对地震发动核攻击

• 作 者: 鹏飞
• 出 处: 第二课堂
• 发表日期: 2002年09期
• 关键词: 观测记录 形状改变 层应力 小震 张力波 系列指标 地下核试验 壳层 别赫捷列夫 爆炸当量

地震是一种自然现象,就如同刮风下雨一样。据科学家们观测记录,地球上每年发生地震大约500万次,平均每天要发生近14000次。不过,这些地震绝大多数是震级很小的,以至于人们根本无法感觉到。这样的小震占每年地震总数的99％。人们能感觉到的不过1％,其中能造成破坏的约有1000次。 绝大多数地震,是由于地壳运动引起的。在运动中坚硬的岩石受到力的作用,形状改变、破裂,这时就会发生地震。震级大的地震会给人类带来巨大的灾难。

Earthquakes are a natural phenomenon, just like wind and rain. According to observations made by scientists, there are about 5 million earthquakes on Earth each year, with an average of nearly 14,000 occurrences per day. However, the vast majority of these earthquakes are so small that people simply cannot feel it. Such small earthquakes account for 99% of the total annual earthquake. What people can feel is only 1%, of which about 1,000 can cause damage. Most earthquakes are caused by the movement of the earth’s crust. In the movement of hard rocks affected by the force, the shape changes, rupture, then an earthquake will occur. Large-scale earthquakes will cause huge disasters to humans.