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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 15, Issue 4 - Dec 2009
Volume 15, Issue 3 - Sep 2009
Volume 15, Issue 2 - Jun 2009
Volume 15, Issue 1 - Mar 2009
Selecting the target year
Effects of Water Temperature Inversion on the Stratification Variation in October and December in the South Sea of Korea
Lee, Chung-Il ; Koo, Do-Hyung ;
Journal of the Korean Society of Marine Environment & Safety, volume 15, issue 3, 2009, Pages 165~171
In order to illustrate the effects of water temperature inversion on the stratification variation in the South Sea of Korea, water temperature, salinity, and density measured in October and December 1999 by National Fisheries Research and Development Institute were reviewed. In October and December of 1999, temperature inversion occurred mainly between 25m and 75m, and in particular in depth of water, in December temperature inversion layer also was formed in the surface layer. In case of October and December, the Tsushima Warm Current (TWC), warm and saline water, was one of motors, and in December, influence of surface cold water was added Although northerly wind prevails in October and December, in October, expanding of the South Korean Coastal Waters (SKCW) towards offshore is not clear, but in December when wind speed is relatively greater than that in October and strength of the TWC become weak, the SKCW spreads towards offshore through the upper layer. Stratification variation was higher along the area where temperature inversion occurred.
Seasonal Variations in Species Composition and Biomass of Epiphytic Algal Community in an Eelgrass (Zostera marina) Bed
Kwak, Seok-Nam ;
Journal of the Korean Society of Marine Environment & Safety, volume 15, issue 3, 2009, Pages 173~177
A total of 3 epiphytic macroalgae were collected from eelgrass bed in Jindong Bay, and Scytosiphon lomentaria and Colpomenia sp. in Phaephyta, Gracilaria sp. in Rhodophyta occurred during study periods. For epiphytic microalgae (diatoms), Cocconeis scutellum and Cocconeis placentula were common species. Seasonal variations of epiphytic algal biomass were marked: the higher epiphytic macroalgae was 3.3 g
in November 2003; whereas epiphytic diatoms were 43,153
in June 2003. Diversity and number of epiphytic macroalgae species were the lowest in the study area, compared with those of in other areas such as Koongyang Bay, Dongdae Bay, and Aenggang Bay. These results were therefore likely due to the severe physical characteristics of the intertidal mudflat eelgrass biological characteristics, and the deterioration of water quality.
Species Composition and Distributional Patterns of Marine Benthic Algae at Intertidal Zone in Masan Bay
Kwak, Seok-Nam ; Huh, Sung-Hoi ;
Journal of the Korean Society of Marine Environment & Safety, volume 15, issue 3, 2009, Pages 179~185
The species composition and distributional patterns in marine benthic algae at intertidal zone in Masan Bay were investigated seasonally throughout 2007. A total of 42 species, 5 Chlorophyta 8 Phaeophyta and 29 Rhodophyta were recorded, and dominant species were Enteromorpha linza, Ulva pertusa, Sargassum thunbergii, Gelidium amansii, G. divaricatum, Corallina pilulifera, Gracilaria textorii, and Polysiphonia morrowii during study periods. Especially the vertical distribution of dominant algal species was remarkable: U. pertusa and G. divaricatum were dominated in the upper part, E. intestinalis, E. linza, S. thunbergii and G. divaricatum were in the middle part, and U. pertusa, Undaria pinnatiffda, S. thunbergii, G. amansii, G. divaricatum and C. pilulifera mainly occurred in the low part of tidal zone. The numbers of species were different with seasons and stations; Higher number of species was 38 species in winter, whereas 28 species were the lowest in fall. The number of species was higher at stations 4 and 6 Mile the lower value was at stations 1 and 2 than other stations. The spatial distributional patterns of marine benthic algal composition at each station in dendrogram and MDS ordination were due to the differences of local topography and physical characteristics such as currents and water movements.
