论文部分内容阅读
1992年6月28日,美国加州首府洛杉矶市以东300公里处的莫哈韦沙漠地震,震级为7.3级,强烈的震波能量足以摧毁加州南部各地的电力设施。像许多其他邻居们一样,洛杉矶市一位叫肯·奈尔斯的居民惊醒后所做的第一件事情是迅速打开电视机收看新闻节目的震情报道。电视播出的报警信息仅持续数秒钟的时间,地震波就携载着破坏性威力以每秒3.7公里的速度沿地壳传播过来。所幸的是在地震波到达前,人们因电视的报警而采取了正确恰当的避震措施。加州南部的地震学家们预先设置
On June 28, 1992, the Mojave Earthquake 300 kilometers east of Los Angeles, the capital of the US state of California, has a magnitude of 7.3 and a strong seismic energy that is sufficient to destroy power facilities throughout Southern California. Like many other neighbors, the first thing a resident of Los Angeles, after awakening by Ken Niles, was to quickly open the televised news story. The alarm message broadcast on television only lasts for a few seconds, and seismic waves carry the destructive power spreading along the crust at a rate of 3.7 kilometers per second. Fortunately, before the arrival of the seismic wave, people took the correct and appropriate shock-proof measures due to the television alarm. Seismologists in southern California pre-set