Title :
Bayesian estimation in seismic migration
Author :
Pitas, Ioannis ; Venetsanopoulos, Anastasios N.
Author_Institution :
Electr. Eng., Thessaloniki Univ., Greece
fDate :
2/1/1988 12:00:00 AM
Abstract :
Seismic migration is a technique widely used in seismic oil exploration for wavefield reconstruction and for imaging the geometrical distribution of the reflection surfaces within the Earth from the seismic data recorded on the Earth surface. These data are usually corrupted by noise (white noise, surface waves, multiple reflections, etc.) that degrades the result of the migration. Another factor which influences the migration is the inadequate knowledge of the distribution of the acoustic wave propagation velocity in the subsurface of the Earth. The authors use estimation theory techniques to find the MAP (maximum a posterior) estimate of the wave propagation velocity and the geometrical distribution of the subsurface reflector points
Keywords :
acoustic signal processing; acoustic wave propagation; acoustic wave velocity; geophysical prospecting; geophysical techniques; seismology; Bayesian estimation; Earth interior; Earth surface; acoustic wave propagation velocity; estimation theory; geometrical distribution; geophysical exploration; imaging; maximum a posteriori estimate; multiple reflections; reflection seismology; reflection surfaces; seismic data; seismic data corruption; seismic migration; seismic oil exploration; subsurface reflector points; surface waves; wavefield reconstruction; white noise; Acoustic noise; Acoustic propagation; Acoustic reflection; Bayesian methods; Earth; Image reconstruction; Petroleum; Surface acoustic waves; Surface reconstruction; White noise;
Journal_Title :
Acoustics, Speech and Signal Processing, IEEE Transactions on