Retrieval total suspended substance concentration of Three Gorges based on CHRIS/PROBA remote sensing images

摘要

The Three Gorges Reservoir is the largest water resource project in west China. With water environment change greatly, water quality of the Three Gorges Reservoir needs monitoring urgently. With the properties of high spatial resolution, multi-angle observation and hyperspectral imagery, CHRIS offers a precious data resource for monitoring water quality. We apply CHRIS imagery to detect total suspended substance concentration of the Three Gorges. The method is simplified bio-optic model. The results showed the distribution total suspended substance concentration in the Three Gorges at 17th April of 2007, which agree with the actual situation. The total suspended substance concentrations retrieved by the near-infrared method are quite close to the measured data. This study could be helpful to monitor water quality with hyperspectral remote sensing imagery just having near-infrared channels.