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한국지형학회> 한국지형학회지> 카메라 모니터링 자료를 활용한 남해안/제주 해빈 침식 분석

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카메라 모니터링 자료를 활용한 남해안/제주 해빈 침식 분석

South/Jeju Coast Beach Erosion Analysis Using Camera Monitoring Data

김태림 ( Taerim Kim )
  • : 한국지형학회
  • : 한국지형학회지 23권1호
  • : 연속간행물
  • : 2016년 03월
  • : 129-140(12pages)
피인용수 : 31건

(자료제공: 네이버학술정보)

DOI

http://dx.doi.org/10.16968/JKGA.23.1.10


목차

I. 서 론
II. 연구지역 및 비디오 관측 시스템
III. 5년간 해빈 면적 변화 관측
IV. 태풍 내습과 해빈 침식의 관계
V. 해빈별 침식 차이의 이유
VI. 결 론
사 사
References

키워드 보기


초록 보기


						
Camera monitoring data for 5 years from January 2009 to January 2014 are analyzed to investigate changes in beach erosion on Sangju, Gujora and Haeundae beaches on the South sea and Jungmun beach on the south shore of Jeju Island. The data show the time series of beach area changes obtained from digital orthoimages rectified from oblique images taken near the beaches by cameras. Each beach has different sediment sizes and shapes, but faces the South and is eroded mainly during Typhoons. However, each beach often responds differently to the same Typhoon, and some beaches outside the influence of the Typhoon are also eroded. This study shows that high frequency data of beach area changes obtained from cameras can effectively analyze the seasonal changes in beach area.

UCI(KEPA)

I410-ECN-0102-2017-450-000099620

간행물정보

  • : 자연과학분야  > 지질
  • : KCI 등재
  • : -
  • : 계간
  • : 1226-4296
  • :
  • : 학술지
  • : 연속간행물
  • : 1994-2019
  • : 736


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1동일 기반암 지역에서 산지와 곡지 암석의 풍화 특성 비교

저자 : 이광률 ( Gwang Ryul Lee )

발행기관 : 한국지형학회 간행물 : 한국지형학회지 23권 1호 발행 연도 : 2016 페이지 : pp. 1-16 (16 pages)

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This study estimates relationships between physical and chemical weathering indices of various rock types and topographical relief. Physical weathering properties such as rock strength and joint and chemical weathering indices such as the SiO2/Al2O3, CIA and WPI were analyzed from 18 rock outcrops in mountain and valley areas consisting of 9 rock types. The results indicate that the elevation and relief of topography increase physical strength of rock increases. It can be suggested that the total r(rock-mass strength rating) and R(rock rebound strength by Schmidt Hammer) are most useful indices as a quantitative weathering property factor to explain formative causes of topographical relief. The results also suggest that rock types such as sandstone, granite, gneiss and schist are most suitable to explain meaningful difference in topographical relief with the physical and chemical weathering indices.

2정동진 단구 자갈층과 충진 물질의 입도 및 형상 특성에 대한 연구

저자 : 김종연 ( Jong Yeon Kim ) , 양동윤 ( Dong Yoon Yang ) , 신원정 ( Won Jeong Shin )

발행기관 : 한국지형학회 간행물 : 한국지형학회지 23권 1호 발행 연도 : 2016 페이지 : pp. 17-33 (17 pages)

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Samples from newly exposed outcrop of sedimentary layers forming Jeongdongjin coastal terrace in Gangreung area are collected and analyzed to find the sedimentary environment. The site are located at the gentle hillslope of the terrace surface area. The height of the outcrop is about 8m and the altitude of it`s highest part is 68~73m MSL. The lowest part of this out crop is the partly consolidated sand layer with gravel veneer within it. It is found that this part is not in-situ weathered sand stone through the OSL method. This sand layer is overlain by the gravel layer with sand matrix. The shapes of the gravels from this part are mainly ``platy``, ``elongated``, and ``bladed`` by the index of Sneed and Folk(1958). In addition, mean roundness is not so high. It is sceptical to regard this part as marine sediments which are continuously exposed to erosional processes. The boundary between the lowest sand layer and gravel layer showing the abrupt change in forming material without any mixture or transitional zone, so gravels are seemed to deposited after some degree of consolidation of the lowest sand layer. In addition, the hight of the boundary between layers are changed by the place, so the surface of the partly consolidated sand layer is not flat and has irregularity on topography when it buried by gravels. Main part of this out crop is the poorly sorted coarse gravel(22.4mm) with sand matrix(1.36φ) layer with at least 2m thick covering the relatively fine gravels discussed above. Over 20% of particles have ``very platy``, ``very elongated`` and ``very bladed`` shape and only less than 5% of particles have ``compact`` shape, So this particles are also very hard to be regard as marine gravels which are abraded by marine processes. It can be concluded that this gravel layer formed by fluvial processes rather than coastal processes base on the form of the clast and sedimentary structure. The gravel layer is covered by fine(3~4φ) material layers of psudo-gleization which showing inter-bedding of red and white layers. Chemical composition of matrix and other fine materials should be analyzed in further studies. It is attempted to fine the burial ages of the sediment using OSL method, but failed by the saturation. So it can be assumed that these sediments have be buried over 120ka.

