• 제목/요약/키워드: Korean coastal seas

검색결과 213건 처리시간 0.025초

Strategic Environmental Assessment for the Master Plan of Tonkin Gulf Coastal Economic Belt Development: Lesson Learnt

  • Le, Trinh
    • 환경영향평가
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    • 제18권6호
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    • pp.419-427
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    • 2009
  • Methodology and application of Strategic Environmental Assessment (SEA) for policies, plans, and programs are still new approach in Vietnam. With a support from Vietnam-Swedish Project (SEMLA) and Ministry of Natural Resources and Environment (MONRE), SEA for the Tonkin Gulf Coastal Economic Belt Development Plan was conducted in 2008. Lessons obtained from this SEA may contribute to improving methods and practicing SEAs for regional development. The main lessons summarized in this paper are: (i) close cooperation between the planning and environmental teams from the beginning phase of a master plan; (ii) SEA should focus not only on impacts to the natural environment but also on main issues of socio-economic aspects; (iii) approaches and methods used in SEA should be appropriate to properly predict the impacts at regional-levels and cumulative impacts; (iv) a good SEA study may be achieved when detailed data on the environment and socio-economy of the study area are available and have active engagement of stakeholders, including project affected sectors, ecologists, planners, policy makers, etc. This paper is useful for whom, those work in SEA in regional development.

소형선의 연안항해를 지원하는 해상내비게이션 (Maritime Navigation to Aid Costal Sailing of Small-Size Ship)

  • 윤재준;문정환;정종택;김건웅;최조천
    • 한국통신학회논문지
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    • 제41권3호
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    • pp.371-378
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    • 2016
  • 국내 연안을 운항하는 소형어선, 낚싯배, 요트, 보트 등 소형선의 운항자에게 항로탐색, 해상안전정보 등의 제공이 가능한 해상내비게이션을 연구하였다. 스마트 기기의 앱에 의하여 육상 내비게이션 기술을 접목하는 방법으로 설계하여 도서, 양식장, 암초 등에 대한 해상 장해물에 대한 정보가 비교적 정확하며, 사용하기 쉽고, 고가인 ECDIS(Electronic Chart Display & Information System)를 대체하는 수단으로 실현하고자 하였다. 연구내용으로 해상내비게이션의 구성을 위한 데이터베이스 설계 및 운용자를 위한 앱 설계의 부분으로 기술을 구현하였다. 본 연구결과는 스마트 기기에 적용하는 애플리케이션으로써 소형선의 운용자가 별도 장비의 구입, 설치 및 유지보수등의 과정없이 간단하고 편리하게 사용할 수 있으며, 최소의 비용으로 연안해역에서 안전운항을 실현할 수 있다.

전지구 해양의 $M_2$조석 수치모형 ($M_2$ Numerical Model of the Global Ocean Tides)

  • 서경석;최병호
    • 한국해안해양공학회지
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    • 제8권2호
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    • pp.161-173
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    • 1996
  • 전지구 해양의 M$_2$조석 특성을 파악하기 위해 1$^{\circ}$및 1/3$^{\circ}$의 분해능을 갖는 2차원 수치모형을 수립하였다. 특히 수립된 1/3$^{\circ}$수치모형은 현재까지 수행된 전지구 해양 수치모형 중 가장 분해능이 높은 모형으로 기존 수치모형에서 낮은 분해능으로 인하여 평가하지 못하였던 천해역 및 육붕해에서의 조석현상을 평가하였다. 작성된 조석도는 기존의 수치모형 및 위성 고도계 자료로부터 작성된 조석도와 심해의 일부 지역에서 관측된 조화상수와 상호 비교하였다. 계산결과는 1$^{\circ}$모형에 비하여 1/3$^{\circ}$모형에서 향상되었고 1/3$^{\circ}$수치모형의 계산 결과는 국지적 수치모형 운영시 외해 개방 경계조건으로 이용될 수 있음을 제시하였다.

