Procesamiento de imágenes ASTER para identificar alteraciones hidrotermales en el sector norte de la cuenca Casma, subcuenca Huarmey, Perú

• Autores: Cornejo Injante, Piero, Lugo Mallqui, Astrid Zayetsy, Rojas Laura, Fiorela Noemi, Cespedes Navarro, Carlos Daniel, Rayme Caballero, Luis Alexis
• Formato: artículo
• Fecha de Publicación: 2024
• Institución: Universidad Nacional Mayor de San Marcos
• Repositorio: Revistas - Universidad Nacional Mayor de San Marcos
• Lenguaje: español
• OAI Identifier: oai:revistasinvestigacion.unmsm.edu.pe:article/26015
• Enlace del recurso: https://revistasinvestigacion.unmsm.edu.pe/index.php/iigeo/article/view/26015
• Nivel de acceso: acceso abierto
• Materia: Remote sensing; satellite images; alteration zones; casma Basin; ASTER; Sensor remoto; imágenes satelitales; zonas de alteración; cuenca Casma

Hydrothermal alterations can be identified at surface by Advanced Spaceborn Thermal Emission and Reflection (ASTER) imaging. The northern zone of the Casma Basin exhibits changes in ground coloration due to the presence of Gossans and phyllic, propylitic and argillic alterations, which are indicators of near ore deposits. Using ASTER images, alterations can be recognized by RGB Band Combination, Band Ratio Combination, Band Ratio and Principal Component Analysis. The result of these processes is the delimitation of seven areas of interest that show a higher density of different types of alteration in the same zone.