大震后有60%的强余震与主震发震时刻的倾斜固体潮背景相同。
The background of tilt earth tide of 60% strong aftershocks after large earthquakes is similar to that of main shocks at the original times.
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.
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;
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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