SEGJ Technical Conference


An example of Seismic Interferometry using earthquakes


Abstract
We observed many earthquake events during a seismic reflection survey using vibrators. In order to test the applicability of Seismic Interferometry, we applied Seismic Interferometry method (Crosscorrelation of pairs of traces) to those records. The events caused by earthquakes are quite coherent, or we cannot select incoherent events, and the slowest apparent velocity is about 5.8km/s. From these dataset, we can only create events with fast apparent velocity. This process could not produce shot gathers that we can effectively conduct velocity analysis. To produce slower events by Seismic Interferometry, it will need energy sources at surface and the long duration observation.