• 한국환경생태학회지
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• 제24권2호
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• pp.130-138
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• 2010

본 연구는 태안해안국립공원과 순천만 거주자의 인식조사에 기초하여 연안습지의 현황을 평가하고 연안습지의 보전과 지속가능한 이용에 관한 기본틀 수립 및 향후 관리방안 설정을 위한 기초자료 수집의 목적으로 진행되었다. 이를 위해 주민 직접기입 방식의 설문조사를 실시하였고 총 98매(태안해안국립공원: 38매, 순천만: 60매)의 설문지가 유효 표본으로 이용되었다. 주민의 만족도 조사에서 자연환경은 순천만과 태안해안국립공원이 유사하게 나타나 두 지역간 만족도 차이는 없다고 할 수 있다. 그리고 생활환경도 비슷하게 나타났다. 뿐만 아니라 전체 환경에 대한 만족도는 순천만과 태안해안국립공원이 비슷하게 나타났다. 두 지역 주민들은 사회 경제환경에는 만족하지 않은 것으로 나타났다. 연안습지에 대한 중요도를 묻는 질문에 두 지역 모두 중요하다고 답한 사람이 매우 높게 나타났다. 습지의 개발과 보전에 대하여 어떻게 인식하는지에 대한 결과로는 두 지역 모두 보전과 완전보전을 원하는 사람이 현재 습지나 자연환경의 보전이 잘되고 있는 것처럼 보전을 더욱 원한다는 것을 알 수 있다. 따라서 앞으로 연안습지의 개발과 보전에 대한 이상적인 관리방안을 제시할 때, 주변 환경이 양호한 순천만과 같은 경우에는 현재 상태를 유지하면서 최소한의 개발을 유도하여야 하며, 태안해안국립공원과 같이 양호한 자연환경과 개발 잠재력이 있는 공존지역은 습지생태계를 보전하면서 자연과 어우러지는 개발 즉, 지속가능한 개발과 생태관광지로 유도되어야 할 것이다.

• 한국환경과학회지
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• 제19권12호
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• pp.1421-1430
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• 2010

Polycyclic aromatic hydrocarbons (PAHs) were investigated in seawater and marine sediment from Anmyundo coastal area after oil spill. The concentrations of total PAHs in surface and bottom of seawater at August were 31.1 to 142.6 ng/L and 5.9 to 50.9 ng/L in August and November, respectively. The concentrations of PAHs in sediment were 21.0 to 102.9 ng/g D.W. and 32.3 to 57.4 ng/g D.W. in August and November, respectively. PAHs concentrations in seawater and sediment in August were higher than those in November about 2.5 and 1.4 times, respectively. Diagnostic ratio (PhA/AnT and FluA/Pyr) were investigated to identify source of PAHs in seawater and sediment. The PAHs in seawater originated from pyrolytic source and those in sediment originated from pyrolytic and petrogenic source. The glass, wood and coal origin was higher than petroleum origin on the combustion origin of PAHs in seawater and sediment. The seawater of Anmyundo costal area recovered from oil spill, but the sediments of that were weakly influenced by oil spill until now. Because this area is developed many fishing grounds, demanded Long Term Environmental Monitoring Program (LTEMP). The concentrations of PAHs on depth of sediments were investigated at station 8 and 10. The concentrations of PAHs were decreased with increasing depth.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2005년도 춘계학술대회 논문집
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• pp.253-260
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• 2005

최근 한반도를 내습하는 폭풍의 규모가 커지고 이에 대한 피해도 증가하고 있는 실정이어서 외해로 개방된 도서해역이나 연안역에 대한 재해방지를 위한 설계파라메터의 재산정이 필요한 상황이다. 기존의 설계 파라메타는 심해 설계파랑이나 바람자료만을 입력값으로 한 규칙파 모형으로 계산되어, 바람에 의한 파의 성장, 파랑 상호간의 간섭 및 에너지 재분포 등을 다룰 수 없는 문제점에 노출되어 있었다. 따라서, 본 연구에서는 이러한 파랑과 바람에 의한 파의 발달 및 상호간섭을 고려할 수 있는 정상상태 스펙트럼 모델의 하나인 SWAn(Simulation WAves Nearshore)모형을 이용하여 파랑변형 수치모의를 수행하였다. 연구 대상영역에 대한 기존의 설계 파라메타의 비교 결과, 기존 결과와 큰 차이를 나타내고 있으며, 특히, 이들 해역에서 도출된 결과는 장래 항만설계 및 방재 분야에서 널리 이용될 것으로 판단된다.

