• 해양환경안전학회지
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• 제5권1호
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• pp.9-18
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• 1999

To predict the oil spill dispersion phenomena in the ocean, the oil spill response model, which can be used for strategic purpose on the oil spill site, based on Lagrangian particle-tracking method was formulated and applied to the neighboring area with Pusan port where the oil spill incident occurred when the tanker ship No.1 Youil struck on a small rock near the Namhyungjeto on September 21, 1995. The real-time tidal currents to be required as input data of the oil spill model were obtained by the two-dimensional hydrodynamic model and the tide prediction model. Evaluation of tidal currents using observation data was successful. For wind data, other input data of oil spill model, observed data on the spot were used. To verify the oil spill model, the oil spill modelling results were compared with the field data obtained from the spill site. Compared the modelling results with the observation data, there exist some discrepancies but the general pattern of modelling results was similar to that of field observation. The modelling results on 7 days after spill occurred showed that the 40% of spilled oil is in floating, 36% in evaporated, 23% at shore, and 1% in out of boundary, respectively. According to the evaluation of weighting curves of effective components to the dispersion of oil, the winds make a 37% of contribution to the dispersion of oil, turbulent diffusion 39.5%, and tidal currents 23.5%, respectively. Provided the more accurate wind data are supported, more favorable results might be obtained.

• 인터넷정보학회논문지
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• 제10권6호
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• pp.173-189
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• 2009

최근 UCC를 중심으로 동영상 데이터에 대해 사람들의 관심이 증가하고 있다. 따라서 동영상 데이터의 내용-기반 검색을 지원하는 효율적인 색인 기법이 요구된다. 그러나 Hybrid Spill-Tree를 제외한 대부분의 색인 기법들은 대용량의 고차원 데이터를 다루는데 비효율적이다. 본 논문에서는 동영상 데이터의 내용-기반 검색을 지원하기 위한 효율적인 고차원 색인 기법을 제안한다. 제안하는 고차원 색인 기법은 기존 Hybrid Spill-Tree을 기반으로 새롭게 제안하는 클러스터링 방법과 시그니쳐를 이용한 데이터 저장 방법을 결합하여 확장된 색인 기법이다. 또한 제안하는 시그니쳐-기반 고차원 색인 기법이 기존 M-Tree 및 Hybrid Spill-Tree에 비해 성능이 우수함을 보인다.

• 한국항해항만학회지
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• 제35권9호
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• pp.735-740
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• 2011

It is necessary to develop the one stop system in order to protect our marine environment rapidly from oil spill accident. The purpose of this study is to develop real time database for oil spill prediction modeling and implement real time prediction modelling with ESI and server-client GIS based user interface. The existing oil spill prediction model cannot provide one stop information system for public and government who should protect sea from oil spill accident. The development of multi user based information system permits integrated handling of real time meteorological data from external ftp. A server-client GIS based model is integrated on the basis of real time database and ESI map to provide the result of the oil spill prediction model. End users can access through the client interface and request analysis such as oil spill prediction and GIS functions on the network as their own purpose.

• 해양환경안전학회지
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• 제3권1호
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• pp.73-83
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• 1997

To predict the oil-spill dispersion in marine waters, the oil-spill dispersion model based on Lagrangian particle-tracking method was developed and applied to Kwangyang and Jinju Bay. The tidal current movements to be required as input data of the oil-spill dispersion model were obtained by a two-dimensional numerical tidal model. Evaluation of tidal current movements using mean tide was successful. Modelling results were compared with the field data obtained at spill site. There were some descrepancies between modeling results and field data. However, the general pattern of modelling results was similar to that of field data. Provided the real-time tidal currents and more accurate wind data are supported, more favorable results can be obtained.

• Journal of Preventive Medicine and Public Health
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• 제43권5호
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• pp.387-395
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• 2010

Objectives: The purpose of this study was to compare the physical and mental health status of disaster victims according to disaster types, such as a typhoon disaster and an oil spill disaster, and to suggest adequate health care services for them. Methods: A total of 484 people who suffered disasters were selected for this study, and data were collected from July to August, 2008. The data-set for this study included 286 victims of typhoon disasters in Jeju and Jeollanamdo district in South Korea, and 198 victims of the oil spill disaster in Taean. Physical health status was measured using revised Patient Health Questionnaire and mental health status was measured using the Korean version of 'Post-traumatic Diagnostic Scale'. Results: According to the comparative analyses of typhoon disaster victims and oil spill disaster victims, poorer physical health outcomes were shown among the oil spill disaster victims when compared to the typhoon disaster victims. Also, the oil spill disaster victims showed symptoms of depression, anxiety, and post-traumatic stress disorder, at rates higher than those found among the typhoon disaster victims. Conclusions: These findings suggest that there is a need to provide adequate physical and mental health-related care services for oil spill disaster victims. The seriousness of oil spill disaster should be realized and reconsidered in developing recovery strategies and disaster preparedness for physical and mental health services.

