通常假设地球对地震波传播为各向同性体。
本文的方法可用于研究复杂的近场地震波传播问题。
Puthermore, it can be applied to study more complex near field wave propagation problems.
本文根据地震波传播理论，对出现这些偏差的因素进行了探讨。
With the propagation theory of seismic wave, we analyzed the factors related with the magnitude and position deviation.
基于双相介质中地震波传播理论，论述了地震孔隙度预测原理。
The paper discusses the principle of porosity prediction with seismic data based on the propagation theory of seismic wave in diphase medium.
相应的程序可用于均匀介质和不均匀介质中地震波传播的模拟。
The programs developed can work for forward modeling of seismic waves propagating in...
本文根据弹塑性理论，提出一种弹塑性介质地震波传播的数学模型。
The mathematical model which describes seismic wave propagation in elastoplastic medium is developed on the basis of elastoplastic the - ory.
通过动力平衡方程和本构方程阐述了爆破地震波传播的数值计算方法。
Through the power balance equation and the constitutive equation described the numerical method of blasting seismic wave propagation.
借助于贝塞尔函数的良好性质，其研究结果可用于地震波传播问题的研究。
Make use of the perfect characters of Bessel functions, this result may put a way to the final solution of the propagation of the shock waves.
在此基础上，建立了爆破地震波传播过程的计算模型，编制了有限元计算程序。
On this basis, a calculation model for propagating process of blasting seismic waves and a FEM program have been established.
本文应用磁弹性波理论，提出伴随地震波传播的同时，地磁场将产生一个扰动。
Based on the theory of magneto-elastic waves, a geomagnetic disturbance accompanying the propagation of seismic waves was studied.
在地震波传播的数值模拟中，在有限区域建立吸收边界条件是一个很重要的问题。
In the numerical simulation of the wave equation, to develop an absorbing boundary condition in the finite domain is a very important problem.
该法不仅考虑到地震波传播方向，而且还考虑到坝基基岩变形对堤坝动力反应的影响。
The approach takes into account not only the effect of direction of seismic wave propagation but also the effect of deformation of the foundation rock through which the waves pass.
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.
在分析中，考虑了四层高架结构在地震时的耦合振动作用，以及地震波传播方向的任意性。
In the analysis, both the coupled vibration of four level structures under earthquake and the randomness of spread directions of input seismic waves were considered.
讨论了爆破地震产生的地震波传播规律，以及地振动信号和仪器记录的电信号之间的关系。
In the paper, the travel law of seismic wave which is excited by explosive shock, and the relation between the vibration signal of ground and electric signal recorded by instruments are discussed.
文中涉及粘弹性力学理论、地震波传播理论、有限差分理论、波场正演模拟技术等相关知识。
Many correlative techniques are involved, including seismic viscoelasticity, seismic wave theory, finite-difference and wave field modeling.
对某水电站地下洞室爆破振动进行观测、分析和处理，得到了爆破地震波传播衰减经验公式。
The blasting vibration of an underground chamber is observed, analyzed and interpreted. The experience formula of decay for the blasting earthquake wave is obtained.
计算结果与均匀半空间自由场做了对比，以说明竖向地裂缝对地震波传播和附近地面运动的影响。
Compared with the seismic responses of free homogeneous half space, the results present the effect of vertical cracks on the propagation of seismic wave and the ground motion near the fault site.
由于动应力是伴随地震波传播而出现的，因此，动应力变化量是暂态的，作用于邻近断层面上时间有限。
Dynamic stress is caused by the radiation of seismic wave, so the dynamic stress is transient. The time that acted on fault plane in the vicinity is limited.
本文仅涉及地震波传播及爆破方法选择两个课题，研究表明：在这类课题中，利用动态光弹性法有其优越性。
This paper only involves selection of detonating methods and propagation of earthquake waves. The study shows the superiority of using dynamic photoelasticity in the research area.
波动方程数值模拟实质上是根据地下介质条件求解地震波波动方程，模拟的地震波场包含地震波传播的各种信息。
Wave equations numerical simulation is actually calculate the solution of seismic waves 'equations which contains all information of seismic waves 'propagation under different medium situation.
借助模型技术，可以利用孔隙介质中粘滞流体对地震波传播速度的影响预测地震波传播速度，降低反演结果的不确定性。
With the help of model techniques, we can determine seismic velocity in porous media by accounting for viscous fluid effects on wave propagation.
该方法克服了小倾角差分偏移的各种困难，实现了快速、准确的地震资料偏移的高分辨率处理以及地震波传播的数值模拟。
This method solves the shortcomings of small dip difference migration and realizes rapid and accurate high resolution process of seismic data m…
由于此模型不但考虑了岩层骨架的粘性，而且考虑了饱和度对地震波传播的影响，从而可以全面地了解地震波在准饱水岩层中的传播特性。
This model can consider the effect of the viscosity of rock skeleton and saturation degree on the propagation of the seismic wave.
对于层状介质，油藏变化前后的地震波传播路经比较复杂，其激发点和接受点发生了变化，要想用叠前远偏移距数据直接计算垂直时差比较困难。
But to layered strata, the seismic wave path is complicated when reservoir changes, and it is difficult to directly define vertical time difference by pre stack far offset seismic data.
地震学是研究地震波如何在地球内部传播的科学。科学家通过地震学研究地球及自然灾难，地震仪是最有效的工具。
Scientists study the Earth and natural disasters through the science of seismology - how seismic waves move through the Earth - and seismometers are their most important tool.
地震学是研究地震波如何在地球内部传播的科学。科学家通过地震学研究地球及自然灾难，地震仪是最有效的工具。
Scientists study the Earth and natural disasters through the science of seismology –how seismic waves move through the Earth –and seismometers are their most important tool.
然而，当科学家们运用更多更好的地震仪来收集地震波如何在地球上传播的相关数据时，逐渐证明地核的地质状况要远远复杂得多。
But the geology of the core is turning out to be much more complex as scientists make use of more and better seismographs to generate better data about how seismic waves travel through the planet.
美国中部及东部的遇到的有关地震的问题是双重的：地震波在这部分古老而寒冷的地面上传播的较快，所以危害传播得更广。
The problem with quakes in the central or eastern us is two-fold: Seismic waves travel farther in the colder, older crust under that part of the country, so the damage can be more widespread.
地震波沿地球南北两极传播比沿东西方向传播的要快。现在，科学家们认为已找到了这一问题的原因所在。
Seismic waves traveling between Earth’s poles move faster than those moving east-west, and now scientists think they may know why.
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