| Popis: |
Based on the linear stacking principle of seismic wavefield, a general approach to the linear stacking of seismic common shot gathers and their sources is presented. It is called generalized seismic data synthesis. By using this method, different kinds of artificial synthetic seismic data gathers and sources can be obtained, such as, plane wave data gathers and sources, local plane wave (beam) data gathers and sources, and target-oriented artificial synthetic seismic data gathers and sources, according to various geological situations and requirements. The single-square-root equation can be used for the migration of artificial synthetic seismic data gathers. Different synthetic seismic data gathers have different migration characteristics, for example, plane wave data gathers with high calculation efficiency, local plane wave data gathers with good directional characteristic, target-oriented synthetic data gathers with good target-oriented characteristic. |
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