Abstract

This paper derives a scalogram formula of seismic wave in wavelet domain from the wavelet theory and the propagating equation of seismic wave in an anelastic medium. From the scalogram formula present a method for estimating seismic attenuation based on time-scale map and define the centroid of scale for characterizing attenuation as a new seismic attribute. A relationship between quality factor of propagation medium and centroid of scale is derived. Usually absorption related anomalies on seismic data are very important and usually are attributed to the presence of hydrocarbon reservoir and/or fault zones.