• 제목/요약/키워드: South coast

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서해안 및 남해안의 해안단구 연구와 융기율 (Study on Coastal Terrace and Uplift Rate in the West and South Coasts of South Korea)

  • 박충선;김유홍;남욱현;이광률
    • 한국지형학회지
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    • 제25권4호
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    • pp.49-62
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    • 2018
  • This study tries to reveal uplift rates inferred from relative and absolute ages on coastal terrace in the West and South Coasts of South Korea. Uplift rate from relative ages on Pleistocene coastal terrace in the West Coast rangesfrom approximately 0.059 to 0.282 m/ky, while a range of approximately 0.020~0.385 m/ky is calculated from the South Coast, suggesting that the South Coast shows higher rate than the West Coast. Based on absolute ages on coastal terrace during MIS 5 in the South Coast, on the other hand, the uplift rates 1 and 4 have ranges of approximately 0.042~0.062 m/ky and 0.051~0.087 m/ky, respectively, indicating that uplift rate in the South Coast is one-third to one-fourth to that in the East Coast. No research on absolute ages in West Coast terrace and lack of relative and absolute ages in the West and South Coasts are considered as the limit in this study.

한국 연안산 지충이(Sargassum thunbergii)의 생태 (Ecology of Sargassum thunbergii along the Korean Coast)

  • 서지오;박형섭;정원기;김남길
    • 한국수산과학회지
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    • 제56권5호
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    • pp.684-690
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    • 2023
  • This study was conducted bimonthly from February to December 2021 to reveal the ecology of Sargassum thunbergii in the intertidal zone along the coasts of Korea. Separate surveys on the period of embryo formation were conducted from February 2021 to December 2022. The growth of S. thunbergii began to increase in February, reached a maximum in June, and was at a minimum in October. Air vesicles were formed from February to June, April to August, and February to August on the east, west, and south coasts, respectively. Receptacles were observed from April to June on the east coast, but from April to August on the west and south coasts. The earliest release of embryos was observed in late May 2022 on the south coast, followed by early June on the east and west coasts. The average size of leaves, stems, and air vesicles was maximum on the east coast and minimum on the west coast, whereas leaf and internode intervals were maximum on the west coast and minimum on the east coast. Plant length, biomass, and the number of branches showed maximum values in the south coast and minimum values in the east coast.

한반도 남부 해안의 융기율 비교 (Comparison of Uplift Rate in the Southern Coast of the Korean Peninsula)

  • 이광률;박충선
    • 한국지형학회지
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    • 제26권2호
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    • pp.55-67
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    • 2019
  • This study tries to reveal and compare uplift rates in the southern coast of the Korean Peninsula, based on absolute ages from coastal terrace on the coast. The uplift rate in the East Coast from previous study ranges from 0.258 to 0.357 m/ka with a median rate of 0.262 m/ka and shows an increase trend from north to south. Median uplift rate of 0.082 m/ka with minimum and maximum rates of 0.053 m/ka and 0.127 m/ka, respectively, is calculated in the South Coast from previous and this studies. The uplift rate in the West Coast from 3 absolute ages in this study is 0.082~0.112 m/ka with a median rate of 0.090 m/ka. Based on these uplift rates in the southern coast of the Korean Peninsula, it can be concluded that since MIS 5, the East Coast has experienced 3 to 4 times faster uplift rate than the West and South Coasts. However, this study suggests that more discussion on whether these uplift rates are long-term tectonic movement associated with tilted warping movement since the Tertiary or short-term tectonic movement associated with isostatic rebound due to sea level change since the Last Interglacial is needed.

