• Title/Summary/Keyword: 해안 사구

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충청남도의 해안사구

  • 강대균
    • Proceedings of the KGS Conference
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    • 2003.05a
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    • pp.51-55
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    • 2003
  • 해안사구는 사빈으로부터 모래를 공급받아 형성되는 지형이다. 사빈은 조차에 비해 파랑의 작용이 활발한 해안에 발달한다. 해안사구는 일반적으로 모래의 공급이 풍부하고 바람이 탁월한 해안에 광범하게 발달된다. 우리나라와 같은 온난ㆍ습윤한 지방의 해안사구는 대부분 직생으로 덮여 있다. 식생은 해안사구의 발달을 돕는다. 사빈과 해안사구는 해수욕장으로 이용되어 자원으로서의 가치가 높다. (중략)

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The Geomorphology and the Sediment Characteristics of Sagye Coastal Dune, Jeju Island, Korea (제주도 사계 해안사구의 지형과 퇴적물 특성)

  • Seo, Jong-Cheol;Sohn, Myung-Won
    • Journal of the Korean association of regional geographers
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    • v.12 no.6
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    • pp.631-644
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    • 2006
  • The study area is a pocket beach which consisted of sandy beach, dune, agricultural land and residential area etc. The coastal dune area is classified to foredune, dune plain, secondary (or back) dune. The foredune area is covered by herbaceous dune plants(ex. Carex kobomugi, Wedelia prostrata, etc.), whereas the dune plain area is covered by herbs and shrubs(Vitex rotundifolia). The most inner area, secondary dune, is planted by pine forest(Pinus thunbergii). The mean size of the beach and dune sediments ranges from 1.1 to $1.8{\Phi}$, which mean these values are higher than normal sediments. Sorting and Skewness is $0.6{\sim}-1.2{\Phi}$ and $-2.7{\sim}1.6{\Phi}$ respectively. We found that the soil formation process in the secondary dune area has been progressed rapidly from the analysis of fine grain content, organic matter content, and CEC.

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Morphological Changes of the Beach and Foredune by Sand Fences - A Case of Shindu Coastal Dune Area - (사구울타리 설치 후 해빈과 전사구의 지형 변화 - 신두리 해안사구를 사례로 -)

  • SEO, Jong Cheol
    • Journal of The Geomorphological Association of Korea
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    • v.17 no.1
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    • pp.85-93
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    • 2010
  • After the notorious Taean Oil spill in Dec. 2007, a series of sand fences made of fishing net were installed in front of foredune in Shindu dune area. This paper aims to understand the temporal and spatial characteristics of morphological changes of the beach and foredune. About 1m high sand accumulated around sand fences for the last 2 years. While a lot of sand deposited during the winter season (from autumn to spring), small amount of sand eroded and deposited during summer season (from spring to autumn) without big morphological changes. These results mean that sand fences help nature deposit sand near beach and foredune area.

The Origin of Coastal Dunesand in the Chungcheongnam-do (해안사구의 물질 구설과 플라이스토세층 - 충청남도의 해안을 중심으로 -)

  • 강대균
    • Journal of the Korean Geographical Society
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    • v.38 no.4
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    • pp.505-517
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    • 2003
  • The purpose of this paper is to examine the origin of materials of sanddune in the Chungcheongnamdo. The sands consist mainly of quartz with lesser amount of feldspar and other heavy minerals. With the exception of those from the granite, the sands have a very fine texture. Another characteristic of the sand grains is the low degrees of roundness and grading which indicates that the source areas of the material are not far from the accumulating field. The rivers and streams of this region are not effective in transporting sediments for the coastal dunes. It has been recognized that the beaches and sanddunes have recently been receded as a result of the decrease in materials and the devastating actions of the breakers. The degradation process occurs most actively when the spring tides attack the beaches and foredunes. There are strata with red tint along the coastal areas of the Chungcheongnamdo which trace their origin back to the Pleistocene. From the fact that they contain little or no gravels, the strata are believed to have been the sanddunes during the last interglacial period. This fossil dunes provide part of the materials for the development of the present-day sanddunes along the coastal areas of the region.

Analyzing Sand Transfer Path by Songdo Beach Using Time Series Analysis (시계열 분석을 통한 송도해안의 해안사구 이동경로 분석)

  • Han, Chung-Mok;Kim, Yong-Suk
    • The Journal of the Korea Contents Association
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    • v.9 no.8
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    • pp.384-391
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    • 2009
  • The coastline area, which was the important to decide the shape of the national land, has the characteristics of changing its shapes and features. We have some trouble to make the appropriate use-plan, because of the huge land to be reclaimed from the sea and developing large and small coast areas. Of them the coastal sand dune plays a definite primary role in the side of tourism and ecology. But there is not enough study for that. Busan Songdo coast is decided as an object of this study. We would analyze transfer path of the coastal sand dune through the time series analysis with RTK-GPS survey for many years. In case of Song do coast, the mean coastline length is approximately 620m, the area is approximately $31,846m^2$. Breakwaters are set up in right and left sides in Song do coast. it can make the sand dune be a minimum. So the coastal sand dune is steadily deposited with a certain beach nourishment of every year. As a result of 7 times survey, both sides of the coastal sand dune are eroded. It turns out it is going ahead over all as the center of the coastal sand dune is deposited.

