是利用振幅随偏移距变化特征分析和识别岩性和油气藏的地震勘探技术。
AVO is a seismic exploration technology using the characteristics of amplitude variation versus offset to recognize the rock types and oil-gas reservoir.
振幅随偏移距变化关系的研究，近年来深受勘探地球物理学家的青睐。
In recent years, the study of "Amplitude versus Offset" arouses a great interest in exploration geophysicists circle.
然而，在振幅随炮检距变化的情况下，即当偏移距范围很大时，无论是反射波的振幅还是极性都发生了非常大的变化。
However, in the presence of amplitude variation with offset (AVO), and particularly at large offsets, reflection coefficients and polarities may differ significantly from those at normal incidence.
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