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한국지형학회지 update

JOURNAL OF THE GEOMORPHOLOGICAL ASSOCIATION OF KOREA

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수록정보
수록범위 : 1권1호(1994)~28권4호(2021) |수록논문 수 : 809
한국지형학회지
28권4호(2021년 12월) 수록논문
최근 권호 논문
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KCI등재

1무인항공기를 활용한 금강 하도내의 퇴적지형 변화 특성 연구: 공주보 개방 전·후를 중심으로

저자 : 윤혜연 ( Yoon Hye-yeon ) , 윤광성 ( Yun Kwang-sung ) , 장동호 ( Jang Dong-ho )

발행기관 : 한국지형학회 간행물 : 한국지형학회지 28권 4호 발행 연도 : 2021 페이지 : pp. 1-13 (13 pages)

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In this study is aerial photos and UAV(Unmanned Aerial Vehicle) images were used to analyzed the characteristics of depositional landform changes in the Geum river channels before and after the opening gate of Gongju weir. Based on the depositional landform classification result, the main stream and the bare land occupied most of the area in all periods, and also found that the main stream, mid-channel island, and sand bar occupied a greater degree of area increase or decrease compared to other landforms in the classification items. As a result of analyzing the characteristics of depositional landform changes before and after the opening gate of Gongju weir, it is judged that the depositional landforms have changed due to the decreased water level of the Geum river after the opening of the weir, the summer rainy season and typhoons, river stabilization after the effluence of Daecheong dam, supply and deposition of river sediments and fixation of vegetation. The results derived from this study can be used as basic data for the study of river depositional landforms and the establishment of management and conservation plans for the landforms in river channels.

KCI등재

2섬진강침실습지의 2020년 홍수 전·후 토지피복 및 퇴적환경 변화 연구

저자 : 이예슬 ( Ye-seul Lee ) , 임정철 ( Jeong-cheol Lim ) , 장동호 ( Dong-ho Jang )

발행기관 : 한국지형학회 간행물 : 한국지형학회지 28권 4호 발행 연도 : 2021 페이지 : pp. 15-30 (16 pages)

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This study analyzed the changes in land-cover and sedimentary environment before and after flooding through drone images and sediment analysis for the Seomjin River Chimsil Wetland. The results showed that the area of some land-covers such as sand bar, grass, and trees were continuously changed. The acidity level of the sediments in the Seomjin River Chimsil Wetland was weakened gradually by flooding and EC was also decreased. The levels of organic matter, effective phosphoric acid, and CEC, however, were fluctuating depending on branches, which seems to be the result of landization as new sedimentary environment was developed and vegetation was settled after the flood. Average mean size of river sediments was found to be fine sand, and it exhibited various particle size characteristics from granule to medium silt depending on the location. As the sedimentary environment changed due to the effects of floods and typhoons, the particles were granulated or grain refined depending on the position. In the Seomjin River Chimsil Wetland, there were factors that could interfere with geomorphic development and sedimentary environment, contamination sources in and around the wetland, and natural threat factors. Therefore, in this study, a conservation and management plan was proposed to remove these threat factors and to preserve the scarcity, naturalness, and dynamics of Seomjin River Chimsil Wetland.

KCI등재

3태안 의항 해안의 홀로세 해수면 변화와 지형 형성과정

저자 : 이광률 ( Lee¸ Gwang-ryul )

발행기관 : 한국지형학회 간행물 : 한국지형학회지 28권 4호 발행 연도 : 2021 페이지 : pp. 31-39 (9 pages)

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Gaemok, the place name of Uihang-ri, Sowon-myeon, Taean-gun, Chungnam, indicates a tombolo. This study estimated the Holocene sea level change and development process of the coastal landforms of the Gaemok and Hwanyeong Tombolos in the Uihang coast. The tombolos seemed to form at approximately 3.4 ka and the average sea level at that time was estimated to be higher than that of the present by ca. 1 m. The Gaemok area was a separated island from the Taean peninsula during the Holocene Climatic Optimum. At approximately 3.4 ka when the sea level rose again after the fall, the Gaemok area was tied to the land by formation of the Gaemok and Hwanyeong Tombolos. The falling or fluctuating sea levels after 3.4 ka have shaped the present coastal landforms.

KCI등재

4PPK Kit를 활용한 드론 측량 분석

저자 : 박준호 ( Park Junho ) , 김태림 ( Kim Taerim )

발행기관 : 한국지형학회 간행물 : 한국지형학회지 28권 4호 발행 연도 : 2021 페이지 : pp. 41-52 (12 pages)

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With the popularization of drones and the ease of use of the Global Navigation Satellite System (GNSS), drone photogrammetry for terrain information has been widely used. Drone photogrammetry enables the realization of high-accuracy three-dimensional topography for the entire area with less effort and time compared to the past direct survey using GNSS or total station. From 3-D topographic data, various topographical analysis is possible. To improve the accuracy of drone photogrammetry, direct GCP surveying in the field is essential, and the numbers and reasonable positioning of GCPs are very important. In the case of beaches or tidal flats on the west coast of Korea, the numbers and location of GCPs are important factors in efficient drone photogrammetry because of the size of the area, difficulties of movement, and the risk from tides. If the RTK (Real-time kinematic) or PPK (Post-processed kinematic) method is used, the increased accuracy of the drone's location enables high-accuracy photogrammetry with a small number of GCPs. This study presents an efficient drone photogrammetry method in terms of time and economy by comparing and analyzing the results of drone photogrammetry using Non-PPK with low-cost PPK-Kit, based on the tests of various numbers and locations of GCPs in the university field including various slopes and structures like coastal terrain.

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