• 대한원격탐사학회지
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• 제39권3호
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• pp.311-323
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• 2023

기름 유출 사고는 발생 시 환경과 관련된 다양한 문제들을 야기하므로 신속하게 유출유의 면적과 위치 변화를 파악하는 것이 중요하다. 광학 위성자료를 활용한 기름 유출 탐지의 경우 다양한 위성탑재 센서를 통해 유출유에 대한 정보 수집 후 이를 이용하여 광범위한 기름 유출 범위를 모니터링할 수 있다. 선행 연구에서는 파장별 기름의 반사도를 분석한 후 특정 파장대의 밴드를 이용한 oil spill index가 개발 및 적용되었다. 기름 유출 모니터링을 위해 유출 전후 여러 시기의 위성자료를 분석할 경우 다량의 데이터로 인해 많은 시간과 컴퓨팅 자원이 소비된다. 웹 브라우저를 통해 대량의 위성자료 분석이 가능한 Google Earth Engine을 활용할 경우 효율적으로 기름 유출 탐지가 가능하다. 본 연구에서는 Sentinel-2 MultiSpectral Instrument 위성자료와 클라우드 기반의 위성자료 분석 플랫폼인 Google Earth Engine을 이용하여 기존에 제안된 네 종류의 oil spill index의 다양한 피복 환경에서의 활용성 평가를 수행하였다. 지표 피복별 index 값의 비교를 통해 기름 유출 영역이 타 피복과 잘 구분되는지에 대한 분리도를 평가하고 기름 유출 면적을 산정하였다. 본 연구 결과를 통해 Google Earth Engine이 기름 유출 광역 모니터링에 효율적으로 활용 가능하다는 것을 확인하였고, 복잡한 지표 피복이 분포하는 다른 지역에 기름 유출 사고 발생 시 우수한 성능으로 평가된 oil spill index B ((B3+B4)/B2)와 C (R: B3/B2, G: (B3+B4)/B2, B: (B6+B7)/B5)의 적용은 효과적인 기름 유출 모니터링에 기여할 것으로 판단된다.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 1999년도 Proceedings of International Symposium on Remote Sensing
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• pp.243-248
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• 1999

From the lessons after the Nakhodka oil-spill in Jan. 1997, oil slick detection by using remote sensing data and assimilating the data to the simulation program is important for monitoring the oil-drift pattern. For this object, we are going to construct the oil-spill warning system for estimating the oil-drift pattern using remotesensing/numerical simulation Model. Additionally we plan to use this system for restorating oil-spill damage domestically, such as estimating the ecological damage and making the priority fur restorating the oil-spilled shoreline. This report is intended to summarize the role of geo-informatics in the oil spill accident by not only paying attention to the effect of information provision/information management via the map, but also reporting the interim result in part based on the details discussed in the processes of recovery support and environmental impact assessment during the Nakhodka's accident.

• Fisheries and Aquatic Sciences
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• 제11권4호
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• pp.212-218
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• 2008

Time series changes in the chlorophyll $\alpha$ concentrations before and after the ship Prestige oil spill on 13 November 2002 were analyzed using NCEP wind data and ocean color data. Following the oil spill, southwesterly winds pushed the oil towards the Spanish coast. In addition, the daily chlorophyll $\alpha$ concentration decreased dramatically from the middle of November to the end of December 2002, with the minimum value being recorded in December. Additionally, the mean chlorophyll $\alpha$ concentration in November and December 2002 was lower than the average value recorded for the same months from 2000 to 2005; however, with the exception of 2000, the concentration was higher in October 2002 before the spill and in January-March 2003 after the spill during the same period from 2000 to 2005.

• 해양환경안전학회지
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• 제17권4호
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• pp.375-382
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• 2011

기초자료의 획득 체계 및 가공 체계의 부재와 복잡한 사용자 입력 체계로 인해서 유출유 확산 예측 모델의 활용에 제약이 따른다. 이러한 상황에서 유류오염사고에 신속하게 대응하기 위한 과학적 방제 전략 수립은 어렵다. 본 연구에서는 현재 실정을 고려하여 유출유 확산 예측 모델 구동을 위한 최선의 상시 활용 체계를 수립하였다. 모든 기초자료를 직접 구축하고 관리하는 것이 불가능하기 때문에 외부 기관의 실시간 동적 자료를 연계하고 최소한의 데이터베이스만을 직접 구축하여 실시간 유출유 확산 예측의 상시 활용이 가능함을 확인하였다. 또한 사용자와 모델간 인터페이스부분에서 발생하는 오류를 최소화하는 사용자 입력 인터페이스와 모델 연산 결과를 시공간 측면에서 다차원적으로 분석할 수 있는 결과 표출 인터페이스를 제안하였다. 본 연구 결과로 구축된 유출유 확산 예측 모델의 상시 운용 체계는 외부 자료에 의존하기 때문에 모델 결과의 불확실성이 존재하지만, 유류오염사고 발생시 신속하게 모델을 구동하여 유출유 확산 예측을 수행할 수 있다는 측면에서 실제 방제 현장에서 의미있게 활용될 수 있다.

• 해양환경안전학회지
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• 제5권2호
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• pp.1-14
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• 1999

To find characteristics and areas of greater risk of oil spill at the coastal waters in Korea, some of risk factors were analyzed with historical data of oil spill and marine traffic. As a result, it is characterized that frequency of oil spill is increasing year by year and greatest percentage of spill source is fishing boat. It is proposed that the ports of Ulsan, Yeosu, Incheon and Pusan will be designated as primary area of risk as they have a higher risk of oil spills and its response authority is required to maintain appropriate regional response capability for prompt and effective response to a future spill incident. In addition, the regional response equipments at Ulsan are examined under a assumption of a medium size spill and it is found that the use of chemical dispersant can be an alternative when mechanical containment and recovery is not feasible in this area, and the existing response equipments may be appropriate to address that size of spill. However, the response authority is required to maintain more numbers of stronger boom for unsheltered waters and more quantity of concentrate dispersant to disperse all spilled oils on the water, furthermore the response authority should be prepared for a possible future catastrophic spill with sufficient equipments.