Marine Environmental Characteristics in Western Coastal Waters of the South Sea of Korea
Cho, Eun-Seob ; Kim, Sang-Soo ; Lee, Sang-Yong ; Jeong, Hee-Dong ; Kim, Sook-Yang ;
Journal of the Korean Society of Marine Environment & Safety, volume 15, issue 3, 2009, Pages 187~203
This study monitored marine environments in system coastal waters of the South Sea of Korea during the period of 2005-2007 and analyzed the data from environmental parameters and nutrients, which contributed to fluctuate marine environmental characteristics in aquaculture. On the basis of the fluctuation of temperature depending on seasons and sampling sites, too seasons of winter and summer showed a remarkable temperature gap of
compared with spring and autumn. Salinity in spring and summer approached 9 psu in Morkpo. Most of sampling sites showed COD below 2mg/L, indicating somewhat optimal environmental conditions. T-N and T-P also had desirable horizontal distributions all year round the concentration of SS was higher, but Chi. a was well-distributed horizontally except for Morkpo. Marone environmental parameters of surface water were similar to those of bottome water except for Morkpo. Most of sampling sites showed the ratio of N/P below 16, impling that nitrogen played an important role in growth of phytoplankton as a limiting factor. The relationship between Chi. a and nutrients was positive linear, whereas the relationship between Chi. a and COD were very strong positive. winder, Spring and Summer showed the strong relationship between Chi. a and COD. In the analysis of dendogram based on environmental parameters using SPSS ver. 10.0, the station 7 did not belong to other stations, and kept an independent place. The relationships of waters between Jindo, Wando and Heanam ware close, compared with other waters. Consequently, these regions except for Morkpo into which fresh water is introduced by the dike showed somewhat optimal environmental parameters and nutrients in year, and were assumed to maintain the desirable marine conditions for aquaculture.
Analysis on Response System in US for Chemicals Driven Marine Pollution Accidents and Korean Response Policy Plan
Choi, Jong-Wook ; Lee, Seung-Hwan ;
Journal of the Korean Society of Marine Environment & Safety, volume 15, issue 3, 2009, Pages 205~212
With an entry into force of OPRC-HNS on June 14th 2007, response system against any large scale accidents related to HNS is required to respond rapidly and effectively in a national scale, US national response system and national contingency plan for any chemicals in operation were analyzed to understand the characteristics of management system and response system for any HNS driven accidents in the Us. Main characteristics of the US system were well described as an unified information window and an integrated incident command system supported by response facilities, manpower and technical support from other response organizations through good cooperation. In general, response activities are conducted by private sectors, however, the government will take over response activities in case large scale accidents occur in the Us. Expected expenses for response activities are covered by a type of Superfund in the Us. Several applicable ways are proposed to enable NGO to participate in and reorganize response system in ROK, and are feasible in collaboration with other response organizations and private sectors in the aspects of equipment, technology and manpower, Based upon the above activities, it is desirable to reorganize domestic rules and/or regulations related to response measures in ROK.
A Feasibility Study on Joining "The Supplementary Fund Protocol"
Cho, Dong-Oh ; Mok, Jin-Yong ; Baek, Kwang-Shik ;
Journal of the Korean Society of Marine Environment & Safety, volume 15, issue 3, 2009, Pages 213~216
Since adopting 1969 CLC and 1971 FC, IMO increased maximum amount of compensation by adopting protocols of 1969 CLC and 1971 FC. Recently IMO adopted 2003 Supplementary Fund by which the compensation limits increased dramatically to 750 million SDR. Korea government has only entered 1992CLC/FC. However, since the Hebei Spirit incident in 2007, there have been strong claims that Korea government should enter 2003 Supplementary Fund. In this article, feasibility study was carried out to help Korea government decide whether or not entering the Convention. The quantitative analysis has been carried out using data of the past oil spill accidents and contribution fee to IOPC Fund and showed that the benefit was much bigger than costs. The qualitative analysis in relation to resources fix compensation to victims, benefits of consignee, and the status of Korea in IMO also showed that Korea should ratify the 2003 SF.
A Basic Study on the Fatigue Analysis Model for Marine Officers
Yang, Won-Jae ;
Journal of the Korean Society of Marine Environment & Safety, volume 15, issue 3, 2009, Pages 217~222
Safe navigation is closely related to the fatigue of marine officers. Also, the fatigue of duty officer can cause serious marine accidents. In this study, the documentary survey about the marine officers' working environments, fatigue factors and symptoms was conducted. And the questionnaire survey which is related to the fatigue analysis factors such as sleepiness, mental physical workload and alcohol for apprentice officers was carried out, and the results of questionnaire survey were analyzed. Lastly, on the basis of this study, the fatigue analysis model was suggested in order to assess the marine officers' performance in the future.
