Ground Roll Suppression Using the Radial-Wavelet Transform
Rafael Rodrigues Manenti, Lucas José A. de Almeida, Milton José Porsani · 2013
The Radial Transform rearrange the amplitudes of the seismic data, from the distance-time domain to the angle-time domain. Linear events in the distance-time domain tend to be sampled as a vertical event in the angle-time domain, while the reflections maintain its original shape. The Wavelet Transform decomposes the original shot-gather into different sub-bands, whose coefficients are differently oriented. Therefore, vertical events, like the ground roll, are isolated from the horizontal events (reflection). This paper proposes a method for ground roll suppression based on the joint implementation of these two transforms, named the Radial-Wavelet Transform.