一般地说横波速度大约是纵波速度的一半。
Normally the shear velocity is about half of the compressional velocity.
地震所引起的地面振动是一种复杂的运动，它是由纵波和横波共同作用的结果。
Caused by the earthquake ground vibration is a complex exercise, it is by the P-wave and S-wave interaction results.
纵波的衰减系数在地震频带内基本上呈线性变化，而横波的衰减系数在地震频带内除低频外基本保持稳定。
The attenuation factor of longitudinal wave was changing linearly, whereas the attenuation factor of the slow shear wave kept nearly constant with a low frequency on the exploration seismic band.
提出了用低频多模式超声兰姆波定征方法来估计超薄弹性层的纵波声速、横波声速、厚度和密度等参数。
A low frequency multi mode ultrasonic Lamb wave method suitable for characterizing shear and longitudinal wave velocities, thickness and density of ultra thin elastic layers is presented.
文章还统计了纵波和横波、岩体波速和岩石波速的关系，可供选用指标时参考。
The relations between the longitudinal and transversal waves, the wave velocities of rock mass and rock were also described in it.
利用地震波传播的互换原理，将算法推广到用于计算反射纵波和反射转换横波的旅行时。
With the use of reciprocal principle in seismic wave propagation, the algorithm may be used to compute the travel times of reflected compressional wave or converted shear wave.
理论认为当储层中存在着天然气时，会导致纵波时差增大，横波时差不变，密度测井值减小，中子孔隙度减小。
Theoretically, when gas exists in reservoir, longitudinal wave offset time will increase and transverse wave offset time will not change and density will decrease and neutron will decrease, too.
结果表明，洞窟岩壁的纵波波速、横波波速、动弹模随着洞深的增加而增加；
It is indicated that the longitudinal wave speed, shear wave speed, as well as the dynamic Young's modulus of the Mogao grottoes increase with the increasing depth of grottoes.
在计算出的转换电场波形中，有伴随斯通·利波的电场、伴随纵波和横波的电场、和临界折射电磁波场。
In the calculated full waveforms of the converted electric field, there are electric waves that accompany the compressional, the shear and the Stoneley waves.
介绍了利用劈形楔块作波型变换，达到用纵波探头测量材料横波衰减系数的方法。
A method is presented for measuring the shear-wave attenuation of solids by using propagation of ultrasonic wave in a wedge block.
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。
An acoustic log that USES the attenuation of compressional and shear waves to locate fractures.
发射探头对岩块法向脉冲后产生纵波，同时在其垂直方向产生横波沿该平面的方向传播。
The transmitting probe produces a pulse which causes a P-wave in the normal direction of the plane and a S-wave in its shear direction.
提出用低频超声类兰姆波定征方法来估计超薄黏结复合结构各层与黏结层的厚度、密度、纵波声速和横波声速等参数。
A low frequency ultrasonic Lamb like wave method suitable for characterizing the thickness, density, shear and longitudinal wave velocities of the ultra thin bonding composite is presented.
对具有较大平面的岩块，可以利用纵波探头测定横波速度。
However, the velocity of S-wave in a rock block with a large plane can be measured with the probes for P-wave.
在慢速地层中偶极横波测井不能很好地压制纵波，致使横波首波的检测存在一定的难度。
Since P-Wave can not be suppressed in dipole shear wave log in slow formation, there are some difficulties in picking the first S-Wave arrival.
实际资料处理结果表明，该方法可以跳过慢速地层中偶极横波测井的纵波而检测横波初至。
The results show that the method can skip over the P-Wave and exactly pick the first S-Wave arrival in dipole shear wave log in slow formation.
提出用低频超声类兰姆波定征方法来估计超薄双层胶结复合结构各层的纵波声速、横波声速、厚度和密度等参数。
A low frequency ultrasonic (Lamb like) wave method is used for characterizing the shear, longitudinal wave velocities, the thickness, and the density of ultra thin two layered bonding composite.
纵波的固有频率因仪器的存在而增大，纵波幅度还受地层的纵、横波速度比的影响。
The intrinsic frequency of P-wave increases because of existence of apparatus and its amplitude has been influenced by velocity ratio of P-wave vs S-wave.
如果我们已知介质中横波与纵波速度的比值、水平界面的埋藏深度和炮检距，炮点到共转换点的水平距离就可以通过解一个四次方程求出。
Given the velocity ratio of S-to P-waves, the depth of reflector and the offset, the horizontal distance between source and the converting point can be determined by solving a quartic equation.
这样一来就导致了相对于同一地面点来说，横波静校正量往往远大于纵波静校正量。
Because of this way to the same ground point, the S-wave static correction is often much greater than the P-wave.
本文由波传播问题的变分原理导出了垂向不均匀介质中的弹性波波动方程及纵波和横波波动方程。
According to the variational principle for wave propagation, the elastic wave equation and the compressional and shear wave equations in a vertically inhomogeneous medium are developed.
分析了用纵波波速和横波波速反推强度及灰土比的可靠性大小，并提出了水泥土波速和强度及灰土比的关系式。
The reliability of strength according to the wave velocity is analyzed, a formula about wave velocity and strength of soil-cement is given.
横波传播不受孔隙流体性质的影响，与纵波相比，横波的近地表层可以达到潜水面以下。
As the S-wave transmission from the impact of fluid properties, compared to the longitudinal wave the near-surface of S-wave can reach under the water table.
横波引起的质点振动方向垂直于岩块表面，可以由纵波探头接收。
The vibration direction resulted from the S-wave is perpendicular to the plane, which is received by the probe for P-wave.
不同形式的随机孔隙岩石模型中纵波速度和横波速度的变化程度各不相同。
Different heterogeneous random porous rocks have different scattering effects on wave speeds. The elastic wave speeds caused by larger pore are more distinguishable.
本文利用纵波和横波的迭加速度资料来计算p -SV波勘探中转换点的近似位置。
The Stacking velocities for both compressional and shear wave reflection data was used to estimate the approximate location of the conversion points of the P-SVwave exploration in this paper.
在P波入射时，地下同一点产生的P P波和PSV波是入射角、界面两侧纵波阻抗和横波阻抗的函数，并且两者是耦合的。
When P wave incidents, The P-P wave and P-SV wave created from the same point are both functions of incidence angle, and of the media above and below the interface, Vp and Vs they are coupled.
已有的研究表明，炸药震源在井下激发、可控震源在地面垂向振动，均会产生较强的纯纵波和一定强度的纯横波；泊松比差别较大的分界面有利于形成较强的透射转换横波。
Previous studies show that both dynamite borehole shots and vertical vibrations from controllable seismic sources at the surface will produce relatively strong pure P-waves and weaker pure S-waves.
提取出其中的纵波、横波速度信息，并与实验室岩心声波测量结果和测井结果进行了对比。
With the measured P and S wave velocities and log-derived densities of the same interval, rock mechanical parameters of this pre-borehole are roughly calculated.
提取出其中的纵波、横波速度信息，并与实验室岩心声波测量结果和测井结果进行了对比。
With the measured P and S wave velocities and log-derived densities of the same interval, rock mechanical parameters of this pre-borehole are roughly calculated.
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