BIOSOPE
Type | Oceanographic cruise |
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Ship | L'Atalante |
Ship owner | Ifremer |
Dates | 17/10/2004 - 15/12/2004 |
Chief scientist(s) | CLAUSTRE Hervé , SCIANDRA Antoine |
LABORATOIRE D'OCÉANOGRAPHIE DE VILLEFRANCHE-SUR-MER - UMR 7093 181 chemin du Lazaret 06230 Villefranche-sur-Mer +33 (0)4 93 76 38 13 |
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DOI | 10.17600/4010100 |
Objective | The BIOSOPE (BIogeochemistry & Optics SOuth Pacific Experiment) survey's objective was to study the variability of biological, bio-geochemical and bio-optic properties of a range of trophic regimes during the austral summer in the South Pacific. These were the eutrophic area associated with the upwelling regime along the coasts of Chile; the mesotrophic regime of the Marquises islands plume which results from natural iron enrichment in the HLNC (High Nutrient Low Chlorophyll) waters of this subequatorial region; and finally the most oligotrophic area on earth, which is the center of the South Pacific gyre. This is one of the least known areas of the ocean, and has the interesting specificity of being far away from all sources of desert aerosols. The BIOSOPE survey was mainly based on observations acquired along a transect of ~8000 km, going from the Marquises Islands to Chile. The BIOSOPE project was supported by the French PROOF (biogeochemical processes and fluxes in the ocean) program. Internationally speaking, BIOSOPE falls under the SOLAS (IGBP's Surface Ocean Lower Atmosphere Study) and IMBER (Integrated Marine Biogeochemistry and Ecosystem Research) programs and is supported by three space agencies in the framework of their SeaWiFS and MODIS (NASA) and MERIS (ESA / CNES) color sensor validations. |