• Proceedings of KOSOMES biannual meeting
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• 2018.06a
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• pp.100-101
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• 2018

• Journal of the Korean Society of Marine Environment & Safety
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• v.27 no.5
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• pp.618-629
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• 2021

The Fukushima nuclear power plant (NPP) accident caused by the East Japan Earthquake in 2011 and the recent increase in the frequency of earthquakes in Korea have caused safety concerns regarding radionuclide exposure. In addition, the Tokyo Electric Power Company (TEPCO) in Japan recently decided to release radionuclide-contaminated water from Fukushima's NPP into the Pacific Ocean, raising public concerns that the possibility of radionuclide contamination through both domestic- and foreign fishery products is increasing. Although many studies have been conducted on the input of artificial radionuclides into the Pacific after the Fukushima NPP accident, studies on the distribution and accumulation of artificial radionuclides in marine products from East Asia are lacking. Therefore, in this study, we attempted to explore recent research on the distribution of artificial radionuclides (e.g., ¹³⁷Cs, ^239+240Pu, ⁹⁰Sr, and etc.) in marine products from Korean seas after the Fukushima NPP accident. In addition, we also discuss future research directions as it is necessary to prepare for likely radiation accidents in the future around Korea associated with the new nuclear facilities planned by 2030 in China and owing to the discharge of radionuclide-contaminated water from the Fukushima NPP.

• Proceedings of the Korea Water Resources Association Conference
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• 2011.05a
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• pp.250-250
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• 2011

지정학적으로 3면이 바다로 접하고 있는 우리나라 해안가 주변의 원자력발전소는 관류형 냉각 방식(Once-through cooling System)을 채택하고 있기에, 이 계통을 통과한 냉각수는 주변해역으로 흘러들어가 주변 환경에 영향을 줄 수 있다. 또한 동해 주변 인접국들의 활발한 원자력 이용과 방사능 물질의 수송 등으로 인해 방사능 사고 위험이 증대됨에 따라 동해 원전 주변의 해양방사성물질 거동에 대한 필요성이 제기되고 있다. 이에 따라 동해의 해양환경을 조사 분석하여 해역에서의 오염 물질의 거동 파악이 중요하고, 산업시설 주변 연안의 오염물 이동 및 해석을 위해 오염물의 시 공간적으로 농도를 추정하는 것이 중요한 사항이다. 따라서 본 연구에서 수직 수평적으로 2차원 및 3차원화가 용이한 EFDC 모델을 사용하였다. 국립해양조사원에서 발간하는 DC103의 수치해도를 이용하여 모델영역은 동서방향으로 171km, 남북방향으로 235km로 설정하고, 격자간격은 $1km{\times}1km$의 정방향 격자를 사용하여 동해 월성 주변의 조위 시계열 검증 및 조화분석을 통한 검증을 실시한 결과 관측한 결과와 양호한 재현성을 나타내었다. 또한 국립수산과학원에서 제공되고 있는 년별 수온, 염분 자료 등의 해양환경과 지형적 특성을 고려하여 오염 물질의 이동 경로를 파악함으로써 사고시 피해를 줄이고자 한다.

• 한국해양학회지
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• v.28 no.2
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• pp.132-136
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• 1993

Attempt was made to identify potential pollutants in Korean Sean and to assess their environmental qualities. Existing pollution data for these Seas so scarce that environmental quality assessment was not possible. However, numerous pollutants were identified. Among them, heat and radioactivity from electric power plants, organic wastes from ocean dumping and land based sources, and accidentally spilled oils are suspected to be of most concern.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2021.11a
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• pp.46-47
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• 2021

항로표지 기반 정보의 디지털화 및 표준화를 위해 개발 중인 스마트 항로표지는 단순한 항로표지 및 수집 하드웨어가 아닌 해양정보 플랫폼의 개념으로, 해양에서 분석하고 싶은 정보가 있을 경우 스마트 항로표지에 센서 등을 설치하여 정보를 분석할 수 있다. 이에 항로표지를 이용하여 방사능, 미세플라스틱 및 해양부착생물에 관련된 정보를 생성하여 일반사용자, 기관 및 연구자에게 제공함으로써 일본 오염수 해양 방출, 플라스틱 사용의 증가로 인해 발생하는 미세플라스틱 및 지구온난화 등의 기후변화로 인한 해양 생태계 및 환경의 변화에 대응하고자 한다.

