美国加利福尼亚州圣安德列斯断层左侧,自1989年以来,接二连三地发生了三次七级以上的强震(1989年10月18日旧金山Ms7.3、1992年6月28日洛杉矾 Ms 7.9、1992年4月26日美国加州北部西海岸Ms7.3),地点之集中,强度之大,频度之高,是全球所罕见的。早在1978年7月10日美国《新闻周刊》报道说,圣安德列斯断层正在加快移动,沿断层地下的活动比早先猜想的多得多,这情况还暗示着,能量正在急剧地积聚,下次地震的爆发可能比预期的提前发生,而由于比预计还要多的能量封闭在岩石裂缝中,这些能量的释放势必导致相当大的地震。这就是说,美国加州西部的三次强震是地震地质学家早有所预测的。美国的许多地质学家预报:到2025年,沿着圣安德列斯断层将发生一次灾难性地震已是无疑的了。但这样的警告几乎没有震动那些可能的牺牲者,现在,一种运用轨道卫星和激光束测量断层地面无法抗拒的 On the left side of the San Andres Fault in California, USA, three earthquakes of magnitude seven or more occurred three consecutive years since 1989 (Ms7.3, San Francisco, October 18, 1989, Los Angeles, June 28, 1992 7.9, April 26, 1992, West Coast, Northern California, USA Ms7.3) The concentration, intensity and frequency of locations are rare in the world. As early as July 10, 1978, the United States, “Newsweek” reported that the San Andreas Fault is accelerating the movement along the fault underground much earlier than previously suspected, this situation also suggests that the energy is rapidly accumulating , The next earthquake may have occurred earlier than expected and the release of these energies will inevitably result in considerable earthquakes because more than expected energy is trapped in the rock cracks. This means that three strong earthquakes in western California have been predicted by seismologists. Many US geologists predict that by 2025 there will be no doubt that a catastrophic earthquake will occur along the San Andres Fault. But such warnings hardly vibrate those who may be sacrificed. Now, a method that uses orbiting satellites and laser beams to measure the surface of the fault is irresistible