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한국수산업의 해외진출전략에 관한 연구 (Foreign Entry Strategies for Korean Fishery Firms)

  • 김회천
    • 수산경영론집
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    • 제15권1호
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    • pp.131-153
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    • 1984
  • Fishery resources are still abundant compared with other resources and the possibility of exploitation is probably great. The Korean fishery industry has grown remarkably since 1957, and Korea is ranked as one of the major fishery countries. Its of fishery products reached the 9th in the world and the value of exports was 5th in 1982. But recently a growth rate has slowed down, due to the enlargement of territorial seas by the declaration of the 200 mile, Exclusive Economic Zone, the tendency to develop fishery resources strate-gically in international bargaining, the change in function of the international organizations, the expansion of regulated waters, the illegal arrest of our fishing boats, the rapid rise in oil prices, and the fall in fish prices, the development of fishery resources as a symbol of nationalism, the fishing boats decreptitude, the rise of crew wages, regulations on fishing methods, fish species, fishing season, size of fish, and mesh size, fishing quotas and the demand of excessive fishing royalties. Besides the the obligation of coastal countries, employing crews of their host countries is also an example of the change in the international environment which causes the aggravation of foreign profit of fishing firms. To ameliorate the situation, our Korean fishery firms must prepare efficient plans and study systematically to internationalize themselves because such existing methods as conventional fishing entry and licence fishing entry are likely to be unable to cope with international environmental change. Thus, after the systematic analysis of the problem, some new combined alternatives might be proposed. These are some of the new schemes to support this plan showing the orientation of our national policy: 1. Most of the coastal states, to cope with rapid international environmental change and to survive in the new era of ocean order, have rationalized their higher governmental structure concerning the fishery industries. And the coastal countries which are the objectives of our expecting entry, demand excessive economic and technical aid, limit the number of fishing boats’entry and the use of our foreign fishing bases, and regulate the membership of the international fishery commissions. Especially, most of the coastal or island countries are recently independent states, which are poorer in national budget, depend largely on fishing royalties and licence entry fees as their main resources of national finance. 2. Alternatives to our entry to deep sea fishing, as internationalization strategies, are by direct foreign investment method. About 30 firms have already invested approximately US $ 8 million in 9 coastal countries. Areas of investment comprise the southern part of the Atlantic Ocean, the Moroccan sea and five other sea areas. Trawling, tuna purse seining and five other fields are covered by the investment. Joint-venture is the most prominent method of this direct investment. If we consider the number of entry firms, the host countries, the number of seas available and the size of investment, this method of cooperation is perhaps insufficient so far. Our fishery firms suffer from a weakness in international competitive ability, an insufficiency of information, of short funds, incompetency in the market, the unfriendliness of host coastal countries, the incapability of partners in joint-ventures and the political instability of the host countries. To enlarge our foreign fishing grounds, we are to actively adopt the direct investment entry method and to diversity our collaboraboration with partner countries. Consequently, besides proper fishing, we might utilize forward integration strategies, including the processing fied. a. The enterprise emigration method is likely to be successful in Argentina. It includes the development of Argentinian fishing grounds which are still not exploited in spite of abundant resources. Besides, Arentina could also be developed as a base for the exploitation of the krill resources and for further entries into collaboration with other Latin American countries. b. The co-business contract fishing method works in American territorial seas where American fishermen sell their fishery products to our factory ships at sea. This method contributes greatly to obtaining more fishing quotas and in innovation bottom fishing operation. Therefore we may apply this method to other countres to diffuse our foreign fishing entry. c. The new fishing ground development method was begun in 1957 by tuna long-line experimental fishing in the Indian Ocean. It has five fields, trawling, skipjack pole fishing and shrimp trawling, and so on. Recently, Korean fisheries were successful in the development of the Antarctic Ocean krill and tuna purse seining. 3. The acceleration of the internationalization of deep sea fishing; a. Intense information exchange activities and commission participation are likely to be continues as our contributions to the international fishery organizations. We should try to enter international fishery commissions in which we are not so far participating. And we have to reform adequately to meet the changes of the function of the international commissions. With our partner countries, we ought to conclude bilateral fishery agreements, thus enlarging our collaboration. b. Our government should offer economic and technical aids to host countries to facilitate our firms’fishery entry and activities. c. To accelerate technical innovation, our fishery firms must invest greater amount in technical innovation, at the same time be more discriminatory in importing exogeneous fishery technologies. As for fishing methods; expanded use of multi-purpose fishing boats and introduction of automation should be encuraged to prevent seasonal fluctuations in fishery outputs. d. The government should increases financial and tax aid to Korean firms in order to elevate already weak financial structure of Korean fishery firms. e. Finally, the government ought to revise foreign exchange regulations being applied to deep sea fishery firms. Furthermore, dutes levied on foreign purchaed equipments and supplies used by our deep sea fishing boats thould be reduced or exempted. when the fish caught by Korean partner of joint-venture firms is sold at the home port, pusan, import duty should be exempted.