A Study for the Evaluation of the Force by the Wind on the Ship at Anchoring
Jung, Chang-Hyun ; Kong, Gil-Yong ;
Journal of the Korean Society of Marine Environment & Safety, volume 15, issue 3, 2009, Pages 223~228
By the typhoon "MAEMI" in 2003, a lot of marine accidents such as stranding, collision etc. occurred to the vessels at anchor in "JINHAE MAN" which was considered one of the most safe sheltering anchorage in Korea. These accidents resulted from the dragging of anchor by the strong winds. It needs to compare the external forces with the holding powers of anchors to estimate if the anchor will be dragged or not. However, the calculation of the force by the wind on the ship, in particular, on the wind pressure area which changes by the swinging of her bow is not yet set on a thesis. Therefore, this paper verified that how many times the front wind pressure area should be applied to calculate the force by the wind on the ship at anchor by comparing and analyzing the numerical calculation with, the actual ship's data which was really dragged by the strong wind.
A Study on Contracting-Out of Busan Port Pier Management Corporation
Kim, Sang-Goo ; Gang, Yun-Ho ;
Journal of the Korean Society of Marine Environment & Safety, volume 15, issue 3, 2009, Pages 229~236
This paper intended to find rational alternatives for contracting-out of duties of the Busan port Pier Management Corporation, which is facing the merger and abolition, and of which main functions include the management of port facilities such as International Passenger Terminal, Cruise Terminal and Coast Passenger Terminal. This paper searched appropriate term, needs (merits), proper scope and cost of the contracting-out of that port facilities. The result of the analysis indicated that the best policy is to privatize the Busan port Pier Management Corporation itself to make it an private incorporated company.
A Study on the Necessity of Introducing Marine Spatial Planning in Korea
Chae, Dong-Ryul ;
Journal of the Korean Society of Marine Environment & Safety, volume 15, issue 3, 2009, Pages 237~242
Recently demands for marine development are increasing due to limitation of land-based resources, occurrence of the demands for the new materials and the increase of marine transportation among nations. Development activities in marine area give rise to external dis-economic effects to marine species and their habitats. Marine Spatial Planning(MSP) is a system devised to seek sustainable use of marine ecosystem, and to overcome conflicts between conservation and development This paper 1) analysed the effects of MSP in three aspects: economic, ecological and political effects, 2) explained reasons why MSP is necessary in the Korean marine policy and 3) suggested the prerequisites for successful adaptation of MSP in Korea.
A Study on Development of the Low Electrical Power Echo Sounder System for Coastal Use
Park, Ju-Sam ;
Journal of the Korean Society of Marine Environment & Safety, volume 15, issue 3, 2009, Pages 243~250
The expression of signal to noise ratio (SNR) is derived for the individual echo sounder and for the general specifications of commercial echo sounder. The SNR is depicted by several factors on transmitting and receiving, sound propagation, scattering by fishes, and mainly self ship noise. The detection ranges of echo sounders in depth and breadth are derived by finding the border of an acceptable SNR. The detection ranges are computed for the echo sounders of individual and general specifications. Generally, the detection range is lager for low frequencies. Increasing an electrical power and a diameter of transducer is not as effective for high frequencies as for low frequencies to increase the detection range. The theoretical results of the detection range can be applied to design low electrical power echo sounder for coastal use, to select an appropriate echo sounder, to know the capability of a sounder, and to interpret echograms. A method for evaluating and designing low electrical power echo sounder is developed. A universal diagram for the basic design of the low electrical power echo sounder where SNR is plotted against frequency is developed. An appropriate frequency, transducer diameter, and beam width are easily determined by using the diagram.
