Wavelet transform and its application in data processing and interpretation of seismic reflection/refraction profile

In this paper, the general principle of the wavelet transform has been introduced and the wavelet transform has been applied to the data processing of seismic reflection/refraction profile with a set of related programs developed by us. The research shows that the wavelet transform is effective for the data processing. By modeling, we know that the resolution of the seismic signals can be improved from 1/2-1/4 wavelength to better than 1/6 wavelength. Using wavelet transform to the data obtained from Xayar-Burjing geoscience transect, we have obtained a detailed structure of the crust mantle transitional zone which is composed of 7-8 thin layers of high and low velocity alternatively with low average velocity and total thickness of 20 km. The crust mantle transitional zones of the northern margin of the Tarim basin and the Junggar basin do not possess this feature. They are completed mainly by first order discontinuity. The detailed structure of the Tianshan orogenic belt and the Junggar basin and their differences provide an important evidence for the model "Lithospheric Subduction with Intrusion Layers in Crust" of the Tianshan orogenic belt.