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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 21, Issue 6 - Dec 2015
Volume 21, Issue 5 - Oct 2015
Volume 21, Issue 4 - Aug 2015
Volume 21, Issue 3 - Jun 2015
Volume 21, Issue 2 - Apr 2015
Volume 21, Issue 1 - Feb 2015
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Temporal and Spatial Variations of Sea Surface Temperature in Jinju Bay in the South Coast of Korea
Choo, Hyo-Sang ; Yoon, Eun-Chan ;
Journal of the Korean Society of Marine Environment & Safety, volume 21, issue 4, 2015, Pages 315~326
DOI : 10.7837/kosomes.2015.21.4.315
Temporal and spatial variations of surface water temperature in Jinju Bay for the period of 2010~2011 were studied using the data from temperature monitoring buoys deployed at 17 stations in the south coast of Korea. Water temperature shows the maximum late in January and the minimum early in August. Seasonal variation of water temperatures at the north part of the bay is smaller than the middle and the south. In summer, the lowest and the highest of maximum water temperature are distributed around Jijok Channel which is located at the south of the bay. The fluctuations of water temperatures at Noryang and Daebang Channel are smaller than others because of vertical mixing caused by passage of strong tidal currents. Wind and strong currents affect on the stratification of the surface water layer near Daebang Channel. High temperatures come in frequently around the north area when eastward constant flows appear at neap tide as blowing westerly in the springtime at Noryang Channel. Spectral analyses of temperature records show significant peaks at 7~20 day periods at Noryang Channel, 7~20 day and semidiurnal at the west coast of Changsun Island and Jijok Channel and 7~20 day and diurnal at the middle of the bay. Temperature fluctuation at Noryang Channel shows high coherence and has leading phase with those at other stations in the bay. However, the phase of temperature fluctuation at Noryang Channel falls behind that at Daebang Channel. Daebang Channel has an influence on the temperature fluctuation only at the west and middle part of the bay. Cross-correlation analyses for the temperature fluctuation show that Jinju Bay could be classified into six areas; Noryang Channel, the area of convergence and divergence at the north, Daebang Channel, the west coast of Changsun Island, the mixing area at the middle of the bay and the south inside of the bay, respectively.
Spatial Variability of in situ and GOCI and MODIS Chlorophyll and CDOM in Summer at the East Sea
Park, Mi-Ok ; Shin, Woo-Chul ; Son, Young-Baek ; Noh, Tae-Geun ;
Journal of the Korean Society of Marine Environment & Safety, volume 21, issue 4, 2015, Pages 327~338
DOI : 10.7837/kosomes.2015.21.4.327
Because of impact on the underwater light field, CDOM can influence the accuracy of global satellite-based measurement of ocean chlorophyll and primary productivity. So we investigated the distribution and seasonal variation of CDOM in the East Sea during summer 2009 and 2011. Among them we report two distinctively different summer cases between 2009 and 2011 year, in which showed the different main sources for CDOM. Regulating factors and sources of CDOM in the East Sea were examined. Comparison between in situ and satellite derived Chl a and CDOM were made to find an influence of CDOM on measurement of satellite derived Chl a. Similar pattern and matching of MODIS Chl a with in situ Chl a 2009 was comparable, but significant discrepancy between MODIS Chl a and in situ Chl a was found, when CDOM was high in summer of 2011. GOCI data showed better matching with in situ data for both Chl a and CDOM, compared to MODIS data in summer of 2011. The presence of high CDOM at the surface layer supplied by vertical mixing seems to affect on the overestimation of Chl a by satellite data.
The Effect of Warmer Water Temperature of Walleye Pollock (Gadus chalcogrammus) Larvae
Yoo, Hae-Kyun ; Byun, Soon-Gyu ; Yamamoto, Jun ; Sakurai, Yasunori ;
Journal of the Korean Society of Marine Environment & Safety, volume 21, issue 4, 2015, Pages 339~346
DOI : 10.7837/kosomes.2015.21.4.339
We examined the effect of warm temperature on the survival of larvae of walleye pollock and on their swimming behavior during the four days of post-hatch. Observations were conducted on larvae in Petri dishes and in 85 cm tall, cylindrical tanks that had a warmer upper layer and cooler lower layer separated by a small thermocline. Mortality was carried out in four temperature ranges from
. The number of days to 50 % mortality (
) was longest (18.7 days) at
and decreased with increasing temperature to 10.3 days at
were similar level to that at temperature 3.1 and
(17.9 days). Larval responses to warmer temperatures varied depending on developmental stages. 2dph larvae changed the distribution to the thermocline of the water column. And, 3dph larvae had a ability for escaping from the unfavourable warmer temperature. These results suggest that the warmer water negatively affects the larval survival.
