另一种理论认为其它动物在震前能感觉到人类察觉不到的弱震。
Another theory holds that other animals can sense weak shocks before an earthquake that are imperceptible to humans.
3到5级被称为弱震或微震；5到7级称为中强震；7到8级被称为大地震；8级及以上被称为特大、超强地震。
A quake measuring 3 to 5 is considered minor or light; 5 to 7 is moderate to strong; 7 to 8 is major; and 8 or more is great.
震相识别已经有很多方法，但对于弱震相识别的难题尚未根本解决。
There are a lot of methods to identify seismic phases, but the identification of weak phases is not solved ultimately.
本文从弱震活动的能量关系上给出发生续发性地震的可能判据。
In this paper, a possible criterion is derived on the basis of energy relation of the sequence of weak earthquakes for estimating the occurrence of the ensuing strong earthquake.
本文从弱震活动的能量关系上给出发生续发性地震的可能判据。
In this paper, a possible criterion is derived on the basis of energy relation of the sequence of weak earthquakes for estimating the occurrence of the ensuing strong earthquake.
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