An acoustic log that USES the attenuation of compressional and shear waves to locate fractures.

利用纵波和横波的衰减确定裂缝位置的一种声波测井方法。

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For severely anisotropic rocks, the quasi-shear waves exhibit complex directionality, with cusps.

在严重的各向异性岩石中，准剪切波有复杂的方向特性，并有歧点。

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A linear transformation method to extract the onset of fast and slow shear waves is proposed in this paper.

提出了提取快、慢剪切波初动的线性变换方法。

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