A Study on PIV Measurement of Unsteady Flow around Disk caused by Slide Type Valve Quick Closing
Lee, Chul-Jae ; Cho, Dae-Hwan ;
Journal of the Korean Society of Marine Environment & Safety, volume 15, issue 3, 2009, Pages 251~256
In this research, we experimentally studied flow characteristic by applying PIV measuring techniques which could measure the point velocity of all flow field and measuring the unsteady velocity of surrounding disk generated in a short time. Time range of great velocity change following quick closing of the slide valve was within 0.1s and the cycle was presumed to be 0.12s as a result of comparison study between the result of point flow field and of existing pressure change. Also, surrounding disk flow inside the circular pipe was closed from the upper part and flow road was getting narrow and advanced to the lower part incidentally quickly there was a tendency that the size of the flow back velocity to the upper part immeadiately after the closure decreased to 4/120s and increased again. There was flow back velocity component in y/D=0.2 lower part by the influence of flow back to the upper part after complete closure and the vortex flow of 0.2D-size near y/D=0.7, x/D=-0.3 was observed.
A Study on the Determination of Optimal UPFC Location
Bae, Cherl-O ;
Journal of the Korean Society of Marine Environment & Safety, volume 15, issue 3, 2009, Pages 257~262
The unified power flow controller(UPFC) is one of the most effective devices in the FACTS family. This paper concerns about a filtering technique for reducing the computer calculation to determine the optimal location of UPFC in a power system. The sensitivities of the power generation cost for UPFC control parameters are evaluated. This technique requires that only one optimal power flow is run to get UPFC sensitivities for all possible transmission lines. To find out a optimal locating of a single UPFC in power system, an ideal transformer model which consists of a complex turns ratio and a variable shunt admittance was used. In this model, the UPFC control variables do not depend on UPFC input and output currents and voltages. The sensitivity method was tested on a 5-bus system derived from the IEEE 14-bus system and IEEE 14-bus system to establish its effectiveness.
The Cooperative Environmental Research in the Yellow Sea between Korea and China for the Establishment of Cooperative Management Plans on the Yellows Sea Conservation
Heo, Seung ; An, Kyoung-Ho ; Park, Soung-Yun ; Park, Jong-Soo ; Kang, Young-Shil ; Shon, Jaek-Young ; Kim, Pyoung-Joong ; Kim, Hyung-Chul ; Hwang, Woon-Ki ; Lee, Seung-Min ; Hwang, Hak-Jin ; Choi, Yong-Suk ; Ko, Byeong-Seol ; Bang, Hyun-Woo ;
Journal of the Korean Society of Marine Environment & Safety, volume 15, issue 3, 2009, Pages 263~268
The Yellow Sea is extremely important to the economy and to the health and well-being of surrounding countries, Korea and China. Recently, the Yellow Sea is under constantly increasing threat of degradation due to the increase of environmental pollution and over-fishing. The governments of Korea and China have been aware of the importance of the Yellow Sea and reached an Environmental Agreement between Korea and China at the governmental level(November, 1993) According to this environmental agreement the Yellow Sea Environmental Cooperative Research between Korea and China has been undertaken since 1997. The joint cruise had been conducted once a year at 33 stations in the 4 lines of the Yellow Sea where the 9 stations of the D line was newly added in the 7th cruise in 2003. The samples were analyzed by scientists of both countries at the WSFRI, Korea and the OEMNC of the SEPA, China in turn, the annual report has been published every year during 1998-2008. The scientific efforts to fix the cruise time in October and to extend research frequency, as twice a year, should be considered, and this requires the governmental supports such as research funds and other related administrational assistance on both sides. Finally, scientists should also pay a concentrated attention to standardize the analytical methods including quality control and to improve this Yellow Sea research as one of the most representative international projects in the Yellow Sea where sharing additional informations available, if exist of dumping sites and material content, and of the freshwater quality will be of great help to broaden the output of this joint research project.
A Developing Tendency of Liquefied Natural Gas Carriers
Lee, Dong-Sup ;
Journal of the Korean Society of Marine Environment & Safety, volume 15, issue 3, 2009, Pages 269~274
Recently, the construction of Liquefied Natural Gas Carriers(LNGC) is being promoted larger and larger depending on long voyage. In 1950 years,
class of LNGC had been changed to
class in 1973. and to
class in 2007. Especially, the system of main engines and cargo control, Re-liquefaction of natural gases have become possible in LNGC. This research deals with the LNG projects, world markets of energy and developing tendency of liquefied natural gas carriers.