Santecchia, G.S.; Revollo Sarmiento, G.N.; Genchi, S.A.; Vitale, A.J.; Delrieux, C.A. Assessment of Landsat-8 and Sentinel-2 Water Indices: A Case Study in the Southwest of the Buenos Aires Province (Argentina). J. Imaging2023, 9, 186.
Santecchia, G.S.; Revollo Sarmiento, G.N.; Genchi, S.A.; Vitale, A.J.; Delrieux, C.A. Assessment of Landsat-8 and Sentinel-2 Water Indices: A Case Study in the Southwest of the Buenos Aires Province (Argentina). J. Imaging 2023, 9, 186.
Santecchia, G.S.; Revollo Sarmiento, G.N.; Genchi, S.A.; Vitale, A.J.; Delrieux, C.A. Assessment of Landsat-8 and Sentinel-2 Water Indices: A Case Study in the Southwest of the Buenos Aires Province (Argentina). J. Imaging2023, 9, 186.
Santecchia, G.S.; Revollo Sarmiento, G.N.; Genchi, S.A.; Vitale, A.J.; Delrieux, C.A. Assessment of Landsat-8 and Sentinel-2 Water Indices: A Case Study in the Southwest of the Buenos Aires Province (Argentina). J. Imaging 2023, 9, 186.
Abstract
We performed the accuracy assessment of three different Normalized Difference Water Indices (NDWIs) in water bodies during April 2019, a period in which floods occurred in a large proportion of the Southwest of the Buenos Aires Province (Argentina). The accuracy of the estimations using spaceborne medium-resolution multi-spectral imaging, and the reliability of three NDWIs to highlight shallow water features in satellite images, was evaluated using a high resolution airbone imagery as ground-truth. It is shown that these indices computed using Landsat 8 and Sentinel-2 imagery are only loosely correlated to the actual flooded area in shallow waters. Indeed, NDWI values vary significantly depending on the satellite mission used and the type of index computed.
Keywords
High and medium multi-spectral imaging (Landsat 8, Sentinel-2); Airborne imagery; Normalized Difference Water Index; Geographical measurements
Subject
Environmental and Earth Sciences, Remote Sensing
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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