摘要
目的是计算汾渭地震带强震的震源参数。所用的方法是根据断裂力学的有关公式分析断裂扩展过程中应力和位移的变化 ,计算结果表明地震多数是在低初始应力作用下发生的 (大约 10 0× 10 5 Pa) ,而且该方法在原理上是可行的。
The authors have calculated source parameters of strong earthquakes in Fenwei seismic zone.Based on formalae of fracture mechanics,they have analysed the changes of stress and displacement in process of fracture development of Daglale model in elasticplastic mechanics.The results show that earthquakes occurred under low stress about 100×10 5Pa,and the method is practical in principle.
出处
《高原地震》
2000年第1期9-15,共7页
Plateau Earthquake Research
关键词
断裂力学
剪切应力
弹塑性力学
震源参数
Fracture mehanics
Sheer stress
Elastic plastic mehanics
Stress drop
Source parameter