• 한국해안·해양공학회논문집
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• 제22권2호
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• pp.95-100
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• 2010

본 연구에서는 구조물 건설 및 외부로부터 오염물질이 유입될 경우, 자연정화가 어려운 폐쇄성해역에서 실시되고 있는 대규모 매립이 수질 및 해양생태계에 미치는 영향을 파악하였다. 해양환경변화를 예측하기 위해 3차원 해수유동모델과 물질순환모델을 이용하여 현재의 해양환경을 재현하였으며, 매립 후의 수질 및 생태계 변화를 각각 검토하여 대규모 매립에 의한 환경변화를 평가하였다. 아울러, 매립에 의한 환경영향을 완화시킬 수 있는 방안을 제시하기 위해 수치모의결과로부터 얻어진 환경부하량과 기존의 조사결과를 이용하여 환경변화를 최소화할 수 있는 미티게이션방안으로서 인공갯벌, 인공해빈과 친수호안을 제안하였다.

• 한국해양공학회지
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• 제33권6호
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• pp.597-606
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• 2019

Due to climate change, coastal areas are being flooded with torrential rain, typhoons, and tsunamis. In addition, non-point source pollutants (NPSs) that accumulated on the ground, streets, and buildings during the dry season are washed off by rain and stormwater runoff, which adds to the damage associated with environmental pollution, e.g., pollution that makes its way into the ocean. Recently, low impact development (LID) has been considered as a means of controlling water circulation and NPSs. In the coastal area, permeable blocks have been constructed mainly to reduce the flood damage caused by waves. Some important design factors that must be considered to ensure long-term performance are the permeability coefficient, clogging, and the efficiency of the removal of total suspended solids (TSS), but currently there are no standardized design criteria or testing techniques that are used worldwide. Herein, we analyzed the permeability coefficient and the TSS removal efficiency tendency according to the permeability area ratio with an easily-detachable, permeable block filled with calcinated yellow soils as the filter media. Our lab-scale tests indicated that, when the permeability area ratio was 25%, the reduction of the permeability coefficient after clogged was 11%, which was a significant decrease compared to other cases. Permeability persistence increased when the permeability area ratio increased from 50% to 75%. The TSS removal efficiency decreased as the permeability area ratio increased. Our pilot-scale test indicated that the TSS removal efficiency was more than 80% higher in all cases. We also found that the permeability persistence was excellent as the permeability area ratio increased, and, in actual construction, it is effective to set 5.3% of the total area as permeable area in terms of permeability and economic feasibility.

• International Journal of Ocean System Engineering
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• 제1권4호
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• pp.185-191
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• 2011

This research was described the prevention of coastal topographical change and sediment diffusive concentration incoming from small estuary after construction jetties. This structure is constructed to decrease sediment deposition incoming from the upstream river due to the urbanization and industrial development and to minimize effects on the coastal ecosystem. The physical modeling and numerical modeling for waves were conducted to analyze the configuration of Imrang sand beach deformation without and with construction of jetty. The specification of the installed jetty, which is able to control sedimentation concentration was decided based on the prediction of the Imrang beach area changes by space and time. As a result, the jetties constructed in the estuary retarded the rate of sand sediment, so that the effect area of sand sedimentation was obviously decreased. In addition, the measured field data indicated that the sediment deposition inside of dikes could be controlled and the right side area of jetties could be preserved without sediment deposition.

