원자력발전소의 가동은 방사성폐기물을 발생시키고 있으며, 다른 산업폐기물과는 달리 방사능을 포함하고 있는 방사성폐기물은 처리에 오랜 시간이 걸린다. 방사성폐기물의 관리 및 처분의 주된 목적은 인간과 환경을 보호하는 것이므로, 이를 위하여 방사성폐기물의 처분은 완전히 격리된 영구적인 처분장을 필요로 한다. 이에 따라 우리나라는 단계별 발생하는 방사성폐기물의 안전한 처리를 위해 2015년 8월 28일 경북 경주시에 중·저준위 방사성폐기물을 처분할 수 있는 방사성폐기물 처분장을 준공하였다. 이 과정에서 방사성폐기물은 전용운송선박인 청정누리호를 통해 해상운송되고 있으나, 이와 관련된 법적 및 물리적 안전성을 확보하고 있지 못하여 시급한 대처가 필요한 상황이다. 이에 이 논문에서는 현 상황을 검토하고 방사성폐기물의 안전한 해상운송을 위한 선박입출항법상의 안전성 확보방안을 입법론적으로 제시하고자 한다.

본 연구는 해수유동모델을 이용하여 하계 한국 남해안 양식장 부근에서 수온의 시·공간적인 분포를 파악하였다. 한국 남해 조류의 흐름은 창조시 서향, 낙조시 동향하며, 쓰시마 난류의 흐름은 50 m보다 깊어지는 외양에서 연안에 비해 강하게 동북향 하였다. 조류, 바람, 쓰시마 난류 및 실시간 수온을 고려한 해수유동에서 하계 수온의 분포는 반폐쇄성 해역에서 26~28℃로 높게 나타났으며, 외양으로 갈수록 낮아져 18~22℃로 나타났다. 반폐쇄성 내만의 형태를 가지는 해역의 해수교환량을 계산한 결과 광양만 10,331 m³/sec, 여수-가막만 16,935 m³/sec, 그리고 거제-한산만은 13,454 m³/sec로 나타났다. 해수교환량이 적은 해역일수록 수온이 비교적 높게 나타난다.

이 연구는 국내 대륙붕 주변에서 진행되는 심해 시추의 개요 및 현황에 대하여 시추의 개념 및 종류, 대륙붕 개발의 연혁 및 현황을 중심으로 검토하였고, 시추와 관련된 해양 환경, 안전법상 적용의 범위, 문제점 등에 대하여 법적으로 분석하였다. 그리고 이 연구는 해저광물자원의 체계적인 개발을 위하여 영국의 ‘해양구조물(안전관리절차)규정’ 기초로 별도의 법률 신설 방안 및 해양환경관리법, 해사안전법, 석유광산안전규칙에 대한 개선안을 입법론적으로 제안하였다. 특히 해외 해양플랜트와 관련된 사고 사례를 기초로 국내 인력에 대한 국제인증교육에 준하는 교육훈련 및 평가 제도의 구축의 필요성을 강조하였다.

본 연구에서는 상선과 어선의 해기사, 해군의 함정장교 양성기관의 해기교육 시스템을 비교분석 함으로써 해양력 확보를 위한 해기교육 상황을 파악하였다. 분석결과 상선의 해기사 양성과정을 제외하고는 선박운영에 관한 교육과정이 상대적으로 낮은 비중을 차지하고 있었다. 선박운영에 필수적인 해기교육의 강화는 해양력 확보에 필수적이지만 인력공급이 어려운 선원직의 특수성이 교육과정에 반영된 것으로 보인다. 우수한 선원의 확보와 해기교육 문제를 해결하기 위해서는 국가차원의 관심과 지원방안이 마련되어야 할 것이다.

The objective of this study was to investigate the growth rate and the optimal stocking density of sea cucumbers. Grow-out was studied in situ by conducting a follow-up survey using visible implant elastomer (VIE) tags. The rearing systems were made of polypropylene pipe for the frames and netting. The experiment ran for 70 days near Yeosu, Korea in the water depth of about 7 m. A total of 576 sea cucumbers which have three groups of body sizes (small: 5.15, medium: 12.34 and large: 23.26 g) were used. The five groups of stocking densities (150, 300, 450, 600 and 850 g/m2) in rearing system for sea cucumber were considered. Sea cucumbers were fed a mixed diet (mud, mineral, fish meal, etc.). The feed was supplied to 10% of their body wet weight once every 7 days. The survival rate (73%) of sea cucumber in 850 g/m2 was lower than those of other density groups (150 g/m2: 89%, 300 g/m2: 84%, 450 g/m2: 78% and 600 g/m2: 86%). The survival rate of medium size group was higher than those of small and large groups regardless of the density (P<0.05). Most of density groups have no significant difference except for 850 g/m2 (P>0.05). The growth rate of small size group (0.63% day-1) was higher than those of medium (0.38% day-1) and large (0.34% day-1) group regardless of the density (P<0.05). The threshold water temperature was 11.0°C for sea cucumber growth in winter season.

