• Title/Summary/Keyword: 새만금

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Settling Characteristics of Saemankeum fine-Cohesiv Sediments : Effects of Physico-Chemical Properties (새만금 미세점착성 퇴적물의 침강특성 : 퇴적물의 물리.화학적 특성의 영향)

  • Hwang, Gyu-Nam;Jo, Yong-Sik
    • Journal of Korea Water Resources Association
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    • v.35 no.5
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    • pp.475-484
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    • 2002
  • A series of settling tests and physico-chemical property tests on Saemankeum fine-cohesive sediments has been conducted in order to investigate the correlation between settling properties and their physico-chemical properties which are represented as grain size distribution, mineralogical composition, and percentage of organic contents. Experimental results of physico-chemical property tests show that Saemankeum sediments are relatively large in average grain size(52${\mu}{\textrm}{m}$), and contain very small organic materials(2%), and are dominantly composed of Quarts in mineralogical aspect which has relatively low cohesion. Thus, Saemankeum sediments might be specified as the sediments whose settling properties are more influenced by the gravity than the cohesion. This characteristics of Saemankeum sediments are found to lead to relatively small settling velocity in flocculated settling region in which increasing cohesion results in increasing settling velocity, while relatively large settling velocity in hindered settling region in which settling velocity decreases with increasing cohesion.

The Saemangeum: History and Controversy (새만금: 역사와 갈등)

  • Koh, Chul-Hwan;Ryu, Jong-Seong;Khim, Jong-Seong
    • Journal of the Korean Society for Marine Environment & Energy
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    • v.13 no.4
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    • pp.327-334
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    • 2010
  • The paper describes the history and the evolution of the conflict of the Saemangeum reclamation project, focusing on the court trial processes. The Saemangeum project is the world largest coastal reclamation work, regarded as the most controversial environmental issue in the recent history of Korea. Due to the severe pollution found in Lake Sihwa in 1996, the Saemangeum project began to receive a large degree of public concern on the water quality of the proposed artificial freshwater lake. Unlike the Sihwa case, the Korean court system intervened to resolve the heated conflicts between stakeholders in the Saemangeum case. Based on the same set of facts, the Korean courts showed different perspectives on the economic feasibility, value of the ecosystem, land use, and water quality, which represents the limit of legal system to address complicated environmental problems. After the final judgment by the Supreme Court, 'the Special Act for the promotion of the Saemangeum reclamation project', was enacted with strong political support from local leaders and congressmen. A more developmental-oriented land use plan came out in 2009 based on this Act. The Saemangeum project walked along the different pathway from the Sihwa case. The area should be managed in sustainable manners to appropriately consider conservation and development for the prosperity of local residents and future generations.

A Study on the Determinant Factor Analysis for the Characterization of Saemangeum New Port (새만금신항만 특화에 관한 결정요인 분석에 관한 연구)

  • Kim, Nam-Suk;Choe, Do-Won;Jeon, Young-Hwan
    • Journal of Korea Port Economic Association
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    • v.28 no.1
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    • pp.263-288
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    • 2012
  • This study aims to define which factors will contribute to vitalization of Saemangeum New Port to secure international competitiveness in order to attract international shipping companies, shippers and forwarders in constructing Saemangeum New Port, and to propose subsequent implications. For research methods of the current study, a factor analysis and a decision making method of analytic hierarchy process(AHP) were used. Through precedent studies, total 11 measuring variables were selected including short entrance and exit channels, main infrastructure development project, tax cut and deregulation, and through a factor analysis, total 3 high rank evaluation factors including 'location and facilities', 'surrounding infrastructure and hydrophile property', and 'local policy and environment'. Analysis results summarizing a test of reliability of measuring variables in this study indicate that as Cronbach alpha coefficient of total 11 measuring variables were turned out to be over 0.8, it is surpassing general average 0.6, which means there is reliability.

Development of Camera Monitoring System for Detecting the Opening Status of Saemangeum Sluice Gate (새만금 갑문 개폐 자동 영상 관측 시스템 개발)

  • Kim, Tae-Rim;Park, Jong-Jib;Jang, Seong-Woo
    • Journal of the Korean Association of Geographic Information Studies
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    • v.14 no.1
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    • pp.73-83
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    • 2011
  • The opening status of Saemangeum sluice gate is an important factor to the coastal water qualities near Saemangeum dikes. The sluice gate opening information is important in analysing current velocity and water quality data measured at the Saemanguem observation tower as well as in determining boundary conditions of numerical simulation for coastal environment outside Saemangeum dikes. This study establishes unmanned camera monitoring system on Saemangeum observation tower using mini notebook and digital camera, and extracts information on the opening status from images automatically. Images are analysed using variance difference of images together with edge detection techniques in order to get correct information.

Environmental considerations on the function and value of tidal wetland (갯벌의 기능과 가치에 대한 환경학적 고찰)

  • Bark, Chang-Hee;Lee, Sang-Hoon
    • Journal of Environmental Impact Assessment
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    • v.13 no.2
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    • pp.87-101
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    • 2004
  • 최근 논란이 되고 있는 새만금간척사업에 대한 환경영향평가서를 최초 작성할 당시는 갯벌의 가치를 사업의 편익에 포함시키지 않았으나, 이후 환경단체에서는 새롭게 부각된 갯벌의 기능과 가치를 포함시켜 경제성 분석을 다시 할 것을 주장하였다. 이 자료에서는 지금까지 발표된 갯벌과 논의 가치 비교와 새만금사업의 경제성 분석을 검토하였다. 갯벌의 가치에 대하여 금전적인 평가를 한다는 것은 주관적인 요소가 개입하게 되므로 여전히 학자 간에도 의견이 일치하지 않으며 경제성 분석에 포함할 항목에 대해서도 합의가 이루어지고 있지 않아서 일반인에게는 매우 혼란스럽기만 한다. 새만금사업환경영향공동조사단의 공동조사에서는 우리나라 최초로 갯벌의 정화능력 실험과 설문조사를 통한 갯벌의 가치 평가를 시도하였다. 그러나 연구자가 검토한 결과 새만금사업 편익 총액의 51%를 차지하는 국토확장효과가 과대하게 평가되고 농산물 증산액과 논의 공익가치 역시 과대하게 평가되어 경제성 평가를 왜곡시켰다고 판단된다. 갯벌의 기능과 가치에 대한 평가는 앞으로 객관적인 연구결과에 의존해야 하며 환경학계의 검증을 거치는 작업이 필요하다고 본다.