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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of the Korean Society of Marine Environment & Safety
Journal Basic Information
Journal DOI :
The Korean Society of Marine Environment and safety
Editor in Chief :
Volume & Issues
Volume 17, Issue 4 - Dec 2011
Volume 17, Issue 3 - Sep 2011
Volume 17, Issue 2 - Jun 2011
Volume 17, Issue 1 - Mar 2011
Selecting the target year
Analysis on Impact and Recovery Effectiveness of Hebei Sprit Oil Spill Accident for Living and Production Environment
Lee, Moon-Suk ; Kwon, Suk-Jae ;
Journal of the Korean Society of Marine Environment & Safety, volume 17, issue 1, 2011, Pages 1~6
DOI : 10.7837/kosomes.2011.17.1.001
The underlying principle of environmental conservation and restoration is to receive continuous services from nature. In this context, the basic objective of oil spill response and recovery activities is to allow affected residents to retain sustainability of their daily livelihood and productive environment. Hence, monitoring the status of socio-economic impact and the extent of restoration is an important parameter in the restoration effort to repair the damaged functions of environmental services with oil spill accident. However, assessment of socio-economic impact poses investigators with much difficulties in selecting the most appropriate approaches because the process often involves various stakeholders, directly and indirectly. Moreover, the analyses and interpretation of the results also pose a great challenge. The present study monitored fisheries and tourism numbers which were considered as major local socio-economic indicators of living and production environment affected by M/T Hebei Spirit oil-spill accident. This monitoring was conducted by examining the published papers and statistical reports. This was supplemented by surveying how the local residents actually felt about the damage and recovery for the first time in Korea. The results showed that the rate of the recovery was about 40~50 %, and the rate of the recovery seemed to be slowed or decreased. However, what the local residents actually felt was 2~10 points less than the literature surveys and statistical reports. These results suggested limits to using only the literature and statistical surveys for the traditional socio-economic impact assessment. The study also showed the need to include in the impact assessment process what and how the local residents actual feel about the oil spill damage and recovery process.
Numerical Simulation for the Prediction of PAHs in Jinhae Bay using EMT-3D Model
Kim, Dong-Myung ;
Journal of the Korean Society of Marine Environment & Safety, volume 17, issue 1, 2011, Pages 7~13
DOI : 10.7837/kosomes.2011.17.1.007
The behavior prediction of PAHs in Jinhae Bay using a three-dimensional ecological model(EMT-3D) was examined. A three-dimensional ecological model(EMT-3D) was applied to the simulation of PAHs behaviors in Jinhae Bay of Korea. The computed results of simulation were in good agreement with the observed values. The result of sensitivity analysis showed that photolysis coefficient and extinction coefficient were important factors in the variation of dissolved PAHs, and POC partition coefficient was important factor in the variation of PAHs in particulate organic matter. In the case of PAHs in phytoplankton, bioconcentration factor of plankton was the most significant and the most effective in all. In simulations of 30%, 50% and 80% reduction in total loads of PAHs, the concentrations of dissolved PAHs were shown to be lower than 24 ng/L, 20 ng/L and 16 ng/L, respectively.
Species Composition and Seasonal Variation of Fish Assemblages in Sargassum Beds in Gamak Bay, Korea
Yoon, Ho-Seop ; An, Yun-Keun ; Choi, Sang-Duk ;
Journal of the Korean Society of Marine Environment & Safety, volume 17, issue 1, 2011, Pages 15~21
DOI : 10.7837/kosomes.2011.17.1.015
Species composition and seasonal variation of fish assemblages in Sargassum beds in Gamak Bay was determined using fish samples collected monthly by a surrounding net from October 2008 to September 2009. A total of 21 species, 582 individuals and 5,345.1 g of fishes were collected during the study period and Perciformes accounted for 47.6 % of the total number of species. Takifugu niphobles, Engraulis japonicus and Lateolabrax japonicus predominated in number, accounting for 55 % of the total number of individuals. Higher number of species and individuals occurred in June and in September-October. Species were grouped into three by cluster analysis: A) dominant species such as Leiognathus nuchalis and Takifugu niphobles, B) fish collected mainly in spring such as Sebastes inermis, Chaenogobius heptacanthus, Pterogobius zonoleucus, Pholis nebulosa, and Trachyrhamphus serratus, and C) fish collected mainly in autumn such as Engraulis japonicus, Lateolabrax japonicus, and Hyporhamphus sajori.
