Abstract：Weathered layer absorbs seismic waves greatly. Compensation for the absorption due to weathered layer can improve resolution of seismic data. The inversion of quality factor weathered layer is an important step in absorption compensation. There are many Q-value inversion methods;but the reliability of the Q values estimated by the methods is related to seismic signal/noise ratio. None of the methods can offer reliable Qvalue in the case of low seismic signal/noise ratio. Hence we develop a new weathered-layer Q-value inversion method that considers noise. The trial results of real and theoretical data show good effect.
