Dictionary:Synthetic acoustic impedance log

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A graph of acoustic impedance, velocity, or slowness (transit time) derived by inversion of seismic data and additional constraints; for synthetic velocity or slowness logs, additional density data are required. The vertical scale may be either time or depth and the data may or may not have been migrated before inversion. Also called seismic log, synthetic sonic log, G-log, saile log, Seislog. See Figure A-3 and Lindseth (1979).