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2025 Vol.12, Issue 4 Preview Page

Original Article

Three-Dimensional Estimation of Foredune Sand Volume in Coastal Dunes Using Drone LiDAR

드론 라이다를 활용한 해안사구 전사구 모래량의 3차원 체적 산정 연구

Giyoung Ock1*
,
Tae-Heon Kim2
옥 기영1*
,
김 태헌2
1Team Leader, Ecological Technology Research, National Institute of Ecology, Seocheon 33657, Korea
2Researcher, Protected Area Research, National Institute of Ecology, Seocheon 33657, Korea
1국립생태원 생태신기술팀 팀장
2국립생태원 보호지역연구팀 연구원
*Corresponding Author
31 December 2025. pp. 353-361
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Abstract

Coastal sand dunes provide important ecosystem services, serving as natural breakwaters and maintaining biodiversity. The sand volume of foredunes is a key factor in sustaining these functions. In Korea, foredune sand volume is used as a core indicator for evaluating the dynamics and scale of coastal dunes. However, the conventional two-dimensional cross-sectional area method has limitations in spatial representativeness due to its reliance on a single transect. This study presents a three-dimensional volumetric method for precise measurement of coastal dune topography and quantitative estimation of foredune sand volume using drone LiDAR. Multiple cross-sections were extracted from high-resolution digital elevation models to generate foredune toe and crest lines, from which sand volume was calculated. Field surveys were conducted at Cheotguji Dune during autumn and winter of 2024. The results revealed changes in total sand storage caused by the winter monsoon storm and spatial variations in erosion and deposition along the foredune ridge. The procedure presented in this study can be applied to advance coastal dune monitoring systems.

Keywords
Coastal dune
Foredune
Sand storage volume
UAV LiDAR

해안사구는 자연방파제 역할과 생물다양성 유지 등 중요한 생태계 서비스를 제공하며, 이러한 기능의 핵심 요소는 전사구의 모래량이다. 우리나라에서는 전사구 모래량을 해안사구의 역동성과 규모를 평가하는 핵심 지표로 활용하고 있으나, 기존의 횡단면 기반 2차원 면적법은 단일 측선을 사용하여 공간적 대표성에 한계가 있었다. 본 연구에서는 드론 라이다를 활용하여 해안사구의 미세 지형을 정밀 측정하고, 전사구 모래량을 입체적으로 산정하는 3차원 체적법을 제시하였다. 고해상도 수치표고모델로부터 다수의 횡단면을 추출하여 전사구시점열과 사구마루열을 생성한 후 체적을 산정하였다. 신안군 첫구지사구를 대상으로 2024년 가을과 겨울에 현장조사를 수행한 결과, 북서계절풍에 의한 총 모래 저장량의 변화와 전사구열을 따른 침식·퇴적의 공간적 변이를 확인하였다. 본 연구에서 제시한 표준화된 절차는 향후 국내 해안사구 모니터링 고도화에 활용될 수 있을 것으로 기대된다.

키워드
해안사구
전사구
모래 저장량
드론 라이다
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Information
  • Publisher :Korean Society of Ecology and Infrastructure Engineering
  • Publisher(Ko) :응용생태공학회
  • Journal Title :Ecology and Resilient Infrastructure
  • Journal Title(Ko) :응용생태공학회 논문집
  • Volume : 12
  • No :4
  • Pages :353-361
  • Received Date : 2025-12-08
  • Revised Date : 2025-12-15
  • Accepted Date : 2025-12-15
  • DOI :https://doi.org/10.17820/eri.2025.12.4.353
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