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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
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Volume & Issues
Volume 15, Issue 4 - Nov 2012
Volume 15, Issue 3 - Aug 2012
Volume 15, Issue 2 - May 2012
Volume 15, Issue 1 - Feb 2012
Selecting the target year
Feasibility Study on the Two-dimensional Free Surface Simulation Using the Lattice-Boltzmann Method
Jung, Rho-Taek ;
Journal of the Korean Society for Marine Environment & Energy, volume 15, issue 4, 2012, Pages 273~280
DOI : 10.7846/JKOSMEE.2012.15.4.273
The numerical simulation using the Lattice Boltzmann Method in the field of computational fluid dynamics becomes wider in the engineering applications because of its simplicity of update rules compared to the conventional Navier-Stokes solvers. Here, a two-dimensional D2Q9 LB model is numerically tested with a few new computational treatment on the free surface. The single relaxation time is applied under the gravitational field where applied only in the higher density fluid because of its big density difference. At the free surface, the reconstruction techniques in combination with boundary conditions is adopted in order to get some distribution function coming into the fluid site from the air one, and surface tension, early stable test for the gravitional field is considered in it. With the implementation of the gravitational profile, conserving the overall mass and grid dependency are observed during the calculations and freesurface advance track is well captured with an experiment.
The Study on the Marine Eco-toxicity and Environmental Risk of Treated Discharge Water from Ballast Water Management System using Plasma and MPUV
Shon, M.B. ; Son, M.H ; Lee, J. ; Lee, S.U. ; Lee, J.D. ; Moon, C.H. ; Kim, Y.S. ;
Journal of the Korean Society for Marine Environment & Energy, volume 15, issue 4, 2012, Pages 281~291
DOI : 10.7846/JKOSMEE.2012.15.4.281
In this study, WET (whole effluent toxicity) test with Skeletonema costatum, Tigriopus japonicus and Paralichthys olivaceus and ERA (environmental risk assessment) were conducted to assess the unacceptable effect on marine ecosystem by emitting the treated discharge water from `ARA Plasma BWTS` BWMS (ballast water management system) using filtration, Plasma and MPUV module. 34 psu treated discharge water from ARA Plasma BWTS shown slight chronic toxicity effect on the P. olivaceus (
treated discharge water,
treated discharge water). Bromobenzene, chlorobenzene and 4-chlorotoluene in 34 psu treated discharge water from ARA Plasma BWTS were higher than in the background original content of seawater. The PECs (predictive environmental concentrations) of bromobenzene, chlorobenzene and 4-chlorotoluene calculated by MAMPEC (marine antifoulant model to predict environmental concentrations) program (ver. 3.0) were 3.34E-03, 2.10E-03 and 1.73E-03
, respectively and PNECs (predicted no effect concentrations) of them were 1.6, 0.5 and 1.9
. The PEC/PNEC ratio of bromobenzene, chlorobenzene and 4-chlorotoluene did not exceed one and 3 substances did not consider as persistence, bioaccumulative and toxic. Therefore, it was suggested that treated discharge water from ARA Plasma BWTS did not pose unacceptable effect on marine ecosystem.
Estimation of Maximum Typhoon Intensity Considering Climate Change Scenarios and Simulation of Corresponding Storm Surge
Yoon, Jong-Joo ; Jun, Ki-Cheon ; Shim, Jae-Seol ; Park, Kwang-Soon ;
Journal of the Korean Society for Marine Environment & Energy, volume 15, issue 4, 2012, Pages 292~301
DOI : 10.7846/JKOSMEE.2012.15.4.292
The rise in sea surface temperature (SST) as a global warming enhance overall typhoon activity. We assumed that there exist thermodynamic limits to intensity that apply in the absence of significant interaction between storms and their environment. The limit calculations depend on SST and atmospheric profiles of temperature and moisture. This approach do appear to provide resonable upper bounds on the intensities of observed storms and may even be useful for predicting the change in intensity over a long period time. The maximum storm intensities was estimated through the global warming scenarios from IPCC-AR4 report over the North-East Asia. The result shows stronger intensities according to scenarios for increase of carbon dioxide levels. And storm surge simulations was performed with the typhoons which were combined route of the typhoon Maemi (2003) and intensity as climate change scenarios. The maximum increase of storm surge heights was shown about 29~110 cm (36~65%) regionally. Especially at Masan, the result of simulated maximum surge height exceed the 200 years return period surge.
