• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2008년도 추계종합학술대회 B
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• pp.555-558
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• 2008

For trying to frontal attack of new solution by fusion of technical tasks and conditions with it's solving methods of the essential tasks of marine resource development and environmental conservation in addition with elements of electronic high-technologies, the skimmer robot was proposed by using of oil spill disaster prevention and its disposal system with sequentially circular collection type of magnetic oil spill adsorbent powder and fabrics on the electronic barge robot for the scheme of sustainable development of environment-friendly technology. It was verified from the experiment of electronic barge robot demonstrator that the skimmer system of magnetic oil spill adsorbent powder and fabrics was very effective and useful technique to collect oil spill samples. At this point, the barge-based electronic remote control was very useful system operating easily on the marine fields to skim oil spill with dangerous toxic substances of crude oil and very harmful to human. Therefore, fusion technology proposed in this study combined with electronic and marine technology is the novel contributable technology for developing marine environmental conservation and environment-friendly disaster prevention, and also its management techniques.

• 해양환경안전학회지
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• 제7권2호
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• pp.23-37
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• 2001

Marine environment has been polluted and damaged by many sources such as industrial waste, natural seepage, oil spill and offshore production etc. Among them, oil spill from oil tankers is one of most harmful sources to marine lives as its input amount is huge at a limited area for short period. In Korea, the port of Yeosu is known to be very vulnerable to oil spill with large amount of petroleum transported across the harbour. In this regards, the author analyzed and reviewed marine environment and appropriate response to marine oil spill at this area. For these purposes, oceanographic and meteorologic features as well as regional characteristics of harbor facilities, shipping routes, marine traffic and fisheries were investigated, also traffic densities were analyzed in order to check marine accident probabilities making direct observations for 72 hours visual1y and by portable radar.

• 한국해안해양공학회:학술대회논문집
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• 한국해안해양공학회 1998년도 정기학술강연회 발표논문 초록집 Annual Meeting of Korean Society of Coastal and Ocean Engineers
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• pp.40-44
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• 1998

Since oil spills discharged by offshore oil production platforms, ship accidents etc., cause many environmental problems, forecasts of drift and spreading of the spilled oil are requested as a basis for oil spill combat management. The numerical approach has been thought as the most effective methods of such forecast. In general, the oil spill model takes into account the trajectory and fate of oil, including drifting, spreading, evaporation, dispersion, emulsification, shoreline standing, and so on. (omitted)

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2006년도 Proceedings of ISRS 2006 PORSEC Volume II
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• pp.985-988
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• 2006

Oil spills cause huge material damage. Oil and oil products spills may occur at any stage of the offshore oil production and transportation cycle. Therefore taking into account the current trends of oil production, the task of creating a system for shelf and tank fleet monitoring becomes very crucial today. This document describes the technology being implemented to improve oil spill monitoring and surveillance, to ensure SAR data fast acquisition and processing and to develop geographic information systems in support of spill response decision making. The results of technology implementation are also presented below.

• 대한원격탐사학회지
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• 제37권5_3호
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• pp.1475-1490
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• 2021

