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Nguyen, H. P., Pham, M. H., & Nguyen, T. T. S. (2019). Shallow-water Bathymetry by stereo photogrammetric approach using satellite imageries WorldView-2, experimental case in submerged reef Hai Sam, Spratly Islands, Vietnam. Journal of Geodesy and Cartography, (42), 32–38. https://doi.org/10.54491/jgac.2019.42.355
Abstract
Satellite multispectral image data is being applied effectively in bathymetry in shallow water areas. Most of studies are focused on determining the water depth usingthe radiometric approach. However, with the acquiring ability of stereo imagedata in a single pass from WorldView-2 satellite, the photogrammetric approachis becoming more interestingly because the advantage of without using In-Situ data. In this experimental case, the near-shore bathymetry by stereo photogrammetryusing WorldView-2 satellite data is conducted at the coral reef Hai Sam that belong to SpratlyIslands (Vietnam). After removing the affects of atmosphere and sun-glint aswell as adjusting the depth difference caused by refraction at the water/airinterface, the achieved depth can be up to over 42,0 m. These results show that the applicability of shallow-water bathymetry by stereo photogrammetry can beapplied spreadly to other islands, islets and surmerged reefs at the ParacelIslands and the Spratly Islands.
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