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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
Journal Basic Information
Journal DOI :
The Korean Society of Marine Environment and safety
Editor in Chief :
Volume & Issues
Volume 20, Issue 6 - Dec 2014
Volume 20, Issue 5 - Oct 2014
Volume 20, Issue 4 - Aug 2014
Volume 20, Issue 3 - Jun 2014
Volume 20, Issue 2 - Apr 2014
Volume 20, Issue 1 - Feb 2014
Selecting the target year
Marine Algal Flora and Community Structure of Igidea Area in Busan, Korea
Shin, Bong-Kyun ; Kwon, Chun-Jung ; Lee, Suk-Mo ; Choi, Chang-Geun ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 2, 2014, Pages 121~129
DOI : 10.7837/kosomes.2014.20.2.121
Marine algal flora and community structure were seasonally investigated at four sites in the vicinity of the Igidae on the southern east coast of Korea from May 2010 to February 2011. A total of 66 species including 9 of Chlorophyta, 14 of Phaeophyta, 43 of Rhodophyta were found during the survey period. Among these species, 16 species were found throughout the year. Seasonal mean biomass in wet weight was 123.6 (spring), 2,061.6 (summer), 412.0 (autumn), 678.9 (winter)
. Maximum biomass was recorded in summer(
), and minimum was recorded in spring(
). Spatial maximum and minimum species number were recorded at station 3 and 4(50 species) and at station 1(47 species). At station 1, 2 directly exposure on Yongho and Daeyeon cheon (stream) run off, and discharge from Nambu sewage treatment plants near coastal area, species diversity was relatively low and dominant species were similar throughout four seasons. The R/P, C/P and (R+C)/P value reflecting flora characteristics were 3.07, 0.64 and 3.71, respectively. The flora investigated could be classified into six functional groups such as coarsely branch form 39.39 %, sheet form 30.30 %, thick leather form 13.64 %, filamentous form 12.12 %, crustose form 3.03% and jointed calcareous form 1.52 % during survey period. The number of marine algae species in Igidea were 96 species at 1996 to 1997 and 66 species at 2010 to 2011, respectively. The change of seaweed species is due to the pollution loaded from sewage treatment plant and stream. We thus recommend that the positive maintenance control method like sewage treatment, for the protection of seaweed bed should be proceeded to near coastal area.
Economic Feasibility Analysis of Marine Ecosystem Restoration Technology Program
Kwon, Young-Ju ; Paik, Sang-Kyu ; Yoo, Seung-Hoon ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 2, 2014, Pages 130~142
DOI : 10.7837/kosomes.2014.20.2.130
The Korean government is considering implementation of the marine ecosystem restoration technology program (MERTP) to analyze the current status of the marine ecosystems and causes for the ecosystem deterioration as well as to eventually establish a master strategic plan for restoring ecosystem functions and preventing ecosystem functional loss. In order to determine likelihood of successful implementation, it is essential to perform an analysis of the economic feasibility of the program. The present study assessed economic feasibility of the MERTP. To this end, the dichotomous choice contingent valuation (CV) method is used. In particular, dichotomous choice (DC) format is employed as a method of eliciting willingness-to-pay (WTP) response to incentive-compatible mechanisms. The study also employed the spike model to deal with zero WTP responses from the DC CV survey. This survey of 1,000 randomly selected households in accordance with the guidelines provided by the National Oceanic and Atmospheric Administration (USA) was carried out nationwide in 2013. And, the respondents were asked in person-to-person interviews about their WTP for implementing the MERTP. The results showed that the annual mean WTP was estimated to be 5,414 won per household. Consequently, the annual benefit from the MERTP would be about 98.6 billion won for the next five years. Economic feasibility assessment utilizing the MERTP investment cost and expansion cost of the value provided that net present value, benefit/cost ratio, and internal rate of return are 337.8 billion won, 5.20, and 65.9 %, respectively, which are bigger than 0, 1.0, and 5.5 %, and that the MERTP passes the cost-benefit analysis.
