1. n. [Geophysics]

A measure of the similarity of two seismic traces.

See: correlation,  phantom,  seismic trace,  semblance

2. n. [Geophysics]

The quality of two wave trains, or waves consisting of several cycles, being in phase.

See: wave

3. n. [Geophysics]

The similarity of two mathematical functions as evaluated in the frequency domain.

See: correlation

4. n. [Geophysics]

A quantitative assessment of the similarity of three or more functions, also called semblance.