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What (who) is amplitude variation with offset - definition

TERM FOR REFERRING TO THE DEPENDENCY OF THE SEISMIC ATTRIBUTE, AMPLITUDE, WITH THE DISTANCE BETWEEN THE SOURCE AND RECEIVER

Amplitude Variation with Offset; Amplitude Versus Offset; Amplitude variation with offset

Amplitude versus offset

In geophysics and reflection seismology, amplitude versus offset (AVO) or amplitude variation with offset is the general term for referring to the dependency of the seismic attribute, amplitude, with the distance between the source and receiver (the offset). AVO analysis is a technique that geophysicists can execute on seismic data to determine a rock's fluid content, porosity, density or seismic velocity, shear wave information, fluid indicators (hydrocarbon indications).

https://en.wikipedia.org/wiki/Amplitude_versus_offset

variation

WIKIMEDIA DISAMBIGUATION PAGE

Variations; Varied; Varying; Variation (disambiguation); Viccitude; Variations (album); Variation (combinatorics); Variations (Combinatorics); Variation (Combinatorics)

¦ noun

1. a change or slight difference in condition, amount, or level.

(also magnetic variation) the angular difference between true north and magnetic north at a particular place.

2. a different or distinct form or version.

Music a new but still recognizable version of a theme.

Ballet a solo dance as part of a performance.

Derivatives

variational adjective

varied

WIKIMEDIA DISAMBIGUATION PAGE

Variations; Varied; Varying; Variation (disambiguation); Viccitude; Variations (album); Variation (combinatorics); Variations (Combinatorics); Variation (Combinatorics)

¦ adjective incorporating a number of different types or elements; showing variation or variety.

Derivatives

variedly adverb

Wikipedia

Amplitude versus offset

In geophysics and reflection seismology, amplitude versus offset (AVO) or amplitude variation with offset is the general term for referring to the dependency of the seismic attribute, amplitude, with the distance between the source and receiver (the offset). AVO analysis is a technique that geophysicists can execute on seismic data to determine a rock's fluid content, porosity, density or seismic velocity, shear wave information, fluid indicators (hydrocarbon indications).

The phenomenon is based on the relationship between the reflection coefficient and the angle of incidence and has been understood since the early 20th century when Karl Zoeppritz wrote down the Zoeppritz equations. Due to its physical origin, AVO can also be known as amplitude versus angle (AVA), but AVO is the more commonly used term because the offset is what a geophysicist can vary in order to change the angle of incidence. (See diagram)

https://en.wikipedia.org/wiki/Amplitude versus offset