Velocity Estimation by Wave Front Synthesis |
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Page 7
... geophone positions is constant . A single " experiment " is then performed which involves recording a seismogram at each geophone position ... geophone . Two other descriptive coordinates can be introduced by the relations , f = g - S - s + ...
... geophone positions is constant . A single " experiment " is then performed which involves recording a seismogram at each geophone position ... geophone . Two other descriptive coordinates can be introduced by the relations , f = g - S - s + ...
Page 11
... geophone gather . This is seismic data in ( f , t ) coordinates for a constant geophone position , g ( This would be data along any line parallel to the S axis in Figure 2.4 . ) Let us now instead of visualizing a collection of ray ...
... geophone gather . This is seismic data in ( f , t ) coordinates for a constant geophone position , g ( This would be data along any line parallel to the S axis in Figure 2.4 . ) Let us now instead of visualizing a collection of ray ...
Page 26
... geophone gathers . Rather than using the S or the 8 coordinate depending on the sign of P , we introduce the coordinate x ' which specifies the geophone position when the slant stack is done over a common geophone gather , but the shot ...
... geophone gathers . Rather than using the S or the 8 coordinate depending on the sign of P , we introduce the coordinate x ' which specifies the geophone position when the slant stack is done over a common geophone gather , but the shot ...
Contents
Coordinate Systems and Data Displays | 7 |
Reverse Illumination | 41 |
Velocity Estimation for Diffracting Earth Models | 71 |
2 other sections not shown
Common terms and phrases
acoustic velocity angle-dependent reflection coefficient anti-aliasing window approximate Chapter Claerbout CMP stacked section common geophone gather common midpoint gather common midpoint stack common shot gather constant velocity medium data display depth depth-dependent velocity diffracted Doherty downgoing plane wave downgoing wave downward continuation effect and aliasing energy Fresnel zone ft/sec function geometry geophone position Geophysics hyperbolic event hyperbolic trajectories illumination angle interpretation coordinates lateral velocity variations line ray path msec/ft noise ratio non-zero p-gather p-section partial coherency stack path diagram phase velocity plane wave front plane wave stack point scatterer propagation angle ray parameter region root mean square sampling seismic seismograms shot or geophone shows signal to noise slant frames slant plane wave slant sections slant stack slope standard coordinates straight line ray strong lateral velocity subsurface reflector summation trajectory synthesize tangency trace upcoming wave vertical wave equation wave field waveform ΔΕ