Correlation between the variations of clay content in soils and sediments and the spectral behavior of superjacent vegetation using spectir hyperspectral images. - Cibele Hummel do Amaral; Teodoro Isnard Ribeiro de Almeida; Carlos Roberto de Souza Filho; Moreno Botelho; Marcos Nopper Alves; Natasha Costa Penatti (WHISPERS, 2012)