Multi-scale tau-p spectrum and its application

In this paper, based on wavelet transform and t-p transform, a new represen tation of seismic data, multi-scales t-p spectrum is presented, which is ob tained through transformation of seismic data from. (t,x) to ( t,p,a) or (t ,p,f) domain. A method of filtering or wavefield separation in (t,p,a) doma in is given. Comparing with traditional (t,p) filtering, this new method ha s several advantages such as easier wavefield separation, higher precision and stronger denoise performance if a proper wavelet function is chosen. Bo th the synthetic seismogram and the field data tests illustrate its effecti veness for this method.