论文部分内容阅读
加卸载响应比是一种刻画震源区介质损伤程度的物理学参数,它通过随时间的变化来反映地震孕育的过程来进行地震预测。通过对1990—1999年新疆地区部分中强地震前加卸载响应比时空演化特征进行分析,并基于该理论得到孕震积分的概念应用于震例中。结果表明:中强震震前在震中附近可能存在多个高加卸载响应比值区,它们大致围成椭圆状或环状,地震通常发生在异常高值波动或减弱的过程中;异常峰值至发震时间比理论时间要短,这可能表明新疆地区构造活动剧烈,孕震周期较短。
The loading / unloading response ratio is a physical parameter that characterizes the extent of media damage in the source zone. It predicts the earthquake by reflecting the process of the earthquake gestation over time. By analyzing the spatial and temporal evolution characteristics of loading / unloading response ratio of some strong earthquakes in Xinjiang region from 1990 to 1999, the concept of the pregnant earth integral is obtained based on this theory. The results show that there may be multiple high loading-unloading response ratios near the epicenter before moderate-strong earthquakes, which are generally elliptical or ring-shaped. The earthquakes usually occur during the process of fluctuating or weakening of anomalous high values. The earthquake time is shorter than the theoretical one, which may indicate that the tectonic activity in Xinjiang is intense and the period of seismogenic shock is short.