Monitoring of wastewater discharged into the Callao bay using Landsat images (1985-2015)

Authors

  • Germán Velaochaga Instituto del Mar del Perú
  • Carlos Paulino Rojas Instituto del Mar del Perú
  • Han Xu Instituto del Mar del Perú
  • Edward Alburqueque Instituto del Mar del Perú

Keywords:

Wastewater, Callao bay, Landsat images, 1985-2015

Abstract

Landsat images were processed from 1985 to 2015 between the Rimac and Chillon rivers, in order to monitor and identify the suspended solids originated by the waste collectors and landfills located on the aforementioned rivers. An increase in temperature of up to 2 °C was observed in areas with a high concentration of waste through the visible and thermal band of the satellite. It was identified that after the construction of the submarine collector, differences of coloration and temperature appeared. In addition, by means of a graph of spectral signatures it was possible to verify that the residues caused an increase of reflectance between the ranges of 600-700 nanometers. A high correlation (R = 0.951) was found between the in situ and satellite temperatures, which indicates that by using the measurements of the satellite, the real values of the sea surface temperature can be accurately estimated.

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Published

2018-06-25

How to Cite

Velaochaga, G., Paulino Rojas, C., Xu, H., & Alburqueque, E. (2018). Monitoring of wastewater discharged into the Callao bay using Landsat images (1985-2015). Boletin Instituto Del Mar Del Perú, 33(1), 5–12. Retrieved from https://revistas.imarpe.gob.pe/index.php/boletin/article/view/47

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