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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 14, Issue 4 - Dec 2008
Volume 14, Issue 3 - Sep 2008
Volume 14, Issue 2 - Jun 2008
Volume 14, Issue 1 - Mar 2008
Selecting the target year
Evaluation of Characteristics of Particle Composition and Pollution of Heavy Metals for Tidal Flat Sediments in Julpo Bay, Korea
Kim, Jong-Gu ; You, Sun-Jae ; Ahn, Wook-Sung ;
Journal of the Korean Society of Marine Environment & Safety, volume 14, issue 4, 2008, Pages 247~256
For the systematic scientific management of tidal flat sediment in Julpo bay of Korea, this study conducted a survey of particle composition, organic matter(l.L) and heavy metals for three lines ; including F, R and L lines in tidal flat sediment. Particle composition of tidal flat sediments consisted predominantly of clay at F line which was in right angle direction to the coast, whereas R and L lines were located horizontally along the coast and consisted predominantly of silt. Mean grain size values of tidal flat sediments were in the range of 3.7
). The contents of heavy metals observed at R and L lines were lower than those at F line. The correlation analysis among heavy metals, organic matter and particle size was found to have a good interrelationship. For the evaluation of heavy metals pollution, two criteria of US NOAA and KEI(in Korea) were applied Heavy metals pollution level of tidal flat sediments belonged in Non polluted and Moderately polluted groups in US EPA criteria, and its pollution levels sat below ERL in NOAA criteria. The results of heavy metals pollution level obtained by KEI criteria were found to be less than the goal level.
A Study on the Pollution of Polycyclic Aromatic Hydrocarbons (PAHs) In the Column Sediments around Gwangyang Bay
You, Young-Seck ; Cho, Chon-Rae ; Cho, Hyeon-Seo ;
Journal of the Korean Society of Marine Environment & Safety, volume 14, issue 4, 2008, Pages 257~266
PAHs are of mainly anthropogenic origin from urban runoff, oil spill and combustion of fossil fuels. Some PAHs are potentially carcinogenic and mutagenic to aquatic organisms. This study was carried out to survey the contamination of PAHs in the column sediments around Gwangyang bay. Yeosu petrochemical industrial complex, POSCO(Pohang steel compony) and Gwangyang container harbor are located near the bay. The column sediments were collected at 4 stations(A, B, C and D) and fractionated at intervals of two-centimeter depth on July 29, 1999. PAHs in colmn sediment samples were extracted in soxhlet extractor and were identified and quantified by GC-MS. PAHs compounds were analyzed and found to be 13 species. Total PAHs concentrations in the column sediments ranged from 275.04 to 2,838.64
dry wt. Naphthalene had the highest concentration in the range of 40.60 to 2,294.06
dry wt. and Anthracene had the lowest concentration in the range of 2.63 to 11.30
dry wt. The correlation coefficients between individual PAHs and total PAHs in the column sediments were relatively higher in the low molecular compounds such as Naphthalene, Acenaphthylene and Phenanthrene. The relationship between the P/A(Phenanthrene/Anthracene)ratio and F/P(Fluoranthene/Pyrene)ratio showed that P/A ratio was generally above 10 and F/P ratio was above 1 in all sediment samples. These data indicate that PAHs in the column sediments around Gwangyang bay seem to be of both pyrolytic and petrogenic origin The values of PAHs in the column sediments were lower than the biological effect guidelines.
Toxic Assessment on Effluents of Argo/Industrial Wastewater Treatment Plants in Jeonnam using Chemical and Biological Method
Lee, Moon-Hee ; Choi, Ik-Chang ; Han, Sang-Kuk ;
Journal of the Korean Society of Marine Environment & Safety, volume 14, issue 4, 2008, Pages 267~273
The purpose of this study is to investigate the distributive property of organic pollutants in effluents of argo/industrial wastewater treatment plants in Jeonnam using simultaneous analysis method of 310 chemicals. The numerous organic pollutants were detected in four sampling sites and the major chemicals were pesticides, CH type chemicals such as polycyclic compounds, CHO type chemicals such as phthalates, and CHO(N) type chemical such as aromatic amines. Moreover, 17 kinds of endocrine disrupters which include diethylptbalate were detected in each sampling sites. TU (Toxic unit) indicated cytotoxicity of samples using XTT assay, it appeared highly at A point(27.2) and D point(24.4). Also, the results from the correlation between total concentration of pollutants and TU did not correspond to the results of chemical and biological analysis.
