• Title/Summary/Keyword: 동해랑

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동해에서 쓰시마난류 분포역의 수온의 장ㆍ단기 변화

  • 이충일;조규대
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • 2002.10a
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    • pp.135-136
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    • 2002
  • 동해는 지중해적 성격을 지닌 북서태평양의 연해이면서도 깊이가 약 200m 이천에 불과한 말은 대(쓰시마)해협으로 인하여, 동해의 남서부 해역의 상층부를 통한 고온, 고염의 쓰시마 난류수가 유입되고 있다. 동해에서 일어나는 해양학적 현상들은 외양의 축소형태를 나태내고 있다. 즉, 동한 난류는 서안경계류의 특성을 나타내고 있고, 북쪽의 저온 저염수와 남쪽의 고온, 고염수와의 경계역에서는 극전선이 형성되고 있다(Choi et. al., 1995). (중략)

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Computation of Tsunamis in the East Sea using Dynamically Interfaced Nested Model (동적결합쓰나미모형에 의한 동해쓰나미 산정)

  • 최병호;홍성진;우승범;에핌페리높스키
    • Proceedings of the Korean Society of Coastal and Ocean Engineers Conference
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    • 2000.09a
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    • pp.47-54
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    • 2000
  • 역사적으로 동해에서의 쓰나미는 자주 발생하지는 않았지만, 동해에서의 지진 진앙지가 유라시아와 북태평양 플레이트사이인 일본연안을 따라 위치하고 있어서 우리나라의 동해 연 안, 일본연안 및 러시아 연안에 큰 쓰나미에 의한 피해를 줄 수 있다. (중략)

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A Study of tourist resort for Cheon-Kok cave (관광지로서의 천곡동굴 연구)

  • 홍충열
    • Journal of the Speleological Society of Korea
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    • v.40 no.41
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    • pp.58-69
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    • 1995
  • 천곡동굴이 위치하고 있는 동해시의 천곡동은 동해시역 중에서도 중심부에 해당되는 지역이다. 이 지역은 북쪽의 묵호지역과 남쪽의 북평지역을 연결시켜주는 지역이며 교통도 매우 편리하고 앞으로도 크게 발전할 수 있는 곳이다. 또한 이 지역은 수산항이라고 할 수 있는 묵호항과 산업항인 동해항( 및 북평항)과의 중간지점에 위치하여 두 지역의 결합적 역할수행이 요구되고 있는 지역이기도 하다. 또한 동북아시아의 관광루우트 설정시에도 동해시가 동해안의 중심적인 현관구실을 하여야 할 곳으로 대두되고 있어 앞으로 인구흡인의 원동력이 될 수 있는 관광개발이 요구되고 있는 현실이다.

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동해안 너도대게 자원조사

  • 전영열;황선재;박중연;홍병규;김영섭;허영희
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • 2001.05a
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    • pp.415-416
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    • 2001
  • 지금까지 동해에 서식하는 대게류근 대게(Chionoecetes opilio, 일명 영덕대게)와 붉은대게(Chionoecetes japonicus, 일명 홍게)의 두 종류가 있었다. 대게는 200∼800m수심의 사질이 많은 곳에서 주로 서식하면서 자망에 의해 어획되고 있으며, 붉은대게는 500∼2,300m의 동해 심층에 분포, 서식하면서 근해통말어업에 의해 어획되고 있다. 특히, 대게는 동해 주요 합가류 중의 하나로서 그 맛이 특이하게 좋아 고가로 판매되면서 동해 어민들의 소득향상에 크게 기여하고 있는 종이다. (중략)

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Summer Hydrographic Features of the East Sea Analyzed by the Optimum Multiparameter Method (OMP 방법으로 분석한 하계 동해의 수계 특성)

  • Kim, Il-Nam;Lee, Tong-Sup
    • Ocean and Polar Research
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    • v.26 no.4
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    • pp.581-594
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    • 2004
  • CREAHS II carried out an intensive hydrographic survey covering almost entire East Sea in 1999. Hydrographic data from total 203 stations were released to public on the internee. This paper summarized the results of water mass analysis by OHP (Optimum Multiparameter) method that utilizes temperature, salinity, dissolved oxygen, pH, alkalinity, silicate, nitrate, phosphate and location data as an input data-matrix. A total of eight source water types are identified in the East Sea: four in surface waters(North Korea Surface Water, Tatar Surface Cold Water, East Korean Coastal Water, Modified Tsushima Surface Water), two intermediate water types (Tsushima Middle Water, Liman Cold Water), two deep water types (East Sea Intermediate Water, East Sea Proper Water). Of these NKSW, MTSW and TSCW are the newly reported as the source water type. Distribution of each water types reveals several few interesting hydrographic features. A few noteworthy are summarized as follows: The Tsushima Warm Current enter the East Sea as three branches; East Korea Coastal Water propagates north along the coast around $38^{\circ}N$ then turns to northeastward to $42^{\circ}N$ and moves eastward. Cold waters of northern origin move southward along the coast at the subsurface, which existence the existence of a circulation cell at the intermediate depth of the East Sea. The estimated volume of each water types inferred from the OMP results show that the deep waters (ESIW + ESPW) fill up ca. 90% of the East Sea basins. Consequently the formation and circulation of deep waters are the key factors controlling environmental condition of the East Sea.

