These phenomena could be caused by the effect of long - period wave generated from a large earthquake on far - field 这些可能是大震的长周期波在远场的效应所致。
2.
These anomalies might be due to the temperature variation of subsurface fluid that caused by transmission of long cycle waves through upper mantle or asthenosphere before the earthquake 水温异常出现的原因可能是由于地震前的长周期波通过上地幔或软流层传播，间接地导致了地下流体温度发生了微小的变化。
