• Title/Summary/Keyword: 한국 지형학회

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A Study on Disaster Recognition and Feasibility of Disaster Prevention Based on Place Names (지명을 통해 본 재해인식 및 방재 가능성 탐색)

  • Kim, Sun-Hee;Park, Kyeong
    • Journal of the Korean association of regional geographers
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    • v.16 no.5
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    • pp.457-473
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    • 2010
  • Patterns and regional distribution of disaster-related place names have been analyzed to confirm the recognition and probability of disaster and to explore the possibility of disaster prevention measures. 106 terms and 37,901 place names related to disaster and prevention measures have been collected from the Korean gazetteers "Hanguk Jimyeong Chongnam". Based on this, some conclusions have been drawn: firstly, place names related to the geomorphic processes and prevention measures are more common than any other disasters; secondly, place names related to heavy rain, flooding and drowning are most common. Analysis of the regional distribution pattern shows that disaster-related place names are most common in Jeolla and Gyeongsang Provinces and general place names reflecting environmental concern such as water, sand, plain, rain and dam are distributed evenly throughout the whole country; howe, r, place names such as dumbeong, gureong, yeoul, tan(灘), bangjuk, je(堤), and ji(池) are restricted to the specific region, which shows that place names reflects the locational and toprn sucic ainuations. Case st, anindicates that prevention measures should be focused on tributaries and srill villeys conaid ring that disasters originated from the combination of weather and landform conditions are most common throughout the whole country.

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The Geomorphic Changes of Sand-Beach Coasts by Human Impact in Byeonsan Peninsula, Southwest Korea (인간간섭에 따른 변산반도 사빈해안의 지형변화)

  • CHOI, Hoon;LEE, Min-Boo
    • Journal of The Geomorphological Association of Korea
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    • v.19 no.3
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    • pp.83-96
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    • 2012
  • The origins of beaches at Byeonsan Peninsular, as a pocket type, are classified to a sand barrier type and wave-cut type. The beaches had developed by the deposition of the silt and clay layers on the 10m height from sea level in the inner bay during climax era of postglacial transgression. At that time, some sands had blown toward the inland hills to form aeolian deposits. After postglacial sea-level stabilization, sometimes, there has been the negative budget of beach materials. Recently, beaches have been transformed by human impact such as construction of Saemangeum sea-wall, especially in the Byeonsan and Gosapo beaches being close to the sea-wall. So the speed of tidal currents become slower and comparatively depositoinal activity stronger. And the level of chemical weathering has been higher. In Byeonsan beach, the ratio of coarse sand decreased with higher ratio of finer materials and by beach erosion dissected runnels developed, running parallel to the coastline. In Gosapo beach, supply of suspended materials are increased through the Garyeok drainage gate, the sands tend to be finer.

Applied Geomorphology in Korea (한국의 응용지형학)

  • KIM, Chang-Hwan
    • Journal of The Geomorphological Association of Korea
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    • v.18 no.3
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    • pp.107-119
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    • 2011
  • Applied Geomorphology can be addressed quickly social needs. Therefore, it should be a lot of research on the applied geomorphology in order to have a distinct academic nature of the geomorphology. From this perspective, From this perspective, I think very important that it studied up to now look at the performance of the applied geomorphology. The proportion of applied geomorphology is only 0.6 percent of published papers in all areas of geography and 18.3 percent of geomorphology. Sharp increase in this proportion since the 2000s that, it is not nothing to do with the demands of modern society. The tourism sector in the topic of the applied geomorphology were most common, related papers with environmental conservation and disaster were followed. Nowadays, all academic studies must meet the needs of the social. Therefore, studies for the applied geomorphology should be extended in the future to grow number of researchers and expand research-based of the geomorphology.

Effects of Fluvial movement Decrease on Channel Morphology Change : a Case of the Jiseok River (하도의 이동성 감소에 따른 하천 지형의 변화 연구 : 지석천을 대상으로)

  • Ock, Gi-Young;Lee, Sam-Hee
    • Proceedings of the Korea Water Resources Association Conference
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    • 2006.05a
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    • pp.1042-1046
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    • 2006
  • 지석천 중하류는 영산강의 제1지류로서 전라남도의 화순을 가로지르는 국가하천 구간이다. 이 구간(대초천 합류점${\sim}$화순천합류점)의 하천경사는 약 1/640 이며, 하천주변에는 충적평야가 발달해 있다. 이와 같은 하도의 하상재료는 자갈/모래의 혼합사가 분포하는 것이 일반적인 특성이지만, 2005년 현재 선격자법에 의한 조사결과 평균입경$(d_{50})$은 8cm 전후의 작은호박돌/매우굵은자갈로 구성되어 있는 특이성을 보이고 있다. 문헌에 따르면 1978년 하상재료의 평균입경은 $1.59{\sim}2.23cm$로서 20여년동안 하상재료는 매우 조립화되고, 하상은 장갑화되었음을 확인할 수 있었다. 이러한 현상은 지석천 유역의 농업화와 도시화에 따른 하도정비 및 유황의 변화에 기인한 것으로 여겨진다. 본 연구에서는 항공사진 분석 및 현장조사를 통하여 하천지형학적 변화와 사주의 식생피복상태의 변화에 대한 분석을 수행하여 하도특성변화를 정량적으로 분석하고자 하였다. 결과적으로 지석천에서 하천의 역동성이 크게 감소함으로써 다지형(망상) 하도로 하도선형이 변화하고, 식생사주의 면적이 확대되었으며, 하상저하가 발생함을 확인하였다.

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Numerical Analysis of Wind Driven Current and Mesoscale Air Flow in Coastal Region with Land Topography (육상지형을 고려한 연안해역에서의 취송류에 관한 수치해석)

  • Lee, Seong-Dae;Kim, In-Ho;Hong, Chang-Bae
    • Proceedings of the Korea Water Resources Association Conference
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    • 2006.05a
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    • pp.1925-1930
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    • 2006
  • A quasi depth-varying mathematical model for wind-generated circulation in coastal areas, expressed in terms of the depth-averaged horizontal velocity components and free surface elevation was validated and used to understand the diurnal circulation process. The wind velocity is considered as a dominant factor for driving the wind generated current. In this paper, three dimensional numerical experiments that included the land topography were used to investigate the mesoscale air flow over the coastal regions. The surface temperature of the inland was determined through the surface heat budget consideration with inclusion of a layer of vegetation. A series of numerical experiments were then carried out to investigate the diurnal response of the air flow and wind-generated circulation to various types of surface inhomogeneities.

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