식산지로 알려진 일본 북동부에서만 발견되는 것으로 알겨져 있으며, 일부학자들은 P. norvegica와 동일종으로 간주하기도 하나 패각의 형태에서는 뚜렷이 차이가 난다. 본 종은 드물게 발견되기 때문에 분류학적 위치가 아직 불분명하며, 일본에서 조차 근래에는 이 종에 대한 인용이나 보고가 거의 없어 동해(일본 북서해0에서 채집되느Panomya nipponica에 대한 종 기재를 하였다.

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First Record of Maritime Pseudoscorpion Garypus japonicus (Garypidae) from Korea

  • Choi, Eun-Hwa;Hwang, Ui-Wook
    • Animal Systematics, Evolution and Diversity
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    • 제25권3호
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    • pp.261-264
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    • 2009
  • A maritime pseudo scorpion Garypus japonicus Beier, 1952 collected from Dokdo Island in the East Sea of Korea is reported and illustrated, which is the first record in Korea. The family Garypidae is also newly recorded in Korea. G. japonicus has been known only from Japan by Beier (1952) so far. Through the present study, its distributional range is extended to Korea.

Decapod Crustaceans of Dokdo Island, Korea

  • Hong Byung-Kyu;Kim Mi-Hyang;Kim Jung-Nyun;Jeon Kyeong-Am
    • 한국수산과학회지
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    • 제39권spc1호
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    • pp.252-258
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    • 2006
  • Thirteen decapod crustaceans of Dokdo Island were identified and classified based on samples collected around Dokdo Island from May 1999 to November 2004. Of the 13 species, 7 were unrecorded from Dokdo Island: Axiopsis princeps, Pagurus angustus, Pagurus japonicus, Pagurus nigrivittatus, Pagurus spina, Portunus trituberculatus, and Hemigrapsus penicillatus. Of these 7 species, Pagurus nigrivittatus and Pagurus spina were new to the Korean decapod fauna. However, P. spina was only reported as the type series from the Pacific coast of northern Japan. Its geographic range now extends to the East Sea. To date, 25 decapod crustaceans (1 caridean, 1 thalassinidean, 11 anomurans, and 12 brachyurans) have been reported from Dokdo Island.

동해안 화진포 외호의 홀로세 동안의 진화: 동해의 해수면 변동과 관련된 환경변화 (Holocene evolution of the Outer Lake of the Hwajinpo Lagoon on the Eastern Coast of Korea; Environmental changes with Holocene sea-level fluctuation of East sea (Sea of Japan))

  • Jong-Gwon, Yum;Kang-Min, Yu;Keiji, Takemura;Toshiro, Naruse;Akihisa, Kitamuras
    • 한국제4기학회:학술대회논문집
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    • 한국제4기학회 2003년도 제4기학회 제33차 학술발표대회
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    • pp.39-40
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    • 2003
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사할린 연안 유전개발 프로젝트 현황과 전망 (A Summary of Oil and Gas Development Projects on Sakhalin Offshore and Its Prospects)

  • 임채환
    • 연구논문집
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    • 통권28호
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    • pp.111-121
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    • 1998
  • Offshore of Sakhalin Island is one of potential oil and gas development fields in Russia. American and Japanese companies are actively participating in the developments. They plan to export the produced oil and gas to East Asia including Korea, Japan and China. So far, offshore oil and gas field developments are mainly concentrated in the Russian Arctic area such as Barents Sea, Kara Sea and Tinman-Pechora Sea. In this article, the projects under development on the Sakhalin Shelf are reviewed and the environmental conditions in this area are summarized. At the end, the future prospects of the Sakhalin developments are reviewed.

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지진해일 수치실험 결과의 고해상도 에니메이션 생성 (Creating a High-Definition Animation of Tsunami Propagation)

  • 김경옥;육진희;민병일;최병호
    • 한국해안·해양공학회논문집
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    • 제23권5호
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    • pp.327-334
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    • 2011
  • 대양 및 분지를 횡단하는 지진해일 전파 시뮬레이션은 컴퓨터 집약적인 작업이다. 이 보고는 지진해일의 해수면 높이와 유속장에 대한 방대한 출력을 다루는 효과적이고 상세화된 과학가시화 기법을 보여준다. 이 고화질의 과학가시화 기법은 1960년과 2010년 칠레지진해일의 시뮬레이션과 1983년 동해중부지진해일의 결과를 제시하는데 사용되었다. 고화질 그래픽 애니메이션은 해양과 연안의 지형에 따른 지진해일의 자세한 전파양상을 보여줄 수 있는 도구이다.

동해의 쓰시마난류 분포역에서 음속의 변동 (Variation of Sound Speed in the Tsushima Warm Current Region of the East Sea)

  • 이충일;조규대;김상우
    • 한국수산과학회지
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    • 제36권2호
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    • pp.170-177
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    • 2003
  • This study is to analyze the influence of the Tsushima Warm Current (TWC) on the variation of sound speed in the southern part of the East Sea. Sound speed is calculated by method of Chen and Millero (1977:, based on the CTD data measured in June of 1996. Sound speed in the central part of the TWC is about $45ms^{-1}$ more fast than that in the other regions without the TWC. Sound speed minimum layer (SML) in the TWC region exists between loom and 341 m, while it exists between 260m and 290m in the non-TWC region. SML distributes along the path of TWC over continental shelf in the coastal waters of Japan.