Seismic multi-resolution velocity analysis in UDWT domain

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Ayazi Sara; goudarzi alireza; Kourki Meisam

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Journal Paper

Paper Information

Journal: JOURNAL OF RESEARCH ON APPLIED GEOPHYSICS Year:2018 | Volume:3 | Issue:2 Page(s): 203-215

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Information Journal Paper

Title

Seismic multi-resolution velocity analysis in UDWT domain

Author(s)

Ayazi Sara | goudarzi alireza | Kourki Meisam | Issue Writer Certificate

Keywords

Velocity Analysis

Spectrum

Coherency

Undecimated Discrete Wavelet

Transform (UDWT)

Abstract

Different methods are used for seismic Velocity Analysis, including spectral analysis based on semblance, which is a reliable way to estimate the stacking velocity. The proposed method in this research is superior over other seismic Velocity Analysis methods because in the proposed method, the wave due to the absorption of the earth makes a reduction of the frequency content of the source in time, and results in poor temporal resolution. In this paper, the Velocity Analysis performed in the wavelet domain using Undecimated Discrete Wavelet transform (UDWT). Random noise is often placed in high-frequency sub-bands and their effect leads to a reduction in Coherency than other sub-bands. In this way, data analyses to high-pass and low-pass sub-bands and Velocity Analysis at any scale are performed using discrete wavelet transform and scaling filters. A Comparison of the obtained results showed that the spectral analysis of the velocity in the wavelet domain increases the accuracy of the Velocity Analysis in each band of frequencies.

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APA: Copy

Ayazi, Sara, goudarzi, alireza, & Kourki, Meisam. (2018). Seismic multi-resolution velocity analysis in UDWT domain. JOURNAL OF RESEARCH ON APPLIED GEOPHYSICS, 3(2 ), 203-215. SID. https://sid.ir/paper/268608/en

Vancouver: Copy

Ayazi Sara, goudarzi alireza, Kourki Meisam. Seismic multi-resolution velocity analysis in UDWT domain. JOURNAL OF RESEARCH ON APPLIED GEOPHYSICS[Internet]. 2018;3(2 ):203-215. Available from: https://sid.ir/paper/268608/en

IEEE: Copy

Sara Ayazi, alireza goudarzi, and Meisam Kourki, “Seismic multi-resolution velocity analysis in UDWT domain,” JOURNAL OF RESEARCH ON APPLIED GEOPHYSICS, vol. 3, no. 2 , pp. 203–215, 2018, [Online]. Available: https://sid.ir/paper/268608/en

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