인공구조물 건설 후 안면도 가경주 간석지의 퇴적환경 및 미지형변화 분석
Analysis of Sedimentary Environment and Micro-Landform Changes After the Construction of Artificial Structures in the Tidal Flat of Anmyeondo Gagyeongju, Western Coast of Korea
0
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
This study investigated the characteristics of sedimentary environment changes across a tidal flat in Gagyeongju of Anmyeondo Island. We performed a spatio-temporal analysis on the grain sizes composition of sediments and micro-landform changes during the winter from 2013 to 2016. The results showed that erosion was a dominant process throughout the study flat, reducing the surface elevation even by 1 m around the upper sand flat. As a consequence, headlands have formed in the entire region of Gagyeongju village. In addition, erosion quickly progressed along the low-lying subtidal zone and tide way and, in contrast, sedimentation progressed in the mid-elevation tidal flat. We posit that a jetty, which had been constructed as a pier facility on the eastern part of the study area, interfered with the flow of tidal current, thereby enhancing these erosional processes. This is because such interference can block the supply of fine-textured sediments from the nearby Cheonsu Bay and therefore reduce surface elevation. According to the surface sediment analysis, the sediments were categorized into 7 sedimentary facies, and generally displayed a high ratio of silt and clay. The result of time-series analysis (2012-2013) showed that the sediments on the tidal flat became fine-grained, and that sorting became worse. However, the sediments on the subtidal zone, embayment and along inside of the jetty tended to be coarse-grained. In conclusion, the tidal flat micro-landform change in the study area was caused by a disruption in the seawater circulation due to the jittery construction within the tidal flat, which had a direct effect on erosional and sedimentary environment processes.
Abstract
This study investigated the characteristics of sedimentary environment changes across a tidal flat in Gagyeongju of Anmyeondo Island. We performed a spatio-temporal analysis on the grain sizes composition of sediments and micro-landform changes during the winter from 2013 to 2016. The results showed that erosion was a dominant process throughout the study flat, reducing the surface elevation even by 1 m around the upper sand flat. As a consequence, headlands have formed in the entire region of Gagyeongju village. In addition, erosion quickly progressed along the low-lying subtidal zone and tide way and, in contrast, sedimentation progressed in the mid-elevation tidal flat. We posit that a jetty, which had been constructed as a pier facility on the eastern part of the study area, interfered with the flow of tidal current, thereby enhancing these erosional processes. This is because such interference can block the supply of fine-textured sediments from the nearby Cheonsu Bay and therefore reduce surface elevation. According to the surface sediment analysis, the sediments were categorized into 7 sedimentary facies, and generally displayed a high ratio of silt and clay. The result of time-series analysis (2012-2013) showed that the sediments on the tidal flat became fine-grained, and that sorting became worse. However, the sediments on the subtidal zone, embayment and along inside of the jetty tended to be coarse-grained. In conclusion, the tidal flat micro-landform change in the study area was caused by a disruption in the seawater circulation due to the jittery construction within the tidal flat, which had a direct effect on erosional and sedimentary environment processes.
참고문헌 (29)
