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He Binghong, Wu Guochen. 2015: The seismic forward modeling using Born approximation equation based on rheological body. Acta Seismologica Sinica, 37(4): 661-677. DOI: 10.11939/jass.2015.04.012
Citation: He Binghong, Wu Guochen. 2015: The seismic forward modeling using Born approximation equation based on rheological body. Acta Seismologica Sinica, 37(4): 661-677. DOI: 10.11939/jass.2015.04.012
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The seismic forward modeling using Born approximation equation based on rheological body

  • School of Geosciences, China University of Petroleum, Shandong Qingdao 266580, China

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  • Received Date: March 24, 2015
  • Revised Date: May 25, 2015
  • Published Date: June 30, 2015
    Graphical Abstract
    • Abstract
  • The conventional τ method assumes that the stress relaxation time is approximately equal to the strain delay time, leading to the constant Q model with low precision. In this study, an improved τ method is proposed by an accurate equation of Q value based on generalized rheological body so as to solve the parameters of constant Q model. According to the seismic wave scattering theory, the first-order Born approximation equation in viscoacoustic media is derived based on generalized rheological body and then the first-order Born approximation of stress-velocity equation is obtained for the viscoacoustic media with convolutional perfect matched layer (CPML) boundary. The wave fields and records are compared through numerical simulation by full wave equation, first-order Born approximation equation and one-way wave equation. And it is also discussed that the precision of travel time and amplitude of the seismic wave obtained by the viscoacoustic first-order Born approximation equation with velocity perturbation and Q perturbation.
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    • References (29)
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