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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Korean Society for Marine Environment & Energy
Journal Basic Information
Journal DOI :
The Korean Society for Marine Environmental Engineering
Editor in Chief :
Volume & Issues
Volume 12, Issue 4 - Nov 2009
Volume 12, Issue 3 - Aug 2009
Volume 12, Issue 2 - May 2009
Volume 12, Issue 1 - Feb 2009
Selecting the target year
Time-elapes Change of Oil-polluted Taean Coastal Area by the Hebei Spirit Oil Spill Incident - Focusing on the Field Surveying(Vision and Photos) -
Jung, Jae-Sung ; Cheong, Cheong-Jo ;
Journal of the Korean Society for Marine Environment & Energy, volume 12, issue 3, 2009, Pages 111~123
The purpose of this study is to investigate the time-elapse change of oil-polluted Taean coastal area with by Herbei Spirit oil spill incident. From Mandae of Iwonmeyon to Padori beach of Sowonmeyon, field monitering was conducted at eleven surveying points surveying. The specific conclusions from this study are as follows. The residual oil was not founded at ten surveying points, but the crude oil remained under the ground at the Groompo beach one year passed since the oil spill. Because the efforts of volunteers over millionaires and inhabitants for cleaning and reciprocating actions of waves, the oil-polluted coastal area by Herbei Spirit oil spill incident. It is guessed that a part of stranded oil spilled from the incident was degraded by physical, chemical, and biological weathering and the residue was dispersed in tidal and subtidal zone with oil-minerals aggregates(OMA).
Diffusion Analysis for Optimal Design of Ocean Outfall System
Jung, T.S. ; Kang, S.W. ;
Journal of the Korean Society for Marine Environment & Energy, volume 12, issue 3, 2009, Pages 124~132
The optimal type and discharging position of ocean outfall of wastewater have been determined by hydrodynamic modeling, near-field dilution modeling, and far-field dispersion modeling. Tide and tidal currents have been simulated by a finite element hydrodynamic model showing good agreements with field observations. Based on the hydrodynamic simulation results candidates of ocean outfall position were preliminary determined. Submerged single port and submerged multi-port diffuser were selected as discharging system alternatives and finally designed by considering tide, tidal currents and water depth. Initial dilution of wastewater discharged from the designed ports has been estimated by CORMIX system. A 2-dimensional random-walk dispersion model has been employed to simulate far-field dispersion of discharged wastewater.
Radium Isotope Ratio as a Tracer for Estimating the Influence of Changjiang Outflow to the Northern Part of the East China Sea
Kim, Kee-Hyun ; Kim, Seung-Soo ;
Journal of the Korean Society for Marine Environment & Energy, volume 12, issue 3, 2009, Pages 133~142
In order to understand the present environmental condition and future impingement of Changjiang(Yangtze River) outflow upon the adjacent seas after the scheduled completion of the Sanxia (Three Gorges) Dam in 2009, we tried to estimate the mixing ratios among surface waters of three end-members: Changjiang Water (CW), Kuroshio Water (KW), and East China Sea Water (ECSW) using
activity ratio and salinity as tracers. Water samples were collected from 32 stations in November 2005 (R/V Tamgu 3), from 20 stations in July 2006 (R/V Ocean 2000) and from 17 stations in August 2006 (R/V Ieodo) in the northern part of the East China Sea. Radium isotopes in ~300 liters of surface seawater were extracted onboard by filtering through manganese impregnated acrylic fibers and following coprecipitation as
. Activities of radium isotopes were determined by a high purity germanium detector. Results show that the fraction of CW was in the range of 1-23% in the study area, while KW was in the range of 0-30 % and ECSW 58-100 %. The eastward plume of Changjiang outflow, commonly observed in satellite images during summer and also displayed by the eastward-decreasing CW fraction in this study, could be attributed to Ekman transport caused by the SE monsoon prevailing in this region during summer. Results of this study showed that in the drought season, there was a little or no fraction of CW in the study area. Concentration of dissolved inorganic nitrogen (DIN) showed strong positive relationship with the fraction of CW, suggesting Changjiang as the major source of nitrogen. The mixing curve of DIN indicates the removal of nitrate by biological uptake during the mixing of CW with ambient seawater in the study area.