An Assessment of the Conservation Status for Coastal Sand Dunes in Incheon: Focused on the Jung gu, Ongjin gun in Incheon (인천광역시 연안 해안사구 보전현황 평가 연구: 중구, 옹진군을 중심으로)

  • Park, KyoungMoon;Kim, SungWoo;An, TaeSun
    • Journal of the Korean Geographical Society
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    • v.51 no.3
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    • pp.345-365
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    • 2016
  • This paper is a research that investigated the distribution and status of coastal sand dunes spread along the shoreline of Ongjin-gun, Jung-gu in Incheon and evaluated their conservation status. In Incheon, the length of coastline along the West Sea shoreline is 1,053km. thus leading to an assumption that coastal sand dunes are dispersed their as many as other regional local government. However, there are no enough basic data on the distribution, characteristics, and the management status of other areas besides the 5 places on the list by the Ministry of Environment. Considering this fact, this paper additionally drew 21 coastal sand dunes in the shoreline of Incheon, including the 5 places on the list by the Ministry of Environment, through the standard of coastal sandhill selection. The additionally selected aimed to propose how to develop basic materials on the conservation status of coastal sandhills in Incheon through characteristic analysis by sandhill and qualitative evaluation.

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Development of Coastal Sanddunes at Kimnyong-Wolchung Beach in Jejudo (제주 김녕-월정 사구의 발달과정에 관하여)

  • Park, Kyeong;Son, Ill;Chang, Eun-Mi
    • Journal of the Korean association of regional geographers
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    • v.10 no.4
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    • pp.851-864
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    • 2004
  • A coastal dune field, located at Kimnyong-Wolchung beach in Jejudo, Korea, extends alongshore for about 4 km, with dunes extending inland about 6 km. Detailed geomorphological analysis of the area was carried out by using areal photography and Landsat images. Samples were collected across two transects, and physical and chemical properties are analyzed to detect the variation of both properties depending on distance form the beach. Paleosol layers found during the field trip suggest that dune emplacement is episodic. Radiocarbon dates from nearby Hyupjae beach indicate that dunes have been formed during the late Holocene by the disturbance of calcareous materials.

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Beach and Sanddune Development along the Coastline of the Chungcheong-Namdo Province (충청남도 해안에 발달한 해빈과 해안사구)

  • Kahng, Tay-Gyoon
    • Journal of the Korean earth science society
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    • v.24 no.6
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    • pp.568-577
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    • 2003
  • The purpose of this paper is to examine the geomorphic processes of beach and sanddune development in the Chungcheong-Namdo Province. The sands consist mainly of quartz and feldspar with lesser amounts of mica and other heavy minerals. With the exception of those from the granite, the sands have a very fine texture. Another characteristic of the sand grains is low degrees of roundness and grading indicating that source areas for the material were in the vicinity of the accumulating field. Over the years, the beaches have receded as a response to the decreasing amount of depositional materials. The driving force for the formation and transformation of coastal dunes in the study area is dominant winds from the center of the Siberian High. To some extent, the erosion of coastal dunes has been a global phenomenon. The degradation process occurred most actively when spring tides attacked beaches, berms, and foredunes. The relief and shape of present-day coastal dunes is determined initially by the Pleistocene strata underneath. From the fact that the strata contained traces of frozen structure, it can be inferred that sediment once experienced the process of soil formation.

The Viticetea rotundifoliae in South Korea and Japan (한국과 일본의 순비기나무군강)

  • Jung, Yong-Kyoo
    • The Korean Journal of Ecology
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    • v.23 no.5
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    • pp.383-389
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    • 2000
  • A comparative analysis on the Viticetea rotundifoliae (coastal dune shrub vegetation) in South Korea and Japan was carried out. 569 releves from the most typical and homogeneous stands of the coastal dunes in South Korea and Japan were used. This study was accomplished by using the syntaxa and hierarchical system of the Viticetea rotundifoliae in South Korea and Japan according to the Zurich-Montpellier School's method, and syntaxonomy, synecology, syndynamics and syngeography between two countries were also compared with. Coastal dune shrub vegetation in South Korea and Japan were defined to the Viticetea rotundifoliae representing southern type coastal shrub in Northeast Asia. Coastal dune shrub communities of the Viticetea rotundifoliae in South Korea and Japan are considerably corresponded between the two, and contain their own characteristic syntaxa. Coastal dune shrub communities of the Viticetea rotundifoliae in Japan showed much diversification in syntaxa and species composition than those in South Korea.

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Benefits of Camera Monitoring System in Studying on Coastal Dune Erosion by Typhoon (태풍으로 인한 해안사구 침식 연구에 대한 카메라 관측 시스템의 유용성)

  • Kim, Taerim;Kim, Dongsoo
    • Journal of The Geomorphological Association of Korea
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    • v.21 no.4
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    • pp.41-52
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    • 2014
  • Coastal dune, as one part of beach system, contributes for beach recovery as well as preventing beach erosion by exchanging sands between beach and dune. Due to high tidal range, the boundary of sand dunes on the west coast of Korean Peninsula is outside the high water line during spring tide and erosion also occurs in high waves during spring high tide. This paper investigates the erosion status of the dunes located in the JangHang beach by analyzing images from camera monitoring system, and tide and wave data observed adjacent to the study site during the passage of 4 typhoons in 2012. It also studies the benefits of camera monitoring images in investigating the dune erosion and analyzing coastal topographic changes.