Wavelet Transform and its Application in Data Processing and Interpretation of Seismic Reflection/Refraction Profile
Junmeng Zhao, Ji Tang, Haijiang Zhang, Chengke Zhang, Jian Yang, Shi‐Xu Jia, Jian-shi Zhang, Zhuoxin Yang · Chinese Journal of Geophysics · 2000
Abstract In this paper, the general principle of wavelet transform is introduced and the wavelet transform is 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 increased 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 with high and low velocity alternatively, low average velocity and total thickness of 20 km. While 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 the differences between the two provide important evidence for the creation of the model "lithospheric subduction with intrusion layers in crust" of the Tianshan orogenic belt.