• Title/Summary/Keyword: Saemangeum Seawall

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Computational Flow Analysis on Wind Profile Change Projected to a Wind Turbine Behind Saemangeum Seawall (새만금 방조제에 의한 풍력터빈 입사풍 변화의 전산유동해석)

  • Woo, Sang-Woo;Kim, Hyun-Goo
    • New & Renewable Energy
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    • v.9 no.1
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    • pp.6-11
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    • 2013
  • Jeollabuk-do has announced a future plan for the Saemangeum Wind Farm which includes the installation of fourteen wind turbines in a single line, located 500m back from the Saemangeum Seawall. It is anticipated as a positive effect that, for sea breeze blowing toward land, the average wind speed could be accelerated and the wind speed distribution could be uniformized by dint of the seawall, an upstream structure of the turbines. At the same time it is also anticipated as a negative effect that the strength of wind turbulence could be increased due to the flow separation generated at the back end of the seawall. According to the results of the computational fluid dynamics analysis of this paper, it has been observed that, at the 50m zone on the road surface located at the uppermost part of the Saemangeum Seawall, the average wind speed has been accelerated by approximately 6~7% and that wind shear has been decreased by 70%, but this positive effect disappears in the zone situated beyond the 100m from the back end of the seawall. It has also been observed that flow separation exists to a limited extent only below the bottom of the blade-sweeping circle and, furthermore, does not extend very far downstream of the wind. As a conclusion, it can be said that the seawall neither positively nor negatively affects the proposed Saemangeum Seawall Wind Farm layout.

The Progress of the Saemangeum Project? (새만금 간척사업 어떻게 진행되고 있나?)

  • Kang, Young-Seung
    • Journal of the Korean Professional Engineers Association
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    • v.39 no.3 s.186
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    • pp.27-31
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    • 2006
  • The Saemangeum project, which began in 1991, is designed to convert about 120 million pyeong of mud flats into farmland and a reservoir by building a 33-kilometer seawall off the coast. Many scientists and specialists will continue to monitor and study the effects of the damming up and how it will affect the ocean environment. The long-term plans and visions for development of Saemangeum are needed.

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Tourist Behavior of Bi-eung Port in Gunsan (군산 비응항 방문객의 관광행태에 관한 연구)

  • Lee, Jeong-Rock;Park, Jong-Chun;Kim, Hye-Young;Yoo, Sun-Kyung;Yoon, Yi-Na
    • Journal of the Korean association of regional geographers
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    • v.17 no.6
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    • pp.753-765
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    • 2011
  • Tourist behavior has been a major topic in tourism research. Since the construction of Saemangeum seawall, May 2010, it has been working actively to make a tourist complex fishing port project of Bi-eung port, with the increase of tourists visiting to Saemangeum seawall and Bi-eung port. The purpose of this study is to analyze tourist behaviors conducted in Bi-eung port of Gunsan area. Most of the tourists were the residence of the Jeonbuk, and one-day tourists mostly consisted of families and friends. It was examined that the main destinations were Saemangeum seawall and Bi-eung port. The major complaints of tourists were the lack of parking and convenience facilities. In order to activate the tourism of Bi-eung port, it is required the landscape maintenance and place marketing of Bi-eung port. The satisfaction indicators about tourism base on facilities such as accessibility, promotion and information, tourism products and food, linkage of tourist places and tourism resource with surrounding areas, and the related tourism programs show as below average, respectively. Seven kinds of tourism infrastructure as measured by indicators below average in satisfaction with the analysis but Comprehensive assessment as a tourist destination was the relatively high levels.

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High Loading for Air Pollution in the Byunsan Peninsula of Korea by an Interplay of the Saemangeum Project and Winter Monsoon

  • Ma, Chang-Jin;Kang, Gong-Unn;Kim, Ki-Hyun
    • Asian Journal of Atmospheric Environment
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    • v.6 no.3
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    • pp.234-243
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    • 2012
  • The wintertime high loading for atmospheric pollutants is certainly expected in the Byunsan Peninsula of Korea because of a great-scale reclamation project having construction of 33 km tidal sea dike impounding an area of over 40,000 ha and long-range transport. The goal of this study is to trace the origin of this wintertime burden for ambient particulate matter (hereafter called "PM") in the Byunsan Peninsula of Korea. The size-segregated (i.e., cutoff size from 0.01 ${\mu}m$ to 4.7 ${\mu}m$) PM sampling was conducted at a ground-based site of Byunsan Peninsula located in the west coast of Korean Peninsula during the height of dike constructing. Data archived in this study are the mass concentrations of ionic, elemental, and carbonic components in size-fractioned PM. The elemental mass of individual submicrometer particles was also analyzed. The sum of 5-source (i.e., elemental carbon, organic materials, inorganic secondary pollutants, crustal matter, and sea-salts) concentrations shows the bimodal distribution (major and minor peaks formed around $D_p$, 0.65 ${\mu}m$ and $D_p$, 4.7 ${\mu}m$, respectively) by border with 0.19 ${\mu}m$ of cutoff size. The concentrations of EC in $PM_{1.1-0.01}$ in winter and spring times were 4.62 ${\mu}g\;m^{-3}$ and 3.74 ${\mu}g\;m^{-3}$, respectively. Elemental masses of submicron individual particles are classified into two groups, i.e., the major elements (Cl, Al, Si, S, and P) and the minor trace elements. Cluster analysis differentiated the elements in submicron individual particles into 4-cluster. Among them, three clusters are in agreement with the major (Al, Si, S, and P), minor (Fe, Ca, and K), and trace compositions of coal burning. Meanwhile, Cl classified as an independent cluster has different source profile which was mainly due to the Saemangeum seawall project. Some highly toxic elements (e.g., Cr, Mn, and As (and/or Pb)) were also detected in some part of submicron individual PM. As a consequence, the combination of the Saemangeum project and winter monsoon played a considerable part in the double aggravation of wintertime air pollution in the Byunsan Peninsular.

