地震

Based on the sliding response theory of the free-standing equipment, the differential equation of motion of the free-standing equipment under seismic excitations is presented. The equation is solved by Runge-Kutta algorithm, therefore the absolute acceleration, relative velocity and relative displacement of the equipment can be obtained. The sequential coulomb friction model is applied to the analysis.

以前人研究建立的浮放设备滑移反应分析理论为基础，给出了浮放设备在水平和竖向地震输入下滑移反应运动微分方程，选取连续型的库仑摩擦力模型，采用Runge-Kutta法求解浮放设备地震滑移反应运动微分方程，可以得到浮放设备在地震作用下的绝对加速度、相对速度和相对位移反应时程。

Research has been made on the airgun principle and its testing strategy, then we simulated the wavelets in both near field and far field of the airgun source on the Ziolkowski model basis, and the analysis on its energy and P/R at different depths is given.

本文针对滩浅海地震勘探的难点问题，特别是滩浅海地震资料信噪比、分辨率低，干扰严重的问题，在滩浅海地震勘探野外采集方面取得了较大进展。

The present digital water level recording may possibly lose some information,so large earthquake caused abnormal change of water level recorded by analog recording is clearer than that by.

认为：目前的水位模拟记录较数字化记录能更清晰地看到巨大地震引起的水位异常变化过程；大震引起的水位上升和下降可能是地震波的作用改变了构造单元的应力所致，并与井点的地质构造部位有关；同一井孔对同一断层上破裂方式一致的大地震的响应方式是一致的，只是对震级大的地震响应幅度大，震级减小，响应幅度亦减小

The influences of stiffness of rock, different types of wave and angle of incidence for the response of soil layer are discussed.

在进行层状土层的随机地震反应分析时，通过将波动理论和随机振动理论有机的结合起来，以综合考虑体波斜入射情形及基岩弹性刚度对土层地震反应的影响，从而拓宽了土层随机地震反应分析的求解范围。

Based on the analysis to the anomalies of Wen'an Ms5.1 Earthquake,it is found that anticlockwise migration is a basic feature of earthquake activity, and it can be as a background anomaly.

对文安5.1级地震的一些异常进行了分析和总结，认为地震逆时针方向迁移可能是地震空间活动的一个基本特征，其可作为背景异常。

It can be also found from the calculation and analysis that the values of ambient shear stress and apparent stress are correlative with magnitude, and the variation of these two stresses is clearly interrelated with activity behavior of the earthquake sequence.

对青岛峙山地震序列中261个小震的数字化波形记录计算分析后发现，环境剪应力τ0值和视应力σ值与震级明显相关，并且相同震级的地震事件所计算出二者的变化与地震序列的活动状态密切相关。

The ideas and results of the different methods presented in this paper reflect the state-of-the-art and the application prospects of AVO techniques.

从地震模拟方法研究，不同介质中的地震模拟和地震模拟方法在AVO分析及参数反演中的应用3个方面介绍了第67届EAGE年会论文中的主要内容。

The extrema of the seismic data are used to get the modulation function which operated with the original seismic data to get the high frequency part of the reconstruction data to rebuild the wide band data.

该方法利用地震资料极值点得到的调制函数通过与原地震资料的运算得到重建资料的高频部分，保留原地震资料的低频部分，得到重建的高频地震资料。

Seismic amplitudes can be correlated to log lithologies using 90°-phased seismic data, and, consequently, seismic traces can be interpreted as wireline lithologic logs.

地震沉积学在高频率层序和沉积体系研究中有着特殊的优势。90°相位地震资料的振幅可以和岩性测井曲线对应，对地震资料进行90°相位转换后可以通过地震振幅分析岩相。

The analyses of earthquake clouds as a form of earthquake prediction are generally not accepted by seismologists and other scientists.

通过分析地震云来进行地震预报，也是地震预报的一种形式，但这种方式通常不被地震学家和其他科学家所接受。

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。