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FDwave3D: a MATLAB solver for the 3D anisotropic wave equation using the finite-difference method |
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| Authors: | Li Lei Tan Jingqiang Zhang Dazhou Malkoti Ajay Abakumov Ivan Xie Yujiang |
| Institution: | 1.Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring (Central South University), Ministry of Education, Changsha, 410083, China ;2.Hunan Key Laboratory of Nonferrous Resources and Geological Hazard Exploration, Changsha, 410083, China ;3.School of Geosciences and Info-Physics, Central South University, Changsha, 410083, China ;4.Tata Institute of Fundamental Research, Mumbai, 400005, India ;6.Geophysics Section, Earth Science Department, Freie Universit?t Berlin, 12249, Berlin, Germany ;7.Ocean and Earth Science, University of Southampton, Southampton, SO14 3ZH, UK ; |
| Abstract: | Seismic modeling plays an important role in geophysics and seismology for estimating the response of seismic sources in a given medium. In this work, we present a MATLAB-based package, FDwave3D, for synthetic wavefield and seismogram modeling in 3D anisotropic media. The seismic simulation is carried out using the finite-difference method over the staggered grid, and it is applicable to both active and passive surveys. The code package allows the incorporation of arbitrary source mechanisms and offers spatial derivative operators of accuracy up to tenth-order along with different types of boundary conditions. First, the methodological aspects of finite-difference method are briefly introduced. Then, the code has been tested and verified against the analytical solutions obtained for the homogeneous model. Further, the numerical examples of layered and overthrust models are presented to demonstrate its reliability. |
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