Improvements in the Marine Environmental Survey on Impact of Seawater Qualities and Ecosystems due to Marine Sand Mining
Kim, Yeong-Tae ; Kim, Gui-Young ; Jeon, Kyeong-Am ; Eom, Ki-Hyuk ; Kim, In-Chul ; Choi, Bo-Ram ; Kim, Hee-Jung ; Kim, Jin-Min ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 2, 2014, Pages 143~156
DOI : 10.7837/kosomes.2014.20.2.143
We reviewed investigation status on turbidity plume in the statement of marine environmental survey(2008 to 2012) associated with marine sand extraction projects. The survey statement from seven marine sand extraction sites (extraction area of Southern EEZ, extraction area of Western EEZ, relocation zone in the Western EEZ, sea area under jurisdiction of Taean-gun, sea area under jurisdiction of Ansan City, and two discrete sea areas under jurisdiction of Ongjin-gun) in the nearshore and offshore of Korea showed that in situ observations were carried out for the dispersion and transport of suspended sediments on two areas (One is a extraction area in the EEZs, the other is an area of coastal sites). However, sampling station and range have not been selected considering physical, geographical factors (tide, wave, stratification, water depth, etc.) and weather conditions (wind direction and velocity, fetch, duration, etc). Especially turbidity plumes originating from three sources, which include suspended sediments in overflow(or overspill) discharged from spillways and reject chutes of dredging vessel, and resuspended sediments from draghead at the seabed, may be transported to a far greater distance outside the boundary of the extraction site and have undesirable impacts on the marine environment and ecosystem. We address that behaviour of environmental pollutants such as suspended solids, nutrients, and metals should be extensively monitored and diagnosed during the dispersion and transport of the plume. Finally we suggest the necessity to supplement the current system of the sea area utilization consultation and establish the combined guidelines on marine sand extraction to collect basic data, to monitor cumulative effects, and to minimize environmental damages incurred by the aftermath of sand extraction.
Improvement for Marine Environmental Impact Assessment on the Coastal Development Project Type
Kim, In-Cheol ; Jeon, Kyeong-Am ; Kim, Gui-Young ; Eom, Ki-Hyuk ; Kim, Young-Tae ; Choi, Bo-Ram ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 2, 2014, Pages 157~164
DOI : 10.7837/kosomes.2014.20.2.157
This paper suggested the improvement of marine environmental impact assessment of different types of project by analyzing the consultation on the coastal area utilization(133cases) of the coastal development project for 4years(2010-2013). According to the analysis results, the erosion protection project needs to precede the accurate analysis of erosion reasons, predict exactly possible problems and establish the systematic system to verify the effect of erosion protection by monitoring after projects. The construction projects of revetments and coastal roads have to require to sublate, examine the reliability in structures, give consideration to the problems of coastal erosion by increase of reflected waves. In addition, flooding protection projects have got to require to select the waves for evaluation items in conjunction with the effects of abnormal waves. furthermore, waterfront construction projects need to establish comprehensive and methodical space plans and reinforce the review to conserve the natural environment and conduct nature-friendly development. There are many problems inherently related to coastal development Project. To these problems, however, it is required to support the project on the side of the legislation and conduct additional studies reflecting the characteristics by sea areas and projects.
A Study on Connectivity between Maritime Traffic Safety Audit Scheme and Sea Area Utilization Impact Assessment
Lee, Sang-Il ; Cho, Ik-Soon ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 2, 2014, Pages 165~171
DOI : 10.7837/kosomes.2014.20.2.165
This study aims to examine whether Marine sand mining business is Maritime Traffic Safety Audit and priority between Maritime Traffic Safety Audit and Sea Area Utilization Impact Assessment because development and action to use in the ocean is ambiguous, it is overlapped with system of environmental aspect, and priority is not designated. Therefore, the way to improve to settle the overlapping problem etc. between Maritime traffic Safety Audit and Sea Area Utilization Impact Assessment was suggested and legal ground for sand mining is suggested. Because management department for Maritime Safety Act and Marine Environment Management Act is Ministry of Oceans and Fisheries, the solution for this is both embodying co-experts on each committee for determinant of system with maintaining contact and radical revise of law. If revised, the possibility of accident in ocean is decreased, and it can be a way to protect marine environment.
