Características bio-ópticas y morfometría de una laguna de zona templada

Estudios Geográficos

María Cintia Piccolo¹  Vanesa Yael Bohn²  Gerardo Miguel Eduardo Perillo³ 

[1] Departamento de Geografía y Turismo, Universidad Nacional del Sur (UNS) y CONICET - Instituto Argentino de Oceanografía (IADO-CONICET);Departamento de Geografía y Turismo, Universidad Nacional del Sur (UNS);Departamento de Geología, Universidad Nacional del Sur (UNS) e Instituto Argentino de Oceanografía (IADO-CONICET)

关键词: firma espectral;    clorofila «a»;    parámetros morfométricos;    imágenes satelitales;    NDVI;    mediciones in situ;    signature spectrale;    chlorophylle «a»;    paramètres morphométriques;    imagerie satellitaire;    NDVI;    mesures in situ;   

DOI  :  

学科分类：自然科学（综合）

来源: Estudios Geograficos

【 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 fromin situmeasurements 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 2extension and showed a sub-rectangular elongated shape. The chlorophyll-a spatial distribution in the lake was modeled from the satellite image processing,in situchlorophyll-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.

【 授权许可】

Unknown