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Elaboration du référentiel hydrographique d'Haïti à partir d'un MNT Aster

Abstract : The study presented in this article has provided the first homogeneous hydrographical reference system on Haïti. An automated method was implemented for the extraction of the river network and the watershed boundaries based on an ASTER DTM and a digitized topographic map. A statistical analysis of the results highlighted the fractal properties of the relief of the region and thresholds were fixed to select the most significant watersheds. The quality control of the river network, based on ground control points and on a visual comparison with Google Earth imagery, highlighted a geometrical accuracy close to or better than the DTM mesh size (around 30 m). In addition, the selected watersheds were classified with an adapted codification, which provided the Haïtian government a precise and homogeneous hydrographical reference system for further studies.
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Submitted on : Thursday, May 28, 2020 - 5:17:16 PM
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Laurent Polidori, Maxime Claden, Romain Frelat, Mahmad Elhage, Fouzia Bendraoua, et al.. Elaboration du référentiel hydrographique d'Haïti à partir d'un MNT Aster. Revue Française de Photogrammétrie et de Télédétection, 2014, 205, pp.49-57. ⟨10.52638/rfpt.2014.3⟩. ⟨hal-02641548⟩



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