地震活动的演化——一次大地震过程的地震活动有序性变化

SEISMICITY EVOLUTION AND ORDERITY CHANGE IN WHOIE PROCESS OF MAJOR EARTHQUAKE

我们利用地震频度作为序参量,并应用绝热消去法建立了代表地震活动演化规律的序参量所满足的主方程。通过主方程的解,很好地解释了一次大地震过程中可能出现的各种地震活动现象和有序性变化。特别有意义的是,包括大地震震源在内的地震断裂系统象许多物理系统一样,在临界点处涨落会自行扩大并对系统状态的突变起着举足轻重的作用。在此基础上,对于我们在地震预报的实践中常常面临的复杂多变的地震活动带来的困惑,似乎开始有了克服的希望。

Making use of seismic frequency as order parameter, We establish the master equation of order arameter, which repesents reqular evolution of seismicity, by means of adiabatic elimination principle. With resulting solutions of the master epuation, they canexplain various seismicity phenomena and orderity change in whole proceas of major earthquake. It is specially significant for the system's fluctuation to be able to expand by oneself and to become a decisive factor of propeling phase trasition or sudden change at trasition point.