Assessment of Noise Externalities by Using Hedonic Price Model
Kwon, Suk-jae ; Grigalunas, Thomas A. ; Lee, Moon-Suk ; Kang, Gil-Mo ;
Journal of the Korean Society of Marine Environment & Safety, volume 14, issue 4, 2008, Pages 275~287
Noise externalities are a ubiquitous problem in modern societies. Research to estimate damages and potential efficient solutions therefore is important for addressing such problems. The results of a hedonic property model show that noise has a statistically significant and quantitatively important negative effect on property values. The key results for the best model show that damages (in year 2000 dollars) are - $5000
(ln dB), where dB is noise measured in decibels, allowing for the influence of other factors. Because ln(dB) is a strictly concave funaion, the "noise damage function"exhibits diminishing marginal effects with noise.
Analysis on the Harmful Effect of Recycled Powder and Properties of Concrete Admixture by Recycled Powder
Lee, Seung-Hwan ; Choi, Ik-Chang ; Han, Sang-Kuk ;
Journal of the Korean Society of Marine Environment & Safety, volume 14, issue 4, 2008, Pages 289~295
The disposal of constructive waste is emerging as a national and social issue and the recycled powder generated by the production of reproductive aggregate is all being abolished or buried Analysis on the harmful effect of recycled powder indicated that because it contained massive cytotoxicity, it could derive secondary pollution to soil and subterranean water. This study set on an idea that one way to recycle recycled powder was to use it as a compound of concrete. In order to study that prospect, recycled powder, instead of cement, was mixed and a comparative analysis was conducted on the mechanical properties and workability. From experimental results, it was judged that application of recycled powder of cement replacement ratio below 20% was available with chemical admixtures. Also application of recycled powder was available to high strength concrete.
A Study on the Measurement of Ship Wave
Jung, Dae-Deug ;
Journal of the Korean Society of Marine Environment & Safety, volume 14, issue 4, 2008, Pages 297~301
On-site measurement of ship wave has been carried out in the vicinity of Mokpo inner harbour. The wave data were collected and logged 5Hz by the ultrasonic instrument for 12hour on May 17, 2006. The number of data was 216,000 and the maximum wave height was 81.41cm in normal weather condition. It was found that the wave conditions in this water area are predominantly affected by the ship-generated waved under normal condition. By comparing with the wind-generated waves in the open region which were irregular but with dominant directional characteristics, the existing harbor wave field was much more complex.
A Study on the Safety-Towing System for Barge Using Portable GPS
Lee, Sang-Min ; Ahn, Byung-Kil ;
Journal of the Korean Society of Marine Environment & Safety, volume 14, issue 4, 2008, Pages 303~307
The tug boat is restricted in her maneuvering ability due to the towed barge, and tug-barge has been strongly affected by the external forces, i.e. the wind, wave, currents, and so on. Therefore, it is difficult to get the safety of tug-barge operation. It is necessary for the captain of tug boat, VTS and operation department to develope the system which can keep observing the course, speed and position of the towed barge in actual sea and prevent the marine accidents in advance. In this study, we proposed the basic method to develope the safety towing system for barge using portable GPS which was easily movable and relatively inexpensive. Then we conducted the test on the real barge. As a result, we could obtain diverse navigation data to make a safety towing work. It was noted that these data could be used for carious purposes.
A Study on the Legal Character and Admissible Scope of Inspection and Police Questioning of a Vessel
Kim, Jong-Goo ;
Journal of the Korean Society of Marine Environment & Safety, volume 14, issue 4, 2008, Pages 309~316
This article discusses the legal character and admissible scope of inspection and police questioning of a vessel with force in comparison with the systems of the US and Japan. The author focuses on the factual differences between vessels and cars which justifies the varying standard. A ship at sea may easily slip away and destroy evidence while authorities attempt to get a warrant. Thus, a warrantless boarding and safety inspection could be validated because of the exigent circumstances of the sea.