A Study on Types and Reasons of Engine Troubles Related to Fuel Oil
Na, Eun-Young ; Baik, Shin-Young ;
Journal of the Korean Society for Marine Environment & Energy, volume 12, issue 3, 2009, Pages 143~150
Fuel oil mostly used for a ship is made from crude oil by refining process. In order to produce plenty of high-quality fuel oil, the Fluid catalytic cracking(FCC) method is widely adopted to many refinery factories during the decomposition process from high molecule into lower molecule. The major constituents in spent FCC catalysts are Si, Al, Fe, Ti, alkali metals and some others. The spent catalyst is also composed small amounts of rare metals such as Ce, Nd, Ni and V. The big problem in FCC oil is mixing the catalyst in the oil. This reason is unstable separation of FCC catalyst in separator. Such a FCC catalyst will become a reason of heavy wear down in moving parts of engine. The impurity in oil is ash and deposit compound, such as Al, Si, Ni, Fe and V, which will accelerate the wear down on fuel pump, fuel injection valve cylinder liner and piston ring. It is important to find a basic reason of an engine trouble for preventing similar troubles anymore. Insurance compensation will be different according to the reason of an engine trouble which might be natural abrasion or other external causes. In this study, types and reasons of engine troubles related to fuel oil will be covered.
Evaluation of Affecting Factors on Formation of Oil-Mineral Aggregates for Stranded Oil on Intertidal Flat
Cheong, Cheong-Jo ;
Journal of the Korean Society for Marine Environment & Energy, volume 12, issue 3, 2009, Pages 151~156
The purpose of this study is to evaluate the affecting factors on Oil-Mineral Aggregates(OMA) for stranded oil on intertidal flat, because the OMA formation enhances the oil dispersion and biodegradation rates. We choose the affecting factors such as spilled oil concentrations(50, 100, 200, 300, 400, 500 mg/L), mineral concentration(100, 200, 500, 1,000, 2,000, 4,000 mg/L), salinity(10, 20, 30, 40 psu), shaking time(1, 2, 4, 8, 12, 24 hr) and applied dispersant volume(0, 5, 10, 15, 20%). Major conclusions derived from this study are as follows. It was observed that the kaolinite interacts three times strongly with crude oil than quartz. OMA formation was enhanced with increasing of spilled oil concentrations, whereas the increase of salinity rarely affected the OMA formation. The shaking time for OMA formation affected positively with kaolinite, but quartz was irrespective the shaking time. The applied dispersant enhanced the OMA formation by 13% in kaolinite and 56% in quartz experimental condition.
Monitoring in Succession of Benthic Communities on Artificial Seaweed Beds in the Slag Dumping Area
Kim, Jin-Man ; Kwak, Seok-Nam ;
Journal of the Korean Society for Marine Environment & Energy, volume 12, issue 3, 2009, Pages 157~164
In order to rehabilitate habitats for marine organisms in the slag dumping area, succession of benthic communities was monitored on artificial seaweed beds with transplantation of Ecklonia stolonifera from April 2004 to June 2005. Acinetospora critina was only primary dominated on steel frame in the first experiment (April 2004). A total of 15 species of seaweed were identified in the second experiment (June 2004). Enteromorpha intestinalis and Enteromorpha sp. were dominated, and Urospora penicilliformis, Ulothrix flacca, Cladophora sp., and Ulva pertusa were found on Ecklonia stolonifera fronds gradually with increasing time. This time was coincided with occurrence of benthic macrofaunas, molluscans and small fish species. The epiphytic benthic macrofaunas were dominated on amphipods, molluscans were Mytilus edulis, Thais clavigera, and fish species were Mugil cephalus, Pholis nebulosa. These results indicated that transplantation of Ecklonia stolonifera on artificial seaweed beds have been contributed on restoration habitats for benthic communities in the slag dumping area.
A Linear Wave Equation Over Mild-Sloped Bed from Double Integration
Kim, Hyo-Seob ; Jung, Byung-Soon ; Lee, Ye-Won ;
Journal of the Korean Society for Marine Environment & Energy, volume 12, issue 3, 2009, Pages 165~172
A set of equations for description of transformation of harmonic waves is proposed here. Velocity potential function and separation of variables are introduced for the derivation. The continuity equation is in a vertical plane is integrated through the water so that a horizontal one-dimensional wave equation is produced. The new equation composed of the complex velocity potential function, further be modified into. A set up of equations composed of the wave amplitude and wave phase gradient. The horizontally one-dimensional equations on the wave amplitude and wave phase gradient are the first and second-order ordinary differential equations. They are solved in a one-way marching manner starting from a side where boundary values are supplied, i.e. the wave amplitude, the wave amplitude gradient, and the wave phase gradient. Simple spatially-centered finite difference schemes are adopted for the present set of equations. The equations set is applied to three test cases, Booij's inclined plane slope profile, Massel's smooth bed profile, and Bragg's wavy bed profile. The present equations set is satisfactorily verified against existing theories including Massel's modified mild-slope equation, Berkhoff's mild-slope equation, and the full linear equation.
