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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Korean Society of Marine Environment & Safety
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Journal DOI :
The Korean Society of Marine Environment and safety
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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
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Scenario Analysis of Dioxins Behaviors In Ulsan Bay of Korea using EMT-3D Model
Kim, Dong-Myung ;
Journal of the Korean Society of Marine Environment & Safety, volume 17, issue 2, 2011, Pages 89~96
DOI : 10.7837/kosomes.2011.17.2.089
A three dimensional ecological model(EMT-3D) was applied to Ulsan Bay for the simulation of Dioxins. The simulated results of dissolved Dioxins were in agreement with the observed values, with a correlation coefficient(R) of 0.7951 and a coefficient of determination(
) of 0.6265. The results of sensitivity analysis showed that partition rate, adsorption rate and bioconcentration factor were important factors. Therefore, the parameters must be carefully considered in the modeling. In the case of 50% and 80% total loads reduction, concentration of dissolved Dioxins was shown to be lower than 0.150 and 0.250 pg WHD-TEQ/L, respectively.
A study for Variation of Consolidation Behavior by Analysis Method
Chung, Youn-In ; Kim, Min-Jung ;
Journal of the Korean Society of Marine Environment & Safety, volume 17, issue 2, 2011, Pages 97~103
DOI : 10.7837/kosomes.2011.17.2.097
In this study, finite element analysis is performed for consolidation behavior prediction of drainage-installed soft deposits. Finite element analysis is performed under the two strain conditions as small strain with limited application and large strain for relatively thick layers, large deformation and non-linear material properties. The analysis conditions such as layer depth, loading conditions, smear effects are also changed and variation of consolidation behavior for each condition is estimated from ABAQUS program.
Characteristics of Water Quality In the Shihwa Lake and Outer Sea
Jang, Jeong-Ik ; Han, Ihn-Sub ; Kim, Kyung-Tae ; Ra, Kong-Tae ;
Journal of the Korean Society of Marine Environment & Safety, volume 17, issue 2, 2011, Pages 105~121
DOI : 10.7837/kosomes.2011.17.2.105
The operation of tidal power facility may induce severe changes of water quality in Shihwa Lake. Current water quality data are quite important to water quality management policy of Shihwa Lake. Thus, the water quality data of Shihwa Lake and its adjacent sea in 2010 were presented to characterize the temporal and spatial changes of water parameters such as pH, SS, DO, COD, dissolved nutrients, chlorophyll-a, TN and TP. Highest levels of water quality parameters were observed near the Shihwa and Banweol industrial complexes and the levels of water quality parameters were on a decreasing trend to those near the water gate. It suggests that the horizontal distributions of water quality levels are mainly controlled by the supply of fresh water from streams and the inflow of outer seawater by operation of water gate. Although the higher concentrations of TN and TP were observed in the location being affected by Sorae port, the levels of water quality parameters in outer sea of Shihwa Lake were lower than those in Lake. In summer season, hypoxic condition was well developed in bottom water by strong stratification and active decomposition of organic matter. Thus, the vertical distributions of dissolved nutrient, TN and TP concentrations showed the concentrations to be higher in bottom seawater than those in surface seawater whereas the vertical distributions of chlorophyll-a, COD and POC concentrations showed the concentrations to be higher in surface seawater than those in bottom water. Results of Pearson`s correlation matrix for surface seawater demonstrated that salinity showed negatively good correlation with not only dissolved nutrients except for ammonium but chlorophyll-a, COD and POC This result indicates that the supply of dissolved nutrients through several streams might significantly affect phytoplankton bloom and increase of COD concentration in surface seawater.