Distribution and Pollution Assessment of Trace Metals in the Surface Sediments around Farming Area of Jinhae Bay
Choi, Tae-Jun ; Kwon, Jung-No ; Lee, Garam ; Hwang, Hyunjin ; Kim, Youngsug ; Lim, Jae-Hyun ;
Journal of the Korean Society of Marine Environment & Safety, volume 21, issue 4, 2015, Pages 347~360
DOI : 10.7837/kosomes.2015.21.4.347
Trace metals(As, Cd, Co, Cr, Cu, Fe, Hg, Mn, Pb and Zn) concentrations in surface sediments of Jinhae bay in August of 2013 were measured to investigate the characteristics of trace metals distribution and to evaluate the metal pollution. Assessment for metal pollution was carried out using the sediment quality guidelines(SQGs) such as threshold effects level(TEL) and probable effects level(PEL) proposed by the ministry of onceans and fisheries(MOF) in Korea and geochemical assessment techniques(enrichment factor(EF) and geoaccumulation index (
)). The mean concentration of trace metals in the sediments are as follows: 11.1 mg/kg for As, 0.52 mg/kg for Cd, 14.1 mg/kg for Co, 69.8 mg/kg for Cr, 57.2 mg/kg for Cu, 3.7 % for Fe, 0.064 mg/kg for Hg, 600 mg/kg for Mn, 40.1 mg/kg for Pb, 167.2 mg/kg for Zn. The spatial distributions of As, Co, Cr and Fe were not distinguished clearly in whole area. However, Cd, Hg, Pb and Zn were high in northern area of bay, and Cu and Mn were high in southeastern and eastern area of bay, respectively. The distribution pattern of trace metals, correlation matrix and R-mode factor analyses results revealed that the distribution of trace metals were mainly effected by the sediment grain size(Co, Cr and Fe), redox condition of sediments(Mn) and anthropogenic factors(As, Cd, Cu, Hg, Pb and Zn). Comparing the concentrations of several trace metals(As, Cd, Cr, Hg and Pb) with SQGs from Korea(TEL and PEL), the concentrations of Hg, Cd and Pb in sediment of northern area of bay were higher than TEL. EF and
values of As, Cd, Cu, Hg, Mn, Pb and Zn showed that these metals in sediments are enriched by anthropogenic activities in some areas, and pollution status for Cd, Hg and Pb in northern area and Cu in southeastern area of bay were concerned about current level, although those for As, Mn and Zn were not.
Assessment and Improvement of Documentation Status on the Statements for the Sea Area Utilization Consultation according to the Project of Ports and Fishery Harbors
Tac, Dae-Ho ; Oh, Hyun-Taik ; Kim, Gui-Young ; Lee, Dae-In ;
Journal of the Korean Society of Marine Environment & Safety, volume 21, issue 4, 2015, Pages 361~371
DOI : 10.7837/kosomes.2015.21.4.361
This study analyzed the 91 cases of the statements for the Sea Area Utilization Consultation according to the developmental projects of ports and fishery harbors for 2012 2014 and the status of the record of document, and suggested the improvement way to go. The marine environmental timpact assessment items both marine chemistry such as water quality, sediment and marine biology such as benthic animal, plankton, and fisheries show highly rate of site survey. But, the utilization of those data through site survey is too low, and it is necessary to adopt the QA/QC for the reliability of survey data. The items of marine physics such as tide, tidal current analyzed based on references not a site survey. However, the simulation performed actively without calibration and verification compared to the result of site survey. When the projects of port and fishery harbor perform, it is necessary to monitor the physical parameter such as wave, tide and tidal current especially. Based on the scale and the type of project, we need introduce the system of scoping for prediagnosis the key assessment items and checklists.