SAR 이미지의 통계적 특징을 이용하여 유류오염영역을 특정하는 방법은 분류규칙이 복잡하고 이상값에 의한 영향을 많이 받는다는 한계가 있어, 최근 인공신경망을 기반으로 유류오염영역을 특정하는 연구가 활발히 이루어지고 있다. 하지만, 다양한 유류오염 사례에 대해 모델의 탐지 성능 및 특성을 평가한 연구는 부족하였다. 따라서, 본 연구에서는 기본적인 구조의 CNN인 Simple CNN과 픽셀 단위의 영상 분할이 가능한 U-net을 이용하여, CNN의 구조와, 유류오염의 분포특성에 따른 모델의 탐지성능차이가 존재하는지 분석하였다. 연구결과, 축소경로만 존재하는Simple CNN과 축소경로와 확장경로가 모두 존재하는U-net의 F1 score는 86.24%와 91.44%로 나타나, 두 모델 모두 비교적 높은 탐지 정확도를 보여주었지만, U-net의 탐지성능이 더 높은 것으로 나타났다. 또한 다양한 유류오염 사례에 따른 모델의 성능 비교를 위해, 유류오염의 공간적 분포특성(유류오염 주변의 육지의 분포)과 선명도(유출된 기름과 해수의 경계면이 뚜렷한 정도)를 기준으로, 유류오염 발생사례를 4가지 유형으로 구분하여 탐지 정확도를 평가하였다. Simple CNN은 각각의 유형에 대해 F1 score가 85.71%, 87.43%, 86.50%, 85.86% 로 유형별 최대 편차가 1.71%인 것으로 나타났으며, U-net은 동일한 지표에 대해 89.77%, 92.27%, 92.59%, 92.66%의 F1 score를 보여 최대 편차가 2.90% 로 두 CNN모델 모두 유류오염 분포특성에 따른 수치상 탐지성능의 차이는 크지 않은 것으로 나타났다. 하지만 모든 유류오염 유형에서 Simple CNN은 오염영역을 과대탐지 하는 경향을, U-net은 과소탐지 하는 경향을 보여, 모델의 구조와 유류오염의 유형에 따라 서로 다른 탐지 특성을 가진다는 것을 확인하였고, 이러한 특성은 유류오염과 해수의 경계면이 뚜렷하지 않은 경우 더 두드러지게 나타났다.

• 수산해양교육연구
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• 제27권6호
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• pp.1693-1703
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• 2015

This study is aimed to retain objectivity and generality against consumer perception about seafood of Hebei Spirit oil spill incident area, and analyze gap of consumer perception in according to confidence level of seafood using ordinal logit model. As results, This article have three implications. First, Consumer don't have high confidence level in comparison with previous research. Second, It is important to retain confidence of quality for purchasing seafood of oil spill incident area. Third, Consumer perception is improved positively against seafood of oil spill area. But This study has limits that don't take regional opinion and situation into account.

• 해양환경안전학회:학술대회논문집
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• 해양환경안전학회 2017년도 추계학술발표회
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• pp.93-94
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• 2017

• Environmental Analysis Health and Toxicology
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• 제16권2호
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• pp.57-66
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• 2001

Marine organisms such as fish (Sebastes schlegeli) and mussels were cultured in sea water tanks placed at Dukpo area which was contaminated by the two oil spill accidents. Results showed that PAHs concentrations in flesh tissue were higher than in fish fiver. This was explained by the cytochrome P45O 1A induction in fish limier after PAHs exposure. Other studies showed that higher PAHs levels were detected in mussels cultures in oil contaminated area than in control site. From these results, we concluded that Dukpo area is still polluted by oil including PAHs and it takes a long time to recover of oil contamination after the oil spill accidents.

• Journal of Ship and Ocean Technology
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• 제1권2호
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• pp.41-49
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• 1997

We reviewed various oil-spill models and condensed the integrated information into a prediction model, “Green Sea Ranger”which is applicable to Korean coastal area. The developed software consists of pre- and post-modules for environment setup and display of results and main module for the prediction of oil\`s fate. In the pre-module target areas can be selected from the included geographic information system and various environmental and optional numerical data for the prediction can be input through easy GUI or imported from the database we established. For the fate of the spilt oil we included effects of spreading, advection, evaporation, and emulsification. Preliminary numerical experiment has proved that the developed oil-spill prediction system can be easily utilized in on-site oil recovery operations which usually require a quick and reasonable prediction.

• 해양환경안전학회지
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• 제21권3호
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• pp.309-314
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• 2015

A sunken ship often involves an oil spill. This paper was carried out to minimize environmental and cost damages stemming from oil spil of sunken shipl. Through the analysis of both the standards of the oil tank system and installation, we have identified potential oil spill sites and proposed a remedy of prevention. The result of study, the air pipes of the oil tank are a vulnerable point for oil spill. Also, the remote control devices of emergency shut-off valve have poor accessibility at abandon ship, making it difficult to shut off the emergency shut-off valve. Thus, we propose the addition of a remote quick closing valve in the air pipe and the building of a central control system.