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벵갈만의 조석 (Modelling of Tides in the Bay of Bengal)

  • 최병호;고진석
    • 한국해안해양공학회지
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    • 제6권3호
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    • pp.290-297
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    • 1994
  • 연근해에서의 위성고도계자료의 정확도가 향상됨에 따라 기존에 알려진 Schwiderski의 모형보다 더 정확한 조석모형으로 위성고도계자료에서의 조석성분에 대한 보정을 향상시킬 필요가 있다. 벵갈만은 방글라데시 연안북측에서 발생하는 폭풍해온과 조석의 영향을 현저히 받는 해양특성으로 인해 해양학적 측면에서 관심이 고조되고 있어 초기단계로 벵갈만 전체에 대해 1/4$^{\circ}$ 격자체계의 조석모형을 수립하여 반일주조 (M$_2$, S$_2$, $N_2$, $K_2$)와 일주조 (K$_1$, $O_1$, P$_1$)에 대한 수치모형실험이 이루어졌다. 계산결과들은 기존의 Schwiderski의 조석도 및 관측자료들과의 비교ㆍ검토가 이루어졌다.

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중규모 기상모델(MM5/KMA)과 3세대 파랑모델(WAVEWATCH-III)로 계산된 한반도 주변해역의 2002년 월평균 해상풍과 파랑 분포 특성 (Characteristics of the Monthly Mean Sea Surface Winds and Wind Waves near the Korean Marginal Seas in the 2002 Year Computed Using MM5/KMA and WAVEWATHC-III model)

  • 서장원;장유순
    • 한국해양학회지:바다
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    • 제8권3호
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    • pp.262-273
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    • 2003
  • 기상청에서 현업 예보용으로 사용되는 중규모 기상 모델(MM5/KMA)의 해상풍 예측 결과와 이를 입력 자료로 제 3세대 파랑 모델(WAVEWATCH-III)을 적용하여 2002년 1년 동안의 한반도 주변해역의 해상풍과 파랑 특성을 분석하였다. 모델 결과의 검증을 위해서 해양기상 관측 부이의 관측 자료와 TOPEX/POSEIDON위성의 유의 파고 자료를 이용한 통계 비교 분석을 실시하였다. 관측 값과 모델 결과 사이에 약 60-80%의 상관성을 나타내었고, 연안에 가장 근접해 위치한 칠발도의 풍향을 제외하면, 연안 지역까지의 해상풍과 파고를 본 모델에서 잘 재현하고 있다고 분석되었다. 위의 검증 결과를 토대로 2002년 한반도를 포함한 동아시아 해역의 월평균 해상풍 및 유의파고, 파장, 파주기의 분포도를 제시하였다.

Shallow Water Tides in the Seas around Korea

  • Kantha, Lakshmi H.;Bang, In-Kweon;Choi, Jei-Kook;Suk, Moon-Sik
    • Journal of the korean society of oceanography
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    • 제31권3호
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    • pp.123-133
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    • 1996
  • We describe here the shallow water tides in the seas around Korea, obtained from a nonlinear barotropic model of tides in a domain encompassing the Yellow Sea, the East China Sea and the East Sea (Sea of Japan). As expected, the shallow water tides are large in the shallow marginal areas around the Yellow Sea, with the M4 tide reaching amplitudes as high as 10 cm near the Korean coast, and quite small in the East Sea. However, we also find that the regions east of the Yangtze River ($126^{\circ}E,$ $30^{\circ}N$) in the East China Sea also sustain large shallow water tides, with $M_{4}$, amplitudes reaching 5 cm. Such large shallow water tides are an important component of altimeter-measured sea levels and should not be ignored in any altimetric analyses of the Yellow Sea and the East China Sea. This study also highlights the desirability of very high resolution models to derive accurate shallow water tides in coastal regions.