Variation of Physical Environment near the Artificial Upwelling Structure during the Summer
Seo, Ho-San ; Kim, Dong-Sun ;
Journal of the Korean Society of Marine Environment & Safety, volume 21, issue 4, 2015, Pages 372~380
DOI : 10.7837/kosomes.2015.21.4.372
In order to study the characteristics of physical environment in water column around the artificial upwelling structure, CTD and currents measurements were carried out along line observations. Before installation of artificial upwelling structure was installed, the stratification of water column existed 30m in water depth. After installation of artificial upwelling structure, however, stratification formation depth and strength changed depending on currents directions. It seems that the change of stratification has a close relation with upwelling of lower temperature water. After installing the artificial upwelling structure, the distributions of vertical flows were analyzed. Local upwelling and downwelling flows showed a distinct time and spacial changes. Local upwelling flows caused by artificial upwelling structure appeared 100 times larger than coastal upwelling in the South-East Sea of Korea. Upwelling flows generated by the artificial structure raised the high concentration of nutrients to upper layer from lower layer breaking stratification in the summer. Thus, upwelling structure plays an important role for vertical water circulation improving the food environments by increasing primary production.
Survey and Analysis of User Opinion for the Review and Modernization of GMDSS and Implementation of e-Navigation
Lee, Bo-Kyeong ; Kong, Gil-Young ; Kim, Dae-Hae ; Cho, Ik-Soon ;
Journal of the Korean Society of Marine Environment & Safety, volume 21, issue 4, 2015, Pages 381~388
DOI : 10.7837/kosomes.2015.21.4.381
Global Maritime Distress and Safety System (GMDSS) equipment and Electronic Chart Display & Information System (ECDIS) are typical equipment which help seafarers to obtain information for ship`s safe navigation. In this study, a survey on using of GMDSS equipment and ECDIS was conducted on a total of 260 ship masters and crew who have been working on ocean-going vessels. The subjects were asked about the usage, and level and reason of satisfaction or dissatisfaction of GMDSS equipment and ECDIS, the leading navigational system from which they receive information. The survey showed that the third- and fourth-most frequently used equipment, MF/HF and INMARSAT (telex), were deemed to be the second- and third-most useless equipment. It means that the frequency of device usage is not proportionate to the level of navigational safety. Especially, `ease of device use (42.3%)` and `necessity of the provided information (50%)` were highlighted as factors increasing the level of satisfaction with the system. The survey result shows that ship safety cannot be realized by only adopting advanced systems, technology and services. It emphasizes the need to consider the level of `accessibility and appropriateness of the information` and `ease of device use`. Discussions implemented by the IMO on various policies and regulations are aimed at securing ship safety. In order to achieve the goal, such institutions should be validated by end-users and relevant studies should be conducted.
A Study on the Introduction and Application Plan of the Mobile Saturation Diving System for ROK Navy Salvage Operations
Yu, Ho-Hwi ; Kang, Sin-Young ; Lim, An ;
Journal of the Korean Society of Marine Environment & Safety, volume 21, issue 4, 2015, Pages 389~396
DOI : 10.7837/kosomes.2015.21.4.389
This study examined how to improve the Korean Navy diving system, particularly focused on using the mobile saturation diving system. This study determined the range of navy operations, and suggested requirements of mobile saturation diving system from the analysis of previous study and current Navy Diving system. Also, this study examined the use of military strategy in terms of its technical and applicable possibility for the enhancement of current system. In addition, the study analyzed both advantages/disadvantages of importing mobile saturation diving system products and domestic development. To review measures in installing and operating such system, this study included analysis on the effectiveness of individual platform. As the result, the study suggested requirements of mobile saturation diving system to be able to be operated by more than 6 divers for more than 17 days at more than 200m depth. And the study confirmed that there are beneficial to use mobile saturation diving system and current Navy saturation diving system together. However, it is low economical efficiency to change current Navy gas diving system to Saturation diving system. To review measures in installing and operating such system, this study suggested that second ATS-II should be built to be able to install mobile saturation diving system. Also, this study generated an utilization method of the system to use it for training when peacetime, and than it should be installed on other platform to use as additional salvage strength during wartime.
