Ground roll attenuation using 2D Wavelet transform
Reinaldo Mozart Da Gama e Silva, Marco Antônio Cetale Santos · 2017
Ground roll is in a list of several coherent noises in land seismic aquisition, producing records with low-frequency and high amplitude that can hide almost entirely near-surface events. Hence, a variety of processing techniques, such as the Fourier transform, uses the frequency filtering techniques to supress this persistent noise. As an alternative to them, the Wavelet transform provides a signal analysis in time and frequency domain, giving better resolution and analysis of the entire input data. This article presents a case study with a real shot-gather and ground roll supression using the Wavelet transform in two dimensions and the analysis of this technique.