“双力源”地震前兆观点的进一步探讨

FURTHER DISCUSSION ON VIEW OF SEISMIC PRECURSOR FROM DOUBLE FORCE SOURCE

分析了地震前兆产生的环境、地下流体作用及流体力与地震前兆的关系,论述了浅层前兆和深层前兆产生的过程并予例证,并进一步探讨和完善了"双力源"地震前兆观点,即:地震前兆产生是构造应力与地下流体力共同作用的结果,彼消此长产生不同的动态图形及前兆异常;在地震孕育与前兆产生过程中,构造应力的作用是第一位的,流体力则是调制性的;只有那些能与地震孕育构造应力增强过程产生力学耦合的流体力,才能调制与诱发出地震前兆并促使地震发生。

At first, the environment of seismic precursor occurrence, the relations betwen subsurface fluid action or subsurface fluid force and seismic precursor are analysed. Besides the occurrence process of seismic precursor anormalies in shallow crust and deep crust is expanded and exampled. Lastly, a view of seismic precursor from ＇ double force source＇ is further discussed, the main points are as follows ： seismic precursor is the result from the action of ＇ double force source＇ , namely tectonic stress and the subsurface fluid force which each other growth and decline produce different dynamic figure and seismic precursor anomalies;the tectonic stress is primary and the subsurface fluid force is modulating on the process of earthquake development and seismic precursor occurrence that may be occured only when the subsurface fluid force mechanicaly couplling with the tectonic stress of earthquake preparation on its enhancement process may modulate and induce earthquake precursor and promote earthquake occurrence.