A Study on the Observation Days of Maritime Traffic Investigation
Yoo, Sang-Lok ; Park, Seong-Book ; Park, Young-Soo ; Jeong, Jae-Yong ;
Journal of the Korean Society of Marine Environment & Safety, volume 21, issue 4, 2015, Pages 397~402
DOI : 10.7837/kosomes.2015.21.4.397
This study is to compare variation indexes by monthly, weekly and hourly using AIS data, which was collected for 365 days from January 1st to December 31st, 2013 at Mokpo Port and then, computed the maximum standard error by observation days. The comparison of monthly variation indexes showed that the monthly variation indexes for September and February were 1.11 and 0.84, respectively, in turn revealing that the maritime traffic in September was about 32.1 % larger than February. Also, the daily variation indexes for Tuesday and Sunday were 1.05 and 0.92, respectively, in turn revealing that the maritime traffic in Tuesday was about 14.1 % larger than Sunday. When the maritime traffic investigation is executed for at least 1 week in consideration of the daily variation index, it is possible to reduce the maximum standard error rate to be within 21 %. Therefore, if the maritime traffic investigation is made in the month and week with low maritime traffic, each variation index should be applied to reflect the actual maritime traffic.
A Study on the Development of Text Communication System based on AIS and ECDIS for Safe Navigation
Ahn, Young-Joong ; Kang, Suk-Young ; Lee, Yun-Sok ;
Journal of the Korean Society of Marine Environment & Safety, volume 21, issue 4, 2015, Pages 403~408
DOI : 10.7837/kosomes.2015.21.4.403
A text-based communication system has been developed with a communication function on AIS and display and input function on ECDIS as a way to complement voice communication. It features no linguistic error and is not affected by VHF restrictions on use and noise. The text communication system is designed to use messages for clear intentions and further improves convenience of users by using various UI through software. It works without additional hardware installation and modification and can transmit a sentence by selecting only via Message Banner Interface without keyboard input and furthermore has a advantage to enhance processing speed through its own message coding and decoding. It is determined as the most useful alternative to reduce language limitations and recognition errors of the user and solve the problem of various voice communications on VHF. In addition, it will help to prevent collisions between ships with decrease in VHF use, accurate communication and request of cooperation based on text at heavy traffic areas.
A Study on Systematic Management of Civilian Forces for Efficient Search and Rescue Mission in the Ocean
Soon, Gil-Tae ;
Journal of the Korean Society of Marine Environment & Safety, volume 21, issue 4, 2015, Pages 409~420
DOI : 10.7837/kosomes.2015.21.4.409
In this study, I researched, analysed and compared the examples of civilian maritime search and rescue auxiliaries of world leading countries` such as Japan and America, and the Korean volunteer fire fighting team. Through this, I suggest that the decentralized civilian maritime search and rescue forces of Maritime Rescue and Salvage Association and KCG Civilian Auxiliary should be united into unified search and rescue system and establish legal basis for stabilized support and development. It seem that we should organize laws and regulations for the government to have centralized control of rescue mission as in the cases of America and Canada and elivate rescue mission capability with systemized education and training entrusted to specialized external training organization. I proposed to establish financial support such as fund for the stabilized status of civilian auxiliary, domestic and overseas training session for the civilian auxiliary to inspire integrity and sense of duty as a part of maritime search and rescue forces.
A Study on the Lights and Shapes for the Small Fishing Vessel and the Vessels Towing and Being Towed
Chong, Dae-Yul ;
Journal of the Korean Society of Marine Environment & Safety, volume 21, issue 4, 2015, Pages 421~427
DOI : 10.7837/kosomes.2015.21.4.421
This study aims at reviewing first the cases of marine accidents of small fishing vessels and vessels towing and being towed and, the problems concerning such lights and shapes that could be misunderstood for those in concerned Rules, or that could impair their distinctive characteristics or obstruct to keep a proper look-out. And then I wish to make a suggestion of the necessity of amending the National Laws which stipulate the rules for the ship`s lights and shapes as follows; Firstly, by amending the "Standard of Construction and Equipment for the Less Than 10 Gross Tonnage of Small Fishing Vessels" small fishing vessel must be equipped with the lights and shapes that are the same as those of "vessel engaged in fishing" prescribed by Rule 26 of the "COLREG 1972" and Rule 84 of the "Maritime Safety Law Act". Secondly, "Standard of Fishing Vessels Equipment" which stipulate the rules concerning the exception of the running lights and radar reflector for the small fishing vessels must be amended to meet the requirement of Rule 20 of the "Maritime Safety Act". Thirdly, the definition of "Length of the tow" which prescribed by Rule 2 of the "Maritime Safety Act" must be amended to meet the Rule 24 of the "COLREG 1972". And also I wish to adhere to the importance of displaying the adequate vessel lights and shapes by every mariner for preventing marine accidents.
