在确定震源的位置、发震时刻和震源强度之前必须进行滤波处理。
It is necessary to carry out filtering before we determine the position of seismic source, and the exciting time, and strength of seismic signal.
测点上某一震相的振幅和周期决定于震源强度以及震源到测点的整个传播过程中介质对震波的影响。
The amplitude and period of a phase at a receiving point depend on source strength and the effect of medium on seismic wave in the propagating from source to the receiving point.
它同时还可以消除数据采集时由于震源的误差(如震源强度误差、震源取向误差等)所带来的影响。
It also favours eliminating the negative influence caused by source errors such as source strength error, source orientation error and so on in seismic data acquisition.
震源有20英里深、强度7.0级。
The earthquake was more than 20 miles deep and had a magnitude of 7.0, the USGS said.
在具有同样介质强度条件下，推得不同断层面宽度情况下震源体线性尺度与震级的关系式。
In the condition of the same medium strength, the relative expression between source linear dimension and magnitude is derived in the case of different fault plane width.
腾冲火山区的微震活动分布、地震强度、及震源深度特征所表现的现象可能与地下岩浆体活动相关，显示了与火山热物质孕震机理有关的明显特征。
Therefore, the features of distribution of microseisms, magnitude and depth are probably related to the activity of magma body, which show mechanism of hot volcanic matter.
已有的研究表明，炸药震源在井下激发、可控震源在地面垂向振动，均会产生较强的纯纵波和一定强度的纯横波；泊松比差别较大的分界面有利于形成较强的透射转换横波。
Previous studies show that both dynamite borehole shots and vertical vibrations from controllable seismic sources at the surface will produce relatively strong pure P-waves and weaker pure S-waves.
白头山火山地震分为四种类型，其地震特点是频度高、强度低震源集中。
The seismic activities of the volcanic earthquake in Baitou Mountain area can be divided into four types.
白头山火山地震分为四种类型，其地震特点是频度高、强度低震源集中。
The seismic activities of the volcanic earthquake in Baitou Mountain area can be divided into four types.
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