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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 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
Growth and Production of Pseudoblennius cottoides in an Eelgrass (Zostera marina) Bed of Dongdae Bay, Korea
Kim, Ha-Won ; Huh, Sung-Hoi ; Kwak, Seok-Nam ; Lee, In-Cheol ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 5, 2014, Pages 461~467
DOI : 10.7837/kosomes.2014.20.5.461
The growth and production of Pseudoblennius cottoides (1.80~10.01 cm TL) were investigated in an eelgrass bed of Dongdae Bay, Korea throughout 2006. A total 702 P. cottoides were collected with a small beam trawl. Growth in fish total length was expressed as:
. The relationships between total length body weight was estimated as
. The densities, biomass, daily, annual production, and P/B ratio were
, and 1.813, respectively. Monthly production of P. cottoides were greatly peak in May, July and September (0.0029, 0.0031 and
) when the biomass was high, and the lowest value in December (0.00004g AFDW/m^2/day) when the biomass was low. Monthly change in production of P. cottoides was positively correlated with biomass and temperature.
Effect of Daphnia magna on Nanoparticle(ZnO, TiO
) Aggregates in Aqueous System
Lee, Ha-Neul ; Lee, Byeong-Woo ; Park, Chan-Il ; Kim, Mu-Chan ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 5, 2014, Pages 468~473
DOI : 10.7837/kosomes.2014.20.5.468
This study is unrefined ZnO,
nanoparticles is expose M4 medium to search nanoparticle aggregation and Daphnia magna was any effect by immobilization and mortality. ZnO and
nanoparticle powder-size is respectively 20 nm and 40 nm. but, M4 medium has about respectively as 1333 nm and 1628 nm, 40 to 70 times were agglomerated. Immobilization of ZnO and
nanoparticles was influenced both time and concentration the higher to swimming of D.magna. Especially, The immobilization of D.magna in nano-ZnO is greater than that influence in nano-
. Mortality of ZnO nanoparticle is higher rate at long time and high concentration.
nanoparticle observed mortality at 10ppm concentration after 72h. Consequently, when Nanoparticles is introduced into ocean. Particle size become grow. Additionally, aggregation be caused affect aquatic ecosystems.
Temporal and Spatial Variations of Temperature and Salinity around Ganjeol Point in the Southeast Coast of Korea
Choo, Hyo-Sang ; Jang, Duck-Jong ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 5, 2014, Pages 474~485
DOI : 10.7837/kosomes.2014.20.5.474
Temporal and spatial variations of temperature and salinity around Ganjeol Point during January, April, August and November 2011 were studied using the data from CTD observations and temperature monitoring buoys deployed at 20 stations in the southeast coast of Korea. Temperature and salinity were nearly homogeneous through the whole depth by mixing of the seawater in spring and winter related to the sea surface cooling. Stratification induced by the river runoff and the bottom cold water was clear in summer. In autumn, sea water had vertical mixing initiated from surface layer and weak stratification at the middle and bottom layers. Low temperature and high salinity emerged throughout the year near Ganjeol Point, which inferred from turbulent mixing and upwelling by its topographical effect. Major periods of 1/4~1.4 day temperature fluctuations were recorded for the most part of the stations. According to the cross spectral density analysis, high coherence and small time lag for temperature fluctuation between layers were shown at Ganjeol Point. However, those features at the northen area of Hoeya river were opposed to Ganjeol Point. From analyses, thermohaline structure and its fluctuation around Ganjeol Point were characterized into those three parts, the south of Ganjeol Point, Ganjeol Point and the north of Ganjeol Point.
Application and Assessment on the Effectiveness of the Hazard-Based Deployment Model for Oil Recovery Capacity on Water
Ha, Min-Jae ; Moon, Jung-Hwan ; Yun, Jong-Hwui ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 5, 2014, Pages 486~490
DOI : 10.7837/kosomes.2014.20.5.486
In this study, the Hazard-based model to decide regional oil recovery capacity by using AHP is suggested and regional oil recovery capacity is calculated by applying the model. The simulation for oil recovery capacity by mobilization of regional oil recovery equipments is carried out to verify the availability of the model. The worst oil spill accident in Daesan Taean Pyeongtaek region, which is located in geographically disadvantageous position among the regions that the worst oil spill accident may occur, is supposed for the simulation. As a result of simulation, the quantity of oil that can be recovered for three days on the scene of oil spill accident is worked out as
, which can satisfy the goal of national oil recovery capacity for the worst oil spill accident, therefore the model is verified as practicable.
