Antunes, Alex FranciscoSilva Júnior, José Romero dos Santos2025-08-152025-08-152025-04-28SILVA JÚNIOR, José Romero dos Santos. Utilização de técnicas de decomposição espectral, condicionamento e atributos sísmicos para realçar falhas em um dado sísmico 3D localizados na região de Estreito/Alto do Rodrigues. Orientador: Dr. Alex Francisco Antunes. 2025. 41f. Dissertação (Mestrado em Geodinâmica e Geofísica) - Centro de Ciências Exatas e da Terra, Universidade Federal do Rio Grande do Norte, Natal, 2025.https://repositorio.ufrn.br/handle/123456789/65167The application of spectral decomposition and structurally oriented filtering techniques proved effective in enhancing the structural interpretation of seismic data. This study aimed to optimize the seismic bandwidth and improve the signal-to-noise ratio in a 3D seismic volume from the Estreito/Alto do Rodrigues field, located in the central-southern portion of the Potiguar Rift. The adopted methodology involved segmenting the seismic data into overlapping frequency sub-bands (15–85 Hz), applying the Dip Steering Median Filter (DSMF), and using seismic attributes such as similarity, pseudo-relief, Fault Likelihood (FL), and Thinned Fault Likelihood (TFL) to improve fault identification. As expected due to seismic attenuation, lower-frequency bands allow for the visualization of deeper structures in the sections, while higher-frequency bands exhibit more segmented reflectors, which can hinder seismic interpretation. The combined use of spectral filtering and attribute analysis enabled a more detailed interpretation of fault-related structures, including a flower structure, a possible inversion structure, and major faults trending northeast-southwest.pt-BRAcesso AbertoDecomposição espectralAtributos sísmicosFiltragem estruturalDetecção de falhasBacia PotiguarmasterThesisCIENCIAS EXATAS E DA TERRA::GEOCIENCIAS