Assessment of zincum(Zn) and plumbum(Pb) concentration in estuary water using hyperion image

Estuaries are biologically productive and diverse coastal areas that are also vital to commerce, transportation, and recreation activities. In this paper, we demonstrate the potential of the hyperspectral data for monitoring heavy metal pollution such as zincum(Zn) and plumbum(Pb) in estuary. A series of methods were used to manage the basical spectral reflectance and the sensitive bands for estimation of above parameters. The hyperspectral data were resampled by Gauss function to simulate Hyperion reflectance. Quantitative models were presented to simulate the amount of Zn and Pb concentration in estuary water according to the chosen largest value of R² between the experimental amount of Zn and Pb concentration and the reflectance on the sensitive Hyperion bands. The factors of R₅₉₄/R₈₉₆ and (R₅₆₄+R₄₅₄)/ (R₅₆₄+R₄₅₄) were found best relativity to establish the models for Pb and Zn concentration, respectively. The validation of these models showed that the relative RMSE values were basically less than 35%, which indicating that Hyperion imagery as a bench-mark for moving towards operational use of RS-related technologies that, integrated with traditional survey program, could provide useful information to implement the dynamic monitoring of heavy metal pollution in estuary.