Community Structure and Health Assessment of Macrobenthic Assemblages at Spring and Summer in Garorim Bay, West Coast of Korea
Jung, Rae-Hong ; Seo, In-Soo ; Lee, Won-Chan ; Kim, Hyung-Chul ; Kim, Jeong-Bae ; Choi, Byoung-Mi ; Yun, Jae-Seong ; Na, Jong-Hun ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 5, 2014, Pages 491~503
DOI : 10.7837/kosomes.2014.20.5.491
This study was performed to investigate the community structure and health assessment of macrobenthic assemblages in Garorim Bay, West Coast of Korea. Macrobenthos were collected by van Veen grab sampler at May(spring) and July(summer) 2012. A total of 247 species occurred and mean density was
, both of which were dominated by annelid polychaetes(120 species and
). Dominant species were the polychaetes Ampharete arctica, Lumbrineris longifolia, Mediomastus californiensis and Euclymene oerstedi, with a density of 445(
) and 50(
), respectively. The study area was divided into 3 station group based on the cluster analysis and nMDS ordination. These assemblage were : 1)the group 1 and 2 were associated with coarse sediment dominated stations and 2)the group 3 was connected with a mixed and fine sediment dominated stations group. The BPI and AMBI index were applied to assess the benthic ecological status. The ecological status of the Garorim Bay was "good status(slightly polluted)" to "high status(normal)" at most sampling stations during spring and summer. In conclusion, the two marine biotic index calculated shown that the Garorim Bay had a good ecological status.
Estimation of Pollution Degree of Surface Sediment from Incheon H Wharf
Kim, Jeong-Ho ; Nam, Se-Yong ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 5, 2014, Pages 504~510
DOI : 10.7837/kosomes.2014.20.5.504
In this study, physico-chemical properties and pollution degree of surface sediments collected at 5 stations(S1~S5) of Incheon H wharf in March 2014 were investigated. From particle size, surface area, XRD and XRF analyses, the sediment samples consisted of similar oxides and minerals. Considering total score of COD, AVS and IL, pollution level ranged between 2 and 3 based on domestic standards. In case of heavy metal contamination, Cd, Ni and Pb were classified as moderately polluted by USEPA standards. However, Cu, Zn and Cr were classified as heavily polluted. With geoaccumulation index value(
), Cd contamination was estimated as class 3. In addition, the calculated enrichment factors of Cd, Pb and Zn were exceeded a value of 1. Site S4 was high as 3.1 in total enrichment factor.
Hypoxia Estimation of Coastal Bay through Estimation of Stratification Degree
Jung, Woo-Sung ; Lee, Won-Chan ; Hong, Sok-Jin ; Kim, Jin-Lee ; Kim, Dong-Myung ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 5, 2014, Pages 511~525
DOI : 10.7837/kosomes.2014.20.5.511
Goal of this study is estimating of validity of calculated vertical diffusion coefficient for Masan bay is semi-enclosed bay by using eco-hydrodynamic model that is used to analysis of physical structure of coastal waters and calculates the vertical diffusion coefficient. physical structure of coastal waters is calculated by EFDC model, vertical diffusion coefficient calculated as the density gradient is bigger, the vertical diffusion coefficient as density gradient is increases, the vertical diffusion coefficient is decreased. Validity of vertical diffusion coefficient estimated by reproducibility of concentration of dissolved oxygen that calculated in ecosystem model is constructed by Stella program. The Results of model in 2008~2009 were
value of 2008 is 0.529~0.700 and
value is 0.542~0.791. This results were similar to observed data and simulated to hypoxia at that time. The 'vertical diffusion coefficient' represents stratification and physical stable of a water body, and will be useful for prediction of Hypoxia outbreak.
Transfer Function Model Forecasting of Sea Surface Temperature at Yeosu in Korean Coastal Waters
Seong, Ki-Tack ; Choi, Yang-Ho ; Koo, Jun-Ho ; Lee, Mi-Jin ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 5, 2014, Pages 526~534
DOI : 10.7837/kosomes.2014.20.5.526
In this study, single-input transfer function model is applied to forecast monthly mean sea surface temperature(SST) in 2010 at Yeosu in Korean coastal waters. As input series, monthly mean air temperature series for ten years(2000-2009) at Yeosu in Korea is used, and Monthly mean SST at Yeosu station in Korean coastal waters is used as output series(the same period of input). To build transfer function model, first, input time series is prewhitened, and then cross-correlation functions between prewhitened input and output series are determined. The cross-correlation functions have just two significant values at time lag at 0 and 1. The lag between input and output series, the order of denominator and the order of numerator of transfer function, (b, r, s) are identified as (0, 1, 0). The selected transfer function model shows that there does not exist the lag between monthly mean air temperature and monthly mean SST, and that transfer function has a first-order autoregressive component for monthly mean SST, and that noise model was identified as
. The forecasted values by the selected transfer function model are generally
higher than actual SST in 2010 and have 6.4 % mean absolute percentage error(MAPE). The error is 2 % lower than MAPE by ARIMA model. This implies that transfer function model could be more available than ARIMA model in terms of forecasting performance of SST.
