地震记录的

The accelerograms of some large earthquakes recorded by digital accelerograph s are used for analyzing the features of long period component of strong ground motion.

本文利用近20年国内外大地震时获得的数字强震仪记录分析强震动的长周期分量特性，给出了不同场地上的平均加速度反应谱及其拟合曲线。

Therefore, it is feasible to survey surface structure by using the Rayleigh ground roll waves with moderate detectability.

因此，利用石油地震勘探记录中的瑞雷面波来调查表层结构是可行的，它具有中等尺度的探测能力。

After a multi-scalar analysis of Bouguer gravity, related physical property inversion and geological structural inversion along representative profiles, 3-D velocity tomography of seismic data from stationary network of seismography stations and NEIC reports, the study of epicentral distribution and geological data were carried out in order to perform this integrated research.

对研究区布格重力数据进行多尺度分析和典型剖面的物性与结构反演，并利用中国固定地震台网、NEIC等记录到时与波形资料对研究区进行三维波速成像，结合震中分布及地质学方面的数据资料开展综合研究。

The coseismic signals of aftershocks exist in all components of th

地震发生时的电磁辐射信号似乎在记录数据中有所显示，但是与地震波到达观测点时的电磁信号相比幅度要小得多

That is,the EM observation system set up in geomagnetic field moved with the ground motion so that the EM coseismic signals were produced.

地震破裂发生时的电磁辐射信号在记录数据中相比地震波达到观测点的电磁信号幅度要小得多，无法从观测数据识别出来。

Seismographs are instruments used to record the motion of the ground during an EQ--installed in the ground throughout the world and operate as seismographic network.

地震仪是一种在地震时用来记录地壳运动的工具，它们安装在地下，遍及全球，以测震网络的形式运作。

The ideal to be aimed at was to devise an instrument that could record with a pen on paper, the movements of the ground or of the table as the quake passed by.

四册42 理想的目标是设计出这样一种仪器：当地震发生时，它能用笔在纸上记录下大地和桌子的运动情况。

With the recent appearance of broadband OBS, the background noise in the extended frequency range is even more significant.

现在广泛使用的宽频带洋底地震计在扩展频段内记录到的背景噪声更强。

A strong earthquake near the instrument will usually displace the reading off scale or may even damage the instrument.

如果在这类仪器的附近发生一次强烈的地震，一般就会使记录出格，甚至可能损坏仪器。

The quake was the most powerful to hit Haiti since at least 1770, according to USGS records, Mr. Bellini added.

贝里尼还说，美国地质调查局的记录显示，这至少是1770年以来海地最强烈的一次地震。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失