地震

There are many noise sources in measuring the seismometer transfer function, the main noise sources are investigated. The method of cross-special analysis is presented, flow process diagram of computing is given, the algorithms are discussed in detail, such as low-pass digital filter, computing of seismometer transfer function initial values, time domain convolution, bilinear transformation, estimation of power spectrum and cross-spectrum, window functions and preprocessing of measuring data etc.

在地震计传递函数测试过程中的存在多中噪声，本文分析了主要的噪声来源；介绍了用互谱分析方法测试地震计频率特性的基本原理和方法；给出采用该方法确定地震计传递函数的算法流程图；并对计算过程中采用的低通滤波器、地震计传递函数的初值确定方法、卷积运算方法、自谱和互谱估计、采用的窗函数和测试数据的预处理进行了详细讨论。

One bine is that some occurred earthquakes are regarded as the "cause" of coming earthquakes, that is as the occurred earthquakes produce effect on regional stress fields, which result in the occurrence of relatively strong earthquake.

一类是以已经发生的一些地震作为未来可能发生的地震的"因"，即由于已经发生的地震对区域应力场的影响，导致未来发生较强地震。

Based on seismic source spectrum solution by multi-station and multi-event coda method, applying Brune seismic source model, we have got the source factors and spectra of 48 small earthquakes occurred before and after the Douhe earthquake of October 6 in 1995. The seismic moments, corner frequencies and stress drops are estimated from the spectra, and their correlation and variation with time before and after the Douhe earthquake are discussed.

在震源谱的多台多震尾波解法的基础上，应用Brune震源模型，求解1995年10月6日陡河ML5.9地震前后在其周围发生的48次小地震的震源因子和震源波谱，进而估算了地震矩、拐角频率和应力降，并讨论了它们之间的相互关系和在陡河地震前后随时间的变化。

As for this condition the study of physical measure of seismic intensity and damage potential of ground motion based on the abundant records and specified damage material from Chi-Chi earthquake is conducted in this paper. The main contents and conclusions of this dissertation are followed.

针对这种状况，本文利用台湾集集地震提供的同一地震中得到的丰富的地震记录和详尽的震害资料开展了烈度物理标准和地震动破坏势的研究，主要研究内容和成果有以下几个方面：(1)整理统计了集集地震的工程震害资料，并以此为基础采用平均震害指数方法绘制了集集地震的烈度等震线。

More extensive logistic tree cited to describe an earthquake in graph of seismic division into districts tectonic geometry configuration, magnitude and the uncertainty with periodic recrudesce, among them diagnostic earthquake model includes: Sign of ザ grain screen is cast? of P of Wu of an ancient small-mouthed wine vessel of Jian of an ancient small-mouthed wine vessel of breasts of grain screen model and the float earthquake model that give magnitude of model of not fixed section.

在2008年地震区划图中引用了更为广泛的逻辑树来描述地震构造几何形态、地震震级和复发周期的不确定性，其中特征地震模型包括：单段破裂和多段破裂的特征地震模型，以及给定震级的浮动地震模型。

Characteristics and principles of time clustering and frequency with a seismic sequence of more 380 years (1615 —1998) are performed using fractal theory and rescaling range analysis theory. It is concluded that the fiactal dimensions of seismic subset are similar to each other, the mean value is about 0.405, and interval of scale invariance can change 1-2 magnitude order. It is also found that the Hurst index ranges from 0.5412 to 0.5580. The results show that there is of statistical self-similar among different magnitude earthquakes in the area of bridge site.

应用分形理论和R/S分析原理，编写了程序，分析和研究了桥址区的380多年（1615～1998）地震序列的地震时间从集和地震频度特征及规律，得出桥址区不同震级范围的子集合具有近似相等的分维值，约为0.405，子集合无标度区可跨1～2数量级；不同震级层次的地震频度Hurst指数为0.5412～0.5580，都表明了桥址区不同震级层次的地震之间具有统计自相似性。

When a certain place in a large earthquake, in a period of time, often in a series of earthquakes, one of the largest earthquake known as a main shock, the main shock before the earthquake is pre-earthquake, occurred after the main shock is earthquake aftershock .

当某地发生一个较大的地震时，在一段时间内，往往会发生一系列的地震，其中最大的一个地震叫做主震，主震之前发生的地震叫前震，主震之后发生的地震叫余震。

Re-calculation of the Gulf region over the next 30 years the probability of earthquake risk; access to the prehistoric earthquake in the time and strength, strike-slip fault with the city's fault slip rate of new information; development of the Gulf region, the new three-dimensional structure of the crust and sedimentary rock velocity model ; Calculation in the Gulf region's history, location and intensity of the earthquake, regional seismicity rate changes over time, little is known about the fault is, unknown thrust fault and the fault rate of seismic activity; development of the Quaternary sedimentary rocks in the area of new digital map .

重新计算海湾地区未来30年地震危险概率；获取史前大地震的时间和强度、城市内走滑断层的断层滑动速率的新的信息；发展海湾地区新的地壳三维结构和岩石沉积岩速度模型；计算海湾地区历史地震的位置和强度、区域地震活动性速率随时间的变化、了解甚少的正断层、逆断层及未知断层的地震活动速率；发展该地区第四纪沉积岩的新的数字地图。

In this study, we have analyzed all kinds of lithologic geophysical signatures in the area where the beach bar sandstones developed in Es4 in Boxing Sag, and analyzed the seismic reflection features of different lithologies and their combinations using an inversion model combined with actual well results.

文中在分析博兴洼陷沙四段滩坝砂岩发育区各种岩性地球物理特征的基础上，从正演模型入手，结合实际验证，分析了不同岩性及其组合的地震反射特征，找出了研究区砂体组合反射在地震波形结构、极大值两侧面积比等地震属性上的表现形式，总结了薄互层及其组合模式与地震反射各属性的对应关系，以此进行地震属性预测，取得良好效果，在东营凹陷西部沙四段滩坝砂岩储层的勘探中较准确地预测出储层的发育带。

We have reported results for the Friuli earthquake4 (1976), the Umbria earthquake5 (1979), the Irpinia earthquake6 (1980), the Spitak earthquake7 ,8 (1988) and the largest earthquakes that occurred in southern Kamchatka9 ,10 during the past decade.

我们曾对Friuli地震65〔1976〕、Umbria地震66〔1979〕、Irpinia地震67〔1980〕、Spitak地震68 69〔1988〕，以及过去十年期间发生在Kamchatka南部的最大地震70 71报告过调查研究的结果。

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。