Attacking localized high amplitude noise in seismic data - A method for AVO compliant noise attenuation

Summary The method of time-frequency adaptive noise suppression, or T-FANS, is designed to isolate and attenuate localized highamplitude noise in seismic data. By “localized” we mean not only that the noise has a limited range in the space and time domain but also in the frequency domain. Strong ground roll energy is the most common noise of this type. Agreat number of applications to seismic data from different areas have shown that T-FANS is very effective at attacking such localized noise. T-FANS also preserves reflection signal amplitudes well. This makes T-FANS more appealing in terms of p roducing prestack gathers for amplitude sensitive data analyses, such as AVO inversion and analysis.