A Study on the Marine Traffic Congestion by Analysis of Ship's Domain
Park, Young-Soo ; Jeong, Jae-Yong ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 5, 2014, Pages 535~542
DOI : 10.7837/kosomes.2014.20.5.535
This research concluded that the area is most sensitively affected by the maritime traffic congestion rather than other factors including the ship's speed and fairway width. We performed a literature review for the area used in Japan, Denmark, and Shanghai ports, and analyzed by comparing with the area in Jinhae, Korea through the observation survey of marine traffic. The result of sensitivity analysis concluded that the congestion is affected by amount of 10% by changing 1 knot of the ship's speed, 18% of 100m of the fairway width, and 34%~43% of 1L of ship's length. By applying the result into the current audit system using
, we found that there is big difference with
in Denmark, and
in Jinhae, Korea. For this reason, further studies should be carried out in near future to the area mostly affected by congestion.
A Study on the AtoN Operational Software Development for the AtoN Management and the Decision Support of its Placement Planning
Kim, Ah-Young ; Lee, Yeong-Ju ; Park, Se-Kil ; Oh, Jae-Yong ; Kim, Yeon-Gyu ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 5, 2014, Pages 543~551
DOI : 10.7837/kosomes.2014.20.5.543
This study has searched to find a program in order to manage simply and practically use the expelled AtoN database from the AtoN Simulator and to support the idea decision for the AtoN placement. It examines a program that manages AtoN database through the hierarchy structure, history card and endowment with condition same as a scenario. And accomplishes this study's goal owing to realizing AtoN operational software that helps for visual, hearing sense, fixed amount verification upon AtoN placement project. The AtoN operational software contributes not only flexible control like a newly establishment, relocation etc, but also supports idea decision for AtoN placement plan through many functions such as condition search, virtual sailing and fixed amount appraisal result exhibition, etc. Through utilization of this, it is to help upon the presupposition of the impact to ship or sailor about many designs and in addition, upon the judgment of whether or not for the efficiency and appropriation of the design. It is expected to reduce possible failure costs and management costs due to AtoN design and placement plans, because to compare more various designs thru the easier verification method.
An Analysis on the Design and Speed Performance of a One-man Boat
Park, Dong-Woo ; Park, Gyeong-Min ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 5, 2014, Pages 552~557
DOI : 10.7837/kosomes.2014.20.5.552
The objective of the This study is to access the speed performance employing the sea trial test and CFD with the our own designed and manufactured one-man boat. The overall design process including hull form design was explained. The sea trial was carried out with a manufactured boat in the clam sea. Brake power at the design speed of a boat through the sea trial was measured as 1680 W. The flow computation was conducted considering free surface and dynamic trim using a commercial CFD code(STAR-CCM+). The result of computation provided the information that residual resistance is bigger than fraction's at design speed. The total efficiency were predicted based on the sea trial and CFD. The Total efficiency was divided into shaft efficiency and quasi-propulsive efficiency. By using quasi-propulsive efficiency, it becomes possible to predict speed performance of boat in future. The results can provide information regarding hull form design, performance analysis and development of a boat in future.
A Study on the Development of Inflatable Life Raft Performance Criteria for Small Fishing Vessels
Kim, Kyung-Woo ; Jang, Cheol-Min ; Park, Jong-O ; Lee, Hee-Joon ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 5, 2014, Pages 558~563
DOI : 10.7837/kosomes.2014.20.5.558
In order to reduce the risk of deaths from hypothermia at sea, this paper suggests the performance criteria of life rafts for small fishing vessels less than 20 m in length. In our country, the life rafts are not used and have no performance criteria. This research compared the performance criteria of the domestic, foreign, international standards, and the performance comparison between foreign life rafts and the user-friendly valise prototype(2 & 4 persons) which is developed by this study. As a result, it is considered to be appropriate that ISO 9650-1 can be applied to the life rafts for offshore fishing vessels while a milder criteria can be applied to the life rafts for coastal fishing vessels.
