出版社：Consejo Superior de Investigaciones Científicas
摘要：The aim of this study was to evaluate the correlation between field sensors and sate - llite images in the bio-optical characterization of Lake Chasicó (Argentina) during the February-April 2010 period. The morphometric parameters of the body of water were obtained from in situ measurements and satellite data processing. The sensors that were used allowed spectral signatures to be acquired and then surface water characteristics were detected: turbidity, chlorophyll-a and depth variations. Results obtained from the morphometric analysis included that the lake surpassed the 50 km 2 extension and showed a sub-rectangular elongated shape. The chlorophyll-a spatial distribution in the lake was modeled from the satellite image processing, in situ chlorophyll-a data and the Normalized Difference Vegetation Index (NDVI) calculation. 53.2 % of its area showed a chlorophyll-a range between 5 and 10 g/l. Therefore, the body of water was characterized as a mesotrophic lake, during the studied period.
关键词：spectral signature;chlorophyll-a;morphometric parameters;satellite image;NDVI;in situ measurements;firma espectral;clorofila «a»;parámetros morfométricos;imágenes satelitales;NDVI;mediciones in situ;signature spectrale;chlorophylle «a»;paramètres morphométriques;imagerie satellitaire;NDVI;mesures in situ
