|
|
|
|
| |
|
| |
|
| |
|
|
| Dupouy, Cécile. |
| Final conclusions are given to the study of discoloured waters as they can be observed with the NIMBUS-7 coastal zone colour scanner (CZCS) in the oligotrophic waters of the Southwestern Tropical Pacific, in the Melanesian archipelago, around New Caledonia, Vanuatu (and Tonga). An attempt was made to define, in the four CZCS channels, the reflectance properties of these blooms attributed to #Trichodesmium$, a nitrogen-fixing cyanobacterium commonly found in that region. The capacity and limitations of the CZCS sensor used in the past as well as the SPOT imager are discussed in this respect. The usefulness of past and future ocean colour satellites in identifying zones of high chlorophyll concentration and bright linear patterns is demonstrated. (Résumé... |
| Tipo: Text |
Palavras-chave: OCEANOGRAPHIE; TELEDETECTION SPATIALE; MILIEU PELAGIQUE; SATELLITE NIMBUS; CAPTEUR CZCS; CHLOROPHYLLE; DISTRIBUTION SPATIALE; CYANOBACTERIE. |
| Ano: 1992 |
URL: http://www.documentation.ird.fr/hor/fdi:35696 |
| |
|
| |
|
| |
|
|
| Dupouy, Cécile. |
| Examination of 40 processed cloud-free NIMBUS CZCS images over New Caledonia and Loyalty Islands provides a first view of the remotely sensed near-surface chlorophyll distribution. The major pattern of the phytoplankton abundance is the same as the one detected from the SURTROPAC survey : in winter, enrichment in the south of New Caledonia; in summer, extensive #Trichodesmium$ blooms in the north east of New Caledonia. Much newer is the detection of mesoscale gyres trapped on the coast, narrow island mass effects, and generally detailed observations on the small and mesoscale variability around the islands. (Résumé d'auteur) |
| Tipo: Text |
Palavras-chave: SURFACE MARINE; PHYTOPLANCTON; SATELLITE NIMBUS; CAPTEUR CZCS; CONCENTRATION. |
| Ano: 1989 |
URL: http://www.documentation.ird.fr/hor/fdi:30265 |
| |
|
|
|
