The trace analysis for the anomaly showed that the catastrophic jumps may show the strengthening process of the stress field in North China, except that it related to the M 6 4 earthquake at Baotou.
异常追踪分析表明，此次突跳变化除与包头西6．4级地震有关外，可能还反应了华北地区应力场的增强过程。
3
In general, a higher pre existing microcrack density or a lower loading stress rate results in a longer nucleation stage, and therefore, increases the predictability of catastrophic failure event.