The aim of this study was to determine total mercury and methyl mercury level in fishes (Deepsea Fish, Tuna, Billfish) and fishery products. A total of 101 fishes and 44 fishery products samples collected from commercial market in Gyeonggi-do. Total mercury were analysed by mercury analyzer and methyl mercury were analyzed by gas chromatography with electron capture detector. In the fishes, total mercury was detected in all samples and methylmercury was detected in 92 samples of them. The detection rate of methylmercury was 91.1% in fishes. The mean concentration (mg/kg) of total mercury and methylmercury were 1.968 ± 0.505/0.496 ± 0.057 for Billfish, 0.665 ± 0.091/0.252 ± 0.033 for Deep-sea Fish and 0.577 ± 0.085/0.218 ± 0.025 for Tuna, respectively. The Swordfish contains the highest level of total mercury (1.968 mg/kg) and methylmercury (0.496 mg/kg). In Mabled rockfish, the ratio of methylmercury’s contents about total mercury’s contents was the highest as 66.5%. In case of fishery products, frozens made of 100% of raw material contained the highest level of total mercury and methyl mercury. The weekly intake of total mercury and methylmercury was calculated in 4.72% and 5.24% of Provisional Tolerable Weekly Intake (PTWI) respectively. This study showed that the weekly intake of methylmercury from Deep-sea Fish, Tuna and Billfish was less than the PTWI recommended by the Joint FAO/WHO expert committee on food additives.

Quality changes of dried sea cucumber (Stichopusjaponicus) after applying a cyclic rehydration and retorting process were investigated during 4 weeks of storage. The length, volume, and weight of dried sea cucumber increased significantly as the number of rehydration cycles increased. Sea cucumber (SC) was bottled in the glass jar and a retort thermal process (121.1oC, 0.15 MPa) was applied. The total thermal processing time (TTT) was 24 min based on the temperature at the cold point. The size and texture of retorted SC were significantly changed until the first week of storage. However, regardless of the number of rehydration cycles, the size and texture of samples at different rehydration cycles showed no significant difference during the whole storage. The length, volume, weight, rehydration ratio (RR), hardness, and chewiness at the maximum degree of swelling during rehydration of dried SC were estimated as 100.86 mm, 38.62 mL, 41.05 g, 6.39 of RR, 249.19 gf, and 4.05 mJ, respectively.

Fishing pots are one of the important fishing gears in our coastal and offshore fisheries. In terms of a sustainable use of marine resources, there are concerns about the ghost fishing by lost pots. It is reported that 10 to 70% of the pots are abandoned or lost annually. This study is to compare the catching efficiency of drum type whelk pots that are made of biodegradable nets to those made of the ordinary nets, in the eastern coast of Korea. Five types of drum pots were used with combination of biodegradable nets and ordinary (PA, PE) nets applied to the main and funnel parts of the pots: pots with biodegradable nets (Bio+Bio); pots with PE net (PE+PE); pots with body and funnel made of biodegradable nets and PE nets respectively (Bio+PE); pots with body and funnel made of PE nets and PA nets respectively (PE+PA); pots with body and funnel made of PE nets and biodegradable net respectively (PE+Bio). Field experiments were conducted from June 18th, 2015 to August 7th, 2015 using a commercial fishing vessel in the Uljin waters on the eastern coast of Korea. Two fleets of pots with one hundred in each, 20 pots of each type, were casted for 8 to 15 days to analyze their catching efficiency. The catch of target species, whelks, was 202,563.0 g with catch rate of 38.7% of the total catch, while the bycatch was 320,709.7 g with the rate of 61.3% of the total catch. The catch of whelks was the highest in the Bio+PE pots (46,020.3 g), followed by the Bio+Bio pots (42,027.5 g), the PE+Bio pots (41,849.9 g) and the lowest being PE+PE pots (38,054.2 g). Compared to the conventional pots, the pots with biodegradable nets on the body or entrance part had slightly higher catch rate for both the target species and the bycatch. The PE+PE had the lowest catch rate. There is no significant difference in catch between the pots with biodegradable nets and the ordinary nets for the target species such as Buccinum opisthoplectum, Neptunea eulimata, Buccinum striatissimum. Consequently, using biodegradable nets for the conventional whelk pots can reduce ghost fishing by lost gears while keeping the performance of the pots.

The aim of this paper is to identify the potential benefits and obstacles of the interstate Short Sea Shipping (SSS) operation in the archipelagic Southeast Asia sub-region. Although literature has addressed a myriad of benefits and obstacles that were caused by the SSS operation as an alternative mode to unimodal land transport, it has been recognised that each SSS corridor may have its own peculiarities. Therefore, the identification of the potential benefits and obstacles through a Delphi survey among sub-regional expert respondents is expected to inform the countries of Southeast Asia on how to direct their limited resources to address the obstacles identified in order to enable a viable interstate SSS operation. The initial review of the benefits and obstacles of SSS operations will focus on case studies performed in Europe as the breadth of literature on SSS outside Europe is still limited. Hence, this study addresses the gap in the literature by focusing on SSS in archipelagic Southeast Asia particularly those involving interstate Ro-Ro operations and extending the usage of Delphi technique to the realm of interstate SSS.

동해 남서해역 퇴적물의 현장 음파전달속도를 파악하기 위하여 신호투과법을 이용하여 퇴적물의 실험실 음파전 달속도를 측정하였다. 측정된 실험실 음파전달속도는 해저면 온도, 해수 음파전달속도, Kim et al. (2004)과 Hamilton (1980) 모델을 적용하여 현장 음파전달속도로 보정하였다. Kim et al. (2004)과 Hamilton (1980)의 현장 음파전달속도는 연구지역 퇴적물 특성을 반영하며, 유사한 분포를 보인다. 현장 음파전달속도 보정에는 해저면 온도의 영향을 크게 받 는 것을 확인할 수 있다. 따라서 퇴적물의 실험실 음파전달속도를 통해 현장 음파전달속도를 파악하기 위해서는 해저 표층 온도 자료를 통한 온도 보정이 반드시 수행되어야 한다.