3봉화 면산습지의 형성과정

저자 : 손명원 ( Myoung Won Son ) , 백충렬 ( Chung Yeol Baek )

발행기관 : 한국지형학회 간행물 : 한국지형학회지 23권 1호 발행 연도 : 2016 페이지 : pp. 35-45 (11 pages)

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Aiming to elucidate the formation processes of Myeonsan wetland around the ridge from Myeonsan peak to Seokgae pass, this paper analyzes the geomorphic, physical and chemical characteristics of the wetland. The results are as follow: Firstly, resistant bedrock and big boulders distributed on the riverbed of the small channel from the wetland to Seokgaecheon have played a role as a temporary base level. At the upstream part above this point, a wide and shallow depression was formed and developed into a wetland. There was a gorge covered with boulders at downstream part. Secondly, owing to the obstacles at the outlet of wetland, deposits on bed tend to be downstream coarsening. Finally, deposits show weak acidity of pH 5.0~5.7. The source of wetland water is groundwater containing rich Ca and Na. Trees in the wetland help much more Ca accumulated. And deposit biotite and amphibole contained rich Mg have been weathered in the wetland.

4안면도 바람아래 할미섬 주변의 시계열적 침식,퇴적환경 변화 분석

저자 : 유재진 ( Jae Jin Yu ) , 김장수 ( Jang Soo Kim ) , 장동호 ( Dong Ho Jang )

발행기관 : 한국지형학회 간행물 : 한국지형학회지 23권 1호 발행 연도 : 2016 페이지 : pp. 47-60 (14 pages)

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In this study, datum points measurement have been collected and then weather data have been analyzed to figure out erosion and deposition environmental change around Halmi-island, Baramarae. First of all, it was difficult to analyze geomorphological change which is caused by climate change because of quite short term of collection period of data. However, differences in spatial distribution of erosion and deposition have locally been shown. In all season, the wind is blowing in north and north-west direction mostly except in summer which is shifted to south direction. However, since its ratio which are above 5m/s is much lower than the north and north-west wind, its effect on geomorphological process is very tiny. In order to look at a tendency of erosion and deposition environmental change around Baramarae Halmi-island, the periphery of Halmi-island was classified to east and west part, then accumulated erosion and deposition values have been calculated. As a result, generally, the datum points are located in the west part which are mostly depositional sites. On the other hand, the datum points are located in east part showed the dominant erosion patterns.

5울산시 태화강 하류부의 Holocene 중기 이래 해수면변동과 고지형변화

저자 : 김정윤 ( Jeong Yun Kim ) , 황상일 ( Sangill Hwang ) , 윤순옥 ( Soon Ock Yoon )

발행기관 : 한국지형학회 간행물 : 한국지형학회지 23권 1호 발행 연도 : 2016 페이지 : pp. 61-75 (15 pages)

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This study aims to reconstruct sea level change and paleogeomorphology since the middle Holocene by diatom analysis and 14C-dating from the sedimentary facies of three trenches on alluvial plain of Taehwa River, Taehwa-dong, Ulsan-si, South Korea. The Taewha-dong area was a narrow bay located between Bangeojin and eatuary of Taehwa River was a narrow bay which has been detached from the open sea during middle Holocene. Taewa-dong area at bay area was developed into alluvial plain by the sediments had been come from the Taewa river basin. The sea level change during the middle Holocene effected on the development of Taewha-dong alluvial plain and its information is included in the sediment facies.

6End-Member Mixing Analysis를 이용한산림 소유역의 임상별 유출분리 비교

저자 : 김수진 ( Su Jin Kim ) , 최형태 ( Hyung Tae Choi )

발행기관 : 한국지형학회 간행물 : 한국지형학회지 23권 1호 발행 연도 : 2016 페이지 : pp. 77-85 (9 pages)

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To understand the difference of runoff discharge processes between Gwangneung deciduous and coniferous forest catchments, we collected hydrological data (e.g., precipitation, soil moisture, runoff discharge) and conducted hydrochemical analyses in the deciduous and coniferous forest catchments in Gwangneung National Arboretum in the northwest part of South Korea. Based on the end-member mixing analysis of the three storm events during the summer monsoon in 2005, the hillslope runoff in the deciduous forest catchment was higher 20% than the coniferous forest catchment during the first storm event. Howerver, hillslope runoff increased from the second storm event in the coniferous catchment. We conclude that low soil water contents and topographical gradient characteristics highly influence runoff in the coniferous forest catchment during the first storm events. In general, coniferous forests are shown high interception loss and low soil moisture compared to the deciduous forests. It may also be more likely to be a reduction in soil porosity development when artificial coniferous forests reduced soil biodiversity. The forest soil porosity is an important indicator to determine the water recharge of the forest. Therefore, in order to secure the water resources, it should be managed coniferous forests for improving soil biodiversity and porosity.

