• 제목/요약/키워드: Coastal urban area

검색결과 175건 처리시간 0.025초

도시형 중규모기상모델을 이용한 연안도시 해풍전선 발달 분석 (Analysis of Sea-breeze Frontogenesis over the Coastal Urban Area Using Urbanized MM5)

  • 황미경;오인보;김유근
    • 한국대기환경학회지
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    • 제27권4호
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    • pp.416-425
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    • 2011
  • To analyze the physical processes of sea-breeze development over a coastal urban area, numerical simulation for seabreeze (SB) and its frontogenesis was examined based on urbanized MM5 (uMM5) with urban canopy parameterization. On 6 August 2006, SB and its front were well developed in Busan under a weak offshore flow. As a result of wind vector, ZVB (Zero Velocity Boundary), potential temperature obtained the uMM5, at 0900 LST, SB advanced below 200 m height in the coastal areas and the internal boundary grew with the urban coastal region. At noon, the height of the SB head with updraft was approximately one and a half times (~600 m) higher than its depth in central urban. Applying the frontogenesis function, the SB structure for frontogenesis and frontolysis were complicated spatially; the dynamic effects of wind (i.e. convergence and tilting term) could play an important role in the growth of SB, especially the convergence effect.

A Numerical Simulation of Flood Inundation in a Coastal Urban Area: Application to Gohyun River in GeojeIsland in Korea

  • Jeong, Woochang
    • 한국수자원학회:학술대회논문집
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    • 한국수자원학회 2015년도 학술발표회
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    • pp.241-241
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    • 2015
  • In this study, the simulations and analyses of flood flow due to a river inundation in a coastal urban area are carried out using a two-dimensional finite volume method with well-balanced HLLC scheme. The target area is a coastal urban area around Gohyun river which is located at Geoje city in Kyungnam province in Korea and was extremely damaged due to the heavy rainfall during the period of the typhoon "Maemi" in September 2003. For the purpose of the verification of the numerical model applied in this study, the simulated results are compared and analyzed with the inundation traces. Moreover, the flood flow in a urban area is simulated and analyzed based on the scenarios of inflow to the river with the increase and decrease of the intensity of the heavy rainfall.

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선박배출 오염물질의 영향을 고려한 부산지역 대기질 모델의 개발 (The Development of Air Quality Model Considering Shipping Source in Pusan Region)

  • 이화운;김유근;원경미
    • 한국환경과학회지
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    • 제8권1호
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    • pp.135-144
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    • 1999
  • Air quality modeling about coastal urban region such as Pusan shoud be consider shipping source emmited from ships anchoraging and running. It has been proved at our previous studies that the ratios of air pollutants emission amount in coastal area to inland are 12.2% for NO$_2$ and 11.7% for $SO_2$ and the air qualify of coastal urban area consierably counts on ships. Also the dispersion pattern of the all pollutants followed local circulation system in this region. Therefore this study has been developed air quality model which can describe the formation, transport, transformation and deposition processes of air pollutants considering shipping source. Currently, restriction for emission amount of ships does not exist, so our study will be useful to set the omission standard and for devising air quality policy in coastal urban region.

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부산 연안지형 VRS-GPS 계측을 통한 태풍해일 침수예측 (VRS-GPS Measure of Typhoon Surge Flood Determinedin Busan Coastal Topography)

  • 김가야;정광효;김정호
    • 한국해양공학회지
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    • 제26권1호
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    • pp.47-53
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    • 2012
  • A coastal flood area was predicted using the empirical superposition of the typhoon surge level and typhoon wave height along the Busan coastal area. The historical typhoon damages were reviewed, and the coastal topography was measured using VRS-GPS. A FEMA formula was applied to estimate the coastal flood area in a typhoon case when the measured and predicted data of typhoon waves are not available. The results in the area of Haeundae beach and Gwangalli beach were verified using the flood area data from the case of Typhoon Maemi (2003). If a Hurricane Katrina class typhoon were to pass through the Maemi trajectory, the areathat would be flooded along theBusan coastal area was predicted and compared with the results of the Maemi case. Because of the lack of ocean environment data such as data for the sea level, waves, bathymetry, wind, pressure, etc., it is hard to improve the prediction accuracy for the coastal flood area in the typhoon case, which could be reflected in the policy to mitigate a typhoon's impact. This paper discusses the kinds of ocean environment information that is needed to predict a typhoon's impact with better accuracy.

