At present, the deep shear wave source technique is still in juvenility, major multiwave technical studies are directed against transformed waves.

目前深层横波震源技术尚不成熟，大量的多波技术研究仍然是针对转换波。

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Then the azimuth of formation fractures is estimated; and with the joint use of zero offset P wave source VSP data, fast and slow shear wave seismograms are obtained to have fracture density.

在获得地下裂隙方位角的同时，结合零偏纵波VSP资料得到快、慢S波记录，进而计算了裂隙密度。

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