A Study on the Characteristics of Marine Debris in Coastline : Daekwang Beach In Imja Island, Jeollanam-Do, Korea
Jang, Seong-Woong ; Oh, Seung-Yeol ; Kim, Dae-Hyun ; Yoon, Hong-Joo ;
Journal of the Korean Society of Marine Environment & Safety, volume 17, issue 2, 2011, Pages 123~129
DOI : 10.7837/kosomes.2011.17.2.123
A study on the occurrence and movement of marine debris is required for protecting the marine environment and ecosystem from marine pollution. The aim of this study is to show annual production and movement characteristics through analysis for the flow path, composition and the sources of marine debris. This study analyzed the distribution and characteristics of marine debris collected in the region of
The Vessels Traffic Measurement and Real-time Track Assessment using Computer Vision
Joo, Ki-Se ; Jeong, Jung-Sik ; Kim, Chol-Seong ; Jeong, Jae-Yong ;
Journal of the Korean Society of Marine Environment & Safety, volume 17, issue 2, 2011, Pages 131~136
DOI : 10.7837/kosomes.2011.17.2.131
The furrow calculation and traffic measurement of sailing ship using computer vision are useful methods to prevent maritime accident by predicting the possibility of an accident occurrence in advance. In this paper, sailing ships are recognized using image erosion, differential operator and minimax value, which can be verified directly because the calculated coordinates are displayed on electronic navigation chart. The developed algorithm based on area information of this paper has the advantage which is compared to the conventional radar system focused on point information.
A Study on Scale and Coverage of Nautical Chart of Korea
Lee, Hyong-Ki ; Kim, Jong-Seng ; Park, Young-Su ; Gang, Jeong-Gu ; Park, Jin-Su ;
Journal of the Korean Society of Marine Environment & Safety, volume 17, issue 2, 2011, Pages 137~142
DOI : 10.7837/kosomes.2011.17.2.137
Navigational charts in Korea have been increasingly published in line with the development of harbour for 60 years without a detailed planning. Recently, charts cause inconvenience to use and make navigator confused because they have not been adjoined to adjacent chart effectively and have been to overlap with other charts of the same scale. In this paper, we propose new chart system through adjusting area of the chart and rearranging its scale. This newly proposed scheme was first designed by researchers who have on-board career, then has been verified and revised by questionnaire and pilots` opinion. As a result, total number of Korean chart could be changed from 309 to 334.
A Study on the Improvement of the "DAESAN" Harbor Fairway
Kim, Chol-Seong ; Rim, Gung-Su ; Kim, Sung-Cheol ;
Journal of the Korean Society of Marine Environment & Safety, volume 17, issue 2, 2011, Pages 143~148
DOI : 10.7837/kosomes.2011.17.2.143
Daesan Harbor is developing under the Industrial Complex or Petrochemistry Development Plan making the port the main hub-port in the West coast. Because of this development. the traffic volume is expected to increase to 9,1.95 incoming vessels by 2020, an increase of 167% compared to 2008 figure. This study thoroughly analyzes and evaluates a systematic and comprehensive use of the fairway in the Daesan Harbor. It establishes a future oriented and safe marine transportation environment upon appropriate examination of the total fairways and sailing assistance facilities.
A Study on the Captain`s Leadership and Decision Making
Sin, Ho-Sig ; Youn, Dae-Gwun ;
Journal of the Korean Society of Marine Environment & Safety, volume 17, issue 2, 2011, Pages 149~154
DOI : 10.7837/kosomes.2011.17.2.149
It is very important for ability to be treated to protect and secure the loss of life and property in emergency situation at sea. 80% of maritime casualty are incurred by human factors rather than a mechanical reason, which means that most maritime incident does not come from only one factor by mistake, but multiple potential factors causing a fault and error. Therefore, after research of the leadership effect to the ship, decision making process and behavior characteristics occurred in emergency situation, this paper presents settlement scheme and strategy in order to reduce human error in the ship.