Heavy Metal Contamination in Surface Sediments from Masan and Jinhae Bay, Southeast Coast of Korea
Cho, Yeong-Gil ; Lee, Chang-Bok ;
Journal of the Korean Society for Marine Environment & Energy, volume 15, issue 4, 2012, Pages 302~313
DOI : 10.7846/JKOSMEE.2012.15.4.302
Concentrations of selected heavy metals (Al, Fe, Mn, Cr, Cu, Ni, Zn, Pb, As and Cd) in surface sediments from 96 sites in Masan and Jinhae Bay were studied in order to understand metal contamination. Results show that the surface sediments were mainly enriched by Cu (18-294 ppm), Zn (67-568 ppm), Pb (10-120 ppm) and Cd (0.2-3.5 ppm). The coastal zone of Masan Bay was significantly more contaminated than the non-coastal zone, and spatial distribution pattern suggested additional sources of heavy metal input in the coastal area. The enrichment ratio and geoaccumulation index (
) have been calculated and the relative contamination levels assessed in the study area. The enrichment ratios of Cu, Zn, Pb and Cd in Masan Bay have been observed to be relatively high.
results reveal that the study area is not contaminated with respect to Fe, Mn, Cr and Ni; moderately to strongly contaminated with Cu, Zn and Pb; and strongly to strong contaminated with Cd. The high contents of Cu, Zn, Pb and Cd in the study area result from anthropogenic activities in the catchment area. Based on the eight different sediment quality guideline values from USA (ERL, ERM), Canada (TEL, PEL), Australia/New Zealand (ISQG-high, ISQG-low) and Hong Kong (ISQV-low, ISQV-high), sediment quality of Masan and Jinhae Bay was also assessed and characterized.
Factors Controlling Temporal-Spatial Variations of Marine Environment in the Seomjin River Estuary Through 25-hour Continuous Monitoring
Park, Mi-Ok ; Kim, Seong-Soo ; Kim, Seong-Gil ; Kwon, Jinam ; Lee, Suk-Mo ; Lee, Yong-Woo ;
Journal of the Korean Society for Marine Environment & Energy, volume 15, issue 4, 2012, Pages 314~322
DOI : 10.7846/JKOSMEE.2012.15.4.314
In order to elucidate temporal variations of temperature, salinity, pH, dissolved oxygen (DO), suspended particulate matter (SPM), dissolved inorganic nutrients, and chlorophyll a, we performed 25-hour continuous monitoring in the Seomjin River Estuary in March (dry season) and July (rainy season) 2006. We also investigated spatial variations of marine environmental parameters across a saline gradient. In the Seomjin River Estuary, continuous monitoring results revealed that salinity variations were mainly affected by tidal cycle in the dry season and by river discharge in the rainy season. In the dry season, the spatio-temporal distribution of dissolved inorganic nutrient (nitrate, nitrite, and silicate) concentrations showed a good correlation with tidal cycle. While nutrient concentrations in rainy season showed not much variance in time. There were 6 and 4 times higher dissolved inorganic nitrogen and phosphorus concentrations in the rainy season than those in the dry season, respectively. Silicate concentration was 43 times higher in the rainy season than that in the dry season. Chlorophyll a concentration was higher in the dry season than that in the rainy season showing high nutrient concentrations. The results of this study, spatio-temporal variations of marine environmental factors are determined by both tidal cycle and river discharge. It seems that chlorophyll a concentration is related to the river discharge than dissolved inorganic nutrient distribution.
Oil Spill Detection Mechanism using Single-wavelength LED and CCD
Oh, Sangwoo ; Lee, Moonjin ;
Journal of the Korean Society for Marine Environment & Energy, volume 15, issue 4, 2012, Pages 323~329
DOI : 10.7846/JKOSMEE.2012.15.4.323
In this study, a new optical method for oil detection using an analysis the light-absorption image of separate oil-water mixture with a LED illumination is described. To obtain an information about the presence of oil on water and the thickness of oil, the intensity of light-absorption images acquired through CCD is analyzed. To select the optimal wavelength of the light source, the experiment is conducted using several LEDs having four different wavelength. In the case of using a blue LED having 465 nm wavelength, an intensity decreasing tendency of light-absorption image is obvious and clear. To identify the applicability of sensing system at the real sea condition, experiments are conducted as varying the brightness and water surface angle. Through this research, new optical oil detection methodology is proposed using the absorption difference between water and oil with single-wavelength LED and CCD.