연안도시지역의 대기유동장에서 대기오염물질의 확산과 이동에 관한 수치모의 (Numerical Simulation for Diffusion and Movement of Air Pollutants in Atmospheric Flow Coastal Urban Region)

  • 이화운;김유근
    • 한국환경과학회지
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    • 제6권5호
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    • pp.437-449
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    • 1997
  • To predict diffusion and movement of k pollutants In coastal urban region a numerical simulation shouts be consider atmospheric flow field with land-sea breeze, mountain-valley wand and urban effects. In this study we used Lagrangian [article dispersion method In the atmospheric flow field of Pusan coastal region to depict diffusion and movement of the Pollutants emoted from particular sources and employed two grid system, one for large scale calculating region with the coarse mesh grid (CMG) and the other for the small region with the One mesh 914 (FMG). It was found that the dispersion pattern of the pollutants followed local circulation system in coastal urban area and wale air pollutants exhausted from Sasang moved Into Baekyang and Jang moutain, air pollutants from Janglim moved into Hwameong-dong region.

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도시임해부의 집합주택에 있어서 거주환경평가에 관한 연구 - 수변공간에 대한 의식을 중심으로 - (A Study on the Evaluation of Residential Environment in Apartment Houses in the Urban Coastal Area - Focusing on the Consciousness of the Waterfront Space -)

  • 김주홍
    • 대한건축학회논문집:계획계
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    • 제34권4호
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    • pp.113-122
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    • 2018
  • Residentialization is in progress in the coastal areas of the cities as the number of apartment houses rapidly increase with the simultaneous provision-centered development. It would be necessary to provide quality residential environments which would not deteriorate and would be chosen by many people as a sustainable residence in the future through the demand-centered development, considering the residents' consciousness. To do so, it is necessary to understand the residents' consciousness about the residential environment in the coastal area that has differentiated characteristics as a waterfront space through an evaluation of the residential environment, different from the existing residences. This study understands the significance of the waterfront space in the residential environment through people's consciousness when they choose a residence before they reside and people's consciousness when they evaluate the residence after they reside, concerning how the environment of the waterfront space is recognized as compared to other elements of the residential environment according to the geographic characteristics of the coastal area. In addition, this study analyzes the significance of people's consciousness before and after their residence through a comparison according to the change of distance to the waterfront from the perspective of access to the waterfront, the characteristic as a residential environment in the coastal area.

환경친화적 해안지역 건축물 경관계획 지표개발에 관한 연구 (A Study of the Environmentally Friendly Design Indicators of Building Landscape in Coastal Area)

  • 이광영
    • 한국농촌건축학회논문집
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    • 제8권1호
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    • pp.62-69
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    • 2006
  • This study is based on the ecological design method related with the Building Landscape in Coastal Area, basically Building Landscape design theories are affected the visual distance and visual area. The results derived of this study are as follows. First, We established design method of Building Landscape in Coastal Area in consideration of Ecological Environment that is purposed by means of the Normative theory study analysis and contents analysis related with Landscape and Architecture planning theory. Second, We can define 'Micro Landscape', 'Urban Landscape', and 'Wide Landscape'. 'Micro Landscape' are 'Near view'. 'Urban Landscape' are related 'Middle-distance view' and 'Long-distance view'. 'Wide Landscape' are related 'High & Long-distance view'. Third, We can also define 'Ecological Mode', 'Formal Aesthetic Mode', 'Psychological Mode', and 'Semiotical Mode' by the dimensions of macro scale. finally, we define 48 detailed factors types of 3 visual Area of Building Landscape in Coastal Area by the dimensions of micro scale.