Theoretical Study on Assessment of Tidal Stream Resources
Yang, Chang-Jo ;
Journal of the Korean Society of Marine Environment & Safety, volume 17, issue 1, 2011, Pages 23~28
DOI : 10.7837/kosomes.2011.17.1.023
This paper outlines extraction potential of tidal stream resources from the simplified channel in which flow is driven by a head difference between inlet and outlet. Energy extraction alters the flow within a simple channel, and extraction of 10% energy flux in a natural channel would give rise to a flow speed reduction of about 5.7%. If 20% of the undisturbed energy flux is extracted, the flow speed is reduced by 11.3%. The simple channel also suggests that extractable energy might be higher if flow speed reductions are considered acceptable.
Characteristics of Flow Field at Curved Section of Oil Fence using PIV Measurements and CFD Simulations
Kim, Tae-Ho ; Jang, Duck-Jong ; Na, Sun-Chol ; Bae, Jae-Hyun ; Kim, Dae-An ;
Journal of the Korean Society of Marine Environment & Safety, volume 17, issue 1, 2011, Pages 29~37
DOI : 10.7837/kosomes.2011.17.1.029
PIV measurements of the velocity field, pressure field, vorticity, and turbulent intensity in the rear of curved section of an oil fence with current speed showed that the flow directions in the rear of flow boundary area were similar to those in the front of it. As the current speed increased, the patterns of pressure distribution were changed, and the turbulent flow became more irregular. CFD simulations under the same conditions as the PIV tests showed that the flow patterns of the wake were similar to those by PIV tests in speed of 0.3 m/s and less, but were distinctively deviated from those in 0.4 m/s due to the flexibility of the oil fence, which was not properly taken care of in CFD modeling.
Exploring Management Policy Tools Contingent on the Coastal Zoning Types
Choi, Sung-Doo ; Kim, Young-Bu ;
Journal of the Korean Society of Marine Environment & Safety, volume 17, issue 1, 2011, Pages 39~45
DOI : 10.7837/kosomes.2011.17.1.039
This study aims at proposing and developing the coastal management policy tool package contingent upon coastal community circumstance so that coastal regional government may enhance the efficiency of coastal administration and reestablish the coastal region master plan systematically. The 8 coastal policy tools of the already-tested U. S. coastal region government will be utilized as the new alternative on behalf of the Korean coastal region government. According to the result of experts survey, these tools especially can be used effectively in the tourism, disaster, restoration, and scenary coastal function types. Although this study is exploratory, it will be expected to contribute as the basic survey results of the successive research and coastal region policy development in Korea.
Coastal State's Jurisdiction over Suspected Vessels on the High Seas - In relation to the case of F/V Jin Yinn in USA -
Kim, Jong-Goo ;
Journal of the Korean Society of Marine Environment & Safety, volume 17, issue 1, 2011, Pages 47~52
DOI : 10.7837/kosomes.2011.17.1.047
On the high seas, under international law, a ship is subject to the jurisdiction of the state whose flag she flies. Vessels of any flag are free to navigate the high seas without interference from other states. Thus, there are certain limits of coastal state's exercising law enforcement jurisdiction over a foreign flag vessel on the high seas. However, there are exceptions to exclusive flag state jurisdiction. One of them is the theory of constructive presence. The other is theory of partial execution. Korea Coast Guard's law enforcement authority should be exercised more actively based on those theories supported by the international cases.
Assessment of Port Development Priority with Conflicts among Decision Makers -From the Perspective of Environment-friendly Port Development-
Jang, Woon-Jae ;
Journal of the Korean Society of Marine Environment & Safety, volume 17, issue 1, 2011, Pages 53~60
DOI : 10.7837/kosomes.2011.17.1.053
In this study, the priority was assessed and the compensation relationships were analyzed with regard to the issue of port development with conflicts among decision makers. First, the assessment factors were selected by the relevant literatures on port development, and fuzzy structure modeling was used to select assessment factors via structuralization analysis. Second, the local residents, port users, and local government were chosen as the main port-development related entities, and the analytic hierarchy process was used to calculate the total assessment value. Third, the justice based on majority power rule method was used as an assessment method that would minimize the amount of complaints according to the total assessment results and the alternative selection when a partnership was formed among the assessment entities. Moreover, the compensation issue according to the alternative selection was quantified, and the compensation relationships were analyzed. As a result, it was found that port development in Busan must be the top priority in terms of port development in South Korea, that awareness of environmental issues must be promoted among the port users, and that the local governments must promote environmental incentive policies for Environment-friendly port development.
