地震活动

In this paper, the approach to the understanding of seismic tectonic environment in moderate and strong earthquake areas are discussed through the antithetic analysis of shallow and deep structures, macro microstructural analysis, and analysis of both historical and recent seismic data.

引言地震预报尤其是地震趋势预测仅以地震活动的时间和空间图像为主要研究对象是不够的，尚须结合对地震构造物理图像即地震发生的地质构造条件的探察，才有可能逐步推进从经验预报向物理预报过渡的进程。

Taking the regional seismicity energy as the random function of space and time, the features of small seismicity field in Ningxia and its neighborhood region are studied by the analytical method of natural orthogonal function expansion.

地震释放能量是地震活动的一个本质要素，可看成是空间和时间坐标的随机函数，这个随机函数可称为地震活动能量随机场，或称为地震能量场。

There are two important questions: one is what is the properties of the seismicity before the earthquake, the other is about the character of the aftershock sequence.

两个重要的问题是，在这次地震之前，地震活动有什么样的性质；这次大地震的余震活动，具有怎样的特征。

The SLC method has been suggested,the temporal and spatial relationship among earthquake...

文章认为，SLC方法考虑了地震事件的时空关联性，可以用来分析区域地震活动趋势，是研究地震活动性的有用工具

"Seismicity at almost all scales is absent from most faults, before any large earthquake on that fault; the San Andreas Fault in Southern California is remarkably somnolent at all magnitudes on the section that tore in the 1857 earthquake."

"大地震在某个断层发生之前，几乎所有标度的地震活动性都存在于大部分断层之外；地震活动性在南加利福尼亚州San Andreas断层上1857年被扯断的那一段前处于一种引人注目的催眠状态。"

The tempestuousness raise and descent of reservoir water level should be paid more attention to because earthquakes of moderate magnitude may be induced by the load or unload of water in a short time period. Based on 71 earthquakes of M≥3.5 occurred in Xinfengjiang region from 1970 to 2007, statistical features of the sequences have been studied.

地震与水库蓄水变化的研究表明，1965年至今该区地震活动的增强与库水位的上升没有明显的线性关系，并且M≥4.0级地震65%发生在库水位下降或由下降转为平稳波动的过程中，因此，更应关注水库卸荷阶段的地震活动。

On the basis of relation between the seism and solar activity, it is pointed out that the periodicity evolution of the seisimic activity is under the modulation of solar activity.

在太阳活动与地震相关研究的基础上指出：在周期性太阳活动的调控下，地震活动也显示出明显的周期性演化。

Meanwhile,the predicting area can be reduced according to the spatial anomaly distribution of values of A and GL,and combining with the seismotectonic background.

图1 1973年以来四川及邻区6级以上地震震中分布1强震前区域中等地震活动特点强震发生前地震活动的表现形式因震而异。

In this paper, some methods of fuzzy mathematics suah as the direct method of fuzzy pattern recognition, the method of fuzzy clustering analysis the method of fuzzy information retrieval, and the recently advanced method of fuzzy fractal dimension have been applied to earthquake monitoring and prediction in the Surrounding Capital Area based on the seismicity and earthquake precursors. The seismic and unseismic precursors before both the Tangshan M=7.8 great earthquake in July, 1976 and the Datong-yanggao M...

本文把模糊数学中的模糊模式识别的直接方法、模糊聚类分析方法、模糊信息检索方法和新近提出的模糊分维方法应用到以地震活动性和地震前兆为基础的首都圈地震监测预报当中，分析研究了发生在这一地区的两次大地震，即1976年唐山7.8级和1989年大同6.1级地震前用模糊数学方法识别出的地震学前兆和非地震学前兆，并对这一地区大地震的长期和中短期模糊预报方法与途径进行了简要的讨论。

Combining an evaluation of seismic risk in Panjin area is given by determining seismic activity parameter for the design of the considered area , settingup its fortifying-level divided areas and establishing divisions for predicting the destructive degrees of an earthquake when sandy soil is liquidized .

本文利用研究区地质构造特征，古地震和地壳形变等资料建立断层模型，求解地震活动参数，判定未来地震发生的地点、强度和频度，并结合面源模型的地震危险性分析，建立研究区设计地震动参数及其设防水准分区，砂土液化震害程度预测区划，对盘锦地区的地震危险性问题做出了评价。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。