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국토공간의 효율적 활용을 위한 연안통합관리체계 개선방안에 관한 연구 (A Study on the Improvement of Integrated Coastal Zone Management System for Efficient Use of National Land)

  • 이길재;이주형
    • Spatial Information Research
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    • 제22권5호
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    • pp.99-107
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    • 2014
  • 연안관리 계획은 연안을 이용방향에 따라 4개의 구역으로 분류하도록 하고 있는데, 각 구역별 연안이용행위의 금지 및 지원사항을 정하도록 하고 있다. 연안구역을 설정할 경우 해당지역이 국토이용계획 및 도시계획에 따라 지역 및 지구로 이미 지정되어 있어 추가적인 구역 설정시 이 같은 점이 중요한 검토기준이 되기도 하지만 경우에 따라서는 상충되는 결과를 초래할 수도 있다. 따라서, 연안관리에 있어서의 범위와 이용구역의 설정에 대한 검토 요소를 분석하고, 기존의 지역 지구지정 현황과의 상충문제 해결을 위한 방안을 도출하기 위한 노력이 필요하다. 보다 정확하고 효율적인 연안관리를 위해 해양에서의 해양공간계획과 토지에서 활용되는 도시계획제도와 지적제도를 활용하여 연안지역을 등록 관리할 필요성이 있다. 이를 위해 국토이용계획, 해양공간계획 등을 종합한 계획을 수립할 수 있는 별도의 협의체 기관 검토, 다른 개별법이 정하고 있는 각종 구역 지역의 지정 상충 검토, 연안해역의 범위 설정(3해리 내), 연안등록 방안 및 등록 대상 등을 모색하였다.

부산 연안의 경관관리제도 개선에 관한 연구 (A Study on Improvement of Coastal Landscape Management Systems in Busan City)

  • 이한석;도근영;조용수;이정재;김나영
    • 한국항해항만학회지
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    • 제26권1호
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    • pp.85-94
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    • 2002
  • 본 연구에서는 문헌조사를 통해 국내외 연안의 경관관리제도를 분석하였으며 먼저 연안의 경관관리에 앞서 가는 미국과 일본 연안도시에서 연안의 경관관리제도를 분석하였고 다음으로 우리나라 연안의 경관관리제도와 부산 연안의 경관관리제도의 현황과 문제점을 분석하였다. 이를 바탕으로 현행 관리체계 내에서 부산 연안의 경관관리제도 개선 방안을 제시하고 동시에 연안의 경관관리제도의 장기적인 개선 방향을 제시하였다. 본 연구결과 연안의 경관은 육지 경관과 바다 경관이 어우러져 구성되기 때문에 도시계획측면에서 보다는 연안관리차원에서 통합적인 관리가 필요하다 이를 위해 연안관리법을 기반으로 지역별로 연안경관관리조례를 만들어 구체적인 연안의 경관관리가 이루어져야 한다. 특히 연안의 경관 특성에 따라 연안경관관리지역을 설정하고 그 안에 경관보전지구, 경관회복지구, 경관계획지구를 두어 지구별로 관리하며 지역의 경관종합계획과 지구별 경관계획지침을 세워야 한다

중/도시규모 기상모델을 이용한 고층건물군이 연안도시기상장에 미치는 영향 수치모델링 (Numerical Modeling for the Effect of High-rise Buildings on Meteorological Fields over the Coastal Area Using Urbanized MM5)

  • 황미경;오인보;김유근
    • 한국대기환경학회지
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    • 제28권5호
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    • pp.495-505
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    • 2012
  • Modeling the effects of high-rise buildings on thermo-dynamic conditions and meteorological fields over a coastal urban area was conducted using the modified meso-urban meteorological model (Urbanized MM5; uMM5) with the urban canopy parameterization (UCP) and the high-resolution inputs (urban morphology, land-use/land-cover sub-grid distribution, and high-quality digital elevation model data sets). Sensitivity simulations was performed during a typical sea-breeze episode (4~8 August 2006). Comparison between simulations with real urban morphology and changed urban morphology (i.e. high-rise buildings to low residential houses) showed that high-rise buildings could play an important role in urban heat island and land-sea breeze circulation. The major changes in urban meteorologic conditions are followings: significant increase in daytime temperature nearly by $1.0^{\circ}C$ due to sensible heat flux emitted from high density residential houses, decrease in nighttime temperature nearly by $1.0^{\circ}C$ because of the reduction in the storage heat flux emitted from high-rise buildings, and large increase in wind speed (maximum 2 m $s^{-1}$) during the daytime due to lessen drag-force or increased gradient temperature over coastal area.