We must find the unknown earthquake source knowing these wave arrival times.
通过这些抵达的次数，我们必将找出未知地震的来源。
It is a measure of the size of the earthquake source and is the same number no matter where you are or what the shaking feels like.
震级是一种测量震源的方法，并且和个人的地理位置，震感无关。里克特震级测量是能观测到的最大震幅。
When an earthquake occurs, it releases energy in the form of seismic waves that radiate from the earthquake source in all directions.
当一个地震发生时，它以从震源向各个方向发生的地震波的形式释放能量。
R value could be taken as quantitative indicator of seismic zoning and seismic risk assessment and latent earthquake source area mapping.
值可作为地震区划、地震危险性评定、潜在震源区划分的值得参考的量化依据。
After the Tangshan earthquake of 1976, strain adjustment took place in the earthquake source region by the occurrence of a series of aftershocks.
1976年唐山地震后，随着一系列余震的发生，震源区进行应变调整。
Area source in engineering seismology is such a type of potential earthquake source which the positions and strikes of genetic faults are uncertain.
工程地震学中所指的“面源”属于这样一类潜在震源区——区内发震断层的位置和走向都是不确定的。
It is essentially consistent with the results from the earthquake source mechanism solution and the results of field macroscopic observations of the main Tangshan earthquake.
与唐山主震震源机制解结果和野外宏观考察结果基本一致。
Studies of the properties of seismogenic structures play an important role in delineation of potential earthquake source and in determination of parameters of seismic activity.
发震构造特性是潜在震源区划分及其地震年发生率确定的重要依据。
The formulas and the directions of the forces acted on the ends of the fault in earthquake source located in the tension region distributed radially have been derived theoretically.
从理论上计算了位于径向分布的张力区中孕震断层端部所受力的表达式和方向。
This revealed that foreshocks rippled away from the source of the rupture in the 45 minutes before the quake - the first time that foreshocks have been conclusively linked to a major earthquake.
它揭露了震前45分钟内，数次前震从震源一层层扩散开来——这是首次得出前震与大地震之间存在联系的结论。
Immediately following the disaster, the facilitators were mobilized as a critical source of information on the impact of the earthquake and tsunami.
灾害发生之后，助理员马上被组织起来，成为反映地震和海啸影响的关键信息来源。
Police have detained a man suspected as the source of gossip about an imminent earthquake hitting Shanxi, Henan Business Daily reported Wednesday.
据《河南商报》24日报道，近日散播山西地震谣言的始作俑者已经落网。
The largest earthquake worldwide during the past 200 years (magnitude 9.5 in May 1960) had a source region approximately 230 kilometers (140 miles) north of the February 27 quake.
在过去两百年中最大的地震（1960年5月9.5级地震）大约发生在此次2月27日地震以北230公里（140英里）处。
Seismic source faults are characterized by regional variation and may have different earthquake generating mechanisms for different region.
多震层内震源断层具有区域性特点，不同地区震源断层可能具有不同的孕震机制；
Fortunately, just after the earthquake, GeoEye, a commercial company, released satellite imagery with a license which allowed the open-source community to use it.
幸运的是，地震发生后不久，GeoEye，一个商业公司发布了卫星图象并有一个许可证允许公开网络社区使用这些图象。
The main inputs for this computation are earthquake catalogue, source mechanisms, the level of seismic activity and the deep structural models.
计算中主要的输入参量为该地区的地震目录、震源机制、地震活动水平、深部结构模型等。
These methods provide efficient ways to the energy source supply systems for defending earthquake-induced fire and have a good application foreground.
这些方法为能源供应系统防御地震次生火灾提供了有效途径，具有很好的应用前景。
The source mechanism, source stress field and source fault for the Chengjiang earthquake of M5.2 has been analyzed by the data of seismic waves.
利用地震波资料对澄江5 2级地震序列的震源机制、震源应力场和震源断层作了分析研究。
The research results show that several significant shocks happened in source region and its vicinity before a large earthquake are easily triggered by certain directions.
研究表明，大地震前震源区及其附近发生的几次显著地震易受固体潮引潮力某个方位附近触发。
The source spectrum of small-moderate earthquake can be represented by theoretical "Brune" model, the geometric attenuation factor of whole path can be represented by three-segment geometric model.
中小地震的震源谱可以用“布龙”理论模型表示，传播路径中的几何衰减因子可以用三段几何衰减模型表示。
At the moment, the source areas of potential earthquake are determined by the way of qualitative describing in practical work.
目前，在实际工作中基本上是采用定性描述方法确定潜在震源区。
Magnitude measures the energy released at the source of the earthquake. Magnitude is determined from measurements on seismographs.
震级测量地震震源能量释放的大小，由地震仪测量计算得出。
A new method and steps of setting up a finite fault source model of a scenario earthquake on an active fault for predicting near-fault strong ground motion are proposed here.
提出了近断层强地震动预测中建立活断层上设定地震有限断层震源模型的方法和步骤。
The MCE is defined as the greatest earthquake that can reasonably be expected to be generated by a specific source on the basis of seismological and geological evidence.
最大可信地震(MCE)： MCE是基于地震和地质证据，某个震源合理预期可能发生的最大地震。
The results showed that the main frequency of the earthquake wave produced by the source is higher obviously than ordinary seismic explosive columns.
结果表明，该震源激发地震波的主频率比普通震源的有明显提高。
The preliminary study result shows that the two segments in question show differential source stress drop and Q value, which can be explained by the earthquake activity.
据初步研究结果，伊通-舒兰断裂南、北两段的震源应力降与Q值存在差异。
By using the seismic source model of crack containing hyperpressure gas, the course of radioactive heat energy in the earth to accumulate in the focal area and cause for earthquake are studied.
根据含超压气体裂隙震源模式，分析了地球内部放射热能向孕震区积聚的过程。
By using the seismic source model of crack containing hyperpressure gas, the course of radioactive heat energy in the earth to accumulate in the focal area and cause for earthquake are studied.
根据含超压气体裂隙震源模式，分析了地球内部放射热能向孕震区积聚的过程。
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