Chemically Aged Asian Dust Particles Proven by Traditional Spot Test and the Most Advanced micro-PIXE

  • Ma, Chang-Jin;Tohno, Susumu;Kang, Gong-Unn
    • Asian Journal of Atmospheric Environment
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    • v.10 no.2
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    • pp.114-123
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    • 2016
  • A change in chemical compositions of Asian dust (AD) particles can dramatically alter their optical properties, cloud-forming properties, and health effects. The present study was undertaken to evaluate this aging of AD particles by means of two complementary methods (i.e., the traditional spot test and the most advanced micro-PIXE analytical technique) for single particle analysis. Size-classified particles were sampled at the rural peninsula of Korea (Byunsan, 35.37N; 126.27E) during AD event and non-AD period in 2004. Sulfate was principally enriched on the particles in the size range of $7.65-10.85{\mu}m$ collected during AD event. The average number fraction of coarse particles ($>2.05{\mu}m$) containing chloride was 16.2% during AD event. Relatively low particles containing nitrate compared to those containing sulfate and chloride were found in AD event. Micro-PIXE elemental maps indicated that a large number of AD particles were internally mixed with man-made zinc. The highest peaks of EC and OC concentrations were appeared at $0.01-0.43{\mu}m$ particle aerodynamic diameter. High EC concentration in $PM_1$ was might be caused by the Saemangeum Seawall Project that was being conducted during our field measurement.

A Study on the Comparison of Areas Near Gunsan according to the Revision of the National Air Pollutant Emissions (CAPSS) in 2020 (국가대기오염물질 배출량(CAPSS)의 2020년 산정 방법 개정에 따른 군산 인근지역 비교에 관한 연구)

  • Sang-Hun Park;Seong-Cheon Kim
    • Journal of Environmental Health Sciences
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    • v.49 no.4
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    • pp.190-200
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    • 2023
  • Background: Gunsan has been constantly affected by pollutants generated by the Saemangeum development and the construction industry since the completion of the Saemangeum seawall on April 27, 2010. However, there are limitations to its study, such as taking into consideration weather conditions, geographical factors, and foreign inflows. Objectives: In this study, we compared the Existing-CAPSS emissions of Gunsan with Recalculated-CAPSS emissions data to analyze the differences in emissions characteristics by year (2016~2019). Methods: Using Existing data on CAPSS emissions (2016~2019) and Recalculated-CAPSS emissions (2016~2019) for Gunsan, which were Recalculated following the improvement of emissions calculations for 2020, we organized CO, NOX, SOX, PM10, VOCS, and NH3 emissions by substance and investigated the differences and characteristics of the Recalculated emissions by year. Results: For Re-CO and Re-PM10, the emission characteristics of CO were examined as energy industry combustion and PM10 emission characteristics were examined as ship cargo from non-road transportation sources, as ship leisure sources were excluded from non-road transportation source emissions. Conclusions: Comparing the emissions of Existing-CAPSS and Recalculated-CAPSS in Gunsan, the emissions of Recalculated-CAPSS by substance decreased by 39.76% for CO, 9.98% for PM10, 5.53% for VOCS, and 9.24% for NH3, while Re-NOX increased by 2.86% and Re-SOX increased by 1.97%. On the other hand, when comparing the emissions characteristics of Existing-CAPSS and Recalculated-CAPSS in Gunsan, Jeonju, and Iksan, the emission characteristics of Re-NOX, Re-SOX, Re-VOCS and Re-NH3 were similar to those of Ex-NOX, Ex-SOX, Ex-VOCS, and Ex-NH3. As such, Gunsan, Iksan, and Jeonju, showed differences in the comparison of different emission characteristics due to the geographical characteristics of the region (population, area, topography, weather factors) and the characteristics of the industrial complex (metal, petrochemical).