地震发生原理及地震半径原理

Principle of Earthquake Occurrence and Seismic Radius

摘要: 本文通过应力集中与应力释放分析，提出了地壳中单位时间内温度变化量达到一定程度时产生地震的原理。并分析了发生地震的条件、地震性质，通过引入地震半径的概念阐述了地震发生的区域性及地震发生对称性与共面性原理的误差邻域的依据，使得地球向球体逐步回归变得可能。

Abstract: Through analysis of stress concentration and stress relief, this paper provides the principle that earthquake will occur when variation of the earth’s crust temperature per unit time reaches a certain degree.Besides, the condition and nature of earthquake occurrence have been also analyzed. At last, we describe the basis of regionality and the error range of co-planarity and symmetry principle of earthquake occurrence by introduction of the concept of seismic radius, which makes it possible that the earth becomes sphere step by step.