Uso de atributos GPR para interpretação estratigráfica: um estudo de caso utilizando dados de alta resolução com frequência de 200 MHz na região costeira de Grumari, RJ

Abstract

The interpretation of GPR data frequently focuses on studying the trace amplitude atribute. Accordingly, interpreter attempt to indentify the main stratigraphic horizons based on subjective assessments. On the other hand, trace atributes give descriptive and quantitative parameters on the same scale as the original GPR data, which can be shown Much like the trace amplitude. In the present paper, we demonstrate the advantages of using atributes to interpret high-resolution 200 MHz GPR fixed-offset data acquired in the Grumari coastal region. The use of three selected atributes allowed the recognition of masked features in original GPR data and contributed to highlighting the reflections continuity and thus making it easier to map the high-order stratigraphic features. We indentified main stratigraphic horizons associated with the sea-level changes of the strandplain stratigraphic Evolution of Grumari coastal plain