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한국지형학회지 update

JOURNAL OF THE GEOMORPHOLOGICAL ASSOCIATION OF KOREA

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수록정보
수록범위 : 1권1호(1994)~29권3호(2022) |수록논문 수 : 826
한국지형학회지
29권3호(2022년 09월) 수록논문
최근 권호 논문
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KCI등재

저자 : 신원정 ( Shin Won Jeong ) , 김종연 ( Kim Jong Yeon )

발행기관 : 한국지형학회 간행물 : 한국지형학회지 29권 3호 발행 연도 : 2022 페이지 : pp. 1-20 (20 pages)

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Among the reports for damaged area by landslide in Chungju, Jecheon, and Danyang-gun in the northern region of Chungcheongbuk-do, where damage occurred due to heavy rainstorms from July 28 to August 11, 2020, the coordinates of the locations has been confirmed at 438 places. Analyses were conducted for those spots using the landslide information system of the Korea Forest Service, geological information from geobig data, KAKAO map, and satellite images from Google Earth. The most common bedrock in the affected area was granite, followed by gneiss, limestone and other sedimentary rocks, slate and phyllite. As for the slope, sedimentary rocks such as granite and limestone have the steepest slope, and gneiss, granite, slate and phyllite follows it. It seems that the impact by landslide on these types of rocks depended on slope and weathering pattern.
The damage type examined in 375 sites out of 438 were due to erosion and sediment runoff from the slope, and debris flow occurred in 63 places. In 31 of them, it was found that the outflow of soil from the slope was connected to the debris flow. As a result of analyzing the rock types, most of the debris flow in the granite area appeared to be 'runoff-dominant erosion'. It seems that 'infiltration-triggered soil slip' was strong in the limestone area.
In this study, using Dynamic World, Google's land cover change tracking service, surface cover changes were tracked between 2018 and 2021-2022 before landslide-related damage occurred, and it was found that small-scale vegetation changes in land use near the study area. It can be seen that changes in Korea's forestry policy have had a significant impact on this. In particular, significant landslides have occurred after the considerable amount of time followed by anthropogenic change of vegetation and building of forest roads. Therefore, it seems that continuous management is essential to prevent landslide disasters after anthropogenic changes in land cover. In addition, field studies on the condition of soil weathering in mountainous areas and the process of material movement on slopes are essential.

KCI등재

저자 : 이광률 ( Lee Gwang-ryul )

발행기관 : 한국지형학회 간행물 : 한국지형학회지 29권 3호 발행 연도 : 2022 페이지 : pp. 21-34 (14 pages)

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The granite erosional basins are well developed in South Korea, where granite covers a dominant portion of the geology and alluvial fans and fanlike terraces are well developed in the erosional basin. This study analyzed the geomorphological formation ages of 12 selected alluvial fans and fanlike terraces developed in 9 granite erosional basins in South Korea. As a result, it is estimated that alluvial fans formed ca. ~10ka, 30ka, 50ka, 75ka, and 90ka. Therefore, it is estimated that the return period of paleo-flood, which is a formation factor of alluvial fans, was approximately 25,000 to 30,000 years during the Late Quaternary.

KCI등재

저자 : 윤혜연 ( Yoon Hye-yeon ) , 정근비 ( Jeong Geun-bi ) , 임정철 ( Lim Jeong-cheol ) , 장동호 ( Jang Dong-ho )

발행기관 : 한국지형학회 간행물 : 한국지형학회지 29권 3호 발행 연도 : 2022 페이지 : pp. 35-46 (12 pages)

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This study analyzed the changes of the Jang-gumegi wetland using multi-temporal aerial images, and proposed an objective method of delineating wetland boundaries. The result of the study indicated that the Jang-gumegi wetland were formed in paddy fields in the early 1900's, and the number of households and paddy area continued to increase by the government's 5-year plan for agricultural production enhancement and the baby boom thereafter. On the other hand, the study area gave up on agricultural production when the number of households decreased due to migration from rural to urban area after the 1980's, and the fields have been abandoned since then. Meanwhile, the wetland boundaries were re-detected based on the location information by GPS and soil depth data and sediment samples were updated in the Jang-gumegi wetland. The soil depth between the regions was proportionated to the period of paddy cultivation, and the grain size of the sediment consisted mostly of clay, silt and partially sandy particles. This reflected poor drainage of paddy fields, and it indicated that the sediment supplied from the slope after fallow was deposited along a gentle slope. The derived result is expected to serve as a guideline for the establishment of preservation and management measures for abandoned paddy wetlands and a better methodology for wetland boundary settings.

KCI등재

저자 : 권용휘 ( Kwon Yong-whuy ) , 황상일 ( Hwang Sangill )

발행기관 : 한국지형학회 간행물 : 한국지형학회지 29권 3호 발행 연도 : 2022 페이지 : pp. 47-68 (22 pages)

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KCI등재

저자 : 구덕훈 ( Koo Deok Hoon ) , 조대헌 ( Cho Dae Heon ) , 최광희 ( Choi Kwang Hee )

발행기관 : 한국지형학회 간행물 : 한국지형학회지 29권 3호 발행 연도 : 2022 페이지 : pp. 69-85 (17 pages)

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We developed interesting Geomorphic Simulation UCCs (GS-UCCs) that can be easily taught and learned. The GS-UCC refers to a video that explain the formation processes in a geomorphic model using real materials such as sand, ice, and water. For this, we analyzed the secondary school curriculum and textbooks and investigated teacher's perception. We produced three GS-UCCs to study geomorphic processes by exogenic agencies including wind, river, and glacier. In addition, a survey and written interview were conducted to collect opinions on them. 89 secondary school teachers were participated in the survey. These survey data were analyzed through independent sample t-test and categorization. As results, secondary school teachers evaluated the three GS-UCCs positively in terms of motivation for learning, achievement of learning goals, and curriculum matching. However, the teachers worry about the possibility of misconceptions and gaps between real geomorphic processes and models. Additionally, teachers' perception on GS-UCCs was different according to school level such as middle and high, and degree of experience of geography subject classes.

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