- 장진호, "곰소만 조간대 퇴적물의 장기적 변화", 한국지구과학회지, 28(3), pp.357~366 (2007), 한국지구과학회
- Deutsch, C. V., "GSLIB:Geostatistical Software Library and User’s Guide" (1998), Oxford University Press
- Folk, R. L., "A review of grain-size parameters", Sedimentology, 6, pp.344~359 (1966)
- Galehouse, J. S., "Sedimentation analysis: Procedures in Sedimentary Petrology" (1971), Wiley Interscience
- Goovaerts, P., "Geostatistics for Natural Resources Evaluation" (1997), Oxford University Press
- 장동호, "표층퇴적물 분석을 통한 동계 안면도 바람아래해수욕장 주변의 퇴적환경 변화특성", 한국지형학회지, 17(1), pp.15~27 (2010), 한국지형학회
- Jang, D. H., "Change of the sedimentary environment system around the Baramarae beach, Anmyeondo area in west coast of Korea", Ournal of the Korean Geomorphological Association, 10(2), pp.143~155 (2003)
- 김장수, "침수 취약성 평가: 안면도 바람아래 조간대 지역을 사례로", 한국지형학회지, 17(2), pp.29~39 (2010), 한국지형학회
- 김정수, "항공LiDAR를 이용한 갯골 횡단면 분석 - 갯벌 유형에 따른 차이를 중심으로 -", 한국지형학회지, 20(2), pp.67~82 (2013), 한국지형학회
- Kim, Y. S., "Assessment of landform changes in baramarae tidal flat, Korea using combined analysis of multi-temporal remote sensing images and grain size measurement data", Journal of Marine Science and Technology, 24(6), pp.1070~1080 (2016)
- 김예슬, "지구통계학적 시뮬레이션을 이용한 수륙경계선 기반 간석지DEM의 오차 분석 및 확률론적 침수 취약성 추정", 한국지형학회지, 20(4), pp.85~99 (2013), 한국지형학회
- Explanatory note of the Daejeon sheet (1:250,000), "Lee, B. J.", Korea Institute of Geoscience and Mineral Resources, ~ (1996)
- 이효성, "드론을 이용한 함평만 갯벌 DEM 제작과 해수 변화량 파악", 대한원격탐사학회지, 33(3), pp.325~331 (2017), 대한원격탐사학회
- 이상원, "다변량 크리깅과 KOMPSAT-2 영상을 이용한 간석지 표층 퇴적물 분류", 한국지형학회지, 19(3), pp.37~49 (2012), 한국지형학회
- Long, N., "Monitoring the Topography of a Dynamic Tidal Inlet Using UAV Imagery", Remote Sensing, 8(5), pp.387~ (2016)
- Sailing Direction for The West Coast of Korea, "Office of Hydrographic Affairs", Office of Hydrographic Affairs, ~ (1992)
- 박노욱, "현장 조사 자료를 이용한 GIS 기반 주제도 작성을 위한 단변량 크리깅 기법의 비교", 대한원격탐사학회지, 25(4), pp.321~338 (2009), 대한원격탐사학회
- 박성우, "위성영상을 이용한 강화도 남단갯벌의 DEM 추출", Spatial Information Research, 11(1), pp.13~22 (2003), 대한공간정보학회
- Park, Y. A., "Late quaternary(late pleistocene and holocene)stratigraphy and unconformity in the Kimpo tidal deposits, Kyunggi bay, west coast of Korea", The Korean Journal of Quaternary Research, 13(1), pp.79~89 (1999)
- Pye, K., "Assessment of beach and dune erosion and accretion using LiDAR:Impact of the stormy 2013-14 winter and longer term trends on the Sefton Coast, UK", Geomorphology, 266, pp.146~167 (2016)
- Rainey, M. P., "Mapping intertidal estuaries sediment grain size distributions through airborne remote sensing", Remote Sensing of Environment, 86, pp.480~490 (2000)
- Richter, A., "Dune cliff erosion and beach width change at the northern and southern spits of Sylt detected with multi-temporal Lidar", CATENA, 103, pp.103~111 (2013)
- 유주형, "고해상도 위성자료를 이용한 조간대 표층 퇴적상의 정성적 분류 - 천수만 황도 조간대의 경우 -", 지질학회지, 41(2), pp.199~210 (2005), 대한지질학회
- 류주형, "곰소만 조간대 퇴적물의 Landsat ETM+ 자료 특성", 대한원격탐사학회지, 19(2), pp.117~133 (2003), 대한원격탐사학회
- Ryu, J. H., "Waterline extraction from Landsat TM data in a tidal flat:a case study in Gomso Bay, Korea", Remote Sensing of Environment, 83(3), pp.442~456 (2002)
- Sara khodadad, "안면도 바람아래해수욕장 주변의 동계 지형 변화 및 퇴적환경 특성 분석", 한국지형학회지, 21(1), pp.95~109 (2014), 한국지형학회[DOI]
- Wal, D., "Regressionbased synergy of optical, shortwave infrared and microwave remote sensing for monitoring the grain-size of intertidal sediments", Remote Sensing of Environment, 111, pp.89~106 (2007)
- 유재진, "해안지역의 시계열 지형변화 분석을 위한 UAS 활용 가능성 평가: 안면도 바람아래해변을 대상으로", 한국지형학회지, 23(4), pp.113~126 (2016), 한국지형학회[DOI]
- Zhen Xu, "원격탐사자료를 이용한 인공구조물 건설에 의한 군산 유부도 조간대의 지형변화 및 표면특성에 관한 연구", 대한원격탐사학회지, 29(1), pp.57~68 (2013), 대한원격탐사학회[DOI]