A Study of Legislation for The Offshore Support Business Revitalization - Focusing on the amendment of Maritime Transport Act -
Jin, Ho-Hyun ; Lee, Chang-Hee ;
Journal of the Korean Society of Marine Environment & Safety, volume 21, issue 4, 2015, Pages 428~436
DOI : 10.7837/kosomes.2015.21.4.428
This paper considered the concept and characteristic OSV operation business for support the offshore plant and suggested amendment Maritime Transportation Laws, legislative proposals to solve the legal absence and to develop offshore service industry. Because Maritime Transportation Laws specialized for the carriage of passenger and goods by sea is not perfectly covered with Offshore support business in Korea. So it is necessary to make an explicit amendments for the article of Maritime Transportation Laws that founds absence of the law with the definition of terms to correspond related existed regulation reflected on the characteristic offshore support business by using OSV to develop offshore plant industry including support, service, supply, transportation etc. I expect that this paper will be a basic study to make a government policy, law, regulation to activate Offshore Service Industry in the future.
A Study on the HSE Monitoring System based on Smart Device for Establishing Evaluation System of the Combined Safety Index
Woo, Jong-Hun ; Lim, Hyun-Kyu ; Youn, Kyung-Won ; Ham, Dong-Kyun ;
Journal of the Korean Society of Marine Environment & Safety, volume 21, issue 4, 2015, Pages 437~448
DOI : 10.7837/kosomes.2015.21.4.437
In this paper, smartphone based measuring device was developed by integration of several sonsors such as moving, temperature, pulsation, respiration and hearing and sever/client programs was developed for the data acquisition and communication between smartphone and server computer. Then, the concept of CSI(combined safety index) was proposed for the comprehensive diagnositcs of workers status. For the validation of the proposed concept, the real data was acquired by boarding at training ship of korea maritime and ocean university. The acquired data was analyzed with the stochastical method of regressionn, then the meaningful result was driven that could explain the relation between the risky situation and the measured chronical data.
A Numerical Study on the Appendage Shape for a Heave Motion Reduction of Floating Cylindrical Structure
Lim, Geun-Nam ; Kim, Sang-Hyun ; Kim, Dong-Young ;
Journal of the Korean Society of Marine Environment & Safety, volume 21, issue 4, 2015, Pages 449~456
DOI : 10.7837/kosomes.2015.21.4.449
In this paper, attaching various damping plates to the cylindrical structure and performing numerical simulations try to study heave RAO and natural period for cylinder. Most of all, we identified heave RAO of the cylinder by simulations of the motion and the wave. And then, we performed numerical simulations by changing the size and shape of heave damping plate attached to the cylinder and reviewed the heave RAO and natural period for each case. The conclusions of this research are as follows. Firstly, the natural period of cylindrical structure is increased by attached to the cylinder with heave damping plate and the heave RAO of cylindrical structure is reduced in the peak period for incident wave by attached to the cylinder with from the size of 1.30D for heave damping plate. Secondly, circular plate has long natural period than Y-type plate in all of these sections. Finally, the motion response spectrum considering the marine environment of Piranema field was identified as the heave motion of cylindrical structure is remarkably reduced with both circular plate and Y-type plate in the peak period for incident wave.
A Study on the Lifecycle of the Offshore Plant and the Simulation with DMU and Ergonomics
Lee, Yong-Gil ; Woo, Jong-Hun ;
Journal of the Korean Society of Marine Environment & Safety, volume 21, issue 4, 2015, Pages 457~466
DOI : 10.7837/kosomes.2015.21.4.457
In this paper, the academic research on the value chain and the supply chain of offshore business are conducted for the investigation of the offshore business comprehensive configuration. Then, the assembly and ergonomic simulation was conducted for the purpose of advanced validation of offshore project.. With respect to the simulation analysis, the assembly simulation model(w.r.t. drill ship) and the ergonomic simulation model(w.r.t. FPSO) are constructed. Through the assembly simulation of drillship, the production processes could be validated in terms of availability. Also, the problem of topside design of FPSO was found by ergonomic simulation.