Satellite-altimeter-derived East Sea Surface Currents: Estimation, Description and Variability Pattern (인공위성 고도계 자료로 추정한 동해 표층해류와 공간분포 변동성)

  • Choi, Byoung-Ju;Byun, Do-Seong;Lee, Kang-Ho
    • The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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    • v.17 no.4
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    • pp.225-242
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    • 2012
  • This is the first attempt to produce simultaneous surface current field from satellite altimeter data for the entire East Sea and to provide surface current information to users with formal description. It is possible to estimate surface geostrophic current field in near real-time because satellite altimeters and coastal tide gauges supply sea level data for the whole East Sea. Strength and location of the major currents and meso-scale eddies can be identified from the estimated surface geostrophic current field. The mean locations of major surface currents were explicated relative to topographic, ocean-surface and undersea features with schematic representation of surface circulation. In order to demonstrate the practical use of this surface current information, exemplary descriptions of annual, seasonal and monthly mean surface geostrophic current distributions were presented. In order to objectively classify surface circulation patterns in the East Sea, empirical orthogonal function (EOF) analysis was performed on the estimated 16-year (1993-2008) surface current data. The first mode was associated with intensification or weakening of the East Korea Warm Current (EKWC) flowing northward along the east coast of Korea and of the anti-cyclonic circulation southwest of Yamato Basin. The second mode was associated with meandering paths of the EKWC in the southern East Sea with wavelength of 300 km. The first and second modes had inter-annual variations. The East Sea surface circulation was classified as inertial boundary current pattern, Tsushima Warm Current pattern, meandering pattern, and Offshore Branch pattern by the time coefficient of the first two EOF modes.

Geographical Cognition and the literary Geography Figuration of the 'Dong Hae' in Joseon Dynasty (조선시대의 '동해'에 대한 지리인식과 문학적 형상)

  • Lee, Seung-Su;Oh, Il-Whan
    • Journal of the Korean association of regional geographers
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    • v.16 no.5
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    • pp.441-456
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    • 2010
  • While the Dong Hae was originally named for the point of the compass, it became a proper noun containing knowledge on the long history. The Dong Hae has played host to a number of historic events and cultural meanings and is a geographical space in the nature. This study examined the geographical cognition of ancestors about the Dong Hae among the historic and cultural meanings of Dong Hae and a variety of figurations described in literature. Intellectuals of the Joseon period identified the global geography on a higher level an recognized the geography and topography of the land in the structure that they identified. In this aspect, Mt. Baekdu, one of two mountains which dominated the world, ruled the geography of Liaodong field, the Korean peninsula and Japnn. Historical geographers mentioned the Dong Hac whenever discussing Mt. Baekdu and Baekdudaegan (Great Range) from long ago. Baekdudaegan and the Dong Hae are the complete symbol of national territory with great size, depth, height, width, dignity and magnanimity. The cultural figurations of the Dong Hae were classified into four categories. In Korean literature, the Dong Hae strengthened the spirits of those who lived in the Korean peninsula. Second, the Dong Hae was the basis to see through and deliberate the reasons of life and the world. Third, the view of the Dong Hae from Baekdudaegan changed the cognition about the land. Finally, the Dong Hae was where the hard life of people in the fishing villages occurred and a variety of customs and trades were dynamically deployed.

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An Informetric Analysis on the Notation of East Sea Recorded in Academic Journals ('동해' 표기에 대한 계량적 분석)

  • Han, Jong Yup
    • Journal of the Korean Society for information Management
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    • v.32 no.1
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    • pp.23-41
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    • 2015
  • This study worked on the qualitative analysis about nomenclature East Sea by the record type in researches related to East Sea shown in the scientific journals. Here in this study, the way of marking is classified as three: 'sole notation of East Sea', 'sole notation of Sea of Japan', and 'simultaneous notation of both'. Based on a total of 4,192 selections from Web of Science DB, the analysis was followed up for change in time series by the notation type, notation type according to the nation that authors belong to, difference in research topic, impact factor, collaboration in research, and co-authorship network. The result turned out in this work that the sole notation of Sea of Japan accounted for the largest portion. It also showed that the rates of sole notation of East Sea and simultaneous notation have kept increasing continuously since the 1990s. Hub nations regarding the research of East Sea is five including Japan, Russia, Korea, USA, and China. In the case of sole notation of Sea of Japan, active collaboration studies are performed in USA, Russia, and China with a focus in Japan. In the case of sole notation of East Sea and simultaneous use, the research rate is relatively high in USA and Japan with a focus in Korea. As to the co-authorship network in the sole notation of Sea of Japan, sort of a "giant component" among different groups has been set up and through which the collaborative works are actively underway. However, it was found that the research of sole notation of East Sea is dispersed into small groups on the base of relevant individual institution.

Distribution of the East Sea Intermediate Water in November 1994 (1994년 11월 동해 중층수의 분포)

  • CHOI Yong-Kyu;CHO Kyu-Dae
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.30 no.1
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    • pp.119-127
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    • 1997
  • In order to investigate the distribution of the last Sea Intermediate Water (ESIW), CTD measurement was peformed in the last Sea of Korea during $8\~11$ November, 1994. ESIW was $2.0\~2.3^{\circ}C$ in potential temperature, $34.04\~34.06\%_{\circ}$ in salinity and $5.6\~6.1\;ml/l$ in of gen content on the isopycnic surface of 27.2 in potential density. The isopycnic surface of 27.2 which represented the layer of ESIW became shallower from about 200 m depth in the open sea to about 140 m depth near the coast. off the coast of Jukbyun, the 27.2 isopycnic surface was located at the depth of about 120 m and had a little higher potential temperature and salinity, lower oxygen content than those in the open sea. The ESIW on the continental shelf was higher about 0.8 ml/l in AOU, 0.02 in salinity than those of the ESIW in the open sea. These suggest that the ESIW on the continental shelf did not come from the North Korean Cold Water but originated from the open sea.

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