• 환경위생공학
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• 제21권4호
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• pp.61-76
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• 2006

A Line Density algorithm was developed to quantify the sea surface temperature distribution using NOAA Sea Surface Temperature(SST) data and Geographic Information Systems(GIS), In addition, a GIS based automation model was designed to extract the Line Density Indices were determined by applying K-means Cluster. SST data in terms of March to May obtained on the coastal area of the Uljin from 2001 to 2004 in spring were used to make two data sets of average sea water temperature map in terms of year as well as month. From the result it was formed that water temperature gradient in April was the strongest among the other months, In particular very strog formation of oceanic front as well as temperature gradients were observed in front of the coastal area around Wonduk and Jukbyeon countries. Because those coastal area is a confront zone of two cold and a warm. It is expected that the development of a Line Density Algorithm would contribute to quantify of the SST for the research of Sea Surface Front(SSF) related to marine life management and the sea environmental conservation.

• 한국측량학회지
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• 제34권2호
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• pp.143-151
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• 2016

The distribution of seabed rock in the coastal area is relevant to navigation safety and development of ocean resources where it is an essential hydrographic measurement. Currently, the distribution of seabed rock relies on interpretations of water depth data or point based bottom materials survey methods, which have low efficiency. This study uses the airborne bathymetric Lidar data and the hyperspectral image to detect seabed rock in the coastal area of the East Sea. Airborne bathymetric Lidar data detected seabed rocks with texture information that provided 88% accuracy and 24% commission error. Using the airborne hyperspectral image, a classification result of rock and sand gave 79% accuracy, 11% commission error and 7% omission error. The texture data and hyperspectral image were fused to overcome the limitations of individual data. The classification result using fused data showed an improved result with 96% accuracy, 6% commission error and 1% omission error.

• 한국항해항만학회지
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• 제37권6호
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• pp.567-574
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• 2013

Although Korea coastal area has the increasing potential marine accident due to frequent ship's encounter, increased vessel traffic and large vessel, there is no specific model to evaluate the navigating vessel's risk considering the domestic traffic situation. The maritime transport environmental assessment is necessary due to the amended maritime traffic law. However, marine safety diagnosis is now carried out by foreign model. In this paper, therefore, we suggest a domestic traffic model reflecting the characteristics of korea coastal area and navigator's risk as we named PARK(Potential Assessment of Risk) model. We can evaluate the subjective risk by establishing the model and model output into maritime risk exposure system. To evaluate this model's effectiveness, we used ship handling simulation and applied, analyzed collision accident which occurred in korea coastal area. And also, we applied integrated to an ECDIS program for monitoring traffic risk of vessels with real time based AIS data and apply to evaluate traffic risk in busan harbor waterway. As a result, we could evaluate busan harbor waterway risk effectively.

• 대한지리학회지
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• 제44권4호
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• pp.481-496
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• 2009

해안은 다양한 지형 프로세스와 역사, 문화가 어우러져 지역에 따라 독특한 문화경관을 나타내고 있다. 미국 동부 해안을 따라 발달된 사주 섬은 문화경관의 지역적 차이를 잘 보여주고 있다. 사주 섬의 토지이용을 살펴보면, 1970년대 초에 조지아에서 5%, 노스캐롤라이나에서 14%, 그리고 뉴저지에서 47%가 도시적으로 이용되었다. 19세기 중반부터 개발되기 시작한 뉴저지의 해안지역에서는 성장억제책이 부족했고, 입법 활동에서 미래 해안환경에 대한 통찰력을 결여했기 때문에 많은 지역에서 자연 해빈이 대부분 사라지는 뉴저지제이션 현상이 발생했다. 노스캐롤라이나는 해안관리와 입법과정에서 탁월한 지혜를 보여 해안의 자연성을 회복해나가고 있다. 조지아 해안은 남북전쟁 이후 독특한 토지이용으로 자연성을 회복하였고, 1970년 이후 대부분의 사주 섬이 학술기관이나 환경보호 관련 기관의 관리로 이전되어 16개 가운데 9개의 사주 섬은 야생상태를 유지하고 있다.