World Interest and Activities on Marine Litter
Jung, Rho-Taek ;
Journal of the Korean Society for Marine Environment & Energy, volume 12, issue 3, 2009, Pages 173~180
After the UN General Assembly on 2006, Interest on the marine litter has rapidly increased internationally. The UN sub-organizations, UNEP/Regional Seas, FAO(Food and Agriculture Organization of the United Nations) and OC(Ocean Conservancy) as a one of world NGO had been tackled to collect information and prepared world reports related on marine litter, recently, those are published. Through the 10years experience of Korea's policy on marine litter since 1999, it is re-evaluated as a roll model internationally. In this paper, brief introduction of structure and function of Korea's authorities which are responsible for or are involved in the marine litter issue as well as the National Marine Litter Management Basic Plan which is established in 2008, has been provided. This paper also included the structure and roll of the marine litter initiative center in the plan. Change of the paradigm of action plan on marine litter in Korea already had been started.
Estimation of Countermeasures and Efficient Use of Volume of Artificial Reefs Deployed in Fishing Grounds
Kim, Ho-Sang ; Lee, Jeong-Woo ; Kim, Jong-Ryeol ; Yoon, Han-Sam ;
Journal of the Korean Society for Marine Environment & Energy, volume 12, issue 3, 2009, Pages 181~187
To estimate the status and volume of artificial reefs(ARs) deployed at the sea bottom in fishing grounds, this study assessed the initial volume of ARs, the cubic volume of AR groups, and the porosity of each AR using image data collected during a survey using a multi-beam echo sounder(MBES) and a side scan sonar(SSS). These results were compared with data collected during diver surveys and used to develop a new method and prediction formulas for countermeasures, facility volume, and efficient use of volume for deployed ARs(cubic concrete). The field survey results for nine ARs deployed in the Busan Sea region were calculated, and the average value of coefficient k(indicating the efficient use of volume ratio) among ARs was 0.753, and the correlation between coefficient k and year(Yr) of deployment was calculated as k=0.0023Yr+0.725. The relationship between these two factors was poor. In years following the deployment of artificial reefs, coefficient k and year of deployment were not correlated, in spite of the hardening ground due to subsidence and the reduced distance between ARs. Consequently, it is reasonable to suppose that coefficient k was defined by bottom surface conditions and initial deployment conditions.
Analysis of Wave Distribution at Nakdong River Estuary Depending on the Incident Wave Directions Based on SWAN Model Simulation
Park, Soon ; Yoon, Han-Sam ; Park, Hyo-Bong ; Ryu, Seung-Woo ; Ryu, Cheong-Ro ;
Journal of the Korean Society for Marine Environment & Energy, volume 12, issue 3, 2009, Pages 188~196
This study conducted numerical simulations to analyze the wave characteristics(distribution) depending on the directional changes of waves in the Nakdong river estuary by using SWAN(Simulating WAves Nearshore) model. The results from the tests are summarized as below. The wave height rates are generally highly distributed with the incident waves from the S, SSE, SSW, SE, SW in sequence. When the waves from the S, SSW, SSE directions are predominant, the bigger waves were observed in front of sandbars. According to the results of the wave steepness against the wave direction, at the east coast of Gadeok island(northwest of Nakdong estuary), where has mild seabed slopes, the wave height rates distribute in the range of 0.4~0.6; the wave height rates over the west coastal region of Dadeapo(southeast of Nakdong estuary) are 0.5~0.6. The wave height rate tends to be rapidly decreased over the east region of Nakdong river estuary rather than its west region.