A Study on the Anchoring Safety Assessment of E-Group Anchorage in Ulsan Port
Lee, Yun-Sok ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 2, 2014, Pages 172~178
DOI : 10.7837/kosomes.2014.20.2.172
This study suggests the minimum critical external forces based on the assessment of anchoring safety to single anchor situation for representative 8 number of ships in E-group anchorage of Ulsan port. Assessment of anchoring safety is compared holding powers of anchor with external forces of wind, wave and current. Holding powers was reflected materials of seabed, equipment numbers regarding anchor and chain weight, also external forces acting on a hull was calculated considering projected wind area and wetted surface area to the full and ballast conditions respectively. The results of anchoring safety assessments to single anchor showed that the minimum criteria of dragging anchor is a little different from ship's type, size and loading conditions. Bulk carrier can be dragged over the 15m/s of winds and Tanker can be dragged over the 13m/s of winds in case of less than 2knots of currents speed.
A Study on the Strategy of Parties Concerned with regard to the Ban of the Use of Asbestos on Ships
Ha, Weon-Jae ; Kim, Jong-Ho ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 2, 2014, Pages 179~185
DOI : 10.7837/kosomes.2014.20.2.179
A use of Asbestos onboard was banned by the provisions of SOLAS since 1 January 2011. And this provision was also implemented by the Rule for Ship's Facilities in Korea. However, these provisions were only declaration and there were no detailed measures for detect, removal and confirmation. In this study, by reviewing the Ship Recycling Convention, IMO circulars and Asbestos Safe Management Act, the following strategies for each concerned parties were proposed. The administration and class society should establish the provisions for appointment of subject vessel which to be inspected for asbestos, criteria for asbestos management and appointment of handling expert. The shipbuilder and equipment manufacturer should make written confirmation that asbestos was not used in their product. And shipowner and ship manager should establish procedure for onboard control of asbestos in the ship's safe management system.
Study on the Vessel Traffic Safety Assessment for Routeing Measures of Offshore Wind Farm
Yang, Hyoung-Seon ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 2, 2014, Pages 186~192
DOI : 10.7837/kosomes.2014.20.2.186
In this paper, we analysed vessel traffic volume and patterns of traffic flow for ships using areas where included wind farm site and adjacent waters of Daejeong Offshore Wind Farm, and estimated traffic volume by classified navigational routes according to suggestion of rational routeing measures on the basis of classified patterns after installation of offshore wind facilities. Also, we assessed vessel traffic safety for each designed routeing measures on the basis of estimated traffic volume and proposed requisite countermeasures for the safe navigation of ships. With a result of analysing patterns of traffic flow, the current traffic flow was classified by 8 patterns and the annual traffic volume was predicted to 8,975 ships. On the basis of these, expected the vessel traffic volume according to designed four routeing mesaures after installation of wind farm. As result of assessing vessel traffic safety by using powered-vessel collision model of SSPA on the basis of the estimated traffic volume, the value of collision probability was less than safe criteria
. Thereby we made sure usability of the designed routeing measures for the safe navigation of ships.
