• 한국지진공학회논문집
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• 제20권3호
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• pp.171-180
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• 2016

Earthquake event keeps increasing every year, and the recent cases of earthquake hazards invoke the necessity of seismic study in Korea, as geotechnical earthquake hazards, such as strong ground motion, liquefaction and landslides, are a significant threat to structures in industrial hub areas including coastal facilities. In this study, systemized framework of integrated assessment of earthquake-induced geotechnical hazard was established using advanced geospatial database. And a visible simulation of the framework was specifically conducted at two coastal facility areas in Incheon. First, the geospatial-grid information in the 3D domain were constructed with geostatistical interpolation method composed of multiple geospatial coverage mapping and 3D integration of geo-layer construction considering spatial outliers and geotechnical uncertainty. Second, the behavior of site-specific seismic responses were assessed by incorporating the depth to bedrock, mean shear wave velocity of the upper 30 m, and characteristic site period based on the geospatial-grid. Third, the normalized correlations between rock-outcrop accelerations and the maximum accelerations of each grid were determined considering the site-specific seismic response characteristics. Fourth, the potential damage due to liquefaction was estimated by combining the geospatial-grid and accelerations correlation grid based on the simplified liquefaction potential index evaluation method.

• 한국산학기술학회논문지
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• 제14권1호
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• pp.478-484
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• 2013

최근 해양관련 레저 활동 및 관광의 활성화로 연안역에서의 안전사고 위험은 더욱 증가하고 있다. 그러나 현재 안전사고를 방지하기 위한 안전시설의 기술적 측면이나 관리적 측면에 대한 규정이 부재하여 연안역 안전사고 대책이 안전사고의 증가속도에 적절하게 대응하지 못하고 있는 실정이다. 연안역의 지리적, 환경적 조건은 육역과 해역의 특성이 혼재되어있으며 또한, 다양한 많은 활동(어업, 항만업, 관광, 레저)이 존재하므로 안전사고를 방지하기 위한 안전시설을 설치하는 경우에는 육역 및 해역의 특성과 어부/항만노동자/관광객/레저활동자들의 행동특성이 적절히 고려되어야 한다. 본 논문에서는 국내 및 국외(홍콩, 마카오) 실태조사를 실시하였으며, 이로부터 국내 연안역의 안전시설에 대한 현안 문제점을 제시하였다. 또한 안전시설에 대한 개선방향을 제안하였다.

• 수산해양교육연구
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• 제22권2호
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• pp.180-194
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• 2010

Coastal sand dunes are dynamic and fragile buffer zones of sand and vegetation where the following three characteristics can be found: large quantities of sand, persistent wind capable of moving sand, and suitable locations for sand to accumulate. The functional properties of coastal sand dunes include the roles in sand storage, underground freshwater storage, coastal defense, and ecological environment space, among others. Recently, however, the integrity of coastal dune systems has been threatened by development, including sand extraction for the construction industry, military usage, conversion to golf courses, the building of seawalls and breakwaters, and recreational facility development. In this paper, we examined the development mechanisms and structural/format types of coastal sand dunes, as well as their functions and value from the perspective of coastal engineering based on reviews of previous researches and a case study of a small coastal sand dune in the Nakdong river estuary. Existing data indicate that there are a total of 133 coastal sand dunes in South Korea, 43 distributed on the East Sea coast (32 in the Gangwon area, and 11 in Gyeongsangbuk-do), 60 on the West Sea coast (4 in Incheon and Gyeonggi-do, 42 in Ghungcheongnam-do, 9 in Jellabuk-do, and 5 in Jellanam-do), and 30 on the South Sea coast (16 in Jellanam-do, 2 in Gyeongsangnam-do, and 12 in Jeju).

