The number above the beginning of each trace is the source azimuth and below is the epicentral distance.
每条轨迹起点上的数字是震源方位角与震源深度。
The similarities are similar epicentral distance, similar waveform and both with rich seismic wave groups.
震中距相近，波形相似，地震波组列丰富。
The faults of the strong aftershocks were traced from epicentral distribution of these smaller aftershocks.
强余震的断层是依靠这些小余震的震中分布来描绘的。
Epicentral depositions and earthquake deformation zones provide useful information about focal region size.
震中拗陷与地震形变带提供了震源区大小的信息。
The effects of magnitude and epicentral distance on long period spectral components are not so stronger as for…
震级和震中距对短周期反应谱影响明显，对长周期反应谱也有一定影响。
These facts show that before the earthquakes, deformations of the earth crust in the epicentral regions had already occurred.
这些事实说明了大地震发生前震中区的地层已有变形。
Finally, the relationship between Tangshan groundwater level anomalies in epicentral area and focal evolution process is discussed.
文末，用唐山震中区地下水位异常资料，讨论了与震源演化过程的关系。
In this paper, the epicentral coordinates for the two events are given, and also the reason that they were two events but one is discussed.
文中还给出了这二次地震的震中坐标，并论证了不是一次地震而是两次地震缘由。
The absolute stress value determined within the epicentral region of a strong earthquake is usually less than that of the region outside it.
大震后在震中区测得的应力值比离震中较远处测得的应力值要低。
The results show that the magnitudes and the soil conditions would gite more significant effects on the response spectra than the epicentral distances; do.
结果表明：震级和场地条件对反应谱形状的影响要远比震中距的影响明显。
A new method for evaluating epicentral intensity from magnitude predicted is presented by the fuzzy reasoning and the possibility concept of fuzzy measures.
本文运用模糊推论原理和模糊测度中的可能性概念，提出了一个从预报的震级推算震中烈度的新方法。
Empirical formulas between magnitude, anomalous area of the autocorrelation coefficients and epicentral distance for every station are statistically obtained.
统计得出了各台所对应的地震震级与自相关系数异常面积和震中距的经验公式。
The concept of discrete regression, the method called repeated information distribution and its application in the epicentral intensity recognition are presented in this paper.
本文提出了离散回归概念，建立了用累次分配信息扩散模型进行震害经验离散回归的方法，介绍了其在震中烈度识别中的应用。
The stress field of periphery of the epicentral region transformed from positive stress into negative stress, and the value of the positive stress increased gradually before the earthquakes.
地震前，震中区周围应力场发生转向，由正应力区变为负应力区，同时正应力的量值逐渐增大。
The results show that in the most areas influenced mainly by the potential sources of the epicentral earthquakes and the regional earthquakes, PCS is generally lower than CDS in the long periods.
分析结果表明，对于较为普遍的主要受直下型地震和近震潜源影响的地区，在长周期部分，一致概率谱总体小于规范谱。
The results show that in the most areas influenced mainly by the potential sources of the epicentral earthquakes and the regional earthquakes, PCS is generally lower than CDS in the long periods.
分析结果表明，对于较为普遍的主要受直下型地震和近震潜源影响的地区，在长周期部分，一致概率谱总体小于规范谱。
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