摘要：2D seismic multichannel survey has been carried out by Marine Geological Institute to interpret imaging and sub-surface geological information in the Flores Sea. Seismic data processing starts from pre-processing until migration stage. Migration is an important stage in the seismic processing, because at this stage the effects of diffraction and oblique reflectors caused by fault, salt domes, wedging, etc. will be repositioned to the actual points. One example of diffraction effects can be seen on the seismic section of a conventional stacking that have not migrated, i.e. resulting in an apparent bowtie reflector. Geologists find difficulties in interpreting geological information from diffracted seismic section, so it needs further processing to overcome the effects. By using Kirchhoff method and carried out during the Pre-Stack Time Migration (PSTM), this method turns out to produce migrated seismic section which is much better than conventional stacked one. This is due to the Kirchhoff method suppressed the identified diffraction effects, so that the geologist can interpret geological structure of the resulting migrated seismic section of the Flores Sea.
其他摘要：Survei seismik 2D multichannel dilaksanakan oleh Pusat Penelitian dan Pengembangan Geologi Kelautan untuk mengetahui gambaran serta informasi geologi bawah permukaan Laut Flores. Pengolahan data seismik dimulai dari pre-processing sampai tahap migration.
关键词：2D seismic multichannel;diffraction;Pre-Stack Time Migration (PSTM);Kirchhoff method
其他关键词：seismik 2D multikanal;difraksi;Pre-Stack Time Migration (PSTM);metode Kirchhoff
