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Article

Very High-Resolution Satellite-Derived Bathymetry and Habitat Mapping Using Pleiades-1 and ICESat-2

1
ENSTA Bretagne Engineering School, 29200 Brest, France
2
Section des Sciences de la Vie et de la Terre, EPHE-PSL University, CNRS LETG, 35800 Dinard, France
3
LabEx CORAIL, BP 1013, 98729 Papetoai, French Polynesia
4
NASA, Goddard Space Flight Center, Greenbelt, MD 20771, USA
5
Espace-Dev (IRD-UM-UG-UR-UA-UNC), 34934 Montpellier, France
*
Author to whom correspondence should be addressed.
Academic Editors: Simona Niculescu, Junshi Xia and Dar Roberts
Remote Sens. 2022, 14(1), 133; https://doi.org/10.3390/rs14010133
Received: 1 November 2021 / Revised: 15 December 2021 / Accepted: 22 December 2021 / Published: 29 December 2021
Accurate and reliable bathymetric data are needed for a wide diversity of marine research and management applications. Satellite-derived bathymetry represents a time saving method to map large shallow waters of remote regions compared to the current costly in situ measurement techniques. This study aims to create very high-resolution (VHR) bathymetry and habitat mapping in Mayotte island waters (Indian Ocean) by fusing 0.5 m Pleiades-1 passive multispectral imagery and active ICESat-2 LiDAR bathymetry. ICESat-2 georeferenced photons were filtered to remove noise and corrected for water column refraction. The bathymetric point clouds were validated using the French naval hydrographic and oceanographic service Litto3D® dataset and then used to calibrate the multispectral image to produce a digital depth model (DDM). The latter enabled the creation of a digital albedo model used to classify benthic habitats. ICESat-2 provided bathymetry down to 15 m depth with a vertical accuracy of bathymetry estimates reaching 0.89 m. The benthic habitats map produced using the maximum likelihood supervised classification provided an overall accuracy of 96.62%. This study successfully produced a VHR DDM solely from satellite data. Digital models of higher accuracy were further discussed in the light of the recent and near-future launch of higher spectral and spatial resolution satellites. View Full-Text
Keywords: bathymetry; Mayotte; marine habitat; coral reefs; ICESat-2; Pleiades-1; LiDAR; VHR multispectral imagery bathymetry; Mayotte; marine habitat; coral reefs; ICESat-2; Pleiades-1; LiDAR; VHR multispectral imagery
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MDPI and ACS Style

Le Quilleuc, A.; Collin, A.; Jasinski, M.F.; Devillers, R. Very High-Resolution Satellite-Derived Bathymetry and Habitat Mapping Using Pleiades-1 and ICESat-2. Remote Sens. 2022, 14, 133. https://doi.org/10.3390/rs14010133

AMA Style

Le Quilleuc A, Collin A, Jasinski MF, Devillers R. Very High-Resolution Satellite-Derived Bathymetry and Habitat Mapping Using Pleiades-1 and ICESat-2. Remote Sensing. 2022; 14(1):133. https://doi.org/10.3390/rs14010133

Chicago/Turabian Style

Le Quilleuc, Alyson, Antoine Collin, Michael F. Jasinski, and Rodolphe Devillers. 2022. "Very High-Resolution Satellite-Derived Bathymetry and Habitat Mapping Using Pleiades-1 and ICESat-2" Remote Sensing 14, no. 1: 133. https://doi.org/10.3390/rs14010133

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