五千年(敝帚自珍)

主题:茗谈(100):第二长城 -- 本嘉明

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家园 几十甚至几百颗核弹(看当量)的海下引爆都不会引发海啸

你照片上看到只是冲击波激起的海浪,很快就会耗散掉。在这里外链出处有定性的计算。定性的计算虽然误差很大,但是在一个数量级内是靠谱的(这也是定性计算的好处,呵呵)。如果想看详细各种情形下的水下爆炸,可以看这里(有几百页)外链出处。我大致引用一些关键的话吧

The report outlines how when a nuclear weapon goes off underwater, it produces a cavity of hot gasses, which then collapses. If the explosion happens near the surface, it can create some pretty big waves—under some circumstances, they can be hundreds of feet high near ground zero.Fortunately for the coast, these waves are fundamentally different from tsunamis. It turns out that if the waves are very large, they break early, and expend most of their energy creating a narrow surf zone on the continental shelf. This is potentially hazardous to some ships, but much less catastrophic than a direct nuclear attack. When they reached the coast, the waves would be no worse than those from a bad storm.

所以要产生嘉明河友所说的十几米高的海啸的效果,估计得同时引爆几千颗百万TNT当量的核弹,与其这样做,还不如直接乱扔到敌对国的国土上更有效。。。。。

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