A Study on the Comparisons of the Environmental Factors of Each Nation in the Field of Marine Leisure Sport Industry - Focusing on the Correlations between the Environmental Factors and the Promotion Index -
Lee, Jin-Mo ; Kang, Jeong-Gu ; Park, Young-Soo ; Park, Jin-Soo ;
Journal of the Korean Society of Marine Environment & Safety, volume 14, issue 4, 2008, Pages 317~323
The interest in the marine leisure sports is rapidly growing, due to the increases of the leisure time in the five working day per week and the increases of GNP. The regional governments are trying to attract massive investments into the marine leisure industry through international exhibitions and yacht rallies: However, the domestic demand patterns don't increase in contrast to those advanced countries. Up to now, few studies have been made on the industrial factors for the promotions of the marine leisure sports. In this study, variables affecting the marine leisure sports were analyzed into economical, social factors and so on. The correlations between the environmental variables and the number of the leisure boats per 1,000 persons were analyzed. Lastly, prospective suggestions were made for the developments of the marine leisure sport industries through comparisons of the domestic environmental factors with those of the advanced countries.
Design and Structural Analysis of Dry Dock Gate
Park, Joo-Shin ; Ahn, Hwan-Jin ; Jung, Gil-Yong ;
Journal of the Korean Society of Marine Environment & Safety, volume 14, issue 4, 2008, Pages 325~331
Recently, new shipbuilding yards with medium capacity are established due to influence of prosperous condition no shipbuilding industry in Korea. These shipbuilding yards have characteristics such as high capacity facilities and followed system of dock launching just like major shipbuilding yards. The present paper explains the dry dock design and structural strength analysis by using FEM. The design stage used TRIBON M3 system while the estimation of structural strength used ANSYS Multiphysics module. The dry dock gate did not frequently open and close, it had to sustain against external wave load during building a ship. Moreover, documents related to design of dry dock gate have no guidelines about design criterion and process of structural strength calculation. It is necessary to make the guidelines about design of dry dock gate. It is expected that this paper will be a good reference to the design of dry dock gate.
The Effect of Bottom Gap Size of Submerged Obstacle on Downstream Flow Field
Cho, Dae-Hwan ;
Journal of the Korean Society of Marine Environment & Safety, volume 14, issue 4, 2008, Pages 333~338
The coastal zone is a delicate and dynamic area in which the majority of a water kinetic energy is dissipated. These processes are subsequent to the transport of the beach materials. In comparison to emerged breakwaters, submerged structures permit the passage of some wave energy and in turn allow for circulation along the shoreline zone. This research aims to examine the beach erosion prevention capability of submerged structure by laboratory model. The flow characteristics behind a submerged obstacle with bottom gap were experimentally investigated at Re =
using the two-frame PIV(CACTUS 2000) system. Streamline curvature field behind the obstacle has been obtained by using the data of time-averaged mean velocity information. And the large eddy structure in the separated shear layer seems to have signification influence on the development of the separated shear layer. As bottom gap size increases, the recirculation occurring behind the obstacle moves toward downstream and its strength is weakened.
The Prediction of Stratified Flow Pattern in a Variable Tube Inclinations and Gravity Conditions
Choi, Bu-Hong ;
Journal of the Korean Society of Marine Environment & Safety, volume 14, issue 4, 2008, Pages 339~345
The stratified flow can be seen in the oil and gas pipelines as well as pipelines related to ship's fluid machineries. Numerous theories and correlations have also been proposed in the past for the prediction of stratified flow in horizontal or slightly inclined pipe. The previous researches are mostly about the effects of physical properties, viscosity, phases densities and pipe geometries on the stratified flow. Very few study outcomes exist on the effect of gravity magnitude and large slop angle of pipe inclinations on the occurring condition of stratified flow. In this study, therefore, analytical procedures were conducted about the effect of both the change in the gravity magnitude and pipe inclinations on the stratified flow occurring conditions. From the analytical results, it was found that stratified flow occurred at the vertical upward inclination and at very low liquid phase flowrates in 0.17g and 0.33g conditions.
Designs on CPW-FED Aperture Antenna for UWB Applications for Wireless System in a Ship
Kim, Kab-Ki ;
Journal of the Korean Society of Marine Environment & Safety, volume 14, issue 4, 2008, Pages 347~351
In this paper, a new co-planar waveguide ultra-wideband aperture is designed as wireless application in ships. The designed antenna consists of a rectangular aperture on a determined ground plane and a mushroom shaped stub. The mushroom-shaped stub, which is simple, convenient to analyze and optimise, has less parameters. This antenna has compact aperture size
, designed on FR-4 substrate with dielectric constant of 4.3, thickness of 1.5mm. CPW fed planar antenna has the advantages of wide-bandwidth, low-cost and easy interaction with the radio frequency front end circuitry.