A Study on the Effect of Designated Domestic Traffic Separation Scheme(TSS) -Focused on the Marine Casualty & the Marine Traffic Flow-
Kim, Chol-Seong ; Jeong, Jae-Yong ; Lee, Hong-Hoon ;
Journal of the Korean Society of Marine Environment & Safety, volume 17, issue 1, 2011, Pages 61~68
DOI : 10.7837/kosomes.2011.17.1.061
The "ship's routeing" system was adopted by IMO and has been operated on the major sea routes of all over the world for the prevention of marine casualty and the improvement of marine traffic flow. Thereupon, also in Korea, the "Hong-do" and "Bogil-do" sea routes on southern coast were designated to mandatory sea area by traffic separation scheme(TSS) in 2003, and the "Geomun-do" sea route on southern coast was designated in 2005. But there were few or no studies on the effect of designated traffic separation scheme in Korea. For this reason, in this paper, we evaluated the contribution of traffic separation scheme to the prevention of marine casualty and the improvement of marine traffic flow after designation of domestic traffic separation scheme using data of the marine casualties and ship's tracks from AIS information. The results of evaluation showed that on the contrary, the cases of marine casualties were increased on some sea routes and regular traffic flows were disturbed by some vessels after designation of traffic separation scheme. For the safer and better sea routes, alternative ideas such as reposition of ship's routing on "Hong-do" and "Bogil-do" sea areas were suggested.
A Study on the Effects of an Increase in the Height of Ship's Accommodation Area on Safe Evacuation in Emergency Situation
Kim, Won-Ouk ; Kim, Jong-Su ;
Journal of the Korean Society of Marine Environment & Safety, volume 17, issue 1, 2011, Pages 69~73
DOI : 10.7837/kosomes.2011.17.1.069
Unlike land fires, Fires on board a ship are not likely to be extinguished by skilled human resources using a variety of fire fighting equipments, but have to be brought under control on board a ship itself despite of difficult task. There are more cases of deaths from suffocation by smoke than from an increased temperature by heat in fires on board ships, because crew fail to secure a sufficient visibility range enough to escape from the scene of a fire or to leave the ship as early as possible. On the assumption that the height of ship's accommodation area increases from 2.0m to 2.3m comparable to the height of apartments on the ground in Korea, behaviors of fire smokes between the cases of 2.0m and 2.3m heights were compared and analyzed. Based on the blue print of the existing Training Ship "Hanbada", a new blueprint with the 30 cm height adjustment was additionally created. FDS (Fire Dynamic Simulator), which was created by the NIST in the United States and is the most widely distributed simulator for fires, was used to conduct a simulation and predict results. The results of simulation on the basis of temperature of
showed a safe evacuation period of time at the position 10m apart from the scene of a fire to increase by 55.8 seconds, when the height of ship's accommodation area increased from 2.0m to 2.3m. The results of simulation on the basis of visibility range of 6m showed the safe evacuation periods of time at the positions 10m, 20m and 30m apart from the scene of a fire to increase by 27.1 seconds, 109.2 seconds and 73.3 seconds, respectively, as the height of ship's accommodation area increased from 2.0m to 2.3m. This means that crew can escape more safely from a scene of fires on board when the height of ship's accommodation area is increased and equal to the height of living room in a building on land.
Optimal Rotor Blade Design for Tidal In-stream Energy
Yang, Chang-Jo ;
Journal of the Korean Society of Marine Environment & Safety, volume 17, issue 1, 2011, Pages 75~82
DOI : 10.7837/kosomes.2011.17.1.075
Marine current energy is one of the most interesting renewable and clean energy resources that have been less exploited. Especially, Korea has worldwide outstanding tidal current energy resources and it is highly required to develop tidal in-stream energy conversion system in coastal area. The objective of study is to investigate harnessing techniques of tidal current energy and to design the a 100 kW horizontal axis tidal turbine using blade element momentum theory with Prandtl's tip loss factor for optimal design procedures. In addition, Influence of Prandtl's tip loss factor at local blade positions as a function of tip speed ratio was studied, and the analysed results showed that power coefficient of designed rotor blade using NACA 63812 was 0.49 at rated tip speed ratio.
Harmonic Analysis of Power Conversion System for Torque and Speed Changing of Electric Propulsion Ship
Kim, Jong-Su ; Kim, Seong-Hwan ;
Journal of the Korean Society of Marine Environment & Safety, volume 17, issue 1, 2011, Pages 83~88
DOI : 10.7837/kosomes.2011.17.1.083
There are various environmental conditions under which ship may navigate over ocean or in harbor. Ship's torque and speed change frequently under the voyage conditions. In this case, harmonics is created in the electrical power systems. The major adverse impacts of voltage and current harmonics in the electrical power systems on generator, transformer, converter, inverter and propulsion motor lead to the increase of machine heating caused by iron and copper losses which are dependent on frequency. In this paper, an analysis of THD(total harmonic distortion) for currents and voltages in the propulsion equipment was carried out. The THD and torque ripple in the input currents of the propulsion motor have been confirmed by the simulation results.