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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 12, Issue 4 - Dec 2006
Volume 12, Issue 3 - Sep 2006
Volume 12, Issue 2 - Jun 2006
Volume 12, Issue 1 - Mar 2006
Selecting the target year
Characteristics of Coastal Water Quality after Diatom Blooms Due to Freshwater Inflow
Lee Young-Sik ; Park Young-Tae ; Kim Kui-Young ; Choi Yong-Kyu ; Lee Pil-Yong ;
Journal of the Korean Society of Marine Environment & Safety, volume 12, issue 2, 2006, Pages 75~79
In order to study the characteristics of water quality in coastal water and mechanism of phytoplankton blooms, factors of water quality were investigated in diatom bloom area due to rainfall event and no diatom bloom area Diatom blooms occurred after heavy rain and the dominant species were Skeletonema costatum(
) and Thalassiosira spp.(
). In diatom bloom area, water temperature, pH, and dissolved oxygen were observed at higher level than in no diatom bloom area Although these two areas were only 20 meters apart from each other, sharp difference in coastal water quality between two areas was observed. In diatom bloom area, concentrations of nitrogen, phosphorus, and silicate were observed at lower level than in no diatom blooms area. This seems to be due to inflow of much trace metal such as Fe, Mo, Se and so on than nitrogen, phosphorus, and silicate by rainfall events. However, distinct differences in DIN/DIP and
between these two areas were not observed.
Algal Growth Potential (AGP) Assay Using Heterosigma akashiwo(Raphidophyceae) in Pukman Bay, Korea
Kim Mu-Chan ;
Journal of the Korean Society of Marine Environment & Safety, volume 12, issue 2, 2006, Pages 81~87
Algal growth potential(AGP) assay using Heterosigma akashiwo was conducted in Pukman Bay. The effects of nutrients and microorganisms on the growth of H. akashiwo were specifically evaluated by the algal bioassay method. The different types of growth response of H. akashiwo to the addition of nutrients, and the co-incubation with microorganisms were clearly observed. Before H. akashiwo red tide occurrence, the growth of H. akashiwo was significantly stimulated by addition of nitrate of
with phosphate of
. The addition of single phosphate had no clear effect on the growth of H. akashiwo. And the co-incubation with microorganisms had no clear effect on the growth of H. akashiwo. This result indicates that nitrate potentially limited the growth of H. akashiwo before red tide occurrence. However, during a bloom of H. akashiwo, the growth was significantly stimulated by addition of either nitrate of
or phosphate of
. The addition of trace metals and vitamin
had no clear effect on the growth of H. akashiwo in the period. This result indicates that both nitrate and phosphate potentially limited the growth of H. akashiwo during the bloom. On the other hand, during the termination period of H. akashiwo bloom, the growth of H. akashiwo was slightly stimulated by addition of phosphate and nitrate. But the growth of H. akashiwo was significantly enervated by the co-incubation with microorganisms. This result indicates that microorganisms potentially limited the growth of H. akashiwo in the period of bloom termination.
Effects of Oxolinic Acid on Microbial Community under Simulated Marine Fish Farm Environment
Yoon Duk-Hyun ; Kim Mu-Chan ;
Journal of the Korean Society of Marine Environment & Safety, volume 12, issue 2, 2006, Pages 89~98
The microbial response after treatment of antibiotics was studied for investigating the resistance pattern under simulated aquaculture environment. A marine microcosm was developed for marine fish farm environment using artificial seawater and sediment. Oxolinic acid, which has been commonly used in aquaculture, was employed for the experiment. Resistance patterns and the changes of microbial community were monitored before. during and after use of oxolinic acid. Vibrionaceae was the dominant bacterial species throughout the experiment, consisting 65-75% of total bacterial number in fish farm environment. However, some gram-positive bacteria, Micrococcos sp. and Bacillus sp. strains in marine farm environment were increased in proportion to their number during the treatment. ETS activity of the bacterial communities in aquaculture environment was reduced to 42-67% during the treatment of oxolinic acid. But recovering trends of bacterial number were also detected immediately after cease of oxolinic acid treatment. Frequent treatment of oxolinic acid under the simulated fish farm environment showed bacterial resistance to increase sharply.
Effects of Suspended Solids, pH and Salinity on the Chemical Fate of Oxolinic Acid in the Aquatic Environment
Yoon Duk-Hyun ; Kim Mu-Chan ;
Journal of the Korean Society of Marine Environment & Safety, volume 12, issue 2, 2006, Pages 99~106
The fate of chemical pollutants in the aquatic environment is generally considered to be strongly influenced by environmental factors such as pH, salinity and electrostatic charges on the surface of particles ai well as by the characteristic of chemicals. Oxolinic acid was measured by chemical analysis using HPLC to determine the effect of salinity, pH and suspended solids on chemical binding and by bioassay for measuring bioactivity. The higher contentration of suspended solids in the medium, the lower concentration of oxolinic and was detected in measurements from by both HPLC and biosssay analysis. This indicates particle may have a stronger binding or absorption effect on oxolinic acid. Bioassay analysis showed weaker bioacivity at higher salinity and pH 7.0, but this result of bioassay analysis was different from the result of HPLC.
