Mapping reef islands in 3D
summary
Field campaign proves 3D mapping of reef islands is feasible at sub‑meter resolution: drones (a Mavic 3 multispectral flown at 60–100 m), a GeoSLAM handheld mobile laser scanner, terrestrial laser scans and survey‑grade GNSS produce orthomosaics, DSMs and merged point clouds via Metashape + CloudCompare and Arc/QGIS workflows. Ten uninhabited islands are surveyed in one week; one shows the highest erosion rates, vertical sand transfer appears where 2D maps show little change, and logistics (battery limits, 50°C drone temps, tide windows) constrain repeatability.
AI-written summary · about
chapters (8)
- 0:00Introduction and background
- 1:26Project aim and research gap
- 3:11Pilot study overview and fieldwork
- 6:06Data collection and software tools
- 8:11Primary results and 3D models
- 9:14Atoll island survey challenges
- 12:07Results and future plans
- 13:31Q&A session
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