Water depth inversion from satellite dataset

Adrien Poupardin (1) , Marcello de Michele (1) , Daniel Raucoules (1) , Déborah Idier (1)

1 BRGM - Bureau de Recherches Géologiques et Minières (BRGM)

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).

Mots clés: near shore bathymetry; satellite dataset; water depth inversion; depth 5 m to 30 m; SPOT-5; Waves; Celerity; Wavelength; 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

Domaines: Sciences de la Terre

Adrien Poupardin, Marcello de Michele, Daniel Raucoules, Déborah Idier. Water depth inversion from satellite dataset. IGARSS 2014 - 2014 IEEE International Geoscience and Remote Sensing Symposium, Jul 2014, Quebec City, France. pp.2277-2280, ⟨10.1109/IGARSS.2014.6946924⟩. ⟨hal-03663903⟩