本文运用主成份法对115个强地震运动资料进行了分析。
In this paper, using principal component method 115 strong-motion earthquake records are analysed.
建筑结构应该能够承受一定地震运动的作用，同时也应该允许其产生一定的损伤。
The structure must be survived in a certain seismic motion, there are several methods to predict the state of damage of the structure after the seismic.
科学家门把地震运动划分为四种速度从3千米每秒到15千米每秒不等的四种诊断性波。
Scientists categorize seismic movements into four types of diagnostic waves that travel at speeds ranging from 3 to 15 kilometers (1.9 to 9.4 miles) per second.
本文根据变分原理，利用有限单元法分析在水平地震运动作用下圆柱形弹性储液罐的动力反应。
Based on the variational principle, the dynamic responses of flexible cylindrical liquid storage tanks, excited seismically have been analyzed by the finite element method.
算例表明，地层对地震运动加速度有一定的放大作用，在地下结构抗震计算中应以实际基岩地震运动加速度作为地震动输入。
The example shows that the ground has some amplifying action to seismic acceleration and the real seismic acceleration of the sole rock …
地球内部因放射而产生的热量为板块运动、大陆漂移、造山运动和地震提供了能量。
Earth's internal heat, fueled by radioactivity, provides the energy for plate tectonics and continental drift, mountain building, and earthquakes.
这些因素包括：大坝的重要性，地震时地面运动的程度，大坝出现或没有出现重大损坏，以及在当地或附近发生强震时大坝质量的可靠性。
These factors include importance of the dam, severity of the ground motion, occurrence or lack of observed damage, and availability of quality strong motion records at or near the dam.
但是，如果扰动影响的地区很大，象强烈地震所能做到的，那末所产生的地震海浪运动好象沿直线产生而不是在一点产生。
But if the disturbance affects a large area, as a great earthquake can, the resulting seismic sea waves nay behave as if they had been generated along a line rather than at a point.
这些网络使用多种地震仪器来监测地壳的运动。
Many kinds of seismic instruments are used by the networks to monitor the movements of the earth's crust.
比如过去人们把气候和地震归结为神的介入；后来，人们知道这是因为气压系统和地壳板块的运动。 换句话说，人们依赖于神来解释的未知领域变得越来越少
Once humans attributed the weather or earthquakes todivine intervention; then they discovered high-pressure systems and platetectonics.
然而，这里所说的仪器记录下来的只是地震波运动中的水平部份，地震波的运动实际比这要复杂得多。
The apparatus thus described, however, records only the horizontal component of the wave movement, which is, in fact, much more complicated.
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.
地震会引起滑坡或类似的局部地表运动。
The earthquake may trigger landslides or similar local surficial movements.
地震会引起滑坡或类似的局部地表运动。
The earthquake may trigger landslides or similar local surficial movements .
地震会引起滑坡或类似的局部地表运动。
Earthquake may trigger landslides or similar local surficial movements.
要了解有关黄石公园的火山过去的内容，并查看有关地震的最新数据，地面运动和水流，请访问钒酸钇网站。
To learn more about Yellowstone's volcanic past and to view current data about earthquakes, ground movement, and stream flow, visit the YVO website at.
大陆板块的地壳运动导致地震是同时被内部与外部能量触发的。
The crustal movement of the continental plates causing the earthquakes is being triggered by both inner and outer energy forces.
太平洋的收缩引起板块向其他板块挤推，造成了剧烈的地震和快速的造山运动，尤其是沿著“火环”的地区。
Compression of the Pacific caused plates to be pushed under others which caused violent Earthquakes and rapid mountain building particularly along regions of the Ring of Fire.
地震就是这种运动的一个结果。行星构造一个解释为什么地球表面会变化和这些改变怎样导致地震的一个科学领域。
Earthquakes are a result of that process. Plate tectonics is the area of science that explains why the surface of the earth changes and how those changes cause earthquakes.
全球定位系统GPS是利用监测地壳运动进行地震预测的新手段。
The Global Positioning System (GPS) is used to monitor crustal movement which is the new method for earthquake prediction.
然而地震的发生并不仅仅是大自然自身的地质运动的结果，也同时和人类本身的活动息息相关。
However the quake was not merely nature itself the result of the geological movement, also and human itself activities closely bound up.
但并不是所有的地表断裂都直接与震源的运动相联系，它们也可能是由于地震波造成的次生影响。
However, not all the fault surface and the source directly linked to the movement, they also may be due to seismic waves caused by secondary impact.
但并不是所有的地表断裂都直接与震源的运动相联系，它们也可能是由于地震波造成的次生影响。
However, not all the fault surface and the source directly linked to the movement, they also may be due to seismic waves caused by secondary impact.
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