IAFE   05512
INSTITUTO DE ASTRONOMIA Y FISICA DEL ESPACIO
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Bio-optical properties of the San Jorge Gulf (Argentina)
Autor/es:
LAROUCHE, P.; WILLIAMS, G.; DOGLIOTTI, A.I.
Lugar:
Victoria
Reunión:
Conferencia; Ocean Optics XXIII Conference; 2016
Resumen:
The San Jorge Gulf is a region of high ecological importance where several industrial fisheries exploit species like hake (Merluccius hubbsi), the Argentine red shrimp (Pleoticus muelleri) and the Patagonian scallop (Zygochlamys patagonica). In this region phytoplankton is known to grow in patches which are often related to bathymetric or oceanographic features such as capes, upwelling and frontal areas that drive the renewal of nutrients in the surface layer. Although remote sensing is a key tool to monitor such a large ecosystem it is necessary to validate operational ocean color algorithms and build adapted ones if needed. Inherent optical properties and chlorophyll-a in the surface layer of the area were measured in February 2014. For this set of data, a match-up analysis showed a good performance of the MODIS OC3v5 algorithm (r=0.89, RPD=25.77%, n=7). The overestimation could be related to the dominance of CDOM (>48%) to the total non-water absorption coefficient. Finally, the strong spatial variability of the measured parameters was related to a tidal front in the south of the gulf.