Publications des scientifiques de l'IRD

Minghelli-Roman A., Dupouy Cécile. (2013). Influence of water column chlorophyll concentration on bathymetric estimations in the lagoon of New Caledonia, using several MERIS images. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 6 (2), p. 739-745. ISSN 1939-1404.

Titre du document
Influence of water column chlorophyll concentration on bathymetric estimations in the lagoon of New Caledonia, using several MERIS images
Année de publication
2013
Type de document
Article référencé dans le Web of Science WOS:000319278000028
Auteurs
Minghelli-Roman A., Dupouy Cécile
Source
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2013, 6 (2), p. 739-745 ISSN 1939-1404
An estimation of bathymetry in the optically complex lagoon of New Caledonia was performed from multispectral satellite images. Bathymetric estimation was obtained with Medium Resolution Imaging Spectrometer (MERIS) images acquired at different dates. The method is based on the rotation of a pair of spectral bands (red and green bands). One of the resulting images is only depth-dependent when the other is reflectance-dependent. A comparison was made with a compilation of bathymetric data from Institut de Recherche pour le Developpement (IRD) Noumea measurements. This study shows the influence of the variation of water composition, and then of the diffuse attenuation, on bathymetric results. The variation of chlorophyll concentration, correlated with variation of diffuse attenuation, explains the error of the estimation map. The results show that this method remains valid under a low (<1 mg . m(-3)) and constant concentration (<10% of variation) of chlorophyll to limit the variation of RMSE in the image on the bathymetric estimation (<15.5%).
Plan de classement
Limnologie physique / Océanographie physique [032] ; Télédétection [126]
Description Géographique
NOUVELLE CALEDONIE
Localisation
Fonds IRD [F B010060365] ; Nouméa
Identifiant IRD
fdi:010060365
Contact