A Study on Recycling Plan for the Dehydrated Sludge of Water Treatment Plant
Chung Youn-In ; Chang Yong-Chai ; Choi Byoung-Il ;
Journal of the Korean Society of Marine Environment & Safety, volume 12, issue 2, 2006, Pages 107~113
Water treatment plant sludge occurred in sedimentation and inverse wash process is generally disposed by ocean dumping or reclamation after dehydration processing using mechanical or natural dry method. Recently, ocean dumping of sludge is limited actually by London Convention. Physical, chemical, and geotechnical characteristics of water treatment plant sludge were analyzed by experiments. The possibilities for recycling of the dehydration sludges as materials for covering sanitary landfill were examined. Experiments performed with sludges mixed with general soil to improved the sludge properties are the hydrometer analysis, the liquid and plastic limit test, the specific gravity test, the compaction test, and the unconfined compression test. The value of
is increased and OMC(Optimum Moisture Content) is lessened with mixed sludge. The value of maximum compressive strength and friction angle are increased and the cohesion is decreased with mixed sludge. The ratio between sludge and soil in mixed sludge was 3:7 and the strength of mixed sludge showed
. These results satisfy the regulation of U.S. E.P.A regarding materials for covering sanitary landfill.
International Ocean Issues and Policy Regime
Choi Sung-Doo ;
Journal of the Korean Society of Marine Environment & Safety, volume 12, issue 2, 2006, Pages 115~123
The policy regime of ocean is changed from ocean liberty paradigm to ocean management paradigm. Ocean resources have the characteristics of weak excludability and strong rivalry. Therefore, they need rational ocean management so as to curb the tragedy of commons. The important ocean issues and policy regimes today is ocean pollution, coastal management, sea-level rise, fishery, whaling, ocean jurisdictions, deep seabed resources, military security, piracy, ecological environmental security and so on. This paper aims at reviewing these major international ocean issues, the policy regimes for them, and the desirable tasks of ocean policy regimes in the future from the macro perspective of international ocean politics or policy-making.
A Comparative Study on the Marine Law Enforcement System of Korea, China and Japan - With emphasis on the amendment of Chinese Marine Law Enforcement System -
Park Moon-Jin ; Park Yong-Nan ; Jin Chu ;
Journal of the Korean Society of Marine Environment & Safety, volume 12, issue 2, 2006, Pages 125~132
A Study on Establishment of Traffic Separation Scheme for Adjacent Sea Areas on Yosu Port
Park Seong-Hyun ; Jeong Jung-Sik ; Park Young-Soo ;
Journal of the Korean Society of Marine Environment & Safety, volume 12, issue 2, 2006, Pages 133~137
In adjacent sea areas of Yeosu, there are many crossing traffics between eastbound and westbound vessels. Traffic congestion is increasing in sea area of east Sori island and near Yokji Island. In this research, we established TSS near Yeokmando Areas and new recommended route which connected to Seopdo west recommended route to reduce meeting traffic between eastbound vessels and westbound vessels.
A Study on the Validity of Proper Maximum Navigation Speed in a Straight Waterway
Park Young-Soo ; Jong Jae-Yong ; Park Jin-Soo ;
Journal of the Korean Society of Marine Environment & Safety, volume 12, issue 2, 2006, Pages 139~144
Recently, ships' average navigation speed become faster than before because of the increasing of high-speeds vessel including container ships and passenger-ferries. So, it is considered that the speed limit in the navigation channel in Korea isn't proper for vessel management in these days. Also, there is rare paper studies about the speed limit quantitatively and numerically, especially the speed limit is discussing continuously, as abrogation of Incheon Port's speed limit and alleviation of Gwang-yang Port's speed limit according to the requests by the navigating mariners. Consequently this paper deals with the effectiveness of speed limits using the Environmental Stress Model, after replay of the navigation traffic flow in the straight waterway using marine traffic flow simulation technique.
Analysis on Port Image for Development of Port-City Considered Environment Using Fuzzy Theory
Jang Woon-Jae ; Keum Jong-Soo ;
Journal of the Korean Society of Marine Environment & Safety, volume 12, issue 2, 2006, Pages 145~150
This paper proposes an analysis to image of Inchon port using fuzzy theory. After analysis, positive opinion is mean membership function 0.73 and positive membership function 0.27, negative opinion is mean membership function 0.69, negative membership function 0.31 about Inchon port development. therefore, for port development need to accomodation of each opinion positive opinion is maximum decrease from 20 age to 30 age. and negative opinion is maximum increase from 10 age to 20 age. According to the results, port development need to high positive image as leisure and development of waterfront and low negative image as integrated port management and strategy of considered environment port.
A Study on the Automatic Seam Tracking of Triangular Wave Form
Bae Cherl-O ; Kim Hyun-Su ; Ahn Byong-Won ;
Journal of the Korean Society of Marine Environment & Safety, volume 12, issue 2, 2006, Pages 151~155
In these days, welding is the most commonly used metallic connection technology and also is the fundamental production technology of the modem industrial, which is used in various areas of the industrial fields, such as shipbuilding, automobiles, airplanes and plant facilities. However welding process produces strong light, electric currents, and fume gases etc., and the welding automation is not so easy compared to the other works of manufacturing industries which produce the standardized products in large quantities. So it is difficult to weld and detect the all kinds of seams automatically by a specific sensor. In this paper the sensor applying strain gauges is used to detect the seams of triangular wave form. With the auto carriage having the sensor we proposed the experiment to weld and track the seam automatically.
Effects of Elevated
Concentrations on Marine Lives in Seawater
Lee Kyoung-Seon ;
Journal of the Korean Society of Marine Environment & Safety, volume 12, issue 2, 2006, Pages 157~163
The scenario of
disposal in the deep-sea are thought to be possible method to reduce atmospheric
concentrations. However, it is necessary to clarify the effects of elevated
concentrations on both marine organisms and marine ecosystems. In this paper the literatures on the biological impact of elevated
concentrations in seawater and recent studies on the effects of elevated
concentrations on marine animals are reviewed. Elevated
concentrations may affect the physiological functions of marine animals such as acid-base regulation, blood oxygen transport and respiratory system, and ultimately lead to the death of marine animals. Although the fish used in the early studies on
effects are temperate, shallow-water species, deep-sea species should be experimented for the future study on
sequestration in the deep ocean.