Numerical Simulation on Phase Separation by Using the Lattice-Boltzmann Method
Jung, Rho-Taek ;
Journal of the Korean Society for Marine Environment & Energy, volume 12, issue 3, 2009, Pages 197~201
As one of the promising model on the multiphase fluid mixtures, the Lattice-Boltzmann Method(LBM) is being developed to simulate flows containing two immisible components which are different mass values. The equilibrium function in the LBM can have a nonideal gas model for the equation of state and use the interfacial energy for the phase separation effect. An example on the phase separation has been carried out through the time evolution. The LBM based on the statistic mechanics is appropriate to solve very complicated flow problems and this model gives comparative merits rather than the continuum mechanics model.
Tidal variations of Nutrient Concentration in Hampyeong Bay, West coast of Korea
Kang, Mi-Ran ; Lim, Dhong-Il ; Jang, Pung-Guk ; Kim, Gi-Beum ; Kang, Young-Shil ;
Journal of the Korean Society for Marine Environment & Energy, volume 12, issue 3, 2009, Pages 202~208
In order to understand the circulation of nutrient between muddy tidal flat and the surrounding coastal area, tidal time-scale variations in nutrient concentrations were seasonally investigated at the entrance of Hampyeong Bay. The results show that the temperature was higher in ebb tide and lower in flood tide during the summer, but it was lower in ebb tide and higher in flood tide during the autumn/winter. The salinity was higher in flood tide and lower in ebb tide during the summer/winter because of the inflow of external sea water resulting from the increase in the tide level. By contrast, the salinity was lower in flood tide and higher in ebb tide during the autumn. Salinity difference was lower than 0.3 psu between flood tide and ebb tide during survey period. Meanwhile, all nutrient concentrations observed in Hampyeong Bay was lower in flood tide and higher in ebb tide during the summer, and by contrast, it was higher in flood tide and lower in ebb tide during the winter. Characteristically, no clear variation of concentrations was found depending on the tide level during the autumn. This tidal variations imply that the muddy tidal flat of Hampyeong Bay supplies nutrients to the seawater in summer and removes nutrient from the seawater in winter. During tidal cycle, seasonal variation of nutrient concentration in seawater is considered as the result of complex interactions between the mud flat and external sea water.
Installation and Shipboard Tests of the Ballast Water Treatment System Electro-Cleen
Kim, Eun-Chan ; Cho, Jin-Suk ; Park, Yong-Seok ; Lee, Jong-Wook ;
Journal of the Korean Society for Marine Environment & Energy, volume 12, issue 3, 2009, Pages 209~216
IMO has established International Convention for the Control and Management of Ships' Ballast Water and Sediment 2004 in February 2004 in order to prevent transfer of aquatic organisms through ballast water. According to the Convention, Each countries are preparing ratification and legislation process and encouraging the development of treatment system to satisfy the performance standard in the Convention. This Electro-
treatment system was granted IMO basic approval in March 2006, and final approval in October 2008. The Type Approval Certificate was issued in December 2008 by the Government of Republic of Korea. This paper considers the matter of principle mechanism, overview of the system, installation on shipboard and shipboard test results for the Electro-
. Shipboard tests with the 8300 GT M/V Yokohama and 27,000 DWT M/V Greenwing have already been conducted. These tests confirmed that the Electro-
system satisfies all of the IMO standards and is suitable for installation in new and existing ships.
Effect of Nitrogen Impurity on Process Design of
Marine Geological Storage: Evaluation of Equation of State and Optimization of Binary Parameter
Huh, Cheol ; Kang, Seong-Gil ;
Journal of the Korean Society for Marine Environment & Energy, volume 12, issue 3, 2009, Pages 217~226
Marine geological storage of
is regarded as one of the most promising options to response climate change. Marine geological storage of
is to capture
from major point sources, to transport to the storage sites and to store
into the marine geological structure such as deep sea saline aquifer. Up to now, process design for this
marine geological storage has been carried out mainly on pure
. Unfortunately the captured
mixture contains many impurities such as
. A small amount of impurities can change the thermodynamic properties and then significantly affect the compression, purification and transport processes. In order to design a reliable
marine geological storage system, it is necessary to perform numerical process simulation using thermodynamic equation of state. The purpose of the present paper is to compare and analyse the relevant equations of state including PR, PRBM, RKS and SRK equation of state for
mixture. To evaluate the predictive accuracy of the equation of the state, we compared numerical calculation results with reference experimental data. In addition, optimum binary parameter to consider the interaction of
molecules was suggested based on the mean absolute percent error. In conclusion, we suggest the most reliable equation of state and relevant binary parameter in designing the
mixture marine geological storage process.