P273 Reliable Imaging of Subseismic Objects by Means of Focusing of Seismic Scattering Energy V.A. Pozdnyakov* (KrasnoyarskGeofizika) SUMMARY The method of Focusing Transformation developed before for imaging scatterers/diffractors in 2D situations modified for 3D heterogeneous media and is applied for mapping of 3D cracked areas decompression areas and so on within consolidated granitoid subsurface block in some area in East Siberia. This block is chosen as one of the possible sites for subsurface nuclear waste deposit. The approach bases on the use of asymmetric samples from multi offset data in order to avoid regular reflections and to concentrate on scattered/diffracted


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