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The attenuated Ricker wavelet basis for seismic trace decomposition and attenuation analysis
Authors:Xuebing Zhang  Cai Liu  Xuan Feng  Bonan Li  Kexin Li  Qin You
Institution:1. School of Geomatics and Prospecting Engineering, Jilin Jianzhu University, Changchun, 130118 China;2. College of Geo-Exploration Science and Technology, Jilin University, Changchun, 130026 China;3. Sinopec Geophysical Research Institute, Nanjing, 210014 China
Abstract:The widely used wavelets in the context of the matching pursuit are mostly focused on the time–frequency attributes of seismic traces. We propose a new type of wavelet basis based on the classic Ricker wavelet, where the quality factor Q is introduced. We develop a new scheme for seismic trace decomposition by applying the multi-channel orthogonal matching pursuit based on the proposed wavelet basis. Compared with the decomposition by the Ricker wavelets, the proposed method could use fewer wavelets to represent the seismic signal with fewer iterations. Besides, the quality factor of the subsurface media could be extracted from the decomposition results, and the seismic attenuation could be compensated expediently. We test the availability of the proposed methods on both synthetic seismic record and field post-stack data.
Keywords:Time-frequency decomposition  Orthogonal matching pursuit  Seismic Q-compensation  Q-values
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