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deleted an erroneous sentence. Whose behaviour? Dispersion is variation of VELOCITY with frequency. Materials with finite Q are dispersive because of causality principle, not because Q depends on frequency. |
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:<math>Q = 2{\pi}\left ( \frac{E}{{\delta}E} \right )</math>
where <math>\frac{{\delta}E}{E}</math> is the fraction of energy lost per cycle.<ref>Sheriff, R. E., Geldart, L. P., (1995), 2nd Edition. ''Exploration Seismology''. Cambridge University Press.</ref>
The earth preferentially attenuates higher frequencies, resulting in the loss of signal resolution as the seismic wave propagates. Quantitative [[seismic attribute]] analysis of [[amplitude versus offset]] effects is complicated by anelastic attenuation because it is superimposed upon the [[Amplitude versus offset|AVO effects]].<ref>Dasgupta, R., & Clark, R.A. (1998) Estimation of Q from surface seismic reflection data. ''Geophysics'' '''63''', 2120-2128</ref> The rate of anelastic attenuation itself also contains additional information about the lithology and reservoir conditions such as [[porosity]], saturation and [[pore pressure]] so it can be used as a useful reservoir characterization tool.<ref>Enhanced seismic Q compensation, Raji, W.O., Rietbrock, A. 2011. ''SEG Expanded Abstracts'' '''30''', 2737</ref>
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