Le projet d'exploiter les ressources minérales marines profondes, qui remonte aux années 1960, est revenu au premier plan dans les années 2000, dans un contexte de course aux matières premières et de croissance rapide des économies émergentes, en particulier celle de la Chine. La mine sous-marine constitue une nouvelle frontière économique et techn...
We investigated surface carbonate sediments at 33 sites on the outer shelf and slope around New Caledonia (163°-167°E, 20°-23°S), at water depths of 75-720m. Four carbonate sedimentary facies are recognized on the basis of sediment size fractions and predominant constituents: Facies 1, encrusted grains (rhodoliths and macroids), bryozoa, and benthi...
Features on the seabed can be mapped from remote sensing multi/hyperspectral imagery, provided that their effects on the measured reflectance spectrum can be made independent of those produced by the atmosphere and water column. The nonlinear effect of water column light attenuation can then be corrected to obtain the absolute reflectance of the se...
The shallow submarine hydrothermal field of the Prony Bay (New Caledonia) discharges hydrogen- and methane-rich fluids with low salinity, temperature (
Features on the seabed can be mapped from remote sensing multi/hyperspectral imagery, provided that their effects on the measured reflectance spectrum can be made independent of those produced by the atmosphere and water column. The nonlinear effect of water column light attenuation can then be corrected to obtain the absolute reflectance of the se...
The shallow submarine hydrothermal field of the Prony Bay (New Caledonia) discharges hydrogen- and methane-rich fluids with low salinity, temperature (