• 한국지리정보학회지
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• 제17권4호
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• pp.10-27
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• 2014

HAZUS-MH는 지진, 홍수 및 허리케인의 세 가지 다중 재해현상에 대한 잠정적 손실을 추정하기 위한 GIS 기반의 컴퓨터 프로그램이다. 지진 재난에 대해서는 HAZUS에 설정한 가상이나 실제 지진 특성에 따라 지진동의 세기가 평가되고 이에 따라 손실을 계산하게 된다. 본 연구에서는 해안 플랜트시설 영역의 향후 지진에 대한 대비의 일환으로 HAZUS를 활용하였다. 대상 시설 영역의 특성 평가를 위해 기존 지반조사 보고서를 토대로 지반특성 자료들을 취합하였다. 또한, 시설구조물들의 재료 및 구조 특성에 따라서도 분류하였다. 연구 영역은 부지 조성 및 시설 분포 상황을 고려하여 17개 블록으로 나누고 지반 조건을 내진설계기준의 부지분류 체계에 따라 구분하였다. 뿐만 아니라, 수치 모델링을 통해 주요 시설물들의 지진취약도 곡선들을 도출하고 HAZUS 데이터베이스에 적용하였다. 이 연구 영역에 대한 HAZUS 활용 추정 결과는 부지 조건 및 구조물 종류에 따라 다양한 지진 피해와 손실 정도를 보였다. 본 사례 연구를 통해 해안시설 영역의 지진 피해 평가를 위한 HAZUS의 적용 가능성을 확인하였다.

• 한국해안해양공학회:학술대회논문집
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• 한국해안해양공학회 1993년도 정기학술강연회 발표논문 초록집
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• pp.9-13
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• 1993

Modernization of a port requires a considerable port facility expansion through grading up the cargo handling efficiency, increasing water depth of channels and basins to accomodate Large ships, etc. In many ports in the world, the needs of bigger ship calls in excess of conventional capacity of channels and basins demand for capital dredging as well as maintenance dredging resulting from siltation, and those activities are incurring heavy annual expenditure of the ports. (omitted)

• 한국습지학회지
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• 제3권2호
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• pp.107-118
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• 2001

The aim of this paper is to grasp eutrophication aspects in Namhae coastal seas, statistically analyzing existing data for their surface seawater and bottom mud. A pollution level(ignition loess) of bottom mud, on the whole, trended to increase as moving the coastal sea around Mokpo-Wando toward the east(Gyeongnam Namhae coastal seas). Especially, the pollution level(ignition loss=10.5%) of bottom mud for the coastal sea around Tongyeong-Keoje-Gosung was similar to that(10.3%) for the coastal sea around Masan-Jinhae, whose coastal marine pollution was the severest in Namhae coastal seas. It indicates that large amounts of pollutant from aqualculture facilities have been, thus far, accumulated on the coastal sea around Tongyeong-Keoje-Gosung, considering there was no significant inflow of sewage and industrial wastewater into this coastal sea. A COD, T-N, and T-P level of surface seawater, on the whole trended to increase as moving the coastal sea around Mokpo-Wando toward the east(Gyeongnam Namhae coastal seas). A COD level appeared to be the second grade of coastal water quality over the entire year throughout all Namhae coastal seas A T-N level exceeded the third grade of coastal water quality throughout all Namhae coastal seas except the coastal sea around Mokpo-Wando. Especially, a T-N level exceeded as many as three and six times over the third grade of coastal water quality in the coastal sea around Tongyeong-Keoje-Gosung and Masan-Jinhae, respectively. A T-P level appeared to be the second grade of coastal water quality in the coastal sea around Mokpo-Wando and the third grade of coastal water quality in the coastal sea around Yosu-Narnhae and Tongyeong-Keoje-Gosung, while it exceeded as many as two times over the third grade of coastal water quality. A degree of eutrophication of the surface seawater was 1.5 in the coastal sea around Mokpo-Wando and 11.9 In the coastal sea around Tongyeong-Keoje-Gosung, gradually increasing as moving toward the east(Gyeongnam Narnhae coastal seas). It sharply increased to 146.1 in the coastal sea around Masan-Jinhae. Because the degree of eutrophication throughout all Namhae coastal seas exceeded 1, a red tide organism could pose a possibility of proliferation at any place of Namhae coastal seas if other requirements were satisfied. It indicates that a red tide may move to another place once a red tide breaks out at a place of Namhae coastal seas.