A Study on the Ship's Speed Control and Ship Handling at Myeongnayang Waterway
Kim, Deug-Bong ; Jeong, Jae-Yong ; Park, Young-Soo ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 2, 2014, Pages 193~201
DOI : 10.7837/kosomes.2014.20.2.193
This study provided safe sailing speed and appropriate passing time to areas of known strong current water to prevent marine accident of the ships. To the interpretation of these data which target Myeongnyang waterway, AIS data of the ship was collected from
July 2010 and site environment was investigated on
September 2010. On the basis of the collected data, the 'Minimum Navigation Speed' and 'Optimum Navigation Speed' were calculated. It has also considered the 'Spare control force' or allowance and the 'Respond Rudder Angle' for each tidal current speed. Additionally, it suggested the safe passing time to strong current area by analyzing tidal level and tidal current speed. The conclusion of the research are as follows : (1) If the flow rate is greater than 4.4 kn, it is difficult for the model ship to control herself by her own steering power and to cope with tidal current pressure force and yaw moment caused by the tidal current.. (2) The minimum navigation speed should be over 2.3 times the tidal current and the optimum navigation speed should be over 4.0 times the tidal current. (3) When spring tide, the optimum passing time at Myeongnyang waterway is between 30 minutes to 1 hour before the time of high/low water, and at 5 hours after high/low water, passing of ships should be avoided because it is time when the flow rate is over 4 kn.
A Study on the Development of the Position Detection System of Small Vessels for Collision Avoidance
Le, Dang-Khanh ; Nam, Teak-Kun ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 2, 2014, Pages 202~209
DOI : 10.7837/kosomes.2014.20.2.202
In this paper, a developed device for detecting target's location and avoiding collision is proposed. Velocity and acceleration model of target are derived to estimate target's information, i.e. position, velocity and acceleration considering process and measurement noise. Kalman filtering method applied to the estimation process and its results was confirmed by simulation. The distance measurements system using laser sensor for moving target system is also developed to confirm the effectiveness of the proposed scheme. Experiments to get information of moving target with velocity and acceleration model was executed. The data with filtering and without filtering was compared by experiments. Discontinuous measured data was changed to smooth and continuous data by Kalman filtering. It is confirmed that desired data was obtained by applying proposed scheme. UI for measuring and monitoring the target data is developed and visual and auditory alarm function is attached on the system Finally, position estimation system of moving target with good performance is achieved by low price equipments.
A Study for Improvement of Korea's ODA in the Scope of Maritime Affairs and Fisheries through Analysis on Norms of OECD DAC
Ham, Gi-Young ; Min, Young-Hun ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 2, 2014, Pages 210~217
DOI : 10.7837/kosomes.2014.20.2.210
In this paper, the volume of ODA of Korea to developing countries has been analysed quantitatively based on statistical information, compared with Korea's ODA in the scope of the maritime industry. Thereafter, norms and policies of ODA in OECD DAC and trends of ODA in international societies have been examined through literature and qualitative researches so that possible ways to forward in Korea's ODA have been proposed. Hence, in this paper it h as been recognized that the volume of ODA related with the Korean maritime industry has been standing still as the before despite tremendous increase of total volume of Korea's ODA. for last 10 years. Consequently, the paper would like to propose possible measures that might been taken by the Korean government to raise the volume of ODA related with the maritime industry.
Basic Research for Resistance Prediction of Aluminium Alloy Plate Girders Subjected to Patch Loading
Oh, Young-Cheol ; Bae, Dong-Gyun ; Ko, Jae-Yong ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 2, 2014, Pages 218~227
DOI : 10.7837/kosomes.2014.20.2.218
In this paper, it performed to the elastic-plastic large deflection series analysis using the experimental model and predicted a failure mode and ultimate strength. The collapse mode of numerical analysis model is formed a plastic hinge on loaded flange and consistent with the collapse mode of experimental model. Also, The yield line is formed in the web could observed that have occurred the crippling collapse mode and the ultimate loads of the experimental model and numerical analysis model have maintained linearly Means 1.07, Standard deviation 0.04, Coefficient of variation(COV) 0.04 and the result of ultimate loads have appeared approximately 8% error rate. it was found that very satisfied to the experimental results and the applied rules. if it is considered to be maintain a reasonable safety level, it is possible to predict the failure modes of aluminium alloy plate girders and ultimate loads.
