Estimation of Chlorophyll-a Concentration Using Remote Sensing Images

Document Type : Research Paper


1 Bu Ali Sina University

2 University of Tehran

3 Ilam University of Medical Sciences


Monitoring the quality of water resources and reservoirs is very important however water sampling is a very time consuming, costly and sometimes dangerous task. Satellite and aerial images from surface water could be applied to monitor water quality parameters of different water bodies effectively. In this research the possibility of estimating and monitoring chl-a concentration in Ekbatan reservoir is evaluated using Landsat 7 images. Different conversions were applied to bands reflectance and the relation between chl-a concentration with reflectance were examined and derived. Then the best model for estimating the concentration of chl-a was selected. The results of study showed that the equation based on the band ratio have the most precise estimate between all models. The value of R2Adj and SE were 0.91 and 0.04 respectively. The results show that using Landsat 7 images the concentration of chl-a could be estimated accurately.


Main Subjects

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