• 대한자원환경지질학회:학술대회논문집
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• 대한자원환경지질학회 2000년도 춘계 공동학술발표회
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• pp.119-120
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• 2000

• 건축역사연구
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• 제32권1호
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• pp.35-45
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• 2023

Bongsu(Beacon Fire Station) is a facility that sends signals with fire and smoke and has been used in Korea since the Three Kingdoms period. This facility was installed to know the north and south crises. This trend continues until the Joseon Dynasty, and it has been somewhat completed in the 17th century. In previous studies, beacon fire was identified mainly from the border area to Hanyang. Based on this, it was classified into Gyeongbongsu, Yeonbyeonbongsu, and Naejibongsu. However, it is difficult to define the characteristics of beacon fire in coastal areas only with this classification. In the case of beacon fire in island areas, there was a tendency to value communication connection within the region rather than connection with the capital. As a case analysis for this, an academic review was conducted with the cases of Ganghwa Island and Jeju Island. As a result, it was confirmed that the role and character of the beacon vary depending on the defense system and the physical distance from the land, even if it has the topographical commonality of the same island.

• 한국환경생태학회지
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• 제29권6호
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• pp.952-958
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• 2015

본 연구는 탐방객 인식에 기반한 보다 분석적인 접근의 국립공원 시설관리방안을 제시하고자 하였다. 덕유산국립공원과 태안해안국립공원 탐방객 대상 총 214매를 유효표본으로 기술분석과 중요도-성취도 분석 실시 결과 태안해안국립공원은 지속적 관리노력 필요 항목이 4개, 저우선순위 항목이 3개, 과잉 노력 지양항목이 2개로 평가되었다. 덕유산국립공원은 지속적 관리노력 필요 항목이 3개, 우선시정 필요 항목 1개, 저우선순위 항목이 4개로 나타났다. 관리상태에 대한 전반적인 만족도는 2개소 모두 긍정적이며 국립공원 이용에 대한 종합적인 만족도 또한 3점 이상으로 나타났으나 덕유산국립공원이 태안해안국립공원에 비해 두 분야 모두 더 높게 평가되었다. 태안해안국립공원은 세부 관리속성 모두에서 관리상의 미진한 점이 나타났다. 이는 산악형 국립공원과는 상이한 해상해안형 국립공원의 탐방특성에 기인한 결과로 보이며 국립공원 유형별로 상이한 이용특성의 분석에 기초한 시설관리가 탐방만족 제고를 위한 필수요건으로 판단된다.

• International Journal of Naval Architecture and Ocean Engineering
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• 제3권3호
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• pp.216-224
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• 2011

In This study develops a quasi-three dimensional numerical model of wave driven coastal currents with accounting the effects of the wave-current interaction and the surface rollers. In the wave model, the current effects on wave breaking and energy dissipation are taken into account as well as the wave diffraction effect. The surface roller associated with wave breaking was modeled based on a modification of the equations by Dally and Brown (1995) and Larson and Kraus (2002). Furthermore, the quasi-three dimensional model, which based on Navier-Stokes equations, was modified in association with the surface roller effect, and solved using frictional step method. The model was validated by data sets obtained during experiments on the Large Scale Sediment Transport Facility (LSTF) basin and the Hazaki Oceanographical Research Station (HORS). Then, a model test against detached breakwater was carried out to investigate the performance of the model around coastal structures. Finally, the model was applied to Akasaki port to verify the hydrodynamics around coastal structures. Good agreements between computations and measurements were obtained with regard to the cross-shore variation in waves and currents in nearshore and surf zone.