有两种考虑地震持续时间的方法。
There are two ways to think about the duration of an earthquake.
因此断层断裂的区域越大，地震持续时间越长。
So the larger the area of the fault that ruptures, the longer the duration of the earthquake.
一开始我还好，我经历过很多次地震但这一次的地震持续时间很长而且有愈演愈烈之势。
First I was OK, I have been though a lot of earthquakes but the earthquake kept going and seemed to gain momentum.
科学家根据地震波的强度和持续时间把地震强度分为了不同的等级。
Scientists assign a magnitude rating to earthquakes based on the strength and duration of their seismic waves.
如果级数超过6.5级且震中位于水下，系统则要求相关监测站报送地震全程持续时间。
If the quake's magnitude is greater than 6.5 and the epicentre is underwater, it then requests information from the relevant stations on how long the earthquake took from beginning to end.
我们的确会使用震动持续时间来估计一些小型地震的震级。
We actually do use the duration of shaking to estimate the magnitude for some small earthquakes.
地震的持续时间是指什么？为什么不报道每次地震的持续时间？持续时间如何影响震级？
What was the duration of the earthquake? Why don't you report the duration of each earthquake? How does the duration affect the magnitude?
城市园林的抗震减灾功能持续时间长，从地震灾害发生一直延续到恢复重建。
The earthquake resistance and disaster mitigation functions of the city parks keep on working for long time, from the earthquake disaster starting till the recovery and reconstruction.
对地震荷载、持续时间、试验方向以及OBE和SSE 试验要求等问题作了较详细的说明；
The earthquake load, duration, test direction and the requirement during the OBEs or an SSE test have been explained in detail.
挤压型逆冲断层地震在主震之后，应力传播和释放过程比较缓慢，可能导致余震强度较大，持续时间较长。
Compressive faults occurred after principal earthquake with slow variation in propagation and release of stress wave, this might lead to higher after shock intensity and longer duration.
发现在每个地震活动期里地震平静幕的持续时间以非线性方式衰减。
It is discovered that the duration time of quiescence episodes in each active period reduces in a non-linear manner.
通过大量人工波及天然地震记录输入结构的分析，我们得到了地震动持续时间与结构弹塑性耗能之间的关系。
By introducing a number of natural and artificial ground motion records into structural analysis, the relationship between earthquake duration and energy absorbed by structures was obtained.
如果你在最新地震网页上看到“Md”或“持续时间震级”，那么我们使用的就是这种方法。
If you see a "Md" or "duration magnitude" on the Latest Earthquake webpages, this is what has been done.
从以上结果出发，本文提出了一个考虑地震中不同持续时间影响的抗震设计方法。
Then, a seismic design method considering the effect of strong ground motion duration is presented.
由于微地震事件的频率高，持续时间短，能量小，随机噪声甚至可以淹没有用的微地震信号。
Microseismic events are characterized by high frequency, short duration, and weak energy. They may even be smeared by random noises.
利用FLAC3D初步分析了地震荷载作用下地震波振幅、频率及持续时间对地下岩体洞室位移特征的影响。
The influences of earthquake amplitudes, frequency and duration time on the different rock cavern displacements are primarily studied by using FLAC3D.
对于一个典型的地震记录，如果地震平稳段持续时间较短，采用非平稳随机过程描述其地震动特性较为合理。
For a typical earthquake record, if the duration of its stationary portion is rather short, such a record should be described in terms of a non-stationary random process.
从以上结果出发，本文提出了一个考虑地震中不同持续时间影响的抗震设计方法。
Then, a seismic design method considering the effect of strong ground motion duration is pr…
数字记录的初至波早于模拟记录，且持续时间较长，大部分的数字地震震级比模拟记录、标准震级小。
The first array wave in digital record is earlier than that in analog record, and with longer duration. It also found that the most of the ear...
数字记录的初至波早于模拟记录，且持续时间较长，大部分的数字地震震级比模拟记录、标准震级小。
The first array wave in digital record is earlier than that in analog record, and with longer duration. It also found that the most of the ear...
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