A Study on Motion Sickness Incidence due to Changes in the Speed of the Training Ship Kaya
Han, Seung-Jae ; Ha, Young-Rok ; Lee, Seung-Chul ; Lee, Chang-Woo ; Kim, In-Chul ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 2, 2014, Pages 228~233
DOI : 10.7837/kosomes.2014.20.2.228
In this paper, the motion performance in waves for the training ship Kaya of Pukyong National University is obtained by using a computer program based on Strip method. To guarantee the pleasant seafaring in ocean, the vertical acceleration of ship motion is calculated according to the location of the ship. The results of calculation by changes of ship speed are compared with the guideline of MSI(Motion Sickness Incidence). The degree of motion sickness is shown and discussed through the comparison between calculated vertical acceleration spectrum and MSI guideline. The computational results of MSI were as follow; when ship speed increased in the order of 5 knots, 10 knots, 12 knots and encounter angle became the bow quartering sea of
, the vertical acceleration values grew higher.
Analysis of Sound Insulation Performance of Honeycomb Composite Panels for Cruise Ships
Kwon, Hyun-Wung ; Hong, Suk-Yoon ; Roh, Jae-Ouk ; Song, Jee-Hun ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 2, 2014, Pages 234~240
DOI : 10.7837/kosomes.2014.20.2.234
In this paper, the interface matrix of honeycomb composite panel has been derived by the governing equation of a honeycomb sandwich panel. The interface matrix of honeycomb panel is added to the previously developed transfer matrix method, thus analysis of the multi-layered insulation composite panel with honeycomb is accomplished. Furthermore, predictions of sound transmission loss(STL) for the ship's insulation panel with honeycomb and mineral wool are presented. The insulation performance of the honeycomb used for skin of the ship's insulation panel is better than that of 0.35 mm steel panel by 2dB, approximately. Although honeycomb panel has inefficient insulation performance beside steel panel, honeycomb panel achieve improvements in the performance of weight reduction. The surface density of the panel with honeycomb is rather than with steel by
. It is decrease in weight by 31.7 %.
Flow Characteristics around Underwater Triangular Structure with Different Inclination
Choe, Sang-Bom ; Cho, Dae-Hwan ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 2, 2014, Pages 241~246
DOI : 10.7837/kosomes.2014.20.2.241
The purpose of this study is to investigate the flow characteristics around underwater triangular structure with various inclination and Reynolds number. A flow fields around the triangular structure model were measured by visualization method and PIV in the circulating water channel. The result of the experiment is where the triangular structure that has a inclination of
and the reynolds number at
showed rising velocity component to 2.7 times of the structure height. When the reynolds number is steady and when the inclination is greater the descending velocity component of the structure's rears current form is greatly shown and for the areas where it's more than y/hs=1.75 has a change in the angle of inclination but it doesn't give a great effect to it.
Analysis of Littoral Currents by the Coupled Hydrodynamic Model
Lee, Jong-Sup ; Kwon, Kyong-Hwan ; Park, Il-Heum ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 2, 2014, Pages 247~258
DOI : 10.7837/kosomes.2014.20.2.247
To evaluate the influence of the external force components on the littoral currents in the Gusipo beach, Jeonbuk, West Coast of Korea where a wide tidal sand flat developed, a coupled hydrodynamic model considered real time tidal currents and wave-induced currents was constructed in which the EFDC for tides and tidal currents, the SWAN for waves and the SHORECIRC for wave-induced currents were used as the hindcasting models. A series of field observations for tides, tidal currents and incident waves were carried out and especially to observe the littoral currents in the tidal sand flat, the GPS mounted and light weight drogues were used. Also wind data were collected from the adjacent weather station. To analyze the littoral current components, the numerical drogue tracking results considered real time winds, tides and waves were compared with the field drogue data. The drift speed of numerical drogues was reproduced as the range of 68.0~105.2% compared with the field data and the velocity error of main direction component showed a good result as -16.7~10.0%. As a result, in the mild slope tidal flat including wide surf zone, the tides and winds were the major affection component of the littoral currents, on the other hand, the wave-induced currents seemed the minor component when the incident wave heights were relatively small.