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논문 기본 정보

자료유형
학술저널
저자정보
강지현 (국립생태원) 김혜진 (국립생태원)
저널정보
한국지형학회 한국지형학회지 한국지형학회지 제28권 제2호
발행연도
2021.1
수록면
45 - 57 (13page)

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초록· 키워드

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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.

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