info:eu-repo/semantics/article
Estimation of chlorophyll-a concentration using Landsat 8 in the Cassaffousth reservoir
Fecha
2019-11Registro en:
Ledesma, María Micaela; Bonansea, Matias; Ledesma, Claudia; Rodríguez, Claudia; Carreño, Joel; et al.; Estimation of chlorophyll-a concentration using Landsat 8 in the Cassaffousth reservoir; IWA Publishing; Water Science and Technology: Water Supply; 19; 7; 11-2019; 2021-2027
1606-9749
1607-0798
CONICET Digital
CONICET
Autor
Ledesma, María Micaela
Bonansea, Matias
Ledesma, Claudia
Rodríguez, Claudia
Carreño, Joel
Pinotti, Lucio Pedro
Resumen
The physico-chemical and biological composition of a reservoir's effluents directly influences water quality. The values of variables such as high values of concentrations of chlorophyll-a (Chl-a) are indicators of pollution. The objective of this work was to monitor the trophic status and water quality of the Cassaffousth reservoir (Córdoba, Argentina) through the development of statistical models based on field data and satellite information. During 2016 and 2017, samples were taken bimonthly. Seven sampling sites were selected and physico-chemical and biological parameters were assessed. By using regression techniques, Landsat 8 information was related with field data to construct and validate a statistical model to determine the distribution of Chl-a in the reservoir (R2 = 0.87). The generated algorithm was used to generate maps which contained information about the dynamics of Chl-a in the entire reservoir. Remote sensing techniques can be used to expand the knowledge of the dynamics of the Cassaffousth reservoir. Moreover, these techniques can be used as baselines for the development of an early warning system for this and other reservoirs in the region.