A method to compensate earth filtering based on wavelet packet

The Earth's filter response to seismic wave can be approximated by variable Q attenuation. A model to compensate earth filtering is developed based on the wavelet packet decomposition. According to the model, a new method to compensate earth filtering is presented. The steps of the method are: First ly, seismic wave is decomposed into different frequency bands. Then, accord ing to the model of compensate earth filtering, attenuation coefficients ar e found for each frequency component. Each wavelet packet decomposition coe fficient is divided by attenuation coefficient. Finally, seismic wave is re constructed from modified frequency components to compensate earth filterin g.