7관개 회귀수 추정을 위한 BROOK90-K의 개발과 검증

저자 : 박종철 ( Jongchul Park ) , 김만규 ( Man Kyu Kim )

발행기관 : 한국지형학회 간행물 : 한국지형학회지 23권 1호 발행 연도 : 2016 페이지 : pp. 87-101 (15 pages)

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This study was conducted to develop a hydrological model of catchment water balance which is able to estimate irrigation return flows, so BROOK90-K (Kongju National University) was developed as a result of the study. BROOK90-K consists of three main modules. The first module was designed to simulate water balance for reservoir and its catchment. The second and third module was designed to simulate hydrological processes in rice paddy fields located on lower watershed and lower watershed excluding rice paddy fields. The models consider behavior of floodgate manager for estimating the storage of reservoir, and modules for water balance in lower watershed reflects agricultural factors, such as irrigation period and, complex sources of water supply, as well as irrigation methods. In this study, the models were applied on Guryangcheon stream watershed. R2, Nash-Sutcliffe efficiency (NS), NS-log1p, and root mean square error between simulated and observed discharge were 0.79, 0.79, 0.69, and 4.27 mm/d respectively in the model calibration period (2001~2003). Furthermore, the model efficiencies were 0.91, 0.91, 0.73, and 2.38 mm/d respectively over the model validation period (2004~2006). In the future, the developed BROOK90-K is expected to be utilized for various modeling studies, such as the prediction of water demand, water quality environment analysis, and the development of algorithms for effective management of reservoir.

8단보 : ADCP 후처리 소프트웨어(adcptools)를 이용한 하천 흐름 분석

저자 : 이찬주 ( Chanjoo Lee ) , 김종필 ( Jong Pil Kim ) , Edward Park , Karl Kastner

발행기관 : 한국지형학회 간행물 : 한국지형학회지 23권 1호 발행 연도 : 2016 페이지 : pp. 103-115 (13 pages)

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At present, an acoustic Doppler current profiler (ADCP) is one of the most suitable tools for measurement of three dimensional flow characteristics in the river. The data resulting from this approach can be used for flow visualization and velocity mapping together with post-processing software tools. Among them, ``adcptools`` is the latest one and provides more realistic velocity distribution in the cross-section since it uses velocity along the beam direction. In this study, a flow analysis was made using the ``adcptools`` for the Amazon River and the Han River dataset. Discharge was recalculated and accuracy of discharge and velocity was evaluated. Streamwise velocity distribution and secondary flow pattern in cross-sections were visualized. Geo-referenced velocity distribution was also mapped. A summary with future prospect of ``adcptools`` for studies on fluvial geomorphology is briefly given.

9무인항공기반 태안반도 방포해빈의 지형분석

저자 : 배성지 ( Sungji Bae ) , 유재형 ( Jaehyung Yu ) , 정용식 ( Yong Sik Jeong ) , 양동윤 ( Dongyoon Yang ) , 한민 ( Min Han )

발행기관 : 한국지형학회 간행물 : 한국지형학회지 23권 1호 발행 연도 : 2016 페이지 : pp. 117-128 (12 pages)

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High resolution aerial photographs and digital elevation models for Bangpo beach using UAV were generated in this study to analyze the thematic and geometric characteristics of coastal features. Based on 728 aerial images acquired on September 10, 2016 by the UAV, a image mosaic at 2.2 cm spatial resolution and a digital elevation model at 4.4 cm spatial resolution were developed. This study found out that Bangpo beach consisted of intertidal zone and supratidal zone. The intertidal zone can be subdivided into lower part and upper part with distinctive geomorphological characteristics. While the lower part included sand bars and ripple marks along the coastline, the cusps and sand dunes were the major coastal features of the upper part. Part of the intertidal zone was occupied by shore platform with average slope of 0.9 degree containing various sizes of gravels. The supratidal zone slanted toward ocean with berms on the surface with an interval of 15 m. These coastal features indicated the flow intensity towards to the land and tidal effect. It validated that the UAV application in coastal research was very effective analyzing to examine coastal processes.

10카메라 모니터링 자료를 활용한 남해안/제주 해빈 침식 분석

저자 : 김태림 ( Taerim Kim )

발행기관 : 한국지형학회 간행물 : 한국지형학회지 23권 1호 발행 연도 : 2016 페이지 : pp. 129-140 (12 pages)

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Camera monitoring data for 5 years from January 2009 to January 2014 are analyzed to investigate changes in beach erosion on Sangju, Gujora and Haeundae beaches on the South sea and Jungmun beach on the south shore of Jeju Island. The data show the time series of beach area changes obtained from digital orthoimages rectified from oblique images taken near the beaches by cameras. Each beach has different sediment sizes and shapes, but faces the South and is eroded mainly during Typhoons. However, each beach often responds differently to the same Typhoon, and some beaches outside the influence of the Typhoon are also eroded. This study shows that high frequency data of beach area changes obtained from cameras can effectively analyze the seasonal changes in beach area.

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