地震

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 textural research on the historical earthquake data and the field investigation of

根据对历史地震资料的考证和实地调查，论证了公元1219年宁夏固原地震应为一次地震，而不是二次或三次地震。

Considering the difference of earthquake intensities in both sides of the fault zone, artificial earthquake waves were simulated by trigonometric series method with different seismic peak accelerations. Then the seismic failure numerical analysis was carried out, the weak areas of seismic failure and their reasons were discussed particularly.

考虑到断裂带两侧地震强度的区别，采用三角级数法模拟人工地震波时选用不同的地震峰值加速度，然后对其进行地震破坏数值分析，重点讨论了桥梁地震破坏的薄弱部位及其破坏原因。

The high resolution multiazimuthal walkaway VSP method was applied to the accurate prediction of reservoirs in Tahe oil field.

将高分辨率多方位VSP地震方法应用于塔河油田储层描述，实现了上行反射P波和S波精确成像，提高了地震资料及储层预测的分辨率；并建立了含缝洞碳酸盐岩储层的地震反射特征和裂缝发育储层的地震识别方

The reflected wave of Lei-1 seismic profile measured during the high resolution exploration in 1991 is characterized by poor continuity and weak energy.

针对1991年高分辨率勘探所得雷－1地震剖面反射波连续性差、能量弱的特点，为了用地震勘探方法解决四川盆地油气储层薄、孔隙度低、油气产出能力与裂缝发育程度关系这3个地质问题，1997年在四川盆地罗渡溪构造开展了以查明雷－1构造形态、断层展布为地质目标的高分辨率地震勘探方法试验，得到了一套关于高分辨率地震勘探采集装备配置及野外施工的方法。

Based on the ISC earthquake catalogue data, according to the orbit equations of two-body-problem and the perturbation theory of celestial mechanics, we could determine the projection pole of the sun, and thus calculate the zenith distance from the sun to the epicenter. After calculating all the earthquakes on their zenith distances, we could get the distribution of the solar zenith distance versus the occurring probability of earthquakes.

基于ISC地震记录，利用天体动力学中二体问题的轨道方程和摄动理论，确定发震时刻太阳在地面的投影点位置，并进一步计算出太阳相对震中的地心天顶距，将地震按天顶距的大小进行统计，得到地震的太阳天顶距地震频度分布。

It means that earthquakes recur clusteringly in time intervals of close length. This model contains two kinds of meanings: one is that earthquake cluster quasi-periodically recurs, and the other is that earthquakes within an earthquake cluster clusteringly recur.

这种所谓准周期丛集复发是指大陆板内地震以大致相近的时间间隔成群丛集发生，它包含有两层含义：一是指地震丛是准周期重复发生的；二是指在某一地震丛内，地震又是丛集复发的。

By evaluating the Coulomb failure stress changes produced by the coseismic rupture and viscoelastic relaxation of the 4 preceding large earthquakes, we find that the Coulomb failure stress changes produced by the viscoelastic relaxation are much more significant than that produced by the coseismic deformation in 3 of the 4 earthquakes.

在计算过程中定量估计了可可西里地震发生时前面4个地震同震形变和黏弹性松弛导致可可西里地震破裂面上库仑破裂应力变化之间的比值，发现前3个地震由黏弹性松弛造成的变化远远大于同震形变所造成的变化。

The analysis on unilateral, bilateral and lateral-torsional coupled seismic response of base-isolated structures with lead rubber bearings is carried out. The maximal displacement of the bearings is studied. The influence on lateral-torsional coupled seismic response of base-isolated structures due to the excentricity and uncoupled period ratio of the superstructure, and the excentricity of the isolation system is investigated.

对铅芯叠层橡胶支座基础隔震结构进行了单向及双向地震反应对比分析，并研究了支座最大位移的确定；对结构进行了平—扭耦联地震反应分析，研究上部结构的偏心距及非耦联周期比、隔震层偏心距等因素对结构的平—扭耦联地震反应的影响，并对结构平—扭耦联地震反应的控制进行了探讨。

In this paper, seismic fatalness is estimated by using data with different accuracies.

1本文采用一种类似于确定性地震危险性分析和概率性地震危险性分析的方法，即联合使用现有的不同精度地震资料的方法对地震危险性进行了评估。

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。