地震级别是根据某一时期震动图记录的地震波振幅的对数值计算的。
The magnitude of an earthquake is determined from the logarithm of the amplitude of waves recorded on a seismogram at a certain period.
在影响地震波振幅的诸多因素中，除反射系数外，最主要的是波前扩散和吸收的影响。
Among various factors affecting the amplitude of seismic record, wavefront divergence and absorption are the key ones, except reflected coefficients.
以往利用地震波振幅值预测储层厚度，遇到储层厚度横向变化大的情况时，预测精度往往会降低。
In the past, reservoir thickness prediction is done by seismic wave amplitude value. But whenever the reservoir thickness horizontally changed rather large, the prediction accuracy often reduced.
利用FLAC3D初步分析了地震荷载作用下地震波振幅、频率及持续时间对地下岩体洞室位移特征的影响。
The influences of earthquake amplitudes, frequency and duration time on the different rock cavern displacements are primarily studied by using FLAC3D.
测点上某一震相的振幅和周期决定于震源强度以及震源到测点的整个传播过程中介质对震波的影响。
The amplitude and period of a phase at a receiving point depend on source strength and the effect of medium on seismic wave in the propagating from source to the receiving point.
如果我们测得地震波的走时和振幅，我们就能够确定地下的几何形状并估算与岩石速率和密度有关的声阻抗。
Seismic measurements of travel time and amplitude define the subsurface geometry and give estimates of the acoustic impedances related to rock velocities and densities.
地震波反射振幅的变化受诸多因素的影响和控制。
The amplitude variation of reflection were influenced and controlled by many factors.
这些结果为运用地震波的方位振幅和方位动校正速度差异进行裂缝参数反演提供了依据。
These results give us the evidence to use the amplitude and NMO velocity difference for parameter inversion in fractured media.
为此，在大庆长垣葡萄花地区采用了积分振幅与地震波旅行时视时差的积来预测储层厚度，取得了较好的效果。
For this reason, Daqing Putaohua Area has switched over to adopting the product of integral amplitude and travel time apparent difference and finally has won much better results.
地震波的吸收衰减信息和振幅信息密切相关，与其他地震信息相比具有更高的灵敏度。
The attenuation by absorption of seismic waves is closely relative to amplitude information and has higher sensibility if in comparison with other seismic information.
因此，利用地震波的振幅、衰减等属性参数检测裂缝特征比利用速度参数更有效。
Therefore, seismic amplitude as well as attenuation characteristic attribute may be much better than velocity one for the detection of the fracture system.
地震波反演的另一个障碍，主要是所记录的地震波响应中频率信息及相应的振幅真值的不完整与严重缺失。
The other problem in seismic inversion is that the frequency information and amplitude real value recorded by seismograph are incomplete and severely absent.
在满足相似律的条件下，通过输入不同地震波类型、频率、激振方向和振幅，系统地研究模型斜坡的地震动力响应特性。
Under the condition of similitude law, the seismic responses of model slopes are investigated with different input wave kinds, frequencies, excitation directions and amplitudes.
在满足相似律的条件下，通过输入不同地震波类型、频率、激振方向和振幅，系统地研究模型斜坡的地震动力响应特性。
Under the condition of similitude law, the seismic responses of model slopes are investigated with different input wave kinds, frequencies, excitation directions and amplitudes.
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