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acoustic impedance

1. n. [Geophysics]

The product of density and seismic velocity, which varies among different rock layers, commonly symbolized by Z. The difference in acoustic impedance between rock layers affects the reflection coefficient.

See: acoustic impedance section,  acoustic transparency,  amplitude anomaly,  bright spot,  density contrast,  dim spot,  polarity standard,  reflector

Display of acoustic impedance, traces, well logs and a zero-phase wavelet
Display of acoustic impedance, traces, well logs, and a zero-phase wavelet.