A Detection System of Drowsy Driving based on Depth Information for Ship Safety Navigation
Ha, Jun ; Yang, Won-Jae ; Choi, Hyun-Jun ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 5, 2014, Pages 564~570
DOI : 10.7837/kosomes.2014.20.5.564
This paper propose a method to detect and track a human face using depth information as well as color images for detection of drowsy driving. It consists of a face detection procedure and a face tracking procedure. The face detection procedure basically uses the Adaboost method which shows the best performance so far. But it restricts the area to be searched as the region where the face is highly possible to exist. The face detected in the detection procedure is used as the template to start the face tracking procedure. The experimental results showed that the proposed detection method takes only about 23 % of the execution time of the existing method. In all the cases except a special one, the tracking error ratio is as low as about 1 %.
A Study on the Navigation Control System against DPRK Vessels Within the ROK Maritime Jurisdictional Area and it's Improvement
Lee, Jae-Kyu ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 5, 2014, Pages 571~578
DOI : 10.7837/kosomes.2014.20.5.571
The boundaries of ROK maritime jurisdictional area remains unclear as two Koreas failed to draw clear maritime boundaries at the armistice agreement and there are no clear maritime boundaries with China and Japan. After the Korean War, the United Nations Command established the northern limit line(NLL) as well as the area of operations(AO) to enforce the DPRK's compliance with the armistice agreement and has been controlling all of the maritime and air activities in the region. ROK also has been controlling the passage of DPRK vessels in the area. Within the AO, third nation vessels have freedom of navigation, Yet, due to the division followed by the Korean War, ROK classifies DPRK as a hostile state and unique controling system is applied to DPRK vessels. Since the establishment of the AO, many changes have been occurring such as adoption of the UN Convention on the Law of the Sea(UNCLOS) and two Koreas' joining the UN. Also, there are continuous inter-Korean conflicts. Therefore, the geographical span of the AO needs to be reconsidered. Furthermore, a legal measure which ensures ROKN vessel's functional capability of controling DPRK vessels must be introduced. This thesis examines post-Korean War DPRK vessel control system in the Korean peninsula as well as how it should be improved.
Analysis of International Standardization Trend for the Application of Fuel Cell Systems on Ships
Park, Sang-Kyun ; Youn, Young-Min ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 5, 2014, Pages 579~585
DOI : 10.7837/kosomes.2014.20.5.579
For the application of fuel cell systems on ship which is future eco-friendly ship technology, it is need that the modification of relevant laws and regulations with relevant technical development. This paper reviews the trend of fuel cell development, SOLAS and IACS UR/UI as a international regulations, international standardization trend such as IMO MEPC, IMO BLG and major classification rules, the consideration for the standard development of ship fuel cell systems, the implications for application of fuel cell systems on ships in Korea. The IGF Code which is developing in the IMO included fuel cell, and thus Korean government and related company should participate in the codification. The analysis of development of IMO's relevant regulations also needed for the preparations.
A Study on the Performance Estimation and Shape Design of a Counter-Rotating Tidal Current Turbine
Kim, Mun-Oh ; Kim, You-Taek ; Lee, Young-Ho ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 5, 2014, Pages 586~592
DOI : 10.7837/kosomes.2014.20.5.586
This study looks at the design of a 100 kW blade geometry for a horizontal marine current turbine using the Blade Element Momentum Theory (BEMT) and by using (CFD), the power output, performance and characteristics of the the fluid flow over the blade is estimated. Three basic airfoils; FFA-W3-301, DU-93-W210 and NACA-63418, are used along the blade span and The distribution of the chord length and twist angles along the blade are obtained from the hydrodynamic optimization procedure. The power coefficient curve shows maximum peak at the rated tip speed ratio of 5.17, and the maximum power reaches about 101.82 kW at the power coefficient of 0.495.
Analysis of Radar Cross Section for Advanced Naval Vessels
Kwon, Hyun-Wung ; Hong, Suk-Yoon ; Lee, Kwang-Kook ; Kim, Jong-Chul ; Na, In-Chan ; Song, Jee-Hun ;
Journal of the Korean Society of Marine Environment & Safety, volume 20, issue 5, 2014, Pages 593~600
DOI : 10.7837/kosomes.2014.20.5.593
In this paper, Radar cross section (RCS) calculations of advanced naval vessels model with RCS reduction methods are simulated and RCS results are discussed. Especially, this paper are mainly focusing on the facts influencing on RCS, the ways minimizing RCS and material characteristics of RCS changing-rate. RCS analysis results are given for a DDG-1000 type advanced naval vessels, which show that as the elevation angle increased 10 degree, the mean RCS value increased 23.91 dBsm. Also, as the superstructure angle increased 6 degree, the mean RCS value reduced 1.27 dBsm. Finally, the radar absorbing material attachment at the front and back superstructure have been reduced 2.27 dBsm in terms of mean RCS value.