A Study on the Enhancement of Corrosion Resistance of Magnesium Alloy by Dry Plasma Process
Yun, Yang-Sup ;
Journal of the Korean Society of Marine Environment & Safety, volume 17, issue 2, 2011, Pages 155~160
DOI : 10.7837/kosomes.2011.17.2.155
In these days, there are increasing demands for weight reduction in many industrial fields including marine industries. Therefore, magnesium thin films for lightweight materials were prepared on magnesium alloy substrate. The influence of gas pressure and substrate bias voltages on the crystal orientation and morphology of the films was determined by using X-ray diffraction and FE-SEM, respectively. And the effect of crystal orientation and morphology of the magnesium thin films on corrosion behavior was estimated by measuring electro-chemical anodic polarization curves in deaerated 3% NaCl solution. From the results, corrosion resistance of Mg thin films was improved by controlling the crystal orientation and morphology of the films with effective use of plasma ion plating technique.
Study on Catamaran Type Solar Boat Using the Pod Propulsion System
Kim, Myoung-Jun ; Chea, Gyu-Hoon ;
Journal of the Korean Society of Marine Environment & Safety, volume 17, issue 2, 2011, Pages 161~166
DOI : 10.7837/kosomes.2011.17.2.161
In this study, design of hull and test of model boat were carried out with electric propulsion small boat driven by photo-voltaic energy. The shape of boat was made with catamaran type by considering the ship`s stability, the light-receiving area from solar. According to calculation, when speed of model boat is 5 knots, it was estimated the available power for propulsion with 1.1[hp]. However, the natural energy such as solar energy is strictly dependent upon the climate conditions so the real boat speed is slightly lower than the estimated value.
Analysis of Turbulent Velocity Fluctuations of Rectangular Shape of the Surface Roughness Change
Oh, Dae-Kyun ; Oh, Woo-Jun ; Kim, Do-Jung ; Lee, Gyoung-Woo ;
Journal of the Korean Society of Marine Environment & Safety, volume 17, issue 2, 2011, Pages 167~172
DOI : 10.7837/kosomes.2011.17.2.167
In physical engineering, the turbulent flow on the surface roughness is very important. With the welding, design and paint, the hull surface roughness at each stage in the various aspects are important factors to be considered. In this study, the hull surface roughness geometry that was generalized to the PIV was applied to the tank test. The roughness of the surface changed the distance of the interval. Experimental velocity is Re
The Elasto-Plastic Stress Analysis of Tube Expansion for Marine TEMA(Tubular Exchanger Manufactures Associations) Heat Exchangers
Kim, Ok-Sam ; Park, Jong-Dai ;
Journal of the Korean Society of Marine Environment & Safety, volume 17, issue 2, 2011, Pages 173~178
DOI : 10.7837/kosomes.2011.17.2.173
Marine TEMA heat exchanger is the equipment to transfer the heat energy through both fluids that are enclosed separately by applying conduction and convection phenomena for a large vessels, Especially for heat exchanger working under the high temperature and high pressure, the expansion ratio should be taken into account other than under the low temperature and low pressure. This study was tried to find out the ideal expansion ratio through analyzing the elasto-plastic stress behavior of deformation while tubes are expanded with the finite element methods.
A Study on the Towing Force of Heavy Loaded Barge against Strong Current
Kim, Chol-Seong ; Rim, Geug-Soo ;
Journal of the Korean Society of Marine Environment & Safety, volume 17, issue 2, 2011, Pages 179~185
DOI : 10.7837/kosomes.2011.17.2.179
A marine collision accident occurred at the Jin-do water way. A barge loaded with heavy equipment of Power Generation Plant was being towed at its side by two tugs "A" and "B" from Byeg-pa harbour to the designated position to be used for power generation plant near Jin-do bridge. The Power Generation Plant was 40-meters high loaded atop the barge. When the "tugs and tow" were approaching the Jin-do the bridge, the two towing tugs lost maneuvering control of the barge and it went off-course, hit first the waterway embankment and finally struck the lower part of bridge`s span and post musing the barge to capsize and sunk its cargo into the sea. The bridge also suffered damages where the top of the Plant struck At the time of the accident, there was a strong tidal current at the waterway. This paper calculates the safe towing force of barges with heavy loads when traversing in a strong tidal current situation in narrow waterway.