항공사진 및 지상라이다를 활용한 독도 자갈해빈의 시계열적 변화분석
Temporal Changes in Gravel Beach Morphology of Dokdo Island Using Aerial Photos and Ground-based LiDAR Data
1
조회
0
다운로드
3
인용
0
참고문헌
키워드
초록
In this study, the changes in morphology of Dokdo’s gravel beach and its responses due to a storm event were analyzed using the aerial photos and 3D LiDAR data obtained during an ecosystem survey of the Dokdo in 2020. Dongdo Island’s gravel beach, shown by aerial photo analysis, increased in area due to sedimentation after the construction of a dock, but there was no more significant changes in area after having grown to Sutdolbawi inside the dock. The changes in volume of the gravel beach were indicated based on 3D data acquired in May and November 2020. A strong typhoon that passed in September, 2002, caused erosion on the backshore and sedimentation on the foreshore and formed the berm by about 1.5 to 2 m high. The analysis showed that the sedimentation was 94.76 m3 in volume and 329 m2 in area and the erosion was 250.75 m3 in volume and 603m2 in area, which suggested that the overall change of the gravel beach was erosion. The changes in the morphology of the gravel beach on Seodo Island occurred with the seasons along with the changes in area. In addition, berms of different altitudes appeared on the southern and northern sides of the spit, which was also estimated to have formed by the seasonal current direction and wave energy.
Abstract
In this study, the changes in morphology of Dokdo’s gravel beach and its responses due to a storm event were analyzed using the aerial photos and 3D LiDAR data obtained during an ecosystem survey of the Dokdo in 2020. Dongdo Island’s gravel beach, shown by aerial photo analysis, increased in area due to sedimentation after the construction of a dock, but there was no more significant changes in area after having grown to Sutdolbawi inside the dock. The changes in volume of the gravel beach were indicated based on 3D data acquired in May and November 2020. A strong typhoon that passed in September, 2002, caused erosion on the backshore and sedimentation on the foreshore and formed the berm by about 1.5 to 2 m high. The analysis showed that the sedimentation was 94.76 m3 in volume and 329 m2 in area and the erosion was 250.75 m3 in volume and 603m2 in area, which suggested that the overall change of the gravel beach was erosion. The changes in the morphology of the gravel beach on Seodo Island occurred with the seasons along with the changes in area. In addition, berms of different altitudes appeared on the southern and northern sides of the spit, which was also estimated to have formed by the seasonal current direction and wave energy.
참고문헌 (18)
- Allan, J. C., "The use of passive integrated trasnponder tags to trace cobble transport in a mixed sand-and gravel beach on the high-energy Pregon coast, USA", Marine Geology, 232(1-2), pp.63~86 (2006)
- Bierman, P. R., "Key concepts of geomorphology" (2013), Macmillan Learning
- Bishop, M., "Remote sensing and geomorphometry forstudying relief production in high mountains", Geomorphology, 55, pp.345~361 (2003)
- Glenn, F., "Analysis of lidar-derived topograohic information for characterizing and differentiating landslide morphology and activity", Geomorphology, 73 (2006)
- Gritzner, M., "Assessing landslide potential using GIS, soil wetness modeling and topographic attributes, Payette River, Idaho", Geomorphology, 37, pp.149~165 (2001)
- Han, M., "The study of geomorphological characteristics and tracking sediment movement in gravel beach, Korean Peninsula", Ph.D, pp.2018
- 황상일, "독도 동도 서쪽 해안의 타포니 지형 발달", 한국지역지리학회지, 13(4), pp.422~437 (2007), 한국지역지리학회
- 강지현, "라이다 데이터를 이용한 독도의 지형분류와 사면안정성 연구", 한국지형학회지, 16(3), pp.15~27 (2009), 한국지형학회
- 강지현, "독도에 발달한 역빈의 시계열적 변화와 특성분석", 한국지형학회지, 23(4), pp.57~68 (2016), 한국지형학회[DOI]
- KIGAM, "1:2,500 Geological map of the Dokdo", ~ (2012)
- The report of basic research for Dokdo Ecosystem, "KORDI", Ministry of Oceans and Fisheries, ~ (2006)
- Masseling, G., "The extreme 2013", 2014 winter storms: hydrodynamic forcing and coastal response along the southwest coast of England, 2016, pp.41(3), 378~391
- Sear, D. A., "TracerinGeomorphology", pp.21~55 (2000), John Wiley & Sons
- The report of Dokdo ecosystem; the part of Geomorphology and landscape, "Seung, K. D.", Daegu Regional Environment Office, ~ (2010)
- Sohn, Y. K., "Geology and Evolution of Tok Island", Journal of the Geological Society of Korea, 30(3), pp.242~261 (1994)
- 손일, "거제도 학동 자갈해빈의 변화와 그 원인에 관한 연구 -해빈 단면의 모니터링을 통해-", 한국지역지리학회지, 10(1), pp.177~191 (2004), 한국지역지리학회