Publications

Interferometry seismic is a virtual source reconstruction technique. It uses a correlation method in both active and passive seismic data. This technique is applied by correlating traces from recorded seismic data. The vibration source in interferometry seismic data recording can be an active source such as dynamite or a passive source such as from human or natural activities. This research uses both synthetic and real data from active and passive sources. Synthetic seismic interferometry was recorded by using 24 receiver geophones for 10 minutes and the shot position is below the surface. Real data was derived from measurement in a mud volcano environment by assuming that vibration sources come from mud movement activity in the subsurface and from an active source on the surface. Virtual shot receiver is generated by wave field propagation reconstruction with cross-correlation technique. It is derived from synthetic and real data which resulted by passive source. Then, real seismic data, synthetic seismic data, and virtual shot receiver are processed using seismic reflection data processing work flow. Seismic stack from active source real data has poor subsurface image because of seismic shot gathers resulting from field acquisition that has low quality caused by dry soil. Nevertheless, interferometry seismic section has a lower resolution compared to seismic data with active source. It is because the cross-correlation technique cannot fully reconstruct wave field propagation. The advantage of interferometry technique recording is that this technique does not need active source that wastes significant time and resources. While seismic reflection can give a better image because of this technique’s reflection wave recording and spatial sampling of wave propagation.