• Proceedings of KOSOMES biannual meeting
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• 2017.11a
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• pp.279-279
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• 2017

• Proceedings of KOSOMES biannual meeting
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• 2017.04a
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• pp.137-137
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• 2017

• Economic and Environmental Geology
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• v.53 no.6
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• pp.781-792
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• 2020

Mine tailings, which are inevitably formed by the development of manganese nodules, manganese crusts, and hydrothermal seafloor deposits, have attracted attention because of their quantity and potential toxicity. However, there is a lack of data on the quantity of mine tailings being generated, their physicochemical properties, and their effects as environmental hazards and on marine ecosystems in general. The importance of treating mine tailings in an environmentally friendly manner has been recognized recently and related reduction/treatment methods are being considered. In the case of deep-sea mineral resource development, if mine tailings cannot be treated aboard a ship, the issue becomes one of the cost of transporting them to land and solving the problem of environmental pollution there. Therefore, the Korea Institute of Ocean Science and Technology conducted research on the harmfulness of mine tailings, their effect on marine ecosystem, the diffusion model of contaminated particles, and candidate purification treatment technologies based on five representative controlling factors: 1) effects of pollution /on the environment, 2) effects of environmental/ biological hazards, 3) diffusion of particles, 4) mineral dressings, and 5) reducing/processing mine tailings. The results of this study can provide a basis for minimizing environmental problems by providing scientific evidences of the environmental effects of mine tailings. In addition, it is also expected that these results could be applied to the treatment of pollutants of different origins and at land-based mining waste sites.

• The KSFM Journal of Fluid Machinery
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• v.12 no.2
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• pp.62-70
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• 2009

• 기계와재료
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• v.24 no.1
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• pp.14-25
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• 2012

우리나라는 지난 10여 년간 조선산업 분야에서 굳건한 세계 1위의 자리를 지켜왔으나, 미국, 노르웨이, 독일, 프랑스와 같은 해양 분야 선진국들은 30여 년 전부터 근해, 천해를 비롯해 심해에 부존되어 있는 가스 및 원유 채굴에 사용되는 해양 플랜트 기술 개발에 집중하여 왔다. 우리나라는 최근 세계적인 해양 자원 개발에 부응한 해양 플랜트 산업의 확대에 발맞추어 세계 최고의 선박 및 해양 구조물 건조 기술을 확보한 조선사를 비롯해 정부, 연구소, 산업체에서 심해저 플랜트 기자재 및 설치 기술 개발에 박차를 가하고 있다. 특히 심해저에서 채굴된 다상의 가스 및 원유를 처리하고 정제하는 심해저 플랜트 공정처리장비의 경우는 고도의 기술력을 요구할 뿐만 아니라 심해저 플랜트 산업의 보수적이고 발주자 위주의 시장구조로 인해, 설령 기술력을 갖추고 있다 하여도 세계 시장 진입이 매우 어려운 실정이다. 따라서 본 연구에서는 심해저 플랜트의 주요 공정처리장비의 기술 현황에 대해 고찰하고자 한다.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.27 no.6
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• pp.679-688
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• 2009

Worldwide exploring and research for manganese nodules, as new energy resource, distributed on the deep seabed have progressed recently. Korea Ocean Research & Development Institute(KORDI) is a central organization to exploit the manganese nodules in the Pacific Ocean with 5,000m depth. Precise exploration is required for estimating amount of recoverable deposit, and this task could be accomplished by processing digital image processing techniques to the images taken by underwater camera system. Image processing and analysis provide information about characteristics of distribution of the manganese nodules. This study proposed effective methods to remove vignetting effect to improve image quality and to extract information. The results show more reliable information could be obtained by removing the vignetting and feasibility of utilizing image processing techniques for exploring the manganese nodules.

• Proceedings of the KSEEG Conference
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• 1999.04a
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• pp.270-272
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• 1999

• The Korean Journal of Air & Space Law and Policy
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• v.21 no.1
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• pp.215-236
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• 2006

This article focused on the meaning of the 1979 Moon Treaty and its future. Although the Moon Treaty is one of the major 5 space related treaties, it was accepted by only 11 member states which are non-space powers, thus having the least enfluences on the field of space law. And this article analysed the relationship between the 1979 Moon Treay and 1967 Space Treaty which was the first principle treaty, and searched the meaning of the "Common Heritage of Mankind(hereinafter CHM)" stipulated in the Moon treaty in terms of international law. This article also dealt with the present and future problems arising from the Moon Treaty. As far as the 1967 Space Treaty is concerned the main standpoint is that outer space including the moon and the other celestial bodies is res extra commercium, areas not subject to national appropriation like high seas. It proclaims the principle non-appropriation concerning the celestial bodies in outer space. But the concept of CHM stipulated in the Moon Treaty created an entirely new category of territory in international law. This concept basically conveys the idea that the management, exploitation and distribution of natural resources of the area in question are matters to be decided by the international community and are not to be left to the initiative and discretion of individual states or their nationals. Similar provision is found in the 1982 Law of the Sea Convention that operates the International Sea-bed Authority created by the concept of CHM. According to the Moon Treaty international regime will be established as the exploitation of the natural resources of the celestial bodies other than the Earth is about to become feasible. Before the establishment of an international regime we could imagine moratorium upon the expoitation of the natural resources on the celestial bodies. But the drafting history of the Moon Treaty indicates that no moratorium on the exploitation of natural resources was intended prior to the setting up of the international regime. So each State Party could exploit the natural resources bearing in mind that those resouces are CHM. In this respect it would be better for Korea, now not a party to the Moon Treaty, to be a member state in the near future. According to the Moon Treaty the efforts of those countries which have contributed either directly or indirectly the exploitation of the moon shall be given special consideration. The Moon Treaty, which although is criticised by some space law experts represents a solid basis upon which further space exploration can continue, shows the expression of the common collective wisdom of all member States of the United Nations and responds the needs and possibilities of those that have already their technologies into outer space.

• The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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• v.13 no.3
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• pp.165-167
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• 2008

• Proceedings of the Korea Committee for Ocean Resources and Engineering Conference
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• 2002.10a
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• pp.45-50
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• 2002

This study presents a modeling method to predict fate of resuspended sediment in the development of deep-sea mineral resources. Resuspended deep-sea sediment during the development is considered a major environmental problem. In order to quantitatively analyze the resuspended sediment in the water column, particle size distribution (PSD) is considered an important factor. The model developed here includes PSD and coagulation process, as well as sedimentation process. Using the model, basic simulation was performed under representative environmental setting. The simulation showed the dynamics of change of particle size distribution for 50 m depth of water column up to 10 days of simulation time. Coagulation seemed an important factor in the fate of resuspended deep-sea sediment.