• Nuclear industry
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• v.15 no.9 s.151
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• pp.44-50
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• 1995

옛소련 및 러시아의 방사성폐기물 동해투기와 관련하여 당사국인 한국$\cdot$러시아$\cdot$일본 등 3국은 공동조사단을 구성하여, 지난해 3월 18일$\~$4월 16일까지 30일 동안 방사성폐기물 투기해역의 7개 정점에 대한 방사능오염도를 조사했다. 조사결과 투기해역의 해수$\cdot$해저퇴적물$\cdot$해양생물 중의 $^{137}Cs, ^{90}Sr, ^{239, 240}Pu$ 함량은 방사능낙진 정도의 수준으로 나타나 아직까지는 뚜렷한 방사능오염이 없는 것으로 밝혀졌다. 다음은 그 조사결과의 내용이다.

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2001.05a
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• pp.248-249
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• 2001

인공방사성 물질이 해양으로 유입되는 경로는 대기권 핵실험에 의한 낙진, 원자력 관계시설에서 액체 방사성물질의 유출, 방사성패기물의 해양 투기 등이 있다. 현재 해양에서 검출되고 있는 인공방사성 핵종은 대부분이 과거의 핵폭발실험에 의해 해양으로 유입된 방사능 물질이 해양내에서 이동되어 검출되는 것으로 볼 수 있다. 이들 핵종 중에서 반감기가 긴 핵종($^{137}$Cs, $^{90}$ Sr, $^{238}$ Pu, $^{239+240}$ Pu)은 방사능 오염의 좋은 지표 일 뿐만 아니라 연안퇴적물의 거동과 분포를 이해하는데 유용하다. (중략)

• Journal of Navigation and Port Research
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• v.47 no.3
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• pp.174-181
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• 2023

Five local governments along the Korea-Japan Sea (Jeju, Jeonnam, Gyeongnam, Busan, Ulsan) operate a joint countermeasure committee regarding the marine discharge of contaminated water from the Fukushima nuclear power plant by Japan's Tokyo Electric Power Plant. This study compared and analyzed citizen surveys, response strategies, and detailed action plans conducted by the Jeju Research Institute, Busan Research Institute, and Ulsan Research Institute as part of a study on countermeasures for the marine discharge of contaminated water from the Fukushima nuclear power plant in Japan. The purpose was to present basic data for the preparation of effective measures. As a result of the perception survey, all citizens of local governments showed a strong negative perception of marine discharge regardless of scientific research results, and it is expected that future fisheries and tourism industries will suffer great damage. In response strategies for each local government, building a control tower was found to be the most urgent task common to all local governments. It is judged that this is because it is necessary to break away from the organization-centered system and to respond to the function-centered system for effective response. In terms of response methods, while Jeju and Busan established response plans for each sector, Ulsan City focused on practical responses with step-by-step response measures according to the release time. In terms of content, the establishment of a marine product radiation inspection system and publicity to relieve public anxiety were important. As the marine discharge of contaminated water from the Fukushima nuclear power plant is scheduled to continue until 2030, strengthening the network for sharing research results and achievements among local government research institutes was deemed necessary.

• Journal of Advanced Navigation Technology
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• v.12 no.6
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• pp.611-618
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• 2008

The development of information society together with information telecommunication's influence on the human society is a ripple effect and getting wider. Among those ripple effects the disaster prevention is in the public eye in the present day. On the way to the ubiquitous society the main techniques to be concerned in ubiquitous sensor networks are the field of damage of storm and flood, safety facilities, traffic safety, industrial safety, energy safety, fire fighting, specific safety of radioactivity escape incident, environmental pollution, sea pollution, mountain and forrest disaster so on. In this paper the USN technique based on the disaster prevention communication technology service and its requirement technology and application are studied.

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.34 no.6
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• pp.198-210
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• 2022

The southern strait of Jeju is a divergence point of the Tsushima Warm Current (TWC), and it is the starting point of the thermohaline circulation in the waters of the Korean Peninsula, affecting the size and frequency of marine disasters such as typhoons and tsunamis, and has a very important oceanographic impact, such as becoming a source of harmful organisms and radioactively contaminated water. Therefore, for an immediate response to these maritime disasters, real-time ocean observation is required. However, compared to other straits, in the case of southern Jeju, such wide area marine observations are insufficient. Therefore, in this study, surface current field of the southern strait of Jeju was calculated using High-Frequency radar (HF radar). the large surface current field is calculated, and post-processing and data improvement are carried out through APM (Antenna Pattern Measurement) and FOL (First Order Line), and comparative analysis is conducted using actual data. As a result, the correlation shows improvement of 0.4~0.7 and RMSE of about 1~19 cm/s. These high-frequency radar observation results will help solve domestic issues such as response to typhoons, verification of numerical models, utilization of wide area wave data, and ocean search and rescue in the future through the establishment of an open data network.