Seismic attenuation qualitative characterizing method based on adaptive optimal-kernel time–frequency representation |
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| Institution: | 1. Institute of Wave and Information, Xi''an Jiaotong University, Xi''an 710049, China;2. China National Offshore Oil Company Research Center, Beijing 100027, China;3. Institute of Geology and Geophysics, Chinese Academy of Science, Beijing 100029, China;1. Earthquake Research Institute, The University of Tokyo, Japan;2. Kansai University, Japan;3. Earthquake Research Center, Association for the Development of Earthquake Prediction, Japan;4. GNS Science, New Zealand;1. AcSIR-NGRI, Hyderabad, Andhra Pradesh, India;2. CSIR-NGRI, Hyderabad, Andhra Pradesh, India |
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| Abstract: | The main issue of seismic attenuation characterizing method based on time–frequency analyzing method is the time–frequency resolution. The adaptive optimal-kernel time–frequency representation, which has high time–frequency resolution comparing with commonly used time–frequency analyzing method, is investigated. The seismic attenuation qualitative characterizing method based on adaptive optimal-kernel time–frequency representation is proposed. The synthetic data example and 3D field-data example reveal that the proposed method can qualitatively characterize seismic attenuation, and the attenuated anomaly of this field-data example coincides with gas reservoir well. |
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