Using the Band Ratio Approach, FULL-PIXEL (SAM and SFF) and SUB-PIXEL (MF and SID) Methodologies to Discover Areas With Alteration Using the Aster Sensor: A Case Study in North Westen Iran - Sivardaghi Area. Nexo Revista Científica 2023, 36 (03), 422-438. https://doi.org/10.5377/nexo.v36i03.16464.