Distribution Characteristics and Cost Estimation of Collection and Treatment of Deposited Marine Debris in Coastal Fisheries around the Southwestern Islands of Korea
Kim, Seondong ; Kang, Wonsoo ;
Journal of the Korean Society for Marine Environment & Energy, volume 15, issue 4, 2012, Pages 330~336
DOI : 10.7846/JKOSMEE.2012.15.4.330
We surveyed and evaluated quantities and distribution characteristics of debris on the sea floor around active fishing grounds around the islands in the southwest coast of Korea in 2007 where the average depth is below 40m. Proper recovery gears mainly to haul the derelict fishing gears are selected considering the sea bed types of the areas. The collected debris amounts were used to estimate the total amount of the surveyed area. The number of hauls per trial times the amount of the debris was extended to whole sampling area and the weighting factor from the opinion was applied to reach the total amount of marine debris on the floor. The amount of the deposited marine debris around Wangdeung-do area is estimated as about 686
, and the cost of the collection and treatment for the deposited marine debris is estimated about 3.9 billion KRW after consideration of the proper size of the working ships, labor, transport and treatment cost.
The Yellow Sea Ecoregion Conservation Project : the Present Situation and its Implications
Kim, Gwang Tae ; Choi, Young Rae ; Jang, Ji Young ; Kim, Woong-Seo ;
Journal of the Korean Society for Marine Environment & Energy, volume 15, issue 4, 2012, Pages 337~348
DOI : 10.7846/JKOSMEE.2012.15.4.337
The Yellow Sea Ecoregion Conservation Project is a joint international project which is carried out under the purposes of conserving the habitats in the Yellow Sea Ecoregion and biodiversity from various threats that damage ecosystems, informing the importance and value of the Yellow Sea Ecoregion, and promoting the understanding and interests of Korea, China and Japan. Subsequent to the Yellow Sea Ecoregion Planning Programme which had been performed during the period from 2002 to 2006, the Yellow Sea Ecoregion Support Project has been performed over 7 years in total from 2007 to 2014. Panasonic is sponsoring the financing of the project, and the organizations in charge of the project by country are Korea Institute of Ocean Science & Technology for Korea and World Wide Fund for Nature branches for China and Japan. While the Yellow Sea Ecoregion Planning Programme was focused on the biological assessment and the selection of potential priority area by scientific review, the Yellow Sea Ecoregion Support Project is oriented toward practical activities targeting more diversified stakeholder. Especially, this project plans to support direct conservation activities in the region and participation and cooperation from local residents. The project plan is comprised of 3 phases. During the first period from 2008 to 2009, small grant projects were operated targeting 16 institutions of Korea and China, and for the second period from 2010 to 2012, one place each was selected as demonstration site for habitat conservation in Korea and China respectively and supported for three years to introduce the conservation method based on international standards such as the management of marine protected areas, ecosystem-based management and community-based management and simultaneously to develop habitat conservation activities suitable for national and regional characteristics. During the period from 2013 to 2014 which is the last phase, the project plans to distribute the performance of small grant projects and demonstration site activities through a series of forums among stakeholder. Through the activities described above, the recognition of general public on the conservation of the Yellow Sea Ecoregion was changed positively, and community-based management began to be reflected in the policies for the marine protected areas of central and local government.
Consideration on the Ballast Water Treatment System Technology and its Development Strategies
Kim, Eun-Chan ;
Journal of the Korean Society for Marine Environment & Energy, volume 15, issue 4, 2012, Pages 349~356
DOI : 10.7846/JKOSMEE.2012.15.4.349
For smooth implementation of the IMO Ballast Water Management Convention that is to come into effect in the near future, IMO and Member States are working on the development of various technologies and establishment of legislative action. Ballast water treatment systems are essential, yet difficult technologies, as they need not only to treat living organisms, but also define whether they are viable or not, count the number of viable organisms, and present quantitative results of the concentration of active substances. Despite the fact that the Convention is looming in the near future, the issues mentioned above obstruct the setup of consensual technologies for performance reliability of the treatment system and analysis method of efficacy test results. This paper considers the unsolved issues of the ballast water treatment technologies, and presents guidelines to solve these issues.
Performance evaluation of Wave observation system using GPS
Huh, Yong ; Hwang, Chang-Su ; Kim, Dae Hyun ; Heo, Sin ; Kim, Joo-Youn ; Lee, Kee-Wook ; Hong, Sung-Doo ;
Journal of the Korean Society for Marine Environment & Energy, volume 15, issue 4, 2012, Pages 357~362
DOI : 10.7846/JKOSMEE.2012.15.4.357
Despite the Wave observations data is very important information to human life at sea, the technology development and research for wave equipments are lacking. In this study, the wave observation system using GPS was evaluated the quality of wave observation data by comparing of long-term observations. The result of the comparison of the acceleration sensor (Hippy-40) and GPS sensor (Mose-1000), the correlation coefficient of the significant wave height and significant wave periods is 0.997 and 0.990 respectively. Also in case of BIAS, the significant wave height is 0.014 m, the significant wave period is -0.212 sec. It makes no significant differences whether the acceleration sensor (Hippy-40) and GPS sensor (Mose-1000). These results of the wave observation data using GPS quality will be evaluated as very good.