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이층유체에서 부분 장벽에 의한 표면파와 내부파의 분산 (Surface and Internal Waves Scattering by Partial Barriers in a Two-Layer Fluid)

  • 슈레쉬 쿠마;오영민;조원철
    • 한국해안·해양공학회논문집
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    • 제20권1호
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    • pp.25-33
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    • 2008
  • 파랑은 주로 바람에 의해서 발생하여 많은 에너지를 해안으로 전달하며 각종 수리현상을 야기하고 물질의 이송 등에 의하여 연안환경 뿐만 아니라 인간의 활동에도 큰 영향을 미친다. 또한, 해안 구조물과 파랑의 상호작용에 의한 효과를 정확히 예측하는 것은 구조물의 설계 및 거동특성 파악에 매우 중요하다. 본 논문에서는 이층 유체에서 수표면과 저층에 설치되어 있는 얇은 연직벽에 의한 표면파와 내부파의 분산을 선형파 이론을 이용하여 이차원으로 해석하였다. 반사계수를 계산하여 여러 경우에 대하여 효과를 분석한 결과 반사계수는 구조물의 형상과는 별도로 경계층의 위치와 유체간의 밀도차에 크게 영향을 받는 것으로 밝혀졌다.

해류계 계류에 의한 해류관측: 천해계류 (Moored Current Observation: Shallow-Water Mooring)

  • 황상철;장경일;석문식;장영석
    • 한국해양학회지:바다
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    • 제7권4호
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    • pp.286-303
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    • 2002
  • 한국해양연구원에서는 1978년이래 해류계 계류에 의한 해류관측을 실시하였다. 본 단보에서는 한국주변의 연안역과 대륙붕해역에서 시도하였던 계류 형태와 계류 실패 사례를 소개하고자 한다. 천해역에서는 U-type 계류와 트롤방지 해저 계류장치를 이용한 해류관측 방법이 주로 이용되었다. 천해역에서 계류 실패를 피하기 위해서는 (1) 어로활동을 포함한 계류현장의 환경을 고려하여 적절한 계류 계획을 세워야 하며 (2) 계류기간과 수심 및 기타 예기치 않게 계류선에 영향을 줄 수 있는 제반 요인 등을 고려하여 적절한 계류용품이 사용되어야 한다

Temporal and spatial analysis of SST and thermal fronts in the North East Asia Seas using NOAA/AVHRR data

  • Yoon, Hong-Joo
    • 대한원격탐사학회:학술대회논문집
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    • 대한원격탐사학회 2006년도 Proceedings of ISRS 2006 PORSEC Volume II
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    • pp.831-835
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    • 2006
  • NOAA/AVHRR data were used to analyze sea surface temperatures (SSTs) and thermal fronts (TFs) in the Korean seas. Temporal and spatial analyses were based on data from 1993 to 2000. Harmonic analysis revealed mean SST distributions of $10{\sim}25^{\circ}C$. Annual amplitudes and phases were $4{\sim}11^{\circ}C$ and $210{\sim}240^{\circ}$, respectively. Inverse distributions of annual amplitudes and phases were found for the study seas, with the exception of the East China Sea, which is affected by the Kuroshio Current. Areas with high amplitudes (large variations in SSTs) showed 'low phases' (early maximum SST); areas with low amplitudes (small variations in SSTs) had 'high phases' (late maximum SST). Empirical orthogonal function (EOF) analyses of SSTs revealed a first-mode variance of 97.6%. Annually, greater SST variations occurred closer to the continent. Temporal components of the second mode showed higher values in 1993, 1994, and 1995. These phenomena seemed to the effect of El $Ni{\tilde{n}}o$. The Sobel edge detection method (SEDM) delineated four fronts: the Subpolar Front (SPF) separating the northern and southern parts of the East Sea; the Kuroshio Front (KF) in the East China Sea, the South Sea Coastal Front (SSCF) in the South Sea, and a tidal front (TDF) in the West Sea. Thermal fronts generally occurred over steep bathymetric slopes. Annual amplitudes and phases were bounded within these frontal areas. EOF analysis of SST gradient values revealed the temporal and spatial variations in the TFs. The SPF and SSCF were most intense in March and October; the KF was most significant in March and May.

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