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Communication dans un congrès
Water depth inversion from satellite dataset
Abstract : Within an effort to estimate near-shore bathymetry from satellite scenes, a method based on wave celerity and wavelength estimation is developed. These wave characteristics are extracted from SPOT-5 panchromatic and multispectral scenes. The method allows us to associate the wavelength and the celerity of the same detected wave and to estimate the water depth from the dispersion relation. This technique is tested on Saint Pierre area (La Reunion Island). Results are compared to in-situ measurements and show a reasonable agreement in terms of morphology and a mean absolute bathymetric error inferior to 30 % in intermediate depths (5-30 m range).
Keywords :
Estimation
Sea measurements
Wavelet transforms
Satellites
Optical sensors
Adaptive optics
Optical imaging
bathymetry
dispersion relations
oceanographic techniques
La Reunion Island
Saint Pierre area
dispersion relation
multispectral scenes
SPOT-5 panchromatic scenes
wavelength estimation
wave celerity
near shore bathymetry
satellite dataset
water depth inversion
depth 5 m to 30 m
SPOT-5
Waves
Celerity
Wavelength
https://hal-brgm.archives-ouvertes.fr/hal-03663903
Contributeur : Frédérique Couffignal Connectez-vous pour contacter le contributeur
Soumis le : mardi 10 mai 2022 - 15:04:54
Dernière modification le : mercredi 11 mai 2022 - 03:50:22
Contributeur : Frédérique Couffignal Connectez-vous pour contacter le contributeur
Soumis le : mardi 10 mai 2022 - 15:04:54
Dernière modification le : mercredi 11 mai 2022 - 03:50:22