用震源位置的标准计算机码重新定位地震事件。
The events were relocated using standard computer codes for hypocentral locations.
震源位置分布表明，北京西北地区存在两条主要的地震活动断裂带。
The distribution of hypocenters shows that there are two major seismic active belts in the northwestern Beijing.
通过对这些记录进行同样的计算，研究人员能够准确计算出这些小地震的震源位置。
By performing the same calculations on those records, the researchers could work out exactly where the shocks originated.
本文在获得三维速度图象的同时，还重新确定了该区的129个地震的震源位置。
While reconstructing the 3-d velocity structure, we have carefully relocated hypo-centers of 129 earthquakes in the region.
工程地震学中所指的“面源”属于这样一类潜在震源区——区内发震断层的位置和走向都是不确定的。
Area source in engineering seismology is such a type of potential earthquake source which the positions and strikes of genetic faults are uncertain.
震中地震的位置，直接以上的震源在地球表面。
The epicenter of an earthquake is the location directly above the hypocenter on the surface of the earth.
此方法的主要特点是：1。震中位置与震源深度、发震时刻分离求解；
The major features of this method are: (1) it separates estimations of focal depth and origin time from estimations of epicenter location corrections;
讨论了全局选择震源初始位置下的矩阵反演求取全局解的问题。
A new technique of matrix inversion with initial global sampling was developed to seek a global solution.
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.
震级是一种测量震源的方法，并且和个人的地理位置，震感无关。里克特震级测量是能观测到的最大震幅。
It is a measure of the size of the earthquake source and is the same number no matter where you are or what the shaking feels like.
计算每个可能震中位置的目标函数，取目标函数最小值为震中，并以此可分层计算得到震源深度及发震时刻。
In this method first the objective function of each possible epicenter is calculated then the exact epicenter can be defined under such a condition that the objective function is minimum.
计算每个可能震中位置的目标函数，取目标函数最小值为震中，并以此可分层计算得到震源深度及发震时刻。
In this method first the objective function of each possible epicenter is calculated then the exact epicenter can be defined under such a condition that the objective function is minimum.
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