SUMMARY Surface-related and internal multiples can be vital information for revealing the deep subsurface information, because the multiple wavefield can strength the illumination power towards the deeper subsurface. By applying the contrast source inversion method, I wish to produce the accurate velocity distribution and angle-dependent reflectivity of the subsurface model. ACKNOWLEDGEMENTS The authors would like to acknowledge Prof. HuiZhu Yang and Prof. YiBo Wang for their suggestions and discussions on this subject. REFERENCES [1] A. J. Berkhout. Combining full wavefield migration and full waveform inversion, a glance into the future of seismic imaging. GEOPHYSICS, 77(2012) P.S43-S50. [2] Aria Abubakar, Wenyi Hu, Tarek M. Habashy, Peter M. van den Berg, Application of the finite-difference contrast-source inversion algorithm to seismic full-waveform data. GEOPHYSICS, 74(2009) WCC47–WCC58. [3] Aria Abubakar, W Hu, P M van den Berg and T M Habashy. A finite-difference contrast source inversion method.Inverse problems, 24(2008) 065004. [4] J. Virieux, S. Operto. An overview of full-waveform inversion in exploration geophysics. GEOPHYSICS,74 (2009) P.WCC127-WCC152. [5] Wenyi Hu, Aria Abubakar, Tarek M.Habashy. Simultaneous multifrequency inversion of full-waveform seismic data. GEOPHYSICS, 74(2009) P.R1-R14. [6] A. J. Berkhout. Seismic migration, imaging of acoustic energy by wave field extrapolation, a theoretical aspects. Elsevier Press, Netherlands, 1982. [7] Peter M van Berg, Ralph E Kleinman. A contrast source inversion method. Inverse problem, 13(1997)1607-1620. [8] P M van den Berg, A L van Broekhoven, A Abubakar. Extended contrast source inversion. Inverse problem. 15(1999)1325-1344. [9] Laurent Sirgue, R.Gerhard Pratt. Efficient waveform inversion and imaging: A strategy for selecting temporal frequencies.GEOPHYSICS, 69(2004)P.231-248. [10] John Etgen, Samuel H. Gray, YU Zhang. An overview of depth imaging in exploration geophysics. GEOPHYSICS, (74)(2009)P.WCA5-WCA17. [11] Dietrich Ristow,Thomas Ruhi. Fourier finite-difference migration.GEOPHYSICS, 59(1994) P.1882-1893. [12] Aria Abubakar, Tarek M habashy. Peter M van den Berg. Dries Gisolf. The diago nalized contrast source approach: an inversion method beyond the Born approximation. Inverse problems, 21(2005)685-702.
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