Análisis espectral del Lago de Guadalupe, mediante imágenes de satélite y datos in situ

Surface temperature of the reservoir changed from 18.1 in February to 23 in September, pH varied from an alkaline condition >9 in February to a slightly acid pH of 6.8 in September. Chlorophyll a concentration confirm the eutrophication of the dam. Values higher than 5 μgl-1 indícate eutrophic conditions, while those higher than 40 μgl-1 indícate a high hypertrophic environment. In this work, chlorophyll values varied from 6.9 μgl-1 to an a hyper-trophic value of 112.4 μgl-1. Water coloration allowed for the selection of an appropriate spectral spot band. The high amount of phytoplankton in the reservoir is useful for a better satellite image interpretation. The use of remote sensed imagery helps for a better monitoring of water quality along with a suitable field work.