| 1. | Normally the shear velocity is about half of the compressional velocity .
一般地说横波速度大约是纵波速度的一半。 |
| 2. | The results show that the longitudinal and transversal wave velocities in different directions increase with the increase of viscosity , while the parameters of rock velocity anisotropy
结果表明： 1随着黏度的增加，岩石纵横波速度增大，各向异性参数 |
| 3. | Are contrary to this ; the longitudinal and transversal wave velocities in different directions increase with the increase of salinity , while changes of the parameters of rock velocity anisotropy
减小2随着矿化度的增加，岩石纵横波速度增大，各向异性参数 |
| 4. | The longitudinal wave velocity in saturated soil could not only be useful , but reflect more information as well . the shear wave velocity may be different from the shear sewv , the difference is proved to be caused by porosity and structure factor
认为潜水面下纵波速度能反映更多的信息，并且，横波速度与骨架的横波速度也可以由孔隙率及结构因子引起差异。 |
| 5. | To study the changes of poisson ' s ratio and its anisotropy with confining pressure , we measured p - and s - wave velocities in three orthogonal directions in 19 rock samples under different confining pressures
为了研究不同岩石中泊松比及其各向异性随围压的变化，选取19块典型的岩石样品，在不同围压下沿相互正交的3个方向同时测量纵、横波速度，并通过计算得到了泊松比及其各向异性。 |
| 6. | The typical samples with different lithological characters are collected from two wells of representative reservoir consisting of sandstone and conglomerate of positive rhythm . compressional and shear wave velocities , porosity , and clay content are measured in two states fully saturated with water
在复杂的正旋回砂砾岩储层中，从两口井系统地采集了不同岩性的典型样品，在不同的有效压力及两种状态气饱和和水饱和下测试了岩石的纵横波速度。 |
| 7. | When pure shear wave propagate in anisotropy media , even thought propagation direction is parallel to the direction of aligned cracks , experimental results exhibit that only two kinds of shear - wave velocity can be measured - fast shear wave and slow shear wave neglecting polarization direction
这个实验结果进一步表明，纯横波在各向异性介质传播时，即横波的传播方向与裂隙平行，无论横波的偏振怎样改变，只能观测到两种横波速度，快横波和慢横波。 |
| 8. | 3 ) from the samples saturated completely by air to those saturated completely by brine , the velocities of compressive wave of the rocks increase obviously , with the extent of 11 . 73 % ; the velocities of shear wave change little or decrease slightly , with the average of decreasing extent of 1 . 21 % for shear wave 1 and 1 . 16 % for shear wave 2 . the difference of velocity between compressive wave and shear wave makes poisson ' s ratio increase obviously , with the average extent of 87 . 25 %
3 )从完全饱和气到完全饱和水，珠江口盆地第三系砂岩、粉砂岩、碳酸盐岩及其过渡性岩石类型的纵波速度是显著增加的，平均增加幅度为11 . 73 ；横波速度变化很小，或略有降低，横波1平均降低幅度为1 . 21 ，横波2平均降低幅度为1 . 16 ；纵横波速度的这种差异变化导致泊松比显著增加，平均增加幅度为87 . 25 。 |
| 9. | ( 3 ) p and s wave velocity and dynamic & static modul of sand rock in huanhua basin are the first time measured using " mts rock physical parameter testing system under formation condition " of " state key laboratory of oil and gas reservoir geology and exploitation " . at the same time , relationship between seismic response and oil & gas is discussed and summarized
( 3 )利用“油气藏地质与开发工程”国家重点实验室mts岩石物性测试系统，首次对黄骅坳陷砂岩进行了高温高压下的纵、横波速度及动弹模量的测定，对黄骅坳陷砂岩的地震响应与油气关系进行了分析和总结。 |
| 10. | Research shows : change of temperature & pressure of sand rock results in prominent change of seismic p and s wave velocity and dynamic & static modul and seismic attenuation of sand rock . change of pore liquid character and saturation results in change of seismic p and s wave velocity and attenuation of sand rock
研究表明：岩石所处的温度压力条件的变化将导致纵横波速度、动弹参数和衰减的显著变化：孔隙流体性质(含水或油、气)及饱和度的变化将引起纵、横波速度、衰减的明显变化。 |