HEBEI SPIRIT호 기름유출사고에 의한 서남해안 유입 타르볼의 방제 (Response of Tarball entering the South-Western Sea by HEBEI SPIRIT Oil Spill)

  • 오정우;조현진;김두호;나은영;장명길;황성훈;신재길
    • 해양환경안전학회:학술대회논문집
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    • 해양환경안전학회 2008년도 춘계학술발표회
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    • pp.121-124
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    • 2008
  • 2007년 12월 7일 HEBEI SPIRIT호 기름유출 사고로 인해 형성된 타르볼이 12월 27일부터 서남해역에 유입되기 시작하였다. 유입된 타르볼은 해경을 중심으로 한 방제세력에 의해 해상 및 해안에서 제거되었으며, 해상 및 해안에 있어서 각각 0.345톤 및 1,739톤의 타르볼이 수거되었다. 서남해역 타르볼 방제에 동원된 방제인력은 약 2만 5천명의 자원봉사자를 포함하여 총 9만 7천명으로 파악되고 있다. 본 연구에서는 뜰채나 그물 등 서남해권내의 해상과 해안에 유입된 타르볼의 방제에 실제적으로 사용되었던 방제방법들을 소개하였다.

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우리나라 동해안 해안선의 장기적 변화 2 -남부 동해안 (Long-term Changes of Shoreline at the East Coast in South Korea 2 - South East Coast)

  • 김대식
    • 한국지형학회지
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    • 제20권3호
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    • pp.27-39
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    • 2013
  • 본 논문은 남부 동해안의 5개 지역을 대상으로 최근 약 30년 동안 해안선의 장기적인 변화 경향을 파악하고, 중부 및 남부 동해안 연구를 종합하여, 동해안 해안선의 장기적인 변화 경향과 그 요인을 분석하였다. DSAS를 이용하여 해안선 변화량을 계산한 결과, 망양정 지역은 평균 28.9m, 조사 지역은 평균 6.4m 해안선이 후퇴하였고, 고래불 지역은 평균 25.0m, 대진 지역은 평균 10.6m, 봉길 지역은 평균 18.8m 해안선이 전진하였다. 동해안의 해안선 변화 경향을 종합하면, 1) 모든 지역 내에서 해안선은 전진과 후퇴 구역이 반복적으로 나타나고 있다. 2) 최근에 건설되거나 증축된 방파제와 접한 남쪽 구역에서는 해안선이 전진하였는데, 이는 북류하는 연안류의 영향으로 판단된다. 3) 해수욕장으로 이용되는 구역에서는 상대적으로 큰 해안선 후퇴 경향을 보인다. 4) 하천의 하구에서는 하천 상류 지역에서의 퇴적물 공급량 변화에 따라 해안선의 전진 및 후퇴가 다양하게 나타난다.

유한변형률 압밀이론에 의한 남해안준설토의 압밀특성에 관한 연구 (The Study on the Consolidation Characteristics of South Coast Spoil Reclaimed Ground by Finite Strain Consolidation Theory)

  • 송명규;임종철;권정근;주인곤
    • 한국지반공학회:학술대회논문집
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    • 한국지반공학회 2009년도 세계 도시지반공학 심포지엄
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    • pp.1170-1180
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    • 2009
  • Recently this country has carried out the coast reclamation centering on the west and south coast for effective practical use of a country, considering purchase of materials and environmental problem, most reclaiming work is processing to spoil reclamation which is easy to secure the amount of materials. In case of weak ground that is formed by spoil reclamation like this, initial moisture content is high, as slurry state that is rarely revealed ground strength, compressibility and water permeability have been shown nonlinear change by compaction progress. Analysis of weak ground is unreasonable because the existing Terzaghi compaction theory analyzes compaction fixed number to regular invariable number for prediction of compaction state. This study computes the relation with void ratio-effective pressure and void ratio-finite transformation which is the most basic matter to predict finite strain compaction state of the south coast spoil, and analyze the basic feature to predict compaction feature of the south coast spoil reclaimed ground.

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한국연안에 있어서 기상 교란에 의한 해면변화 I. 태풍 빌리호(1970년)와 남 서해안의 이상고조현상 (On the Variation of Sea Level Due to Meteorological Disturbances on the Coast of Korea. I. Storm Surges Caused by Typhoon Billie, 1970, on the West and South Coasts of Korea)

  • 황진풍
    • 한국해양학회지
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    • 제6권2호
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    • pp.92-98
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    • 1971
  • 본고는 지난 12년동안 한국연안에 내습한 태풍 및 각 검조소에 출현한 매년의 최고 이상고조와 1970.8.29∼9.2에 있었던 태풍 빌리호 내습시 남 서해안의 각 검조소에서 얻은 자료에 의하여 해면변화에 대한 사례조사를 시도한 것이다. 한국연안은 매년 빈번한 기상교란 (태풍, 저기압등) 에 의하여 이상고조 또는 기상해일현상이 발생, 항만이나 연안지대에서는 적지 않은 피해를 받고 있으나 이에 관한 조사는 전혀 없었으며, 이후 연안지대의 고도이용이나 연안방재를 위하여 먼저 정확한 사례조사가 필요하다고 본다.

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Key Factors Affecting Sustainable Tourism in the Region of South Central Coast of Vietnam

  • NGUYEN, Cong De;NGO, Thang Loi;DO, Ngoc My;NGUYEN, Ngoc Tien
    • The Journal of Asian Finance, Economics and Business
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    • 제7권12호
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    • pp.977-993
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    • 2020
  • Sustainable tourism is the development of tourism activities to meet the current needs of tourists and indigenous peoples while paying attention to the conservation and improvement of resources for the development of tourism activities in the future (World Tourism Organization, 2013). With the aim of identifying factors affecting the development of sustainable tourism in the South Central Coast of Vietnam, the study conducted a typical survey of 160 tourism managers and 240 tourists traveling or have participated in tourism activities of 8 provinces in the South Central Coast of Vietnam, and used the exploratory factor analysis (EFA) analysis and regression analysis for analyzing the data. The research results show that 11 factors impact the development of sustainable tourism in the South Central Coast namely Institutions and policies for tourism development, Infrastructure, Tourism resources, Human resources for tourism, Diversity of tourism services, Relevant support services, Activities of association and cooperation for tourism development, Tourism promotion and encouragement, Tourists' satisfaction, Local community, and Other factors. At the same time, among the above factors, the factors Institutions and policies for tourism development, Infrastructure, Tourism resources, and Local community strongly impact the development of sustainable tourism in the region.

Analysis of Surface Water Temperature Fluctuation and Empirical Orthogonal Function in Cheonsu Bay, Korea

  • Hyo-Sang Choo;Jin-Young Lee;Kyeung-Ho Han;Dong-Sun Kim
    • 해양환경안전학회지
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    • 제29권3호
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    • pp.255-269
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    • 2023
  • Surface water temperature of a bay (from the south to the north) increases in spring and summer, but decreases in autumn and winter. Due to shallow water depth, freshwater outflow, and weak current, the water temperature in the central to northern part of the bay is greatly affected by the land coast and air temperature, with large fluctuations. Water temperature variations are large in the north-east coast of the bay, but small in the south-west coast. The difference between water temperature and air temperature is greater in winter and in the south-central part of the bay than that in the north to the eastern coast of the bay where sea dykes are located. As the bay goes from south to north, the range of water temperature fluctuation and the phase show increases. When fresh water is released from the sea dike, the surrounding water temperature decreases and then rises, or rises and then falls. The first mode of empirical orthogonal function (EOF) represents seasonal variation of water temperature. The second mode represents the variability of water temperature gradient in east-west and north-south directions of the bay. In the first mode, the maximum and the minimum are shown in autumn and summer, respectively, consistent with seasonal distribution of surface water temperature variance. In the second mode, phases of the coast of Seosan~Boryeong and the east coast of Anmyeon Island are opposite to each other, bordering the center of the deep bay. Periodic fluctuation of the first mode time coefficient dominates in the one-day and half-day cycle. Its daily fluctuation pattern is similar to air temperature variation. Sea conditions and topographical